AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (AMA) (issn: 00845841) is a peer reviewed journal first published online after indexing scopus in 1982. AMA is published by Farm Machinery Industrial Research Corp and Shin-Norinsha Co. AMA publishes every subjects of general engineering and agricultural engineering.
WOS Indexed (2025)
27 Nov 2025 (Vol - 56 , Issue- 11 )
30 Nov 2025 (Vol - 56 , Issue 11 )
Aim and Scope :
AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (ISSN: 00845841) is a peer-reviewed journal. The journal covers Agricultural and Biological Sciences and all sort of engineering topic. the journal's scopes are in the following fields but not limited to:
Agricultural and Biological Sciences
Electrical Engineering and Telecommunication
Electronic Engineering
Computer Science & Engineering
Civil and architectural engineering
Mechanical and Materials Engineering
Transportation Engineering
Industrial Engineering
Industrial and Commercial Design
Information Engineering
Chemical Engineering
Food Engineering
Farmers’ satisfaction with climate-resilient agriculture technologies in the coastal low-lying region of Kerala
The present study was intended to measure farmers’ satisfaction with climate-resilient agriculture (CRA) technologies demonstrated by Krishi Vigyan Kendra-Alappuzha in the coastal low-lying region of Kerala. A total of six technologies and 100 beneficiary farmers were selected randomly for the purpose of this study. Farmers’ satisfaction with each CRA technology was analyzed on the basis of its capacity to address climate-related issues. Primary data were collected from the beneficiary farmers using a schedule on a five-point continuum with a score ranging from 4 to 0. The CRA technologies were then ranked using a satisfaction index, and the most satisfied CRA technology was identified with the help of Duncan’s Multiple Range Test (DMRT). Furthermore, the Mann-Whitney U test was employed for the comparative analysis of the CRA technologies related to both crop production and livestock rearing as per the perceived farmers’ satisfaction. The results revealed that the farming community was highly satisfied with all of the CRA technologies, except two, i.e., intercropping short-duration cassava, related to crop production, and EnerFAT, related to livestock rearing. The comparative analysis of the CRA technologies revealed that there was no significant difference between the perceived levels of farmers’ satisfaction with crop-related technologies and livestock-related technologies.
Effect of soil salinity on germination and survival of tomato (Solanum lycopersicum L.)
The study was conducted at the Vegetable Research Farm, Department of Vegetable Science, Punjab Agricultural University, Ludhiana to study the effect of soil salinity on germination and survival of tomato. The 2 dS/m, 4 dS/m, and 6 dS/m levels of salinity were induced by using sodium chloride, magnesium sulphate and calcium chloride in ratio 2:1:1. Seeds from 155 tomato genotypes were sown in plug trays, with each genotype having two sets of trays. For one set, normal water (tab) was used initially, and then saline water was applied after the seedlings reached the two-leaf stage (10-12 days after sowing). For the second set, saline water was applied immediately after sowing to evaluate germination under salt stress. The results categorized the genotypes into 18 tolerant, 92 semi-tolerant, and 45 susceptible to salinity based on nursery and morphological screening trials. Among the 18 tolerant genotypes, PTNI-203, PTNI-202, and PTNI-8 were suggested for further research in salt-affected areas.
SPECTROPHOTOMETRIC ANALYSIS OF NECTAR SUGAR COMPOSITION BY DIFFERENT BEE PLANT SPECIES
The investigations entitled “Spectrophotometric analysis of nectar sugar composition by different bee plant species” were carried out at G.B. Pant University of Agriculture and Technology, Pantnagar during the year 2020-21. Among the three species of mustard, highest total sugar content (0.384±0.018 mg/flower) was recorded at 24 hours of flower opening in B. rapa var. yellow sarson, while minimum total sugar content was recorded just after opening of flowers (0 hours). Mean sugar concentration per flower was highest (33.34 per cent) in B. rapa var. toria, whereas least (27.26 per cent) in B. juncea. The total energy present per flower per day was highest in B. rapa var. yellow sarson with 0.37; 6.43; 8.63 and 4.58 J/flower/day at 0; 24; 48 and 72 hours respectively, and least in B. rapa var. toria with 0.25; 4.84; 3.88 and 2.75 J/flower/day at 0; 24; 48 and 72 hours. Furthermore, highest mean nectar sugar composition of glucose (51.33±0.41) was recorded in B. rapa var. toria, fructose in B. rapa var. yellow sarson (44.27±0.35) and highest sucrose concentration was found in B. juncea (0.605±0.047). Among the other eight bee forage plant species, berseem flowers were found to be richest floral nectar resource with highest total sugar content (0.672±0.009 mg/flower), total nectar sugar concentration (38 per cent), energy per flower per day (11.24 J at 72 hours) and carbohydrate composition with glucose (53.12±0.015), fructose (36.21±0.179) and sucrose concentration (4.29±0.006).
Impact of altering tree spacing on the anatomical and reproductive behaviour of Guava (Psidium guajava L.) cv. Shweta.
Guava (Psidium guajava L.) is a tropical fruit native to tropical America and is known as the “Apple of the tropics.” Guava cv. ‘Shweta’ is the most promising cultivar of guava grown in both tropics and subtropics because of its wide adaptability. In the northern states of the country, fruits are harvested in the months of August-September during the rainy season and in December-January during the winter season. A study was therefore undertaken to assess the effect of tree spacing on guava anatomical and reproductive behaviour. The trees were planted at six different spacings, i.e. T1 (6x5 m), T2 (5x5 m), T3 (5x4 m), T4 (5x3 m), T5 (4x4 m) and T6 (4x3 m) to estimate the yield under different spacings. This investigation revealed that characters like stomatal density and crotch angle increase with increased plant spacing, while leaf size has a reversed relation with spacing. Fruiting attributes for rainy and winter seasons viz. flower bud density (38.86 % and 14.32 %), fruit set (66.12 % and 44.67 %) and fruit retention (61.22 % and 50.22 %) were recorded higher in trees spaced at T1 (6x5 m) as compared to other spacings, whereas trees planted at closer spacing (4x3 m) has taken higher 76 days from fruit set to maturity. The number of fruits per tree, fruit yield per tree, fruiting density and yield efficiency (maximum in 5x5 m spacing) were increased with an increase in plant spacings (4x3 m to 6x5 m) while seed number per fruit was found to be decreased. Thus, the results revealed that guava planted at 5x3 m (267 trees/ acre) registered a higher yield per acre than other treatments. However, trees spaced at 5x5 m had significantly higher yields than trees planted at recommended spacing, i.e., 6x5 m.
Smallholding farms: Resource Allocation on Crop Productivity and Soil Fertility
A field survey in participatory mode on farm characteristics such as socio-economic conditions, farm management practices and income were carried out with a total of 240 farmers selected randomly who were further categorised into three Resource groups (RSG1-wealthy, RSG2-medium and RSG3 -poor). Farmers managed several organic and mineral resources to attain their production goals. The net flow of resources was not equal creating areas for carbon and nutrient accumulation with their depletion. Resource flow under all three groups of farmers exhibit a positive N and P balance while K mining of -2.4 kg ha-1 and -0.51 kg ha-1 was chronicled in RSG1 and RSG2, respectively. This emphasizes that nutrient stocks of individual plots within farms and village territories can differ considerably due to resource management. Thus, plots in RSG3 which received substantial amounts of nutrients from animal manure and household waste, maintain relatively high level of productivity. Non-significant variation was observed in labour productivity for all the three groups of farmers. Differences in resource ownership and bio-physical circumstances lead to different opportunities for individual farmers even within the same area. As farming is very closely associated with the environment, it will have greater impact on soil, water, landscape, and biodiversity. Hence, there is a need for region/location specific policy to provide agricultural enterprises specific price, insurance, and income support to insulate the farmers from market fluctuations and conserve the agro-ecological assets, maintain ecological balance through sustainable use of natural resources.