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 (2026)
07 May 2026 (Vol - 57 , Issue- 05 )
31 May 2026 (Vol - 57 , Issue 05 )
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
Influence of Moringa Oleifera Leaf Meal on the Performance of Layer Japanese Quails (Coturnix Coturnix Japonica)
The potential influence of Moringa oleifera leaf meal on the performance and cost economics of layer Japanese quails was evaluated in the year 2020-21. A sufficient quantity of crude protein (30.21%) and fiber (8.12%) were found in the M. oleifera leaf meal. Statistical analysis at the end of sixteen weeks experiment revealed that growth characteristics, nutrient utilization, production, and carcass characters exhibited significantly enhanced values in M. oleifera leaf meal-incorporated diets. The liver and kidney function tests exhibited no organ toxicities in the birds following the dietary incorporation of M. oleifera leaf meal. On top of it, M. oleifera leaf meal-incorporated diets showed a reduction in feed cost per kg egg production in the range of Rs. 20.91-56.17. Of various inclusion levels used in the experiment, 2% was found best for all the parameters studied. At last, M. oleifera leaf meal can be recommended in the diet of layer Japanese quails as a safer, eco-friendly, and cost-effective technology.
Optimization of plant density and nutrient level for nutritional quality of guava under high density system of orcharding in subtropical conditions
Grafted plantlets of guava were planted at a density of 4444, 5000, 6666 and 10000 plants ha-1 to standardize the optimum population density and nutrient level for nutritional quality of guava under subtropical conditions of northeast India. The experiment was set up at the AAU–Horticulture Research Station, Assam, India with two factors comprising four planting densities and three nutrient levels, and twelve treatment combinations with three replications were imposed on newly planted guava plants. The plants accommodated at lower densities produce superior quality fruits in respect of all chemical constituents throughout both seasons. The fruits of the plant at density 4444 plants ha-1 in winter and 5000 plants ha-1 in rainy season were found to contain the highest amount of TSS (11.63 & 10.73ºB), reducing sugar (4.66 & 4.46%), total sugar (8.27 & 7.85%), ascorbic acid (202.75 & 196.47 mg/100 g) and pectin (1.17% & 1.08%) respectively in the first year and the trend was reversed in the second year and plants under the highest density (10000 plants ha-1) yielded fruits with lowest qualitative traits irrespective of season and year. The nutrient level also had a significant influence on the quality attributes of fruit, an increased trend was observed with increasing level, and the highest nutrient level (70:45:35g NPK plant-1 for the first year and 130:75:65g NPK plant-1 for the second year) demonstrated significant superiority. The winter season crop was superior to rainy season in terms of chemical characteristics of fruit during both years of investigation.
Genetics of immune-competence traits in a complete 3x3 diallel cross of Indian native chicken breeds with CARI-Red
Two Indian native chicken papulation, Aseel Peela (AP), Kadaknath (KN) and one exotic papulation, CARI-Red (CR) maintained at ‘Desi fowl’ unit of ICAR - Central Avian Research Institute were utilized for making full 3x3 diallel cross experiment. General immune-competence of birds (Sample size - 30 birds per genetic group) was evaluated as humoral response as well as cell mediated immunity (CMI) response. The humoral response was studied by estimating the RD-HI antibody titres by Haemagglutination inhibition test [1], while CMI response was estimated as food index [2] against the injection of mitogen (PHA-P). Full diallel analyses were done by using two models model A and model B. Higher values of foot index indicated presence of better cell mediated immunity response to PHA-P and higher values of HI titre indicate better humoral immunity against NDV. The analyses of variance for cell mediated immune response and humoral immune response revealed highly significant difference for GCA at 15 wk of ages in male, female and combined sex in case of model A and B which indicates the additive type of genetic variation. Cross KN x AP had higher and positive Heterosis percentage for cell mediated immune response against PHA-P. In case of humoral immune response against NDV cross CR x AP had highest Heterosis percentage than other crosses.
Effectiveness of Krishi Vigyan Kendra (KVKs) in Extension Service Delivery in Chhattisgarh State of India
The effectiveness of an extension organization can be defined as how well it performs its activities to attain the pre-determined objectives. In this present context KVKs are a key organization for transfer of technology based advisory services to the farmers at district level. The present study was conducted purposively in Chhattisgarh state, with a view to evaluate perceived effectiveness of Krishi Vigyan Kendra by the beneficiary farmers in utilization and accessibility of extension service delivery. Chhattisgarh comprises of three agro-climatic zones, out of that one district were selected randomly from each agro-climatic zones. From each selected district, 40 KVK beneficiary farmers were selected randomly which constitute a total sample size of 120. An ex-post facto research design was used for this study. The effectiveness of the extension organization (KVK) in technology advisory and delivery services was measured by effectiveness index developed for this purpose. The extension services rendered by KVK were found to be medium and low in effectiveness by majority (39.17%) of the farmers. About 11.70 percent of the farmers found the extension services is highly effective, with a mean effectiveness of 41.19±14.36. Extension services rendered by KVK were found to be medium in effectiveness by major share of the farmers followed by low in effectiveness. KVKs is the key institutions at the district level for transfer of technologies leading to a transformation of the agricultural and allied sector in the country. The constant extension and advisory support in addition leads to better adoption of technologies which further leads to increase in yield and income and ultimately satisfaction of the farmers towards the extension service.
Pattern of weight gain of pure and crossbreds in a complete 3x3 diallel crossing of Indian native chicken with CARI-Red
A complete 3x3 diallel cross experiment involving 3 chicken breeds namely Aseel Peela (AP), Kadaknath (KN) and CARI-Red (CR) were used for comparison of performance of pure and crossbred chickens for body weight gain and to estimate the relative importance of different types of gene action involved in the inheritance of these trait. The chicks were brooded up to 6 weeks of age in four tiers battery cage brooder then shifted to deep litter and managed with ad libidum feeding and watering. Gain in body weight was calculated at biweekly interval up to 20 wks of age. Further, data were subjected to combining ability and other effects analysis using important models namely, Griffing (1956), method 1 under model 1. Among the purebreds CR had higher body weight gain in male, female and combined sex at 0 to 20 wk of age except, at 15-16 and 19-20 wk of age AP had higher body weight gain in combined sex. Among the cross bred, cross AP x CR had highest body weight gain in combined sex at 0-8, 0-16 and 0-20 wk of age. The analysis of variance between mating revealed highly significant difference at all ages of measurement except at 11-12 wk of age, among genetic groups are also revealed highly significant difference at all ages of measurement in male, female as well as combined sex. It was observed that the overall performance for body weights gain in crossbred were significantly better than the pure bred performance. Body weight gain revealed highly significant difference for general combining ability (GCA) at all ages of measurement in male, female and combined sex except, at 17-18 wk of age in female. However, Analyses of variance for specific combining ability (SGA) revealed highly significant difference in irrespective of sex at all ages of measurement except, at 5-6 wk of age in female, 11-12 wk of age in male, female as well as in combined sex and at 19-20 wk of age in male and combined sex. Reciprocal effects were also significant at all the ages of measurement irrespective of sex except at 11-12, 15-16 and 19-20 wk of age in male. CR had higher and positive GCA estimates. While, lowest and negative value was observed in case of KN. The cross AP x KN had positive and highest value of SCA as well as reciprocal effects in case of male, female and combined sex at all the age of measurements.