Fertilizer Costs Research Articles

Evaluation of the Use of Organic and Mineral Fertilisers on Amaranth Productivity in the Locality of Kombé, Republic of Congo

The use and high cost of chemical fertilisers, as well as the dangers associated with their misuse, are leading growers to look for an alternative, sustainable form of fertilisation. A survey was carried out in the Kombé area of Brazzaville to assess the effectiveness and use of organic and mineral fertilisers on amaranth growth and yield. During the survey, 50 market gardeners growing amaranth were randomly selected and interviewed using a semi-structured questionnaire. The results obtained from our survey were analysed statistically, revealing significant differences between the different types of fertiliser used at Agricongo de Kombé (p˂0.05). The variance analysis revealed five (5) heterogeneous groups (a, b, c, d, cd), the most significant being poultry manure (group d) and NPK (group cd). The results of the survey revealed that amaranth (32.31%) was the dominant previous crop, poultry manure (34%) was the main and least expensive fertiliser, so it is capable of improving the growth and yield of amaranth, compared with other manures. Poultry droppings could be recommended for amaranth production.

Enhancing Agricultural Practices: Exploring the Benefits of Paddy Straw Management Technologies Adopted by Potato Growers in Jalandhar District, Punjab, India

This study was conducted in the Jalandhar district of Punjab in 2020-21, chosen purposefully due to its status as the region with the highest potato cultivation area. The list of potato growers was obtained from the District Horticulture Department in Jalandhar. Five blocks—Nakodar, Adampur, Bhogpur, Jalandhar East, and Jalandhar West—with the maximum potato cultivation area were selected from this list. A sample of 200 potato growers was then chosen using a proportionate cum random sampling method. Following the adoption of paddy straw management technologies, 52.5 % of potato growers reported a decrease in fertilization costs whereas 85 % of potato growers observed that increased in the cost of preparation of land during used of paddy straw management technologies by Rs.3035 because of high rate of diesel consumption. Additionally, 37 % observed an improvement in soil health, while 40.5% noted an increase in potato yield. The majority of potato growers incorporated paddy straw into their potato fields. However, an equal percentage of growers (17%) either used paddy straw to make bales or burned it. Notably, the adoption of paddy straw chopper, mulcher, and Mould board plough by potato growers led to a significant increase in potato yield. The results also indicated that for yield, the t - values for two tailed significance level of the difference between sample means for the response was 0.000 cost of production due to adoption of all the technologies by the potato growers. Therefore, statistically significant differences at level of 0.05 were observed in all five technologies used for paddy straw management in potato cultivation.

ANALISA KEUANGAN DAN FAKTOR-FAKTOR YANG MEMENGARUHI PRODUKSI BUAH BAWANG MERAH DI KECAMATAN SAPE, KABUPATEN BIMA, NTB

In 2023, Sape Regency will produce 20,081 tons of shallots, up from 19,986 tons in 2020. However, the financing of agricultural businesses is affected by a number of problems at the farmer level. The objectives of this research are as follows: (1) evaluate the financial value and income of shallot farming enterprises in Sape District, Bima Regency, NTB; (2) examine the variables influencing the production of shallot crop in Sape District, Bima Regency. Surveys were used to collect data and analyze it using descriptive analysis. According to research results, during the planting season, the cultivation of shallots in Sape Regency produces a profit of IDR 12,954,665 per cultivated land area or IDR 32,386,662 per hectare. Shallot cultivation has a B/C value of 0.13, more than 0. Therefore, it is useful to develop shallot cultivation in Sape Regency; (2) land area, seed costs, SP36 fertilizer costs, organic fertilizer costs, NPK fertilizer costs, urea fertilizer costs and ZA fertilizer costs are factors influencing shallot agricultural production in Sape District, Bima Regency. In reality, shallot production is (very) influenced by the cost of seeds and insecticides. However, shallot production is not influenced by land area, labor costs, SP36 fertilizer, organic fertilizer, NPK fertilizer, urea fertilizer, ZA fertilizer or other fertilizer costs.

Economic Viability of Organic Fertilization in Forage Oats (Avena sativa L.) in the Mexicali Valley

O Objective: To economically evaluate the use of chemical, organic and organic-mineral fertilizers in of forage oat production in the Mexicali Valley; and to determine the profitability of each fertilization type. Design/methodology/approach: Three treatments were established, one chemically fertilized (T1), one with organic fertilization (T2), and one with organic-mineral fertilization (T3) with two replications under a completely randomized design. Cash flow, financial costs and economic costs were calculated. Results: Fertilization costs accounted for between 37% and 52% of the cost structure. Treatments T2 and T3 did not cover production costs. Only treatment T1 treatment demonstrated the ability to cover both production and financial costs. None of the treatments covered economic costs. Limitations on study/implications: It is suggested to replicate the economic viability analyses in consecutive productive cycles, as other studies have shown positive impacts on soil fertility. Findings/conclusions: The organic and organic-mineral fertilization systems (T2 and T3) were not profitable in the short term. The chemical fertilization system (T1) demonstrated the ability to cover, in addition to production costs, the depreciation costs of fixed assets. However, none of the treatments showed the ability to compensate the risk of investing in the activity.

Exploration of Agronomic Efficacy and Drought Amelioration Ability of Municipal Solid-Waste-Derived Co-Compost on Lettuce and Maize

Organic soil amendments, such as composts, mitigate the negative impacts on the environment that are caused by poor waste management practices. However, in the sub-Saharan African region, and Malawi in particular, studies investigating the agronomical efficacy and their ability to ameliorate drought stress when used as a soil amendment are minimal. This study aimed to evaluate the efficacy of sewage sludge and municipal solid waste (MSW) co-compost to ameliorate drought stress and improve crop productivity. Three experiments were conducted (i) to determine optimal application rate for co-compost, (ii) to evaluate yield response of maize and lettuce to co-compost application under contrasting soils, and (iii) to assess the effect of co-compost under water-limited conditions. Our results indicate that an application rate of 350 g co-compost per station was the most effective. This rate is 50% and 37% lower than the currently recommended rate for applying conventional compost to green vegetables and maize, respectively. In addition, under drought conditions, the co-compost application enhanced growth in lettuce, with less wilting, increased biomass and yield, approximately 130% greater leaf yield, and a 138% improvement in root growth. Furthermore, the relative root mass ratio (RRMR) was enhanced with the co-compost application by 103% under drought stress. This suggests that the co-compost amendment resulted in a greater allocation of biomass to the roots, which is a crucial morphological attribute for adapting to drought conditions. The concentration of K in the leaves and roots of plants treated with co-compost was significantly increased by 44% and 61%, respectively, under drought conditions, which may have contributed to osmotic adjustment, resulting in a significant increase in leaf relative water content (RWC) by a magnitude of 11 times. Therefore, in light of the rising inorganic fertilizer costs and the limited availability of water resources, these results demonstrate the potential of MSW and sludge co-composting in ameliorating the drastic effects of water- and nutrient-deficient conditions and optimizing growth and yield under these constraining environments.

Assessing microplastics contamination and characteristics in organic soil amendments in the Greater Accra Metropolitan Area of Ghana

The study examines the increasing use of organic soil amendments (OSA) due to declining soil fertility and the high cost of synthetic fertilizers, alongside growing concerns about microplastics (MPs) accumulating in soil, which negatively impact soil, crop, and food quality. This research assessed the presence and characteristics of microplastics in Municipal Solid Waste Composts (MSWC) and dry sewage sludge (DSS) within the Greater Accra Metropolitan Area (GAMA) of Ghana. The study analyzed two sources of MSWC (MSWC 1 and MSWC 2) and two sources of DSS (Sludge 1 and Sludge 2), with five samples each, for microplastic concentrations. A reference soil sample, collected from a depth of 0-25 cm, was also tested. The microplastics were extracted using acid digestion (30 % H2O2 at 70 °C), density separation with a ZnCl2 solution, and vacuum filtration. Results revealed that Sludge 1 had the highest concentration of microplastics (4316 ± 968 MPs kg-1), followed by MSWC 1 (3572 ± 1196 MPs kg-1), MSWC 2 (3104 ± 418 MPs kg-1), and Sludge 2 (2024 ± 562 MPs kg-1). The soil sample had the lowest concentration of 232 ± 62 MPs kg-1. Statistical analyses (Kruskal Wallis and Dunn’s multiple comparisons) showed significant differences (p < 0.05) in microplastic concentrations among the samples. The composition of microplastic polymers varied among the samples. The soil sample predominantly contained cellophane (91.67 %) and polyvinyl propionate (8.33 %). MSWC 1 contained urethane alkyd (31.11 %), polyethylene (26.67 %), and polyester (20 %), while MSWC 2 had polyethylene (24.10 %), polyester (20.48 %), cellophane (18.07 %), and polypropylene (15.66 %). Sludge 1 was dominated by polyethylene (35.29 %), polypropylene (30.25 %), cellophane (15.13 %), and urethane alkyd (11.76 %), whereas Sludge 2 mainly contained polyester (42.86 %), cellophane (23.21 %), urethane alkyd (21.43 %), and polyethylene (12.50 %). Microplastics were prevalent in the MSWC and sewage sludge which were obtained from the GAMA, with significantly higher concentrations than those in the soil samples. Further research is needed to develop strategies to mitigate microplastic pollution in OSAs to improve soil health.

Development of High-Quality Organic Fertilizer from Biomass Waste and the Application of Biochar in Local Areas of Sakon Nakhon Province, Northeastern Thailand

This study investigates the production of high-quality organic fertilizers from biomass waste in the Ban Wa Yai community of Sakon Nakhon Province, Northeastern Thailand, aimed at promoting sustainable agricultural practices amidst challenges such as soil degradation and reliance on chemical fertilizers. The primary objective was to develop organic fertilizers that enhance soil health and support plant growth while utilizing locally sourced biomass materials, including cow and buffalo manure, finely ground fermented leaf scraps, and weed debris. A fermentation process lasting 15 to 30 days was used, integrating biochar to improve nutrient profiles and microbial activity. Results showed optimal pH levels of 8.04 after 15 days and 7.94 after 30 days of fermentation, beneficial for addressing the region’s acidic soil conditions (pH 4.67 - 5.38). The germination index (GI) was notably high at 129 ± 1.86 after 30 days, indicating effective growth promotion potential. Analytical assessments confirmed nitrogen (N), phosphorus (P), and potassium (K) concentrations in the organic fertilizers met or exceeded organic standards, supporting plant nutrition and fostering healthy microbial ecosystems. The organic matter (OM) and organic carbon (OC) content were approximately 40 - 60 % higher than commercial alternatives, enhancing soil structure, aeration, and water retention. Additionally, calcium (Ca) and magnesium (Mg) levels improved the nutrient profile, with Ca slightly exceeding standard limits, which helps ameliorate soil acidity. Economic analysis indicated a 40 % reduction in fertilizer costs for local farmers, promoting a shift towards organic practices. Overall, this study emphasizes the significance of self-reliance and the sufficiency economy philosophy in fostering sustainable agriculture practices within the Ban Wa Yai community. By utilizing local resources and transitioning from chemical fertilizers to high-quality organic fertilizers, the community enhances agricultural productivity while promoting economic independence and resilience. Such initiatives exemplify the potential for integrating traditional practices with modern agricultural methods to ensure a sustainable future. HIGHLIGHTS The study developed high-quality organic fertilizers from local biomass waste, enhancing sustainable agricultural practices in the Ban Wa Yai community. Fermentation resulted in optimal pH and nutrient levels (N, P, K, Ca, and Mg), surpassing commercial fertilizer standards and improving soil health. Transitioning to organic fertilizers led to a 40 % cost reduction for farmers, promoting self-reliance and aligning with the sufficiency economy philosophy. GRAPHICAL ABSTRACT

Phosphorus in Balance: Evaluating the Costs and Benefits of a Circular Economy Approach

This paper presents a comprehensive cost-benefit analysis of producing alternative phosphorus (P) fertilizers from recycled water treatment residuals (Fe-WTR) and cowshed effluents. The cost-benefit values of Fe-WTR are compared to the net costs of recycling P using a synthetic adsorbent (commonly used practice-layered double hydroxide, P-LDH) and the costs of commercial fertilizers. Dairy wastewater is used as a source of P. The cost of 1 ton P using the Fe-WTR process is €329. In contrast, synthetic adsorbents (P-LDH) incur significantly higher costs, amounting to €3329 per ton, underscoring the economic advantage of utilizing waste-derived materials. Adopting Fe-WTR fertilizer not only offers substantial cost savings by avoiding landfill fees (€40 per ton) and wastewater discharge fines (€500 per ton) but also reduces environmental impacts when compared to the use of commercial P fertilizers (non-recycled P). The Fe-WTR method mitigates eutrophication and pollution, presenting the dual benefit of cost-effectiveness and environmental protection, which exceeds the common P recycling practice (LDH). Our conclusions are based on production processes in Israel and compared to previous cost estimations at the world level, assessing the potential gain from such circular production of P globally. Recycling P from waste streams can be economically viable and environmentally preferable at small and large economic scales, supporting global sustainability goals.

Evaluation of Alley-cropping Agroforestry System and Conventional System of Agriculture on the Productivity of Cabbage (&amp;lt;i&amp;gt;Brassica oleracea &amp;lt;/i&amp;gt;L.) in Dschang, West Region of Cameroon

Cabbage is one of the main vegetable crops grown in Cameroon. However, production is limited by rising prices and the scarcity of chemical fertilisers on the market. The rise in cost of fertilizers leaves some farmers reluctant to use fertilisers and as a result leads to lower yields, hence, low crop profitability. The aim of this study was to compare the two systems of agriculture; agroforestry system with the conventional system on the growth of cabbage (&amp;lt;i&amp;gt;Brassica oleracea&amp;lt;/i&amp;gt; L.). Research plots were established on the campus of the University of Dschang, in the West Region of Cameroon. The comparisons were made on the basis of productivity, pest abundance and economic profitability. Data on yield and pest susceptibility variables were collected during the field trials. It was realised that the slug (&amp;lt;i&amp;gt;Deroceras reticulatum&amp;lt;/i&amp;gt;) population was higher in the agroforestry system (4.62±2.41 slugs) than in the conventional system (1.03±0.55 slugs). The aphid population (&amp;lt;i&amp;gt;Brevicoryne brassicae&amp;lt;/i&amp;gt;) was higher in the conventional cropping system (25.31±38.94 aphids) compared with the alley-cropping agroforestry system (0.71±0.62 aphids). Productivity variables showed that cabbage yield did not vary between the two production methods. It was 66.08 t/ha and 66.76 t/ha respectively for the agroforestry system and the conventional system. The economic analysis showed that the agroforestry system was more profitable than the conventional system. Thus, growing cabbage in an agroforestry system is an ecological and profitable strategy for agriculture that is more resilient to climatic variations.

Phase-dependent photo-assisted electrocatalytic conversion of nitrate to ammonia using TiO2: Insights into amorphous and rutile activity

The rise in nitrogen-containing compounds in water sources due to modern agricultural practices has intensified the need to effectively convert nitrate to ammonia, a valuable fertiliser and fuel. We developed a photo-assisted electrocatalytic system using a NiO/Au plasmon/TiO2 composite to selectively reduce nitrate to ammonia under visible light, at neutral pH, and at room temperature. TiO2 was found to be the active catalyst, but the precise active structure responsible for each catalytic step remains unclear, as the reaction involves a complex, multistep process. By analyzing the catalytic activity of different TiO2 phases, we found that amorphous TiO2 significantly enhances the nitrate-to-nitrite reduction step, increasing nitrite concentration in solution by nearly 50 % and resulting in a 10 % increase in Faradaic efficiency for this product. Conversely, the rutile phase plays a crucial role in the subsequent conversion of nitrite to ammonia. When the rutile phase was present, the ammonia yield more than doubled, leading to a 30 % increase in Faradaic efficiency. This phase-dependent behaviour provides critical insights into improving nitrate reduction efficiency, enabling sustainable agricultural practices that recycle nutrients, reduce fertiliser costs, and promote economic sustainability.

Impact of Organic Farming in Economic Development in Agriculture

Organic farming is valued for its self-sustaining, environmentally friendly methods that protect surrounding ecosystems of plants and animals. It reduces weed growth through techniques like crop rotation and integrates traditional knowledge alongside natural processes. This approach optimizes inputs, strengthens regenerative abilities, and ensures effective conservation of resources and nutrients. The cost-benefit ratio in sustainable agriculture is notably better, as it requires fewer primary inputs compared to conventional methods, which often incur high costs for fertilizers and pesticides, lowering profit margins. Additionally, conventional farming's heavy reliance on chemicals can lead to significant health risks, both mental and physical. Organic farming, by following natural principles and using non-synthetic, traditional practices, creates a balanced environment that allows crops to thrive. This approach helps counteract the negative impacts of chemical-dependent agriculture, increasing production sustainably and supporting population growth without harming the ecosystem. Core principles of organic farming include health, ecology, fairness, and care. The benefits range from natural pest and disease resistance, specialization potential, healthier soil, support for pollinators, no GMO concerns, safer work conditions for farmers, and on-farm input production. Farmers and companies must meet stringent, government-approved standards, undergo regular certification, and comply with inspections to ensure the high quality of organic products produced with renewable resources. This paper aims to delve into the origins of organic farming, its environmental, social, economic, and agricultural advantages, and underscore its importance for the future. Similarly, on a larger scale, it can provide rural populations with greater earnings, better resource management and more chances to generate revenue Keywords: Organic Farming, Sustainability, Farmers, Health, Ecology.

Implementation of fertilizer subsidy policy to fertilizer cost saving based on Indonesian minister of agriculture regulations

Abstract The research aims to describe savings in variable fertilizer costs based on the Ministry of Agriculture. The research area was determined purposively, namely Tanjung Morawa and Hamparan Perak District, Deli Serdang Regency, North Sumatra Province. The population for the study is farmer groups based on the largest number of farmer groups in the research village, while the research sample is farmer groups. The number of respondents in Paluh Kurau and Wonososari Villages were 68 and 48 farmers respectively. Analysis method by calculating variable costs for subsidized fertilizer and non-subsidized fertilizer. The findings indicate that the highest price ratio in Minister of Agriculture Regulation Number 49 of 2020, for NPK in Paluh Kurau Village, while the lowest is for SP-36 fertilizer in Minister of Agriculture Regulation Number 41 of 2021 in Wonosari Village. The highest cost savings are Minister of Agriculture Regulation Number 49 of 2020 for NPK fertilizer in Paluh Kurau Village, while the lowest cost savings are Minister of Agriculture Regulation Number 41 of 2021 for ZA fertilizer. The largest average cost savings for five types of subsidized fertilizer in Minister of Agriculture Regulation No, 49 of 2020. Without the fertilizer policy, variable costs increase, and rice production declines.

Assessing Nitrogen Fertilization in Processing Pepper: Critical Nitrogen Curve, Yield Response, and Crop Development

Groundwater pollution in intensive horticultural areas is becoming an increasingly important problem. Over-fertilization of these crops, combined with poor irrigation management, leads to groundwater contamination through leaching. Previous research on the effect of N on sweet peppers grown in greenhouses is abundant, but data on outdoor cultivation, especially considering variety and site influences, are lacking. Therefore, this study evaluates nitrogen (N) fertilization in open-field processing-pepper crop in Extremadura, Spain to mitigate this environmental impact. Field trials were conducted in 2020, 2021, and 2022 to determine the optimum N fertilizer rate for processing peppers, with the aim of reducing environmental impacts such as nitrate leaching while maintaining crop yields. The trial consisted of applying different N doses, 0, 60, 120, and 180 kg N/ha in 2020 and 2021 and 0, 100, and 300 kg N/ha in 2022. There were four replications of each treatment, arranged in randomized blocks. Measurements included crop yield, biomass, intercepted photosynthetically active radiation (PAR), and canopy cover. The study also developed a critical nitrogen curve (CNC) to determine the minimum N concentration required for optimal growth. The commercial yield results showed that there were no significant differences between the two treatments with higher N inputs in the three years; therefore, the application of more than 120 kg N/ha did not significantly increase yield. Nitrogen-free treatments resulted in earlier fruit maturity, concentrating the harvest and reducing waste. In addition, excessive N application led to environmental problems such as groundwater contamination due to nitrate leaching. The study concludes that outdoor pepper crops in this region can achieve optimal yields with lower N rates (around 120 kg N/ha) compared to current practices, taking into account that initial soil N values were higher than 100 kg N/ha, thereby reducing environmental risks and fertilizer costs. It also established relationships between biomass, canopy cover, and N uptake to improve fertilization strategies. These data support future crop modeling and sustainable fertilization practices.

Genetic Diversity of Maize (Zea mays L.) Genotypes under Low Level of Nitrogen

Maize (Zea mays L.) is India's second most significant crop, behind rice. As a cross-pollinated crop, hybrid vigour is commonly used to achieve the best production potential. The selection of various genotypes is a primary goal in the maize hybrid breeding programme. Maize is a voracious feeder and requires a lot of fertiliser. The biggest limits on maize production in India are low soil nitrogen and high fertiliser costs. Jharkhand consumes only 82.5 kg of total fertiliser nutrients per acre. In order to discover genetically varied maize genotypes for nitrogen usage efficiency, the current study evaluated 121 maize genotypes in a randomised block design with two replications at low nitrogen levels. Plant height, days to 50% pollen shed, days to 50% silk, anthesis-silking interval (ASI), days to75% maturity, number of leaves per plant, root length, stover yield per plant, grain yield per plant, and harvest index were all recorded. Statistical analysis was performed using the morphological trait data. Analysis of variance revealed substantial (p≤0.05) variations in morphological features between maize genotypes. For statistical analysis, a clustering method was used to locate various genotypes with greater genetic distance in order to develop good heterotic combinations. One hundred twenty one genotypes were divided into six clusters using the dendogram-by-ward minimum variance approach. Cluster III and V had the greatest inter-cluster distance (79.26), followed by cluster III and VI (74.77) and cluster II and III (73.80). The many heterotic combinations developed from these clusters can be employed in subsequent breeding programmes to produce low nitrogen-requiring hybrids with a low yield penalty.

Determinants of profit among maize farmers in Osogbo ADP zone of Osun State, Nigeria

Maize output in Nigeria is declining and worsening economic situations continue to afflict rural households increasing the level of food insecurity. This study examined the determinants of profit among maize farmers in Osogbo ADP zone of Osun State, Nigeria. Primary data were sourced using a well-structured questionnaire from a total of 120 maize farmers. A two-stage sampling procedure was employed to select the farmers. The analytical tools used were descriptive statistics, farm budgetary techniques and regression analysis. The results showed that maize cultivation was dominated by male farmers with an average age of 50 ± 9.4 years. Additionally, less than 30.8% of the maize farmers had formal education above secondary school. The farming experience of the maize farmers was 14.7 ± 5.3 years and the average farm size was estimated at 7.85 ± 2.15 acres. The average farm income was N207 314.40 ± 23 290.95 with the Benefit-Cost Ratio (BCR) of 2.24. The major constraints of maize production, ranked based on their higher values of WMS, were the high labour costs, expenditures for pest and disease control, and the high costs of fertilizers The determinants of farm income that had positive relationship and were significant at 1% level of significance include years of formal education, expenditure on fertilizer while age of the framers negatively influenced the farm income. Also, the farm size and years of farming experience were positive and statistically significant to farm income at 5%. The study suggests a policy focus of training farmers in modern farming system and implement sustainable farm inputs subsidy programs. Keywords: determinants, profit, maize, farmers, Nigeria

Yield and Nitrogen Uptake of Wheat as Influenced by Nitrogen, Vermicompost and Biofertilizer Application at Rampur, Chitwan, Nepal

High cost, unavailability, and imbalance use of chemical fertilizers and environmental degradation are challenging sustainability of wheat production in Nepal. Integration of vermicompost, biofertilizer (Azotobacter chrococcom) and chemical fertilizer can improve the situation. A field experiment was conducted to assess the combined application of vermicompost, chemical fertilizer and biofertilizer on the growth, yield, and nitrogen uptake of wheat at Rampur Chitwan from November 2021 to April 2022. The experiment was laid out in a strip-split plot design with five N levels as horizontal factors (0, 25, 50, 75, and 100% of recommended dose), two vermicompost levels (0 and 5 t ha-1) as the vertical factor, and two biofertilizer levels (with and without application) as the sub-plot factor with three replications. Data on growth, yield attributes and yield of wheat, nitrogen uptake were collected, analyzed and presented. The research result revealed a significant influence of biofertilizer and nitrogen levels on grain yield of wheat. Full dose of nitrogen resulted a significantly higher grain yield (4441.71 kg ha-1) than other nitrogen levels (0, 25, 50, 75 % of recommended dose with grain yield 2792.11, 2982.20, 3771.17. 4231.63 kg ha-1 respectively). Biofertilizer application had significantly higher grain yield (3726.76 kg ha-1) compared with no biofertilizer application (3560 kg ha-1). There was significant interactions between biofertilizer application and nitrogen levels on number of grains per spike and sterility percent of wheat. The number of grain per spike was highest with 100% recommended N with biofertilizer application (47.52 grains/spike) followed by 75 % recommended N with biofertilizer application (46.53 grains/spike). The sterility % was lowest (6.47 %) with 100 % N with biofertilizer application followed by 75 % N with biofertilizer application (6.72 %). Total nitrogen uptake was significantly higher (119.04 kg ha-1) for full dose of nitrogen as compared with lower nitrogen levels (0, 25. 50, 75 % recommended N levels). Biofertilizer application also resulted in significantly higher nitrogen uptake (89.89 kg ha-1) as compared with no Biofertilizer application (79.89 kg ha-1). Integration of biofertilizer, with chemical fertilizer 75 - 100 % recommended N level could increase the growth, yield, and nitrogen uptake of wheat in Chitwan.

Symbiotic N2 fixation in cowpea varieties is markedly enhanced by inoculation with elite Bradyrhizobium strains

Because of its excellent ability to fix atmospheric nitrogen, cowpea [Vigna unguiculata (L.) Walp] makes a significant contribution to soil sustainability and productivity in the resource limited tropical regions. However, due to in part to ineffectiveness and limited availability of bio-inoculant, its symbiotic N contribution and yield remained low in the field. Therefore, this study examined the effect of elite cowpea infecting Bradyrhizobium strains (CP-24 and CP-37) on shoot biomass and symbiotic nitrogen contributions of four cowpea varieties (Keti, TVU, Black eye bean, and White wonderer trailing). For this a two-year field experiment was carried out at three sites using a factorial randomized complete block design with four replications. The natural abundance of the 15N technique was used to compute the symbiotic N contribution. Bradyrhizobium inoculation led to significantly higher nodule formation, % Ndfa, amounts of N fixed, and shoot biomass, demonstrating the effectiveness and ability of the strains to enhance soil fertility. Inoculating cowpea with CP-24 strain increased shoot N content, % Ndfa and N fixed by 40%, 15%, and 41%, respectively, in comparison to the un-inoculated control. Furthermore, the inoculant by variety interaction had a significant effect on nodule number, nodule dry weight, and amount of N fixed, with TVU and White Wonderer trailing in combination with CP-24 exhibiting the most outstanding performance. There was also a strong positive correlation between biomass accumulation and N fixed, as well as N fixed and seed yield. Therefore, Bradyrhizobium inoculation on cowpea varieties TVU and White Wonderer trailing with CP-24 strain is recommended at all three tested sites and similar agro-ecologies for improved symbiotic N contribution and associated yield advantage of cowpea. This study highlights that, the use of elite and crop specific Bradyrhizobium strains can boost symbiotic nitrogen contribution, soil fertility, and the yield performance of legumes. Thus, it helps resource-poor farmers who are suffering from rising mineral fertilizer cost to achieve food security while reducing climate change risks.

ANALYSIS OF THE ESTABLISHMENT AND MAINTENANCE COSTS OF TABLE GRAPE PLANTATIONS ACCORDING TO THE PERGOLA SUPPORT SYSTEM

Evaluating the costs of establishment and maintenance of table grape plantations, grown through the Pergola management system, is a significant opportunity for winegrowers in the Republic of Moldova. This system, relatively new in the country, remains unadopted for many of the table grape producers. The present research highlights the methodological and technical aspects related to the costs associated with the cultivation of table grapes through the Pergola management system, which must be adapted to the specific climatic conditions of Moldova and to the current market requirements. The main objective of the research is to analyze the structure of costs that influence the yield of plantations in the long term, including the initial establishment expenses and the subsequent maintenance expenses. The author points out that although the maintenance costs of Pergola table grape plantations are high, the growing demand for quality grapes adds significant economic value to this vineyard management system. The research details the composition of the establishment and maintenance costs of table grape plantations, namely fertilization costs, irrigation costs, mechanized service costs. Concrete examples show what the structure of these costs is, thus demonstrating the importance of a correct assessment of costs in the process of establishing and maintaining table grape plantations.

Comparative study on productivity of Hybrid Napier CO3 and CO4 with the application of organic and inorganic fertilizers

The present study aimed to assess the growth parameters, herbage yield and chemical composition of CO3 and CO4 (Pennisetum perpureum X Pennisetum americarnum) at the Livestock farm Eastern University, Sri Lanka from July to September 2018. Four different treatments; inorganic fertilizer 100%, Organic fertilizer 100%, Control and Inorganic+Organic fertilizer 1:1 (weight basis). Plant height, leaf length, number of tillers per clump, leaf area, yield and total ash content were measured at two-week intervals from the 4th week up to the 8th week and data were subjected to Analysis of Variance (ANOVA). The means were separated using Duncan’s multiple range test at 0.05 significance level. Results indicated that the productivity of CO3 is superior to CO4 in terms of growth and yield under (T4) CO3 with 1:1 mixture of inorganic and organic fertilizer. The highest (p&lt;0.05) fresh matter yield of 18.07 t/ha, with a dry matter yield of 3.83 t/ha was recorded in the sole application of inorganic fertilizer. A similar yield was obtained in CO3 with the 1:1 inorganic and organic fertilizer mixture. CO3 showed the highest total ash content (18.44%) on dry matter basis. Hence, farmers can save half of the cost of inorganic fertilizer by using farmyard manure along with half of the recommended dose of inorganic fertilizer for fodder cultivation

Economic study of Binadhan-22 production in some selected areas of Bangladesh

This study was conducted in four districts of Bangladesh, namely Mymensingh, Bogura, Naogaon and Rangpur to estimate the profitability and factors affecting gross return of the variety. This study was based on primary data which were collected from 200 Binadhan-22 growing farmers. In the sampled areas data were collected through pre-designed interview schedule from January-February, 2023. Tabular, descriptive statistics and Cobb-Douglas production function model were used to fulfill the objectives. It was found that Binadhan-22 production is profitable. The average net return per hectare was Tk. 28876. The net return was highest in Rangpur (Tk. 32480/ha) followed by Naogaon (Tk. 28554/ha), Mymensingh (Tk. 27331/ha) and Bogura (Tk. 27139/ha), respectively. Benefit cost ratio was estimated at 1.39 and 2.04 on full cost and variable cost basis. Cobb-Douglas production function was chosen to determine the factor affecting gross return of Binadhan-22 production. All of the factors namely, human labour cost, power tiller cost, seed cost, fertilizer cost, irrigation cost, insecticides cost were statistically significant and positive. The regression coefficients for farming experience and agricultural training under all areas had negative but significant relationship at 5% and 10% level, respectively. The regression coefficient of age was positive and significant at 10% level. Under all areas, the regression coefficients of education and farm size were positive but not significant. Farmers faced some constraints in cultivating of the variety. The first ranked constraint was lack of availability of seeds (93%). Other constraints were lack of training (61%), lack of capital (38%) and lack of technical know-how (16%). In addition to helping farmers use a better combination of inputs that will create higher productivity and return, effective extension services may also assist farmers in cultivating rice in a way that will contribute to food security and self-sufficiency. Bangladesh J. Nuclear Agric, 38(1): 81-91, 2024