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
Assessment of Training needs of diverse Agripreneurs in India: Mean Weighted Discrepancy Score Approach
Agriculture sector contributes to nutrition security and acts as a steady medium of income generation. In case of horticulture crops, marginal fragmented lands are utilized which otherwise cannot be used for other demanding crops. Despite of high demands, tremendous scope and opportunities in the field, established industries are somehow limited which raises an issue of sustainability of these agripreneurs. A need emerges to classify and comprehend the training needs of agripreneurs to enhance the skill and productivity in the region. The study was conducted in Kumaon Division of Uttarakhand where Nainital and Almora districts were selected purposively. Total 70 agripreneurs were selected through snowball sampling method. A semi-structured interview schedule was used for data collection. Descriptive research design was used to meet the objectives of the study. The study showed that respondents had low level of information-seeking behavior (42.86%), medium level of innovativeness (57.14%), risk-taking ability (57.14%), and achievement motivation (60%). A whooping number of respondents hold micro-scale enterprises (97.14%). They had low levels of entrepreneurial experience (55.71) and had low institutional support (84.28%). Regarding the training needs of agripreneurs, it was found that the majority of respondents had maximum training needs in value addition and processing in mushrooms and vegetable production. Present study also revealed that there was least use of extension education methods among respondents that clearly indicated the limited contacts of agripreneurs from personal cosmopolites and extension help for which future dimensions of extension help needs to be opened in the sector.
In vitro chromosome doubling potential of colchicine and oryzalin for the production of doubled haploid plants in marigold (Tagetes erecta L.).
An effective chromosome doubling protocol was developed in African marigold (Tagetes erecta L.) Cv. Local Orange. The different concentrations of colchicine (50, 75 and 100 mg/L), oryzalin (50, 75 and 100mg/L) and the combination of the two above mentioned anti-mitotic agents (50 and 75mg/L) was used on anther derived haploid nodal segments/explant of marigold for different durations (18 and 38 hours for each concentration). Based on the results obtained, highest percent diploidized shoots (75.40% and 64.80%) was found in experiments where nodal segments were treated with oryzalin @ 50mg/L for 38 hrs and colchicine @ 100mg/L for 38 hours respectively. In case of combination highest percent diploidized shoots was 54.4% which was found with colchicine plus oryzalin @ 75mg/L of each for 38 hours. However, the highest survival of shoots was found in control (no chemical treatment) in all the three categories. Increasing the concentrations of applied antimitotic agents led to the significant reduction in the survival rate of nodal explants, especially when the explants were exposed for longer durations.
Optimizing bio-organic preparations and Sharbati wheat varieties for higher organic wheat productivity and profitability
In JNKVV, Jabalpur, a research was conducted to examine the effects of biodynamic preparations in the context of comparisons of conventional, organic, and biodynamic systems and varied varieties of wheat. Seven BOP (bio-organic preparations) served as the treatments of main plot for the experiment's split plot design, while four different wheat varieties served as the sub plot treatments, each of which was replicated thrice. Observations based on plant population, various crop’s growth studies were noted at the 30, 60, 90 DAS and at the harvest. However, the crop growth rate (CGR), relative growth rate (RGR) and net assimilation rate (NAR) was computed at 30-60 and 60-90 days intervals. The yield attributing characteristics viz., length of ear head, number of effective tillers per meter square, no. of grains per ear head, weight of grains per ear head, and the test weight and finally grain and straw’s yield were recorded at harvest. Finally, the economic viability of treatments were determined in the terms of gross monetary returns, cost cultivation, net monetary returns and benefit- cost BC ratio on the per hectare area basis. Data pertaining to the various parameters subjected to the statistical analysis for the interpretation of the results. The combined application of BD500+BD501+P+VC was succeeded by P+VC and BD500+BD501+VC, gave a notable increase of 22.29, 18.26, and 6.38 per cent on grain yield of wheat over the sole application of BD500, BD501, and P each with VC. Considerably higher grain (2462.18 kg per ha) and straw yields (3149.88 kg per ha), including harvest index (HI) (43.73). In terms of profitability, BD500+BD501+P+VC was superior to BD: 500+BD: 501+VC and P+VC. Aside from that, it was noted that the use of BD-500+BD-501 or P+VC in JW-3020 and HW-2004 as well as BD500+BD-01+P or P+VC in C-306 and Sujata stood more lucrative.
Genome-wide association studies for important agronomic yield attributing traits and resistance to major diseases in rice (Oryza sativa L.)
Genome-wide association mapping studies (GWAS) in elite breeding line populations aim to identify marker-trait association (MTA) relevant to agronomic traits. Unlike previous GWAS studies that primarily utilized diverse collections of crop germplasm, we had specifically focused on a breeding population to ensure the applicability of our findings to breeding programs. To achieve this, we genotyped the breeding population using genotyping-by-sequencing (GBS) with 71 single nucleotide polymorphism (SNP) markers. Our objective was to expedite the selection process in the breeding program by performing GWAS. We successfully identified 37 MTA associated with agronomic traits. Chromosome 7 exhibited the highest number of significant associations, with eight MTAs. Notably, 27% of the identified MTAs coincided with or were in similar genomic regions as previously reported QTLs or genes from previous studies. The remaining 73% of the MTAs represented new associations that were not previously identified. These findings can be used to boost yield and comprehend the genetic mechanisms of rice by cloning the genes underlying the features and applying them to MAS. SNP markers linked to certain loci can be used to combine advantageous alleles to create new lines with enhanced yield traits.
Substituting Commercial Fish Feed with Azolla: Assessing Growth Performance in a Mixed Culture of Pangas (Pangasianodon hypophthalmus) and Grass carp (Ctenopharyngodon idella)
The aquatic fern Azolla Pinnata, known for its substantial protein, vitamin, and mineral content, was investigated as a potential substitute for commercial fish feed (CFF) in the polyculture of Pangas and Grass carp reared in domestic wastewater. A 90 days feeding trial was conducted to determine the growth performance in polyculture of Pangas and Grass carp fingerlings fed Azolla by completely replacing CFF following completely randomized design. Fishes were reared in five treatments, and fed with gradual replacement of CFF by A. Pinnata viz., T1 (100% P. hypophthalmus fingerling + 100% CFF), T2 (80% P. hypophthalmus fingerling and 20% C. idella fingerling +80% CFF and 20% A. Pinnata), T3 (60% P. hypophthalmus fingerling and 40% C. idella fingerling+60% CFF and 40% A. Pinnata), T4 (100% C .idella fingerling +0% CFF and 100 % A. Pinnata).Control was designed as (50% P. hypophthalmus fingerling and 50 % C. idella fingerling + 50% CFF and 50% A. Pinnata).Each treatment having different stocking ratio followed by different feeding percentage of Azolla and CFF on the basis of stocking density and fish body weight. The WGP, and SGR were found in increasing trend with increasing A. Pinnata inclusion level upto T2 groups, while these parameters were not varied significantly upto T4, after that a significant decreasing trend was reported (T4 group). The lowest FCR and CFF cost were reported in T2 group as compared to other treatments and control group. The present study reveals that the best stocking ratio for Pangas and Grass is 80:20 and 20% CFF can be replaced with fresh A. pinnata without any detrimental effects on growth of Pangas.