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
Study of combining ability and heterosis for grain yield and its attributing characters in F1 generation of bread wheat (Triticum aestivum L.)
The present investigation comprised of 28 F1s developed by crossing 8 lines viz., K - 9107, HD – 2733, HD – 2888, WH – 1218, K – 1313, DBW – 187, HD – 3086, and DBW – 107 following half diallel mating design. The 36 genotype (28 F1s + 8 Parents) were sown in Randomized Block Design with three replications in timely sown (TS) condition. On the basis of per se performance and GCA effects good general combiners were DBW – 107, K- 9107 and K- 1313 for days to 75% heading , HD – 2733 and K- 1313 for plant height, DBW – 107, K- 1313 and DBW - 187 for days to maturity, HD – 3086 and HD – 2733 for number of tillers per plant, HD – 2733 and HD – 2888 for number of spikelet’s per ear, K- 9107, DBW – 187 and DBW - 107 for ear length, K- 9107, HD – 2733 and HD – 2888 for number of grain per ear, WH – 1218, DBW – 187 and HD - 3086 for 1000 grain weight, DBW – 187 and HD – 3086 for grain yield per plant. Good common cross combiners on the basis of SCA effects and per se performance were HD - 2888 / K – 1313 for plant height, K - 9107 / HD – 3086 and HD - 3086 / DBW – 107 for number of tillers per plant, WH - 1218 / DBW – 187 and WH - 1218 / DBW – 107 for ear length, HD - 2733 / K – 1313 for 1000 grain weight, K - 9107 / WH – 1218 and HD - 2733 / HD – 3086 for weight of grain per ear, HD - 2733 / DBW – 187 and DBW - 187 / DBW – 107 for grain yield per plant. In the present study, fifteen crosses showed highly significant and negative economic heterosis in desirable direction was observed in K - 9107 / K- 1313, K - 9107 / DBW – 187 and K - 9107 / HD – 3086 for days to heading. Four crosses showed the significant and negative heterosis as HD - 2733 / K – 1313, HD - 2733 / DBW – 187 and K - 1 313 / DBW – 107 for plant height. Three cross showed significant and positive heterosis as K - 9107 / HD – 3086 and HD - 3086 / DBW - 107 for more number of tillers per plant. One cross showed significant and positive heterosis K - 9107 / K- 1313 for number of spikelet’s per ear. Three cross showed significant and positive heterosis for ear length as K - 9107 / HD – 3086 and K - 9107 / DBW - 107. Four crosses showed significant and positive heterosis as HD - 2888 / HD – 3086 and K - 9107 / WH – 1218 for number of grain per ear. None crosses showed significant and positive heterosis for 1000 grain weight. Two crosses showed highly significant and positive heterosis as HD - 2733 / DBW – 187 and DBW - 187 / DBW – 107 for grain yield per plant.
Studies on variability in Seedling Tree Population of Pecan nut [Carya illinoensis (Wang) K Koch.] for nut and kernel characteristics in Jammu and Kashmir
Survey was undertaken to explore the existing variability in Pecan [Carya Illinoensis (Wang) K Koch.] of seedling tree origin in Jammu province for utilization its potential in future breeding programmes. Out of total seedling tree population in the region 60 healthy and bearing trees were marked to access the available genetic variability in pecan nut germplasm. Based on the characterization and evaluation of nut and kernel characteristics pecan trees excelled in major economically important characteristics. All the 60 seedling trees exhibited extreme variation for individual traits. The results revealed that nut shape in ventral view varied from circular to ovate, nut shape in cross section varied from narrow oblate to circular, shape of apex from lateral view varied from rounded to acute, length of tip varied from short or absent to long, area covered by spots on nut varied from small to large, kernel adherence to shell varied from weak to strong and intensity of brown colour in kernel varied from light to dark.
Impact analysis in carbon footprint of equally nutritional vegan and omnivorous diets
The relationship between the food consumed daily and its impact on the environment is extremely close, even more when it is obtained either from animal or plant sources. This analysis aimed to assess the carbon footprint of different diets and subdiets belonging to the omnivorous and vegan diets that have emerged recently, such as the plant-based diet, the conventional vegan diet, the Mediterranean diet, and the average Chilean diet, to determine their Greenhouse Gas emissions (GHGE), through the equivalent mass of CO2 (kg CO2e) produced throughout the life cycle of each product belonging to each of these diets. From the proposition of nutritional minutes of equal caloric content for each of these diets, it was possible to quantify the GHGE, thanks to the values obtained through different programs and bibliographic reviews on the subject. It was concluded that at equal caloric and nutritional value, the plant-based subdiet was the one that clearly generated the lowest carbon footprint, due to the preference of plant over animal products in the diet minute. The Chilean average subdiet showed the higher CHGE, about 160 % greater than the plant-based subdiet.
Impact of enriched biocompost application in integration with chemical fertilizers on soil fertility and productivity of rice crop in rice-wheat system
A two year field experiment on rice crop was conducted on sandy loam soil at Crop Research Centre of SardarVallabhbhai Patel University of Agriculture and Technology, Meerut, during 2009 and 2010 to evaluate the impact of enriched biocompost application in integration with chemical fertilizers on soil fertility and productivity of rice crop in rice-wheat system. Growth parameters, yield attributing characters, grain and straw yield of rice crop was affected significantly by different treatments. Nutrient assimilation at different stages by rice crop also varied significantly due to application of different treatments in the study. Rice grain yield increased significantly due to application of additional 25 % NPK over 100 %. Growth parameters and yield attributing characters, improved slightly due to application of biocompost. Application of higher levels of biocompost along with 75 % NPK produced significantly higher grain yield of rice than T2. No significant effect of biocompost enrichment of biocompost was found although slightly higher grain yield of rice was found with the application of enriched biocompost than unenriched at particular NPK level. Micro nutrient contents of both the crops were slightly higher due biocompost application. Availability of primary macro nutrients was slightly higher in the plots receiving super optimal application of NPK or higher biocompost levels.
Perceived Impediments faced by farmers’ vis-à-vis adoption of Zero tillage machine in Indo-Gangetic plain of India: PCA based Construct Validation
Due to increased global warming, world is witnessing the climate change. It is a major threat for declined agricultural productivity. Zero tillage is a sort of Conservation Agriculture practices, can contribute to sustain production and improve the farmers' economy. Rice and Wheat are the world's highest producing and consuming food grains. A short decline in rice–wheat productivity may unease the food security of the world. Rice–Wheat cropping system is a chief cropping system of Indo-Gangetic plain of India. The present study was conducted in West Champaran district of Bihar under the Climate Resilient Agriculture Programme of RPCAU, Pusa. The programme emphasizes the adoption of zero tillage and other Conservation Agriculture practices/Climate Resilient Agriculture practices. Farmers faced various perceived impediments in the adoption of Zero tillage machines. PCA was used to validate the impediments statements considering KMO Sampling Adequacy along with Bartlett's test of Sphericity. There were 24 impediments which were further grouped into four different broad impediments, i.e., production, technical, 'socio-economic, and psychological impediments, and extension impediments. Among the twenty-four impediments, 'non-availability or limited availability of zero tillage machines' was a ubiquitous constraint and consequently, it was dropped as its extraction value was 0.19. The Friedman test value was found to be significant at a 1% level (p<0.01) and the value of the chi-square test was 304.919 with 3 degrees of freedom. Therefore, it can be concluded that there was significant variation between four different broad groups of impediments perceived by the farmers. In Friedman's comparative mean ranking, lesser the mean score better is its rank. Friedman mean score for 4 broad impediments were extension impediments (1.05), technical impediments (2.47), socio-economic and psychological impediments (2.57) and production impediments (3.92) and thus ranked as 1st, 2nd, 3rd and 4th respectively. Hence, it can be interpreted that out of four broad impediments, 'extension impediments' were found most pertinent over the others for less adoption Zero tillage machine.