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)
13 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
Enhancing quality parameters of sesame and potato through organic and inorganic nutrient management practices in sesame -potato cropping sequence
The current study was conducted at the ICAR - CPRI-RS, Gwalior (M.P.) during the kharif and rabi seasons 2020-21 and 2021-22 on the quality parameters of sesame and potato crops in sesame – potato sequence as influenced by organic nutrient management. The experiment was designed having seven treatments in the Randomized Block Design (RBD) with four replications. The organic treatment comprised of crop residue @ 25 t ha-1 with bio-fertilizer (Azotobacter and PSB), FYM @25 t ha-1, vermicompost @7.5 t ha-1, neem cake @ 5 t ha-1 in different treatments including control, 100% RDF and INM (RDF+FYM). The result revealed that among all the organic manures, RDF and integrated treatments, oil content was non-significant but effect on protein content, protein and oil yields were found significant during both the years. Treatment T7 (100% RDF + FYM @ 25 tha-1) showed best results in quality parameters i.e., oil yield (454 and 427 kg ha-1), protein content (19.1 and 18.8%) and protein yield(180 and 163 kg ha-1)as compare to other treatments in sesame crop during 2020-21 and 2021-22. Application of 100% RDF NPK (inorganic practices) gave higher oil content (48.5 and 49.4%) during 2020-21 and 2021-22. Application of 100% RDF + FYM @ 25 t ha-1recorded higher starch content (14.17 and 14.01%), starch yield (1199.4 and 1257.4 kg ha-1) and protein yield (670.1 and 726.6 kg ha-1) but crop residue @ 25 t ha-1 + bio-fertilizer (Azotobacter + PSB, @ 1 l ha-1each respectively) procured the highest protein content (8.32 and 8.26%) in potato during both the years and other quality parameters i.e., tuber dry matter content, water % and true density % which were observed non-significant during both the years in potato crop.
Assessment of Major Sources of Greenhouse Gas Emissions in Livestock Farming Systems Using Life Cycle Assessment Methodology
The present study employs the Life Cycle Assessment (LCA) methodology to evaluate the environmental impacts associated with greenhouse gas (GHG) emissions and emission intensity (Ei) from milk production, considering a system boundary extending from “cradle to farm gate.” The research was undertaken to estimate the percentage contribution of various farm activities namely enteric fermentation, fertilizer application, electricity and diesel use, and dung management to the total global warming potential (GWP) across crossbred cattle farms in eight districts of Haryana. The farms were categorized into three production levels: low, medium, and high. Results identified enteric fermentation as the principal hotspot of GHG emissions, followed by emissions arising from fertilizer use and electricity consumption. No significant differences were observed in enteric emissions among the three production groups. However, statistically significant variations were found in the emission percentages attributable to fertilizer, electricity, diesel, and dung management. The findings underscore the need for targeted mitigation strategies to enhance the environmental sustainability of milk production systems in the region.
Perception of Input dealers on Diploma in Agricultural Extension Services for Input Dealers (DAESI) program
Agriculture and allied industries are major contributors to India’s wealth and GDP. Public extension services aim to support farmers but have limited reach. With the help of input dealers, farmers can access modern techniques. Strengthening these services is vital to doubling farmers’ income. The study was conducted in 2025 to analyze the perception of agricultural input dealers towards the DAESI program and to determine the direct, indirect, and largest indirect effects of their profile characteristics on perception. Fifty DAESI input dealers trained by DATC, Davanagere during 2018–2022 were selected as respondents. The results revealed that 46.00 per cent of the dealers had a better perception, 30.00 per cent had a good perception, and 24.00 per cent had a poor perception of the DAESI program. Based on direct effects, entrepreneurial orientation (X13), mass media exposure (X14), and extension participation (X12) were ranked as the top three influencing factors. Similarly, for indirect effects, mass media exposure, entrepreneurial orientation, and extension participation occupied the first three ranks. Path analysis indicated that these three variables had the most significant direct, indirect, and largest indirect effects on enhancing perception. The study suggests that improving classroom teaching, practical sessions, record maintenance and assignments can further enhance input dealers’ perception of the program. Additionally, organizing regular entrepreneurship development training and involving DAESI-trained dealers in extension activities such as demonstrations and farmer interactions can strengthen their engagement and perception towards the DAESI program.
Host Plant Resistance of Rice genotypes against Brown Spot disease under Field Conditions
Rice (Oryza sativa L.) plays a pivotal role in ensuring food security, particularly in Asia, where it sustains a majority of the population. Brown spot, caused by Drechslera oryzae, is a significant foliar disease affecting rice productivity, especially under rainfed and humid conditions. Effective screening and identification of resistant genotypes remain vital for developing durable resistance. In this context, a field study was conducted during Kharif 2023 at Bihar Agricultural University, Sabour, to evaluate 208 rice genotypes of the Donor Screening Nursery (DSN) for resistance to brown spot. Genotypic screening revealed substantial variation in disease reaction. None of the genotypes exhibited complete immunity (disease score ‘0’), while 17 genotypes- KNM115, KNM15361, KNM15236, 19202, 19026, 19027, 680-2, RP-Patho-1, RP-Bio-Patho-10, BPT 5204, C101LAC, C101A51, RNR 31581, RTCNP-10, RTCNP-138, NLRBL-8, and NLR 3595—were identified as resistant (disease score ‘1’). Additionally, 42 genotypes were moderately resistant, 68 moderately susceptible, 61 susceptible, and 20 highly susceptible. The identification of resistant sources through such large-scale screening forms the foundation for resistance breeding and informs integrated disease management strategies to mitigate brown spot impact in rice-growing regions of Eastern India.
Molecular identification and Phylogenetic Relationships of Erysiphe pisi causing Powdery mildew of Fieldpea (Pisum sativum L.)
Powdery mildew fungi, primarily belonging to the genus Erysiphe, are among the most destructive obligate biotrophic pathogens, infecting a wide range of plants and causing significant yield losses worldwide. Accurate species-level identification is essential for understanding host specificity, disease epidemiology, and devising management strategies. However, morphological features used in traditional taxonomy are often insufficient, as conidial morphology and chasmothecial characters may be variable or absent under natural conditions. Molecular tools, especially sequencing of the internal transcribed spacer (ITS) region, have greatly improved the resolution of fungal taxonomy and are widely applied in powdery mildew systematics. In the present study, we analyzed 17 Erysiphe isolates collected from Fieldpea in Central U.P region to assess their molecular diversity and phylogenetic affiliations. ITS sequences were subjected to BLAST searches, multiple alignment, and phylogenetic reconstruction using the Maximum Likelihood method with bootstrap support.. The isolates grouped into major clades, corresponding to known species such as E. pisi. The study demonstrates the presence of substantial sequence variation among Erysiphe isolates and underscores the utility of ITS-based molecular identification in resolving complex taxonomic relationships. Our findings contribute to the understanding of Erysiphe diversity in Central U.P region and provide a foundation for future studies on host–pathogen interactions and disease management.