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.
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:Azerbaijan Medical Journal Gongcheng Kexue Yu Jishu/Advanced Engineering Science Zhonghua er bi yan hou tou jing wai ke za zhi = Chinese journal of otorhinolaryngology head and neck surgery Interventional Pulmonology
Indian economy is an emerging economy, but it is still an agricultural economy because here, most people earn their livelihood from agriculture. The present study for temporal changes in Rajasthan time series, data on area, production and yield per hectare of food grain crops were collected from 1976-77 to 2018-19. Rajasthan state as a whole was selected for the study. The time-series data were collected on area, production, and yield of selected seven Rajasthan crops from the Directorate of Economics and Statistics (DES), Directorate of Agriculture (DOA) and Rajasthan State Agriculture Department. The crops included were wheat, barley, maize, bajra, gram, moong and urad. The area under selected crops in Rajasthan changed remarkably from 1976-77 to 2018-19. The area under barley was reduced, which was shifted towards pulses, oilseeds and cereal crops like moong, urad, soybean, rapeseed & mustard and wheat. The area under wheat, maize, bajra moong and urad had increased during the study period. During the study period, the average total production and yield increased to unprecedented levels in all the selected crops. The area under gram and barley reduced during the study period. Therefore, technological support through varietal improvement and extension support is required.
A field experimentation was undertaken during kharif 2019 at Instructional Farm of Agronomy, Rajasthan College of Agriculture, Udaipur to study the influence of weed management and phosphorus fertilization on nutrient content, uptake and biochemical parameters of cowpea (Vigna unguiculata (L.) Walp.). Outcome of this research revealed that maximum chlorophyll content, seed protein content, nitrogen and phosphorus content of seed and haulm and their uptake by seed, haulm and total uptake by cowpea crop were recorded with pre-emergence application of pendimethalin 750 g ha-1 in combination with imazethapyr + imazamox 33.75 g ha-1 as post-emergence at 15-20 DAS next to weed free treatment. Whereas, application of phosphorus at various doses influenced chlorophyll content, seed protein content, nitrogen and phosphorus content of seed and haulm and their uptake by seed, haulm and total uptake by cowpea crop significantly.
An experiment was carried out during kharif and rabi seasons of 2019-20 and 2020-21 at ARI, Rajendranagar, Hyderabad. The experiment was laid out in randomized block design (Factorial) with two factors i.e., one with six levels of sequential intercropping systems of pigeonpea (S1 to S6) and other with two levels of nutrient management practices (N1 – Recommended dose of fertilizers and N2 - an integrated approach). A separate sole cropped treatment of chickpea (S) was sown under both the nutrient management practices to compare the chickpea under sequential intercropping systems and sole cropping. For chickpea, only 75 per cent of recommended dose of nitrogen was applied to the both the nutrient management practices. Initial and final plant population recorded higher when chickpea sown as sole (S). Sole planting of chickpea (S) and integrated nutrient management (N2) recorded higher plant height, leaf area, dry matter production plant-1, number of pods plant-1, seed yield, stalk yield and N, P, K uptake than chickpea in sequential intercropping systems (S3 and S5) during both the years. Similarly, when we compare the chickpea in sequential intercropping systems (S3 and S5), these parameters recorded higher when chickpea sown in S5 than S3. Test weight, number of seeds pod-1 and harvest index were not influenced by the either sequential intercropping system nor integrated nutrient management. From the above studies, it can be concluded that when chickpea sown as sequential intercrop with paired row system of pigeonpea resulted the higher growth, yield and nutrient uptake of chickpea than chickpea in sequential intercropped with normal spaced pigeonpea.
Agricultural non-point source pollution has the characteristics of complex occurrence mechanism and wide space-time range. The randomness of the time and place, occurrence of intermittent mode, uncertainty of emission form and way have increased the difficulty of agricultural non-point source pollution prevention and control. Based on the analysis of three stages of agricultural non-point source pollution prevention and control, the characteristics of the renewable energy technology and its specific methods of fusion technique combined with agricultural non-point source pollution prevention and control system were described in detail in this paper. Meanwhile, the scarcities of renewable energy technology applied in agriculture non-point source pollution prevention and control were pointed out and the important role of the renewable energy technology in agriculture non-point source pollution prevention and control were emphasized. According to this, this paper aimed at the deficiency of biogas technology and monitoring methods, two kinds of specific solutions were proposed and the advantages and disadvantages of two kinds of schemes were analyzed, respectively. The research work in this paper is of great guidance for the renewable energy technology applied in future agricultural non-point source pollution.
In order to solve the technical problems of high rate of breaking and un-threshing in the threshing process of cabbage seeds, based on the conventional spike teeth- grid concave threshing unit, a low damage threshing unit with the combination of flexible spike teeth with round heads and a concave with circular tubes was designed. In this study, Hertz contact and collision theory was used to analyze and determine the structural parameters of the new threshing unit. The interaction force of different threshing elements, concave and materials were analyzed by using discrete element method. The feasibility of the flexible threshing unit was verified by the comparison test of the distribution of threshed mixture. Finally, in the orthogonal experiment, the rotating speed of the cylinder, the concave clearance and the feeding rate were taken as the experimental factors, and the breaking rate and the un-threshing rate of the Chinese cabbage seeds were taken as the experimental indexes, the optimal working parameter combination of the threshing unit was obtained by using the weight matrix method. Under the condition the rotating speed of the threshing cylinder 750 rpm, the concave clearance 20 mm, and the feeding rate 1.4 kg/s, the threshing performance of the flexible threshing unit was the best. At this time, the breaking rate was 0.064%, and the un-threshing rate was 0.67%, which both met the relevant industry standards.