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)
07 Dec 2025 (Vol - 56 , Issue- 12 )
31 Dec 2025 (Vol - 56 , Issue 12 )
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
Diversity Assessment of Seedling Origin Guava (Psidium guajava L.)
Diversity among seedling origin guava population growing in sub-tropical region of Jammu was assessed during the year 2017-18. Highest value of range was recorded as 165.34 for the character number of seeds per fruit followed by 90.47 for fruit weight, 88.47 for pulp percentage and 86.49 for fruit volume with mean values of 226.33, 142.7 g, 97.96 per cent and 146.9 cc respectively. Phenotypic coefficient of variation was higher than genotypic coefficient of variation for all the characters. Heritability values for different characters ranged between 37.14 to 81.14per cent. High heritability coupled with high genetic gain was recorded for tree volume, trunk girth, 100 seed weight, total soluble solids, acidity, ascorbic acid, and yield indicating additive gene action controlling these characters. On the basis of cluster analysis 70 genotypes were grouped into five clusters showing 124.71 to 185.20 inter-cluster and 274.40 to 834.74 intra-cluster distance. The clustering pattern also indicated that geographical diversity was not an essential factor for clustering of genotypes from a particular place into a specific cluster. Different characters contributed to a different extent towards total variability. Seed weight per fruit, Tree volume, pulp weight, non-reducing sugars, 100 seed weight, number of seeds per fruit and fruit weight were the major contributors towards total variation which contributed 37.55 per cent, 26.12 per cent, 12.80 per cent, 10.22 per cent, 5.25 per cent, 3.72 per cent and 3.14 per cent towards total variation in the population.
Influence of Irrigation Schedule and Inorganic Amendments Through Fertigation on Nutrients Uptake and Soil Fertility of Mandarin (Citrus reticulata Blanco.) cv. Nagpur Mandarin
The field experiment entitled “Effect of Irrigation Schedule and Fertigation Level on Nutrient Uptake and Soil Fertility of Mandarin (Citrus reticulate Blanco.) cv. Nagpur Mandarin" was conducted by deploying 10 treatments in RBD with four replication covering 160 plants in all during two successive years commencing from March 2019 to February 2021 at the Instructional Farm, Department of Fruit Science, College of Horticulture and Forestry, Jhalawar, Rajasthan. The experiment revealed that among various irrigation schedule treatments, the application of treatment I1 (100% ETc) was observed significantly superior over other treatments concerning leaf parameters in which the increase in leaf NPK content particularly N: 2.53%, P: 0.23%, K: 1.72% and soil NPK particularly N: 319.13 kg ha-1, P:24.58 kg ha-1, K: 290.92 kg ha-1 at 0-15cm depth were observed under this treatment I1 (100% ETc). As regard to individual effect of fertigation, maximum leaf NPK content (N: 2.56% P: 0.23%, K: 1.75%) and soil NPK particularly N: 322.28 kg ha-1, P: 26.10 kg ha-1, K: 295.25 kg ha-1 at 0-15cm depth were observed under the treatment F1 (100% RDF). Among the interaction of irrigation schedule and fertigation levels, leaf and soil parameters were observed significantly superior in treatment I1F1 (Irrigation Scheduling at 100 % ETc + Fertigation 100 % RDF) while treatment I2F1 (Irrigation Scheduling at 80 % ETc + Fertigation 100 % RDF) was registered followed by with it in most of the leaf parameters and soil parameters was observed at par with treatment I2F1 studied.
Impact of Agricultural Technology Management Agency Model in Agricultural Extension System to Promote Sustainable Agriculture in Uttar Pradesh, India
In the mid-1990s, the World Bank and the Government of India began to study different ways to extend systems. So a new decentralized extension strategy was created, focusing on diversification in Agriculture, revenue generated by farm, and employment opportunities prospects. The Agricultural Technology Management Agency (ATMA) concept was used at the district level to address these system issues and help the state extension system plan, implement, and monitor district extension operations. ATMA intended to test recent technological transfer methodologies, organizational structures, and standard operational procedures. Beneficiaries (targeted farmers) were compared pre- and post-intervention to measure the ATMA model's field impact. To compare the agro-economic conditions of the target farmers over time, baseline and effect evaluation questionnaires were completed. In order to reflect on both "with project" and "without project" situations, it was vital to involve farmers from non-project areas in the study.
Genetic Variation and Character Association Studies in Segregating Population of Bread Wheat [Triticum aestivum L.]
The current study used an Augmented Block Design to analyses 50 wheat genotypes (segregating population) and 5 controls at the research farm of the Department of Genetics and Plant Breeding, School of Agriculture, Lovely Professional University, Phagwara, Punjab. The present study revealed that the phenotypic coefficient of variation was higher than the corresponding genotypic coefficient of variation for all the traits which might be due to interaction of the genotypic with the environment to some degree or other explaining environmental factors influencing the expression of these characters. High heritability coupled with high genetic advance was observed for number of productive tillers per plant, number of spikelets per ear, ear weight, number of ears per plant, number of grains per ear, test-weight, biological yield per plant, harvest index, grain yield per plant. Both phenotypic and genotypic correlation when analyzed, days to 50% heading, plant height, number of productive tillers per plant, number of ears per plant, days to maturity and harvest index have shown significantly positive correlation with grain yield per plant. In present study, Path co efficient revealed that among fourteen characters, ten characters have shown direct positive effect on grain yield per plant which are number of productive tillers per plant, number of spikelet’s per ear, ear length, biological yield per plant and harvest index, days to maturity, plant height, ear weight, number of ears per plant, test-weight and four characters have shown direct negative effect on grain yield per plant which are days to 50% heading, chlorophyll content, canopy temperature and number of grains per ear.
Awareness and Knowledge of farm women regarding climate change
Climate Change directly affects agriculture production & production efficiency. It affects agriculture in terms of productivity, agriculture practices, environmental effects, rural space and adaptation. Climate change is the biggest threat to agriculture in India but still the farmers are not fully aware of climate change and its indicators, causes & impacts. The objective of the study was to know the extent of awareness and knowledge of farm women regarding climate change, its effects and situation specific coping strategies. The study was conducted in village Gudli of Mavli block from Udaipur district of Rajasthan State. For this, the data was collected from 100 farm women. The data was analysed using appropriate statistical tools like frequency, percentages. More than half of the respondents i.e. 58 per cent had medium and 42 per cent had high awareness about causes of climate change. A majority (85%) of the respondents were aware about the ill effect of pesticides, increase of disease of crop (62%) and increase in infestation of pest due to climate change (47%). The awareness regarding global warming (68%), use of pesticides & burning of fossils and farm waste was not there to most of the respondents (51-54%). The knowledge about flood was nil in all the respondents (100%) as Rajasthan is not flood prone area.