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. 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 Kongzhi yu Juece/Control and Decision Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) Zhonghua yi shi za zhi (Beijing, China : 1980)
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:
In the Indo-Gangetic Plains of South Asia, the predominant cropping system occupies 13.5 million hectares and consists of rice and wheat. Rice cultivation using the traditional puddle transplanted method requires a lot of water, capital, and energy. The structural integrity of the soil will deteriorate as a result of this system. Additionally, wheat yields are affected by aeration stress because of the formation of hard pans during the rice growing season. Growing plants on a mat-type nursery require specific expertise, and learning how to operate a transplanter puts mechanical transplanting in the background as a secondary choice. Sustainable rice production is possible with the use of direct sowing with zero or reduced tillage if the issues of weeds, nutritional deficiencies, worms, and the establishment of an aerobic variety are dealt with. Direct seeding of rice is an option for sustainable rice production. In addition, rice grown via direct seeding results in lower emissions of greenhouse gases. In this article, we examine the efficacy of directly seeding rice in soils with varying textures and a variety of agroclimatic conditions, as well as the primary challenges that this method presents.
Agriculture in Pakistan is vital for the country's economy and food security, employing over 40% of the workforce and contributing significantly to the GDP. Beside major cash crops, different vegetables and fruits including garlic have a potentially high economic value. Across the farming community, garlic is usually split manually using labor force. For planting purpose, graded garlic cloves are required. Therefore, there is a need for a machine which splits and grades the garlic simultaneously. In this study, a garlic splitter cum grader was developed and its performance was evaluated. According to the results, the machine achieved 48 times more garlic splitting compared to manual labor per working day. Additionally, the machine achieved a material capacity of 6 maund/working hour. The machine was tested at different rpm, clearance, feed rate, and bulb size. In addition, two different varieties of garlic namely Chinese and Desi variety were used for the performance evaluation. The machine splits and grades the garlic cloves into three different categories (i.e., small, medium, large). Furthermore, it was observed that the manual labor only provides splitting service whereas the machine provides splitting as well as grading. It was concluded that the machine could potentially save 346 PKR/maund of split garlic.
Thirty F1s were generated using six rice genotypes with different levels of resistance to false smut based on Griffing’s full diallel fashion and evaluated at Hybrid Rice Evaluation Centre, Gudalur (Hotspot location), Tamil Nadu, India to understand the disease reaction, gene action and combining ability for seven disease related and 13 agronomic traits. Highly significant lower mean disease incidence of number of infected grains per panicle was recorded in the parents, RG170 and RG172. Eight and 11 crosses exhibited highly resistant and resistant reaction respectively. GCA variance was numerically higher than the SCA variance for 16 traits and Baker’s ratio revealed strong additive gene action for five traits. Combining ability analysis revealed marked variations of gca and sca effects for most of the studied traits in parents and crosses respectively. Parent RG 170 was inferred as the best general combiner for false smut disease resistance and agronomic traits. The crosses RG170/BPT5204 and RG162/RNR15048 expressed desirable sca effects for most of the resistance traits notably, number of infected plants, number of infected tillers and percentage of infected tillers. Use of one parents with resistance or moderate resistance would provide adequate false smut resistance combined with yield. The crosses identified from the present study viz., RG162/RG170, RG162/BPT5204, RNR15048/RG162, RG22/BPT5204, RG170/RG172 and BPT5204/ RG172 can be further utilized in pedigree breeding by scoring for false smut resistance in each generation and selection for other agronomic traits based on gene action in order to develop recombinants combining yield and false smut resistance in rice.
For the current combine harvester cutting width, feeding capacity and the whole machine quality are gradually increasing, resulting in gearboxes with glued teeth, brake housing rupture and brake pad burning phenomenon due to insufficient load-bearing capacity. In this paper, a crawler combine harvester gearbox is designed. Firstly, the gearbox is modeled by theoretical design calculations and using SolidWorks 3D drawing software. Then using ANSYS software, stress analysis and modal analysis are performed on the driveline to verify the feasibility of the gearbox. Finally, the gearbox is manufactured and installed on the combine harvester chassis. And designing tests to verify the transmission performance and load carrying capacity of the gearbox. The results show that when the combine harvester is fully loaded (7t) at high speed (2m/s) on a wet and soft mud field, the gearbox output half-shaft is subjected to the maximum torque with a peak torque of 2238.5N-m. And when the harvester is fully loaded and steering in the field in second gear (1.5m/s), the peak torque of the gearbox output half-shaft reaches 2760.2N-m, both of which meet the rated torque value of the gearbox. The matching power of the gearbox designed in this paper reaches 85~95kW, which can meet the continuous and stable operation of combine harvester under heavy load. This study provides a method and reference for the design and development of combine harvester gearboxes.
To identify the responses of enzymatic and non-enzymatic antioxidant activities in response to yield the study was undertaken in different Brassica juncea cultivars such as Pusa Bold, RSPR-01, RSPR-03, Kranti and NRCDR-2 under drought stress conditions at 45, 60 and 90 days respectively, days after sowing (DAS). The study was done in the Division of Plant Physiology, Chatha, SKUAST, Jammu during Rabi 2016-17, a pot experiment was conducted with factorial completely randomized design with three replications. Parameter such as relative water content in leaves, relative stress injury, antioxidant enzymatic activity, proline content, number of seeds per pod, number of pods per plant, 100 seed weight and seed yield were also studied. To determine the relative tolerance of genotypes, the drought susceptibility index (DSI) for seed yield and its attributes were recorded. The activities of enzymatic antioxidant such as superoxide dismutase (SOD), peroxidase (POX) and non-enzymatic antioxidant ascorbic acid preferentially enhanced by the drought stress. Relative water content, dry weight decreased, whereas relative stress injury, proline content increases with the increase in the drought stress given at various days after sowing. At flowering stage reduction in seed yield was observed when drought stress imposed and it also affects silique development. It was noticed that reduction in seed weight was minimum when drought stress was induced before flowering. These results indicate that protection from oxidative damage by higher levels of antioxidants may be involved in the development of drought tolerance in Brassica juncea. These biochemical parameters results can be used as practical for selection of drought tolerant brassica juncea genotypes when selecting drought tolerant cultivars for breeding in arid regions.