Agro-ecological Zones Research Articles

Evaluating the Response of Watermelon (Citrullus lanatus (L.) to Organic and Inorganic Fertilization in Makurdi, Southern Guinea Savannah, Nigeria

Watermelon consumption in Nigeria is on the increase due to increasing awareness of its nutritional value while its production is on the decrease due to inefficiency of resource management (inputs like fertilizers). This study aims to optimize watermelon (Citrullus lanatus L.) production through the use of organic and inorganic fertilizers. The field experiment was conducted at the Teaching and Research Farm of Joseph Sarwuan Tarka University, Makurdi in the 2019 cropping season under rain-fed conditions. The site falls within the Latitude 7°4'1N and Longitude 8°3'7E at an elevation of about 97m above sea level in the Southern Guinea Savanna Agro-ecological Zone of Nigeria. The experiment treatments, namely and they were T1 (Control 0kg/ha), T2 (150 kg/ha Compost), T3 (200 kg/ha Compost), T4 (250 kg/ha Compost) and T5 (300 kg/ha NPK 20:10:10) laid out in Randomized Complete Block Design with three replications. The study revealed that in comparison with control treatments, 300 kg/ha NPK 20:10:10 produced (31.04t/ha) fruit yield, the application of 250 kg/ha compost enhanced growth and yield parameters of watermelon with fruit yield of (17.65t/ha). The research findings suggest that using compost manure at the rate of 250 kg/ha for watermelon production is viable since it is economical and environmentally friendly alternative to NPK fertilizer due to it cheap and easy to prepare methods, its beneficial effects on soil, groundwater and the environment. It is further recommended that, in Makurdi, smallholder farmers, should adopt the application of compost at the rate of 250 kg/ha for optimum yield

Edaphic influences on soil organic carbon in the forest systems of southern Western Ghats, India.

Spatial distribution and edaphic influences on soil organic carbon (SOC) are key determinants of carbon sequestration potential, and analysis of aggregate-protected SOC gives an in-depth understanding of the stability of carbon stored in soils. The present study evaluated the edaphic effects on the SOC in four different forest types-tropical evergreen forest, tropical moist deciduous forest, tropical dry deciduous forest and shola forest-in the southern high hills agro-ecological zone of Western Ghats, India. SOC stocks at depths of up to 1m varied significantly across forest types, with the highest levels observed in the shola forest type (441.08Mg C/ha) and the lowest in the dry deciduous forest (138.17Mg C/ha). Around 70% of SOC was found in upper layers (0-30cm) in all the studied forest types. Evaluation by a fixed-effect model showed that forest type, soil depth and aggregate size significantly affected SOC storage in these systems. An assessment of the relative importance and effect of 14 edaphic factors on SOC content in different forest types using the random forest model showed that the algorithm could explain 93.68%, 41.72%, 45.53% and 75.2% variability of SOC concentration across shola, dry deciduous, moist deciduous and evergreen systems, respectively. Across all forest types, except for dry deciduous forests, soil texture was found to be the primary factor influencing SOC, surpassing all other edaphic parameters. Ionic interactions by way of metal oxides like Ca2+, Al3+, Fe3+, Mg and H+ influenced the SOC in tropical forest systems. The insights into SOC dynamics and the edaphic factors regulating them offer valuable guidance for forest management in tropical regions, particularly regarding climate change mitigation.

Sustainable utilization of cultivated land resources based on "element coupling-function synergy" analytical framework: A case study of Guangdong, China

Solely focusing on the agricultural production function of cultivated land resources is not conducive to the various demands for meeting the UN's Sustainable Development Goals. Recognizing the multifunctionality of cultivated land and understanding the interrelationships between individual functions are crucial for the rational planning and utilization of resources. This paper introduces an "element coupling-function synergy" analytical framework for the sustainable utilization of cultivated land resources. The proposed framework is based on the causal relationships between elements and functions within the cultivated land system. Subsequently, a causal Bayesian belief network was constructed to identify trade-offs and synergies among multiple functions of cultivated land resources in Guangdong, China. The findings reveal trade-offs between food cleanliness and food production/social security, and synergistic relationships among food production, social security, and ecological regulation, as well as among ecological regulation, habitat maintenance and landscape culture. The study area was divided into eight functional zones: Green Agricultural Zone, Agro-inputs Control Zone, Urban Agricultural Zone, Major Grain-producing Zone, Modern Agricultural Zone, Agro-ecological Preservation Zone, Agro-ecological Tourism Zone, Quality Improvement Zone. Multi-objective management plans were formulated for optimizing multifunctional relationships within each zone. The analysis result reveals the importance of nutrient conditions and ecological environments for the sustainable management of cultivated land. Consequently, specific policy recommendations are proposed accordingly. This paper may not only advance understanding of the multifunctionality of cultivated land but can also provide valuable insights for land-use planning to ensure the judicious and sustainable management of cultivated land resources.

An Evaluation of the Land Available for Sustainable Sugarcane Cultivation and Potential for Producing Ethanol and Bioelectricity in Angola

With a predominantly humid tropical climate and a large area for expanding agricultural activities, Angola has in principle favorable conditions for bioenergy production. The focus of this study was to evaluate the availability of suitable land for producing sugarcane. This crop is highly efficient in converting solar energy into biomass for energy purposes in Angola. To this end, this paper outlines a method for data collection, processing, and analysis divided into three sections. The first section uses the GAEZ (Global Agroecological Zones) database and QGIS (Quantum GIS) software (version 3.22.5) to assess land availability for sugarcane cultivation in Angola, classifying the regions’ suitability into four levels. The second section supplements this with data from the FAOSTAT database, systematically excluding areas with restrictions, such as protected zones, land already used for other crops, and regions unsuitable for sugarcane. Finally, the third section employs an agricultural yield model to estimate the potential yield of sugarcane based on climatic parameters and the amount of bioenergy (ethanol and bioelectricity) able to be produced in the available land. Under these criteria, this study identified the existence of 6.3 Mha in lands of good agricultural suitability, with water resources, corresponding to 5% of the Angolan territory, distributed in seven provinces of the country, especially in the provinces of Cuando Cubango and Cunene, where 85% of the very suitable land under irrigation is located. Adopting a model of agricultural productivity, assuming irrigation and adequate agricultural practices, such area could produce approximately 956 million tons of sugarcane annually, which is significantly higher than the current production in this country. This amount of feedstock processed using current technology could potentially produce 81.3 GL of ethanol and 176.9 TWh of electricity with low GHG emissions per year, which is able to mitigate, as a whole, circa 60.3 MtCO2-eq/year by displacing gasoline in light vehicles and diesel and natural gas consumed in power generation.

Assessing the Early Establishment and Adaptability of Italian Ryegrass (Lolium multiflorum) in Irrigated and Rainfed Conditions of Punjab, Pakistan

In Punjab, Pakistan, more than 60% expenditure incurred on the feeding of livestock and offered low quality forage thus affecting the productivity of milk and meat. The less production of livestock oriented products often results malnutrition in the society. An effort was made to evaluate the Italian Ryegrass (Lolium multiflorum) early growth and its adaptation to rainfed and irrigated environments. The main objective of this study is to provide important new information for sustainable fodder production systems. The experiment used a Randomized Complete Block Design with seeds obtained from Korea and was carried out in the winter of 2023 in both rainfed Chakwal and irrigated Sargodha zone of Punjab. The plant's response to varying soil conditions and water availability was evaluated by measuring a range of growth parameters, such as plant height, population density, root and shoot biomass, root length, and the root-shoot ratio. The results show that there are significant differences between rainfed and irrigated locations as established by the statistical analysis. Italian Ryegrass in irrigated plots showed higher mean plant height (43.75 cm), higher plant population (317.50 plants/m²), higher shoot biomass (7.425 g/plant), greater length of roots (5.950 cm), and a lower root-shoot ratio (0.1135) than in rainfed areas. Additionally, the study provides data on soil profiles that show differences between the two locations in terms of pH, electrical conductivity, nitrogen, phosphorus, and potassium. The findings provide important information for enhancing Italian Ryegrass cultivation in Punjab's various agro-ecological zones, given the critical role fodder feed plays in supporting livestock and agriculture. The study provides the basis for well-informed farming practices by highlighting the importance of water management strategies to improve fodder production during scarcity period and, by consequently, animal nutrition in the area.

Assessing homogeneous and heterogeneous economic impacts of fall armyworm management practices on farm performance in Ghana

One of the emerging challenges impinging on sustainable food production in sub-Saharan Africa is the invasion of the fall armyworm (FAW) pest. Data collected from farm households in different agro-ecological zones in Ghana and a Multivalued Treatment Effect (MVTE) model were used to argue that FAW management practices are key to stemming the debilitating effects of FAW infestations on farm performance. Previous studies have analysed homogeneous treatment effects to explain FAW management practices. The present study employs heterogeneous treatment effects to account for the differential effects of FAW management practices such as early planting, application of prescribed pesticides, and a combination of both practices while accounting for socioeconomic characteristics. Findings from the study reveal that distance to extension services exerts negative effects on adoption of early planting only, and adoption of both FAW management practices. Moreover, past FAW infestations tend to exert a positive effect on adoption of pesticide application only and adoption of a combination of the FAW management practices. Adopting the FAW management practices examined in this study assisted the maize producers in raising their farm performance. Socioeconomic characteristics also tend to influence the homogeneous treatment effects of adoption of the FAW management practices on farm performance. This finding indicates that heterogeneity within farm households is crucial for policy regarding adoption of FAW management practices.

Determinants of household resilience to food insecurity: A case of rural northern Ethiopia by using the RIMA approach

An ongoing and global agenda is the food security policy debate in rural Ethiopia of households to enhance resilience at the individual and household level for tackling food insecurity. Therefore, this study investigated determinants of household resilience to food insecurity in rural dwellers of Mekiet District. A cross-sectional research design was conducted in two agro ecological zones of the Mekiet district, lowland, and midland, involving 228 respondents. The study employed a quantitative and qualitative approach, with multi-stage sampling techniques results employed to select sample households by using two-stage factor analysis. The result from factor analysis using the RIMA approach showed that the latent variables of adaptive capacity, asset, and social safety net have a positive value of (0.76), (0.51), and (0.77), respectively, and in the contrast, access to essential services has a negative load of (-0.61), and all variables were found to be statistically significant. All those loads were significant, with an absolute value of factor loadings greater than 0.364, which is recommended for a sample size of 200 and above. Those variables were also highly correlated with resilience capacity. The study recommended that resilience programs should be implemented at district, community, and household levels to enhance resilience to food insecurity.

A comparative study of population structure and genetic diversity of commercial and indigenous chickens from different agro-ecological zones in Ghana using SilicoDArT and SNP markers

Chicken production, both in the local and commercial sectors, contributes significantly to human livelihood and food security. Precise use of diverse genetic resources is primary in breeding programs. The study analyzed the genetic diversity and population structure of commercial chickens and indigenous chicken ecotypes from three different agro-ecological zones (Semi-Deciduous Rainforest Zone, Guinea Savannah, and Coastal Savannah) using SilicoDArT and SNP markers, utilizing whole-genome sequencing and phenotypic data. Phenotypic data were collected from 72 indigenous chicken ecotypes across the three AEZs, and 32 commercial birds kept at the Kwame Nkrumah University of Science and Technology (KNUST). DNA samples used for sequencing were obtained from 88 chickens (62 indigenous chicken ecotypes and 26 commercial chickens). A total of 54,995 SilicoDArT and 85,396 SNPs markers were generated from DArTseq genotyping. After filtering, 44,784 SilicoDArT and 58,353 SNP were used for genetic diversity and population structure analysis. Both markers showed high reproducibility and call rate. Polymorphic information content (PIC) values ranged from 0.00 to 0.50, while ≥ 50 % showed PIC values more than the median. Furthermore, we obtained FST values, Nei’s genetic distance, dendrogram analysis, and principal component analysis (PCA) of commercial and indigenous chickens. The FST and Nei’s genetic distance showed that there is high genetic diversity between the commercial chickens and the indigenous chicken ecotypes. However, there was low genetic diversity among the indigenous chicken ecotypes. The PCA analysis indicated a clear separation between the commercial and indigenous chicken ecotypes, while no clear separation was observed between the indigenous chicken ecotypes. The phenotypic data and the dendrogram indicated that naked and frizzle genes do not markedly alter the genetics of indigenous and commercial birds, and their influence on economic traits may be solely determined by the prevailing environmental conditions. The results indicate that there is high genetic differentiation between commercial and indigenous chickens based on SilicoDArT and SNP markers. The indigenous chickens from the agro-ecological zones have low genetic diversity and might have a common origin. Naked neck and frizzle genes do not markedly alter the genetic performance of birds in terms of economic traits. Therefore, the superiority of birds carrying these genes in economic traits may be solely due to environmental variation.

Mapping of on-field soil nutrient variabilities as a guiding force for smart farming: a case study from FarmerZone sentinel-1 from three potato agroecological zones of India.

Mapping of soil nutrient parameters using experimental measurements and geostatistical approaches to assist site-specific fertiliser advisories is anticipated to play a significant role in Smart Agriculture. FarmerZone is a cloud service envisioned by the Department of Biotechnology, Government of India, to provide advisories to assist smallholder farmers in India in enhancing their overall farm production. As a part of the project, we evaluated the soil spatial variability of three potato agroecological zones in India and provided soil health cards along with field-specific fertiliser recommendations for potato cultivation to farmers. Specifically, 705 surface samples were collected from three representative potato-growing districts of Indian states (Meerut, UP; Jalandhar, Punjab and Lahaul and Spiti, HP) and analysed for soil parameters such as organic carbon, macronutrients (NPK), micronutrients (Zn, Fe, Mn, and Cu), pH, and EC. The soil parameters were integrated into a geodatabase and subjected to kriging interpolation to create spatial soil maps of the targeted potato agroecological zones through best-fit experimental semivariograms. The spatial distribution showed a deficiency of soil organic carbon in two studied zones and available nitrogen among all studied zones. The available phosphorus and potassium varied among the agroecological zones. The micronutrient levels were largely sufficient in all the zones except at a few specific sites where nutrient advisories are recommended to replenish. The general management strategies were recommended based on the nutrient status in the studied area. This study clearly supports the significance of site-specific soil analytics and interpolated spatial soil mapping over any targeted agroecological zones as a promising strategy to deliver reliable advisories of fertiliser recommendations for smart farming.

Brazilian Biofuel Policy: Challenges to Incorporating Socio-Environmental Criteria

Objective: Biofuels have been receiving increasing attention around the world as a result of growing concerns about the security of oil supplies and global climate change. Considering this context, the article aims to analyze the Brazilian biofuels policy (RenovaBio program) in order to propose a summary table of gaps in the consideration of socio-environmental criteria. Method: Qualitative, descriptive research was carried out, supported by secondary data obtained through bibliographical research. Results and Discussion: We found that gaps in the incorporation of socio-environmental criteria in RenovaBio are related to the following topics: traceability of inputs and raw materials; sugarcane agroecological zoning (ZAE Cana), measurement of water footprint consumption associated with traceability of raw materials, measurement of emissions resulting from I-MUT and criteria encouraging E2G. Research Implications: We found that RenovaBio could include the adoption of instruments and practices aimed at agricultural production that are more appropriate to the Brazilian scenario, considering the characteristics of each biome, aiming to include socio-environmental criteria. Originality/Value: The analysis of socio-environmental criteria that are absent or insufficiently included in public policy contributes to clarify the challenges to be overcome in the biofuels production process marked by the agricultural, industrial and distribution phases.

Effects of Methods of Planting and Time of Herbicide Application on the Economic of Lowland Rice in Badeggi, Nigeria

The experiment was conducted in 2021 and 2022 wet season at National Cereals Research Institute headquarters, Badeggi, Niger state (latitude 9o041 02.05’’N, longitude 0.6o011 3.31’’E) in the Southern Guinea Savannah Agro-Ecological Zone of Nigeria. To evaluate the cost-effectiveness of different planting methods and herbicide application timings on lowland rice production for farmers in the region. The experiment was laid out in a factorial experiment. The treatment consists of five sowing methods (broadcasting dry, broadcasting wet, dibbling wet, dibbling dry and transplanting) with two different timing of herbicide application. The 10 treatment combinations were laid out in a factorial experiment with a split-plot design with timing of herbicide application allocated to the main plot while sowing methods were designated to the sub-plot. Data were collected on Plant height, number of tillers, day to 50% flowering, day to maturity, number of seeds per panicle, seed yield per panicle, 1000-grain weight and grain yield per hectare. The result indicated that overall, the transplanting method of planting resulted in the significantly highest for all parameters, followed by the dibbling wet and dibbling dry methods. The broadcast method resulted in the poorest outcomes. Applying herbicide at 2 WAS resulted in better outcomes compared to 3 WAS. The transplanting method with herbicide application at 2 WAS resulted in the significantly highest grain yield, gross returns, and gross margin, making it the most profitable option.

Blooming markets: The economic dynamics of the Nepal rose trade

Thanks to its excellent climate and varied agroecological zones, Nepal has been a significant player in the global rose market. The geographical variety of the nation makes it possible to grow roses all year long, making it a desirable location for rose export and cultivation. The production and export of roses have significantly increased in recent years. The rose trade has increased in Nepal for several reasons. Investment in the industry has been stimulated by government measures to support floriculture and offer incentives to rose farmers. Additionally, the effective distribution of roses to domestic and foreign markets has been made possible by better transportation infrastructure. The growth of the global market has greatly aided the development of Nepal's rose industry. The growth of rose cultivation in Nepal has significantly impacted the economy and employment. It is a good source of revenue through internal sales, export, and other activities that provide value addition. The sector creates direct farm jobs while local communities benefit from indirect employment in supporting industries. In addition, there is increased job opportunities due to seasonal spikes in demand. Rose exports have expanded due to a rise in demand for Nepali roses, particularly in European markets and nearby nations like India. The favorable trade agreements Nepal has with several nations have helped to increase its exports even more. But issues still exist in the rose trade sector. Since maintaining consistent quality is necessary to compete in the international market, quality control and standardization continue to be areas of concern. The rose business in Nepal is also vulnerable to changes in global demand and competition from other nations that grow roses. Further expansion of the industry will help it overcome problems like limited technology and training hence leading to its fast development; this calls for government support as well as market expansion. In conclusion, the rose trade environment in Nepal is a fluid and changing one. Due to favorable circumstances, government assistance, and global demand, the sector has seen significant expansion. Continuous efforts in quality control, market diversification, and innovation are necessary to maintain and grow this sector. The rose trade in Nepal has the potential to significantly boost the nation's agricultural exports while promoting economic growth in rural areas.

Comparison of the chemical composition of major feed resources between the midland and lowland agro-ecological zones in the Majang zone of southwest Ethiopia

Evaluation of feed chemical composition is essential for predicting nutrient deficiencies and improving feed for optimal livestock productivity. However, variation in agro-ecological zones (AEZs) might affect the chemical composition of feeds. The main objective of this study was to evaluate and compare the chemical composition of major feed resources in the midland and lowland AEZs of the Majang zone in southwest Ethiopia. A total of eight representative samples of feed resources were collected from lowland (Godere district) AEZ (500–1500 m above sea level) and midland (Mangashi district) AEZ (1501–2300 m above sea level). The samples were analysed for dry matter (DM), ash, crude protein (CP), ether extract (EE), neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL). The result revealed significant differences (p < 0.05) in the chemical composition traits between the two AEZs in the study area. For example, the DM, ash and NDF contents of C. dactylon were higher (P < 0.05) in the lowland AEZ, while the ADF and ADL contents were higher in the midland; D. abyssinica had higher (P < 0.05) ADF content in the lowland, while Z. mays stover had higher (P < 0.05) DM, ash and ADF contents in the lowland. S. bicolor stover showed higher (P < 0.05) DM, ash, ADF and ADL contents in the lowland, while C. gayana had higher (P < 0.05) ash and CP contents in the lowland and higher (P < 0.05) ADF and ADL contents in the midland AEZ; Atella (a traditional alcohol byproduct) had greater (P < 0.05) ash and ADF contents in the lowland. Regardless of the AEZs, the DM, ash, NDF, ADF, EE, CP and ADL contents of the feed samples varied from 89.97 ± 0.33 % in P. purpureum to 92.50 ± 0.01 in Sorghum bicolor stover, 4.27 ± 0.19 in Atella to 12.37 ± 0.42 in elephant grass, 51.66 ± 0.38 in Atella to 66.10 ± 0.25 in D. abyssinica, 32.21 ± 0.29 in D. abyssinica to 42.58 ± 0.44 in D. abyssinica, 0.63 ± 0.15 in Atella to 2.55 ± 0.03 in C. dactylon, 4.77 ± 0.01 in Zea mays stover to 11.83 ± 0.02 in V. unguiculata and 10.31 ± 0.07 in Z. mays stover to 19.41 ± 0.07 % DM in C. dactylon, respectively. From this study it was concluded that variation in AEZ has a significant effect on chemical composition traits of the feeds in the study area. The results of the study revealed that V. unguiculata stands out as a valuable protein source, while crop residues may require additional protein supplementation to meet livestock requirements in the study area.

Агробиологические особенности новых гибридных форм винограда, полученных в результате скрещивания формы Филлоксероустойчивый Джемете с сортом Красностоп анапский

Abstraсt. The results of research aimed at creating new generation varieties are highlighted. The aim of the research was to study the agrobiological features of new hybrid forms of grapes obtained as a result of crossing the Fillokseroustoychivyi Dzhemete form with the variety Krasnostop Anapskiy, the prospects of their application for industrial use in plantations in the Krasnodar region. The research was carried out in the conditions of the Black Sea agroecological zone of viticulture of Krasnodar region in the period from 2021 to 2023 by classical methods, the chemical composition of berry juice was determined according to GOST 27198-87, GOST 32114-2013. The control variety was Krasnostop Anapskiy. Ampelographic description of three hybrid forms of technical grapes (K-73-1, K-74-17, 62-23) was performed and their evaluation was carried out. It was found out that by the duration of the vegetation period the form K-74-17 is referred to the middle ripening period, and K-73-1 and 62-23 to the middle late ripening period. Agrobiological indicators of the studied hybrid forms testify to good preservation of buds in the winter period. The fruitfulness coefficient k2 was the best in hybrid K-73-1 and was 1.6, which is at the level of the control variety. The actual yield per bush in the hybrids K-73-1 and 62-23 exceeded the control variety. According to the indicator of mass concentration of sugars, hybrid 62-23 was singled out with a result of 24.1 g/100 cm3 , with titratable acidity of 5.8 g/dm3 . Hybrid forms K-73-1 and K-74-17 were characterized by resistance to Plasmopara viticola Berl. et de Toni. The conducted studies allowed us to recommend forms K-73-1, K-74-17, 62-23 for further study, and DNA-marker study of genetic potential of forms K-73- 1 and K-74-17 should be carried out. Keywords: grapes, hybrid form, fruitfulness coefficient k1, fruitfulness coefficient k2 Financing source: The research was carried out within the State Task of Ministry of Science and Higher Education of the Russian Federation for the FSBSI NCFSCHVW.

New okra genotypes for the management of aphids (Hemiptera: Aphididae) in the diverse ecological landscapes of Central Africa.

Various aphid species, including Aphis gossypii Glover (Hemiptera: Aphididae), are considered important pests of okra and other vegetables. Previous studies under 1 environment in Cameroon, Central Africa, had found multiple okra genotypes with resistance to A. gossypii. However, the stability and yield performance of the "resistant" genotypes across different environments were unknown. Ten previously identified aphid-resistant okra genotypes along with 1 commercial variety and a local landrace (specific to a given location) were compared during 2 seasons in replicated trials in 4 agro-ecological zones of Cameroon that also represent large areas of Central Africa. Aphid populations and okra yield parameters were evaluated. Breeding values were predicted using a linear mixed model for all data, and genotypes by location interactions were identified. The area under the infestation pressure curve (AUIPC) was calculated using aphid count data and subjected to resistance analysis. The Local-the most susceptible with the highest breeding value (+2.33)-and VI060794-one of the moderately resistant-genotypes had the highest yield per hectare. The only resistant genotype VI036213 had the lowest breeding value (-2.20). Genotype × location interactions were significant for yield, pod width, and plant height, while location variance was significant for all parameters evaluated. When considering that higher aphid densities could lead to greater pesticide use and, therefore higher production and environmental costs, the high-yielding VI060794-with moderate aphid resistance across multiple environments-presents an alternative or substitute for local landraces across multiple agro-ecologies of Cameroon and (by extension) Central Africa.

Genotype x Environment Interaction and Stability of Heading Time and Grain Yield of 12 Open Pollinated Sorghum Varieties across Different Agro-ecological Zones in Burkina Faso

Sorghum is the most important crop grown in Burkina Faso and is a staple food for millions of people in rural areas. However, sorghum grain production is mainly from local varieties which are low yielding. Introduced exotic varieties were high yielding but low adopted due to bad grain quality for local dishes. Therefore, it is important to popularize new varieties that meet farmer’s needs. We assessed the agronomic performance and stability of 12 sorghum varieties in different agro-ecological zones in Burkina Faso. Studies were conducted in one location (Kamboinse research station) during 2022 and in six locations (Farako-Bâ, Kamboinse, Fada, Sabou, Zoula and Andemtenga) during rainy season 2023. Twelve sorghum varieties including checks (Kapelga, ICSV 1049) were evaluated in a randomized complete block design with genotypes as studied factors. Agromorphological parameters along with midge damage and number of Striga plants were collected in all the sites. Genotypes, environments and genotype × environment interactions were significant for heading time and grain yield. The varieties had different heading times and different grain yields within environments and across the six environments. The GGE biplot discriminated the study areas into a unique mega-environment for heading time and three mega-environments for yield potential. The majority of varieties yielded more than the average sorghum yield in sub-Sahara Africa, however low yielding varieties were found in environments affected by biotic and abiotic constraints. Some high yielding varieties (Sariaso 43 = 3960.94 kg/ha, 014-SB-EPDU-1004 = 3681.64kg/ha, Sariaso 42 = 3478,52 kg/ha and Sariaso 39 = 3427.73 Kg/ha) were clearly identified in constraintless mega-environments of Kamboinse and Farako-Ba. In conclusion, the GGE biplot analysis revealed that Sariaso 43 was the best genotype that combined suitable heading time and high grain yield across environments. The best performing genotypes for heading time were Sariaso 39 and PR3009B for grain yield. Identified high yielding varieties will be submitted for released and cultivation in suitable agro climatic areas.

Arahan Sistem Pertanian Ideal Berbasis Potensi Sumberdaya Lahan: Komponen Dasar Cukilan Smart Village

In recent years, the concept of smart villages has gained increasing prominence as a means of encouraging sustainable development in rural areas. This is particularly relevant in the agricultural sector, where the potential of land resources is crucial. Cukilan Village, located in Suruh District, Semarang Regency, Central Java, is primarily an agricultural area, with over 80% of its land designated for agricultural purposes. The village government has expressed a desire to develop Cukilan as a smart village through an FGD process. Based on this background, a community service program was implemented with the aim of designing Cukilan Village as a smart village in stages, to enhance economic growth and prosperity by leveraging the potential of agricultural resources and human resources, as well as accelerating the village development process. The method for implementing this PKM (Community Service) program utilized the Assets-Based Community Development (ABCD) approach, which involved outreach, discussion, mapping of agroecological zones, as well as land suitability and evaluation. As a result of this initiative, the Cukilan Village government received guidance for an ideal agricultural system based on land resource potential, which serves as a basic component towards the realization of Cukilan Smart Village.

Determination of Essential Minerals in the Indigenous Vegetables Solanum nigrum (Stout Shade) and Gynandropsis gynandra (Spider Plant) from Two Agroecological Zones in Kisii County, Kenya.

Vegetables are good sources of essential mineral elements that promote good health and immunity. Information on the nutritional contents of indigenous vegetables is scarce. Therefore, this study sought to ascertain the concentrations of magnesium, manganese, chrome, zinc, copper, and iron in Solanum nigrum and Gynandropsis gynandra indigenous vegetables from two agroecological zones (upper midland and lower highland) of Kisii County, Kenya, using inductively coupled plasma optical emission spectroscopy (ICP‒OES). For Gnandropsis gynandra, the most abundant erythrocytic synthesis element was Fe (1856.67 ± 15.28mg/kg DW) for plants harvested from Nyanchwa (UM), and the least was Cu (8.90 ± 0.44mg/kg DW) in plants harvested from Kari (LH). In addition, Mg was the hypoglycemic element with the highest concentration (5975.00 ± 10.00mg/kg DW), and Cr lowest (3.16 ± 0.45mg/kg DW) in samples harvested from Matongo (UM). For Solanum nigrum, the most erythrocytic synthesis element was Fe (1280.00 ± 10.00mg/kg DW for samples collected from Kiamabundu (UM), and the least was Cu (9.08 ± 0.15mg/kg DW) in the samples from Nyanchwa (UM), whereas Mg in samples from Nyabioto (UM) was the hypoglycemic element with the highest concentration (4920.00 ± 10.00mg/kg DW) and Cr in samples from Mariba (LH had the lowest concentration) (3.95 ± 1.63mg/kg DW). The concentrations of elements in the two indigenous vegetables from the UM agroecological zone were slightly greater than those in the LH agroecological zone. Nonetheless, the variations observed were not statistically significant (P < 0.05). Enzymatically bio accessed concentrations of iron, zinc, chromium, magnesium, manganese, and copper were higher than those obtained aquatically. The indigenous vegetable bio avails substantial amounts of iron and copper to enable them be used in the management pernicious anaemia; on the other hand, the substantial bio availed levels of zinc, manganese, magnesium, and chromium enables the vegetable to be used in the management of diabetes.

Impacts of poultry manure and biochar amendments on the nutrients in sweet potato leaves and the minerals in the storage roots

Poultry manure (PM) has demonstrated its potential to enhance crop nutritional quality. Nevertheless, there remains a dearth of knowledge regarding its synergistic effects when combined with wood biochar (B) on the nutrient concentrations in sweet potato leaves (Ipomoea batatas L.) and the mineral content stored in sweet potato storage roots. Hence, a two-year field trial was undertaken during the 2019 and 2020 cropping seasons in southwestern Nigeria, spanning two locations (Owo—site A and Obasooto—site B), to jointly apply poultry manure and wood biochar as soil amendments aimed at enhancing the nutritional quality of sweet potato crop. Each year, the experiment involved different combinations of poultry manure at rates of 0, 5.0, and 10.0 t ha−1 and biochar at rates of 0, 10.0, 20.0, and 30.0 t ha−1, organized in a 3 × 4 factorial layout. The results of the present study demonstrated that the individual application of poultry manure (PM), biochar (B), or their combination had a significant positive impact on the nutrient composition of sweet potato leaves and minerals stored in the sweet potato storage roots, with notable synergistic effects between poultry manure and biochar (PM × B) in enhancing these parameters. This highlights the potential of biochar to enhance the efficiency of poultry manure utilization and improve nutrient utilization from poultry manure. The highest application rate of poultry manure at 10.0 t ha−1 and biochar at 30.0 t ha−1 (PM10 + B30), resulted in the highest leaf nutrient concentrations and mineral composition compared to other treatments at both sites. Averaged over two years, the highest application rate of poultry manure at 10.0 t ha−1 and biochar at 30.0 t ha−1 (PM10 + B30) significantly increased sweet potato leaf nutrient concentrations: nitrogen by 88.2%, phosphorus by 416.7%, potassium by 123.8%, calcium by 927.3%, and magnesium by 333.3%, compared to those in the control (PM0 + B0). The same treatment increased the concentration of sweet potato root storage minerals: phosphorus by 152.5%, potassium by 77.4%, calcium by 205.5%, magnesium by 294.6%, iron by 268.4%, zinc by 228.6%, and sodium by 433.3%, compared to the control. The highest application rate of poultry manure at 10.0 t ha−1 and biochar at 30.0 t ha−1 yielded the highest economic profitability in terms of gross margin (44,034 US$ ha−1), net return (30,038 US$ ha−1) and return rate or value-to-cost ratio (VCR) (263). The results suggested that the application of poultry manure at 10 t ha−1 and biochar at 30 t ha−1 is economically profitable in the study areas and under similar agroecological zones and soil conditions.

Perceived effects of climate change on aquaculture production in Zambia: status, vulnerability factors, and adaptation strategies

Aquaculture plays a critical role in Zambia's food and nutrition security. However, aquaculture is highly vulnerable to the effects of a changing climate which can lead to economic losses, and food and nutrition insecurity. In this study, we investigated the perceived effects of climate change on aquaculture production in Zambia, vulnerability factors, and adaptation strategies. We used semi-structured and structured questionnaires to collect data from aquaculture producers in all provinces across the country. Results revealed high (over 80%) awareness of climate change, primarily attributed to literacy levels and access to media. Producers perceived occurrence of climate-related changes such as rising temperature, altered rainfall patterns, cyclones frequency, and disease outbreaks, impacting production costs. Generally, the results indicate a high to medium perception of rising temperature and increased frequency of flooding and droughts across the country. Although rising temperature did not appear to affect aquaculture production cost, the frequency of droughts, floods, cyclones, and disease outbreaks showed a significant association with production costs. Identified vulnerability factors include reliance on a limited range of fish species, absence of insurance coverage, and low adoption of adaptation practices. Vulnerability levels vary across regions, with provinces in agroecological zone I (Eastern, Lusaka, Southern, and Western) showing higher vulnerability. Despite this, many producers aren't implementing adaptation measures due to financial limitations, species diversity constraints, and insufficient knowledge of alternative economic pursuits. Main adaptation strategies involve livelihood diversification and adjustments in fish cultivation periods and infrastructure. To foster aquaculture sustainability amid climate change, critical interventions such as farm insurance, research diversification in aquaculture species, and enhancing producer resilience are necessary.