Commercial Crop Production Research Articles

Beneficial soil fungi enhance tomato crop productivity and resistance to the leaf-mining pest Tuta absoluta in agronomic conditions

Research has shown that soil-borne beneficial microorganisms can enhance plant growth, productivity, and resistance against pests and pathogens and could thus serve as a sustainable alternative to agrochemicals. To date, however, the effect of soil-beneficial microbes under commercial crop production has been little assessed. We here investigated the effect of root inoculation with nine well-characterized bacterial and fungal strains and two consortia on tomato performance under intensive tomato crop management practices. We measured the impact of these root inoculations on plant growth, fruit quality, yield, and pest and pathogen incidence. While most microbial strains showed weak effects, we found that the fungal strains Trichoderma afroharzianum T22 and Funneliformis mosseae significantly increased marketable tomato yield. Moreover, we found that inoculation with most of the fungal strains led to a significant reduction in the incidence of the devastating leaf-mining pest Tuta absoluta, while this effect was not observed for bacterial inoculants. In addition, we found that microbial inoculations did not impact the incidence of introduced natural pest enemies, supporting their compatibility with well-established integrated pest management strategies in horticulture. In summary, the observed general positive effects of soil microbes on tomato yield and resistance reinforce the move toward broader adoption of microbial inoculants in future crop production, ultimately improving agricultural sustainability.

Pixel to practice: multi-scale image data for calibrating remote-sensing-based winter wheat monitoring methods

Site-specific crop management in heterogeneous fields has emerged as a promising avenue towards increasing agricultural productivity whilst safeguarding the environment. However, successful implementation is hampered by insufficient availability of accurate spatial information on crop growth, vigor, and health status at large scales. Challenges persist particularly in interpreting remote sensing signals within commercial crop production due to the variability in canopy appearance resulting from diverse factors. Recently, high-resolution imagery captured from unmanned aerial vehicles has shown significant potential for calibrating and validating methods for remote sensing signal interpretation. We present a comprehensive multi-scale image dataset encompassing 35,000 high-resolution aerial RGB images, ground-based imagery, and Sentinel-2 satellite data from nine on-farm wheat fields in Switzerland. We provide geo-referenced orthomosaics, digital elevation models, and shapefiles, enabling detailed analysis of field characteristics across the growing season. In combination with rich meta data such as detailed records of crop husbandry, crop phenology, and yield maps, this data set enables key challenges in remote sensing-based trait estimation and precision agriculture to be addressed.

Pattern of occupational shift among Malabar migrants: a case study of Kallar grama panchayath in Kerala

The impact of the migration on the economy of Kerala in general and of Malabar in particular needs special mention. Large scale production of commercial crops like rubber, ginger, pepper, arecanut and coconut, advanced methods of cultivation and the introduction of new agricultural crops are some of the aspects to be highlighted. Migration to Malabar turned out to be a mass movement, as migration of half a million people took place without any design, organisation or leadership. Famine was a driving force behind large scale migration. Land prices were very low as compared with Travancore. The increasing tendency of cultivation of commercial crops helped the migration. It is a form of agriculture to agriculture migration, anticipating a long run improvement and can be perceived as a human capital decision. This often leads to change of traditional occupation to other and substantial socio economic development. The immigrant people change their occupation from agriculture or agricultural labour to industrial labour or some other jobs. The present study focuses the changes that take place in the occupational pattern of the Malabar migrants in Kallar Grama Panchayath in Kasaragod district of Kerala

Wildlife corridors in a Southern African conservation landscape: the political ecology of multispecies mobilities along the arteries of anthropogenic conservation

The decline of biodiversity is a key topic in public discussions around the globe. These debates have triggered massive efforts to increase protected areas and to safeguard the corridors connecting them. The wildlife corridors dealt with in this article are mainly thought to facilitate the mobility of elephants and some other large herbivores (for example, zebra and buffalo). Wildlife corridors are not only essential for species connectivity but also an integral part of the booming ecotourism in north-eastern Namibia’s conservation landscapes. Coexistence infrastructure is meant to contribute to economic development and local incomes. Conservancies — community-based conservation organisations in the Namibian context — gazette corridors and market wildlife abundance to ecotourists, potential investors in tourism and commercial hunters. The coexistence of humans and wildlife is challenging, though. Human-wildlife interactions frequently result in damage, and often conservationist environmental infrastructuring runs against the aims of farmers to expand their fields for commercial crop production and to gain pastures for growing cattle herds. It also runs against other governmentally endorsed infrastructuring that brings tarred roads, water pipelines and boreholes. This article analyses contested wildlife corridors as part of a larger conservationist project in the western parts of Namibia’s Zambezi Region.

High sugarcane yield and large reduction in reactive nitrogen loss can be achieved by lowering nitrogen input

Nitrogen (N) fertilisation is critical for sugarcane crop production. Consequently, overuse of N fertiliser in sugarcane is widespread and it is most prevalent in China. Yet, a comprehensive analysis of sugarcane N balance accounting for different reactive N (Nr) loss pathways, crop N use and soil N retention using 15N labelled fertilisers under commercial high-input cropping conditions is lacking. A two-year field experiment with 5 N levels (0–560 kg N ha−1; N0, N210, N300, N390, N560) was conducted to quantify the effect of N rate on sugarcane yield, Nr loss through different loss pathways, crop N use and soil N retention, and to identify an optimal N rate that sustain high yield whilst reducing Nr loss in Southern China. The results showed that optimal N rate (N300) had similar yield compared with farmer practice (N560) for the plant crop and the ratoon crop. Nitrogen leaching and ammonia loss were increased significantly with increase in N rate, with farmer practice recording the highest Nr loss. Compared with farmer practice, under optimal N application, N leaching was reduced from 211 kg ha−1 to 107 kg ha−1 and from 244 kg ha−1 to 165 kg ha−1 for the plant and ratoon crops, respectively. The ammonia volatilization from the plant crop and the ratoon crop in the optimal N treatment was 24.8 kg ha−1 and 27.0 kg ha−1, respectively, which are considerably less compared with the emission from the farmer practice. There was no significant difference in nitrous oxide emission between optimal N rate and farmer practice. 15N labelling studies showed that crop N recovery, soil N residue and fertiliser N lost at the optimal N rate were 20.9%, 24.9% and 54.2%, respectively, as opposed to 12.5%, 14.8% and 72.7%. respectively, under farmer practice. To the best of our knowledge, this study forms the first comprehensive evaluation of sugarcane N balance accounting Nr loss, N use and native N soil stock covering a wide range of N supply simultaneously in the plant and ratoon crops under commercial crop production condition. This study thus provides very valuable new knowledge not only for crop N supply optimisation in high-input sugarcane production systems as in China but also for sugarcane greenhouse gas accounting studies particularly from climate change mitigation and bioenergy production context.

Integrating nutrition in the Sasakawa Africa Association extension services: Knowledge, attitude and practices among smallholder farmers

This survey aimed to establish nutrition-related knowledge, attitudes and practices, and to observe how gender influences household food-related decision-making processes in the Sasakawa Africa Association (SAA) intervention areas in the Oromia and Southern Nation Nationalities and People regions of Ethiopia. The findings would inform implementation of communication for nutrition social and behaviour change among small-holder farmers as part of the SAA corporate strategy on nutrition-sensitive agriculture. The study population was smallholder farmers supported by SAA from which 311 respondents were selected through multistage sampling. Data were collected via a mixed methods approach consisting of a household survey, focus group discussions (FGDs) and key informant interviews (KIIs). Quantitative data were analysed using descriptive statistics while qualitative data was analysed using a narrative and content approach. The study focused on knowledge, attitudes and practices related to production and consumption of micronutrient-rich foods. Majority (59.5%) of the respondents were male. Men were the main decision makers on staple or commercial food crop production and proportion of produced crops to be consumed at home or sold in the market. Women mainly made decisions regarding production and consumption of fruits and vegetables, intra-household food distribution, preservation and storage. There was a lack of knowledge on iron and vitamin A fortified or biofortified sources of food. Nearly three quarters (72%) of women did not meet the minimum dietary diversity for women, a proxy indicator of adequacy of micronutrient intake and diet quality. The mean dietary diversity score was 3.8 with animal source foods being the least consumed. Not having sufficient money to buy food, unavailability of different food groups and poor intra-household food distribution were among the key reasons for lack of diverse diets. Majority of the respondents were aware of the importance of production and consumption of micronutrient-rich foods. However, there was a gap in practice and awareness about biofortified and fortified foods. While most of the respondents had produced fruits and vegetables in home gardens in the three months prior to this survey, more than half (54%) of the respondents thought it was not likely that they would produce fruits and vegetables for home consumption. More targeted nutrition campaigns are required to increase the ability of small-holder farmers to adopt best practices while reducing the barriers associated with access and consumption. Promotion of fruit and vegetable production in home gardens could be considered as option for improving household dietary quality as well as empowering women to make more decisions. Key words: Sasakawa Africa Association, Small-holder farmers, Nutrition, Knowledge, Practices

The Effectiveness and Performance of BT Cotton's Insecticidal Properties under Various Abiotic Stresses: A Review

Over the past two decades, biotechnology has yielded Bt cotton, a huge success in the field of agriculture. In a number of countries, commercial Bt crop production has proven successful. The global food scarcity crisis has been alleviated by transgenic Bt crops, which have improved agricultural productivity. The Bt cotton crop displays variable levels of insect resistance to several environmental abiotic circumstances, including high temperatures, salt in the soil, water logging and scarcity, inadequate nitrogen supply, and humidity. It has been demonstrated that these components lessen the transgenic crop's endotoxin protein level, which in turn reduces the insecticidal efficacy of the crop. In unfavourable climatic conditions, plants have altered nitrogen metabolism and pain in their physiological systems. This article has discussed some of the primary stresses that Bt cotton encounters as well as the underlying mechanisms that explain its variable insecticidal efficacy under both single and combination pressures. While several important elements are covered in this study, such as gene silencing, post transcriptional changes, and protein breakdown, the most important aspect of this field that still need investigation is nitrogen metabolism. A thorough meta-analysis table provides an overview of the several significant research that have been carried out to examine the impacts of stress. A comprehensive study technique is needed to clarify the metabolic and physiological changes that transpire in transgenic cotton crops under high stress. In order to increase the production and performance of the cotton crop worldwide, more research is needed to address the unpredictable insect resistance of Bt crops.

Exploring adequate CO2 elevation for optimum tomato growth and yield under protected cultivation

The adequate elevation of CO2 concentrations (e [CO2]) could not be assessed by constrained analysis of comparative experimental study for optimum plant growth and yield with improved fruit quality owing to the lack of conjunctive investigation of plant parametric responses. Instead, the principal component analysis (PCA) and technique for order preference by similarity to ideal solution (TOPSIS) assessed and quantified the parametric plant responses to identify the adequate level of e [CO2] for optimum plant growth and yield. In this study, tomato plants were grown under an ambient CO2 (a [CO2], 500 μmol mol−1) and three e [CO2] (700, 850 and 1000 μmol mol−1): named EC700, EC850 and EC1000, respectively, in autumn-winter (AW) 2020 and spring summer (SS) 2021 growing seasons to investigate and evaluate the plant parametric responses under e [CO2]. The tomato plant's response with maximum transportability of biomass to fruits was observed under 700 μmol mol−1. The plant height, stem diameter and LAI were enhanced compared to a [CO2] at the optimum level under 1000 μmol mol−1 (by 50.53, 20.98 and 44.44%) and 700 μmol mol−1 (by 22.41, 12.09 and 26.88%) in Aw 2020; Ss 2021, respectively. The optimum yield was increased under 700 μmol mol−1 by 73.95% and 55.58% in Aw 2020; Ss 2021, respectively. EC700 was ranked as a priority by TOPSIS with 0.632 and 0.694 plant response performance index in Aw 2020; Ss 2021, respectively, to get optimum tomato growth, yield, water use efficiency and fruit quality. The results of this study are beneficial for commercial greenhouse crop production by fumigating the adequate level of e [CO2], to reduce the cost of CO2 fertigation, enhance the yield and save the water quantity.

Occurrence, Characteristics, and qPCR-Based Identification of Pectobacterium versatile Causing Soft Rot of Chinese Cabbage in China.

Pectobacterium is one of the most important genera of phytopathogenic bacteria. It can cause soft-rot diseases on a wide range of plant species across the world. In this study, three Pectobacterium strains (KC01, KC02, and KC03) were isolated from soft-rotted Chinese cabbage in Beijing, China. These three strains were identified as Pectobacterium versatile based on phylogenetic analysis of Pectobacterium 16S ribosomal RNA, pmrA, and 504 Pectobacterium core genes, as well as a genomic average nucleotide identity analysis. Their biochemical characteristics were found to be similar to the P. versatile type strain ICMP9168T but differed in response to citric acid, stachyose, D-glucuronic acid, dextrin, and N-acetyl-β-D-mannosamine. All of the tested P. versatile strains showed different carbohydrate utilization abilities compared with P. carotovorum and P. odoriferum, particularly in their ability to utilize D-arabitol, L-rhamnose, and L-serine. Under laboratory conditions, the maceration ability of P. versatile on Chinese cabbage was the highest at 28°C, compared with those at 13, 28, 23, and 33°C. Additionally, P. versatile could infect all of the 17 known Pectobacterium host plants, except for Welsh onion (Allium fistulosum). A SYBR Green quantitative PCR (qPCR) detection system was developed to distinguish P. versatile from other soft-rot bacteria based on the combined performance of melting curve (with a single melting peak at around 85°C) and fluorescence curve (with cycle threshold <30) when the bacterial genomic DNA concentration was in the range of 10 pg/µl to 10 ng/µl. This study is the first to report the presence of P. versatile on Chinese cabbage in China, as well as a specific and sensitive qPCR assay that can be used to quickly identify P. versatile. The work contributes to a better understanding of P. versatile and will facilitate the effective diagnosis of soft-rot disease, ultimately benefitting commercial crop production.

From stressor to protector, UV-induced abiotic stress resistance

Plants are continuously exposed to combinations of abiotic and biotic stressors. While much is known about responses to individual stressors, understanding of plant responses to combinations of stressors is limited. The effects of combined exposure to drought and UV radiation are particularly relevant in the context of climate change. In this study it was explored whether UV-exposure can be used as a tool to prime stress-resistance in plants grown under highly protected culture conditions. It was hypothesised that priming mint plantlets (Mentha spicata L.) with a low-dose of UV irradiance can alleviate the drought effect caused by a change in humidity upon transplanting. Plants were grown for 30 days on agar in sealed tissue culture containers. During this period, plants were exposed to ~ 0.22 W m−2 UV-B for 8 days, using either UV-blocking or UV- transmitting filters. Plants were then transplanted to soil and monitored for a further 7 days. It was found that non-UV exposed mint plants developed necrotic spots on leaves, following transfer to soil, but this was not the case for plants primed with UV. Results showed that UV induced stress resistance is associated with an increase in antioxidant capacity, as well as a decrease in leaf area. UV-induced stress resistance can be beneficial in a horticultural setting, where priming plants with UV-B can be used as a tool in the production of commercial crops.

Trade Effects of Tariff Liberalization of India-UAE CEPA: An Examination

From the study it is concluded that after implementation of the scheme, 93% respondents stated that they have been provided irrigation facilities for farming to enhance agriculture productivity. Around 91.8% respondents admitted that due to the provision of irrigation facilities for farming, the production of commercial crops (89.5% respondents) have increased and 91.8% respondents stated that agriculture lands have been covered under cultivation.

Handicrafts, ODOP and Aspirational Districts: Qualitative Observations from the Field Survey

From the study it is concluded that after implementation of the scheme, 93% respondents stated that they have been provided irrigation facilities for farming to enhance agriculture productivity. Around 91.8% respondents admitted that due to the provision of irrigation facilities for farming, the production of commercial crops (89.5% respondents) have increased and 91.8% respondents stated that agriculture lands have been covered under cultivation.

The Performance of Tirupur Knitwear Cluster on Trade Agreements

From the study it is concluded that after implementation of the scheme, 93% respondents stated that they have been provided irrigation facilities for farming to enhance agriculture productivity. Around 91.8% respondents admitted that due to the provision of irrigation facilities for farming, the production of commercial crops (89.5% respondents) have increased and 91.8% respondents stated that agriculture lands have been covered under cultivation.

An Empirical Analysis of India’s Apparel and Textile Export Policies and Trade Agreements

From the study it is concluded that after implementation of the scheme, 93% respondents stated that they have been provided irrigation facilities for farming to enhance agriculture productivity. Around 91.8% respondents admitted that due to the provision of irrigation facilities for farming, the production of commercial crops (89.5% respondents) have increased and 91.8% respondents stated that agriculture lands have been covered under cultivation.

&lt;p&gt;Growth Trends of Commercial Crops Production, Area, and Yield in India: An Appraisement of the Structural Stability Regression Model&lt;/p&gt;

The significance of agricultural crops to an economy and their structural stability are shown by the production, area, and yield of agricultural output from commercial crops as well as by growth trends and structural stability. This study's objective is to evaluate the development, trend, and structural stability of commercial crop output in India before and after the implementation of the new agricultural policy from 1980 to 2000 and 2001 to 2020. To achieve the goals, secondary data will be used from the Reserve Bank of India's handbook of statistics on the Indian economy (2020–2021). Estimation methods included the least squares method, the t test, and the structural stability regression model. From 1980 to 2000, the average growth rate of commercial crops like Oilseeds, coffee, cotton, raw jute and mesta, sugarcane, tea, and tobacco were 59.1%, 66%, 159%, 21%, 4.4%, 52.2%, and 20.4 percent, respectively. The area under cultivation increased by13.4%, 69.6%, 33.3%, -17%, 31.9%, 33.3%, and -2.4 percent. In the pooled era, these commercial crops' production and area had correlation coefficients of 0.89, 0.93, -0.04, 0.02, 0.93, and 0.63, respectively. The study also shows that there is no significant difference in the variances of production and the yield of oilseeds and significant the area under cultivation. The yield and production of commercial crops are rising, while India's commercial production area and structure have altered over time. The emphasis should be on improving policy implementation and increasing yield through technological innovation, improved cultivation and area, agricultural research and development, and training in India.

Seasonal Population of Drosophila suzukii (Diptera: Drosophilidae) and Pesticide Use Pattern after Its Invasion in Caneberry Crops in Pennsylvania (USA)

Drosophila suzukii (Diptera: Drosophilidae) is a major invasive pest of caneberries (e.g., blackberries and raspberries) and other thin-skinned fruit crops. In recent years, it has been reported as an economically important fruit pest in many countries. In caneberries, the timely detection and management of invasive insect pests such as D. suzukii is important to maintain profitability and avoid fruit export restriction. Invasions by such new pest species in commercial crop production often changes pesticide use patterns and frequency as growers try to control pest populations on their farms. In this study, we examined the seasonal population of D. suzukii and pesticide use patterns before and after D. suzukii invasion in primocane-fruiting raspberry and floricane-fruiting blackberry crop production in Pennsylvania. The results of seasonal monitoring conducted over two years showed higher populations of D. suzukii fruit flies during the settle period. The evaluation of crop-specific pesticide programs showed an increase in pesticide use frequency compared to the crop season before D. suzukii invasion in the blackberry planting. Similarly, over a five-fold increase in pesticide application was recorded in the raspberry planting in the year following invasion. The implications of increased pesticide use patterns in blackberry and raspberry production are discussed.

Infrastructure Development in India: Present Status, Global Positioning and Comparative Picture

From the study it is concluded that after implementation of the scheme, 93% respondents stated that they have been provided irrigation facilities for farming to enhance agriculture productivity. Around 91.8% respondents admitted that due to the provision of irrigation facilities for farming, the production of commercial crops (89.5% respondents) have increased and 91.8% respondents stated that agriculture lands have been covered under cultivation.

Impact of Adequacy of Social Infrastructure on Social Development in Uttar Pradesh

From the study it is concluded that after implementation of the scheme, 93% respondents stated that they have been provided irrigation facilities for farming to enhance agriculture productivity. Around 91.8% respondents admitted that due to the provision of irrigation facilities for farming, the production of commercial crops (89.5% respondents) have increased and 91.8% respondents stated that agriculture lands have been covered under cultivation.

Does Physical Infrastructure Investment Facilitate Resilient and Sustainable Productivity in India? An Empirical Investigation

From the study it is concluded that after implementation of the scheme, 93% respondents stated that they have been provided irrigation facilities for farming to enhance agriculture productivity. Around 91.8% respondents admitted that due to the provision of irrigation facilities for farming, the production of commercial crops (89.5% respondents) have increased and 91.8% respondents stated that agriculture lands have been covered under cultivation.

Energy Infrastructure in India: Challenges and Opportunities

From the study it is concluded that after implementation of the scheme, 93% respondents stated that they have been provided irrigation facilities for farming to enhance agriculture productivity. Around 91.8% respondents admitted that due to the provision of irrigation facilities for farming, the production of commercial crops (89.5% respondents) have increased and 91.8% respondents stated that agriculture lands have been covered under cultivation.