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)
27 Nov 2025 (Vol - 56 , Issue- 11 )
30 Nov 2025 (Vol - 56 , Issue 11 )
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
Yield Potential and Economic Feasibility of Wheat Varieties under Integrated Nutrient Management in Semi-Arid Region of India
A field experiment was conducted during two consecutive winter (rabi) seasons of 2016-17 and 2017-18 at Sardar krushinagar Dantiwada Agricultural University, Sardar krushinagar, Gujarat, India to assess the impact of varieties and integrated nutrient management practices on yield and economics of wheat. The treatments consisted of four wheat varieties viz. GW 273, GW 322, GW 451 and GW 496 and six integrated nutrient management practices viz. control, 100% RDF, 100% RDF + Azotobacter + PSB, 75% RDF + Azotobacter + PSB, 75% RDF + Azotobacter + PSB + ZnSO4 and 50% RDF + 25% N through FYM + Azotobacter + PSB + ZnSO4. Results indicated that maximum values of growth and yield parameters were recorded in variety GW 451 which was at par with GW 496. This variety proved as best in realizing the highest grain yield (4.99 t ha-1), net returns (₹ 68173 ha1 and benefit cost ratio (2.0). Among nutrient management practices, application of100% RDF (120 kg N and 60 kg P2O5 per ha) + Azotobacter + PSB significantly improved growth and yield attributes and produced 37.1 and 24.8% higher grain and straw yields over control, respectively. The highest economic returns and B:C ratio were also computed in this treatment. Therefore, wheat variety GW 451 fertilized with 100% RDF + Azotobacter + PSB can be suggested for higher grain and straw productivity and profitability.
Development of a control strategy for aeration systems of stored grains
A new grain aeration control strategy has been developed. This strategy is based on a simulation of the aeration process and acquisition data in real- time. This strategy was implemented using a simulation model coupled with intrinsic and extrinsic silo acquisitions. The decisions to activate and deactivate the aeration process depend on four conditions on the state of grain layers in real-time and simulation of the aeration process. This strategy has shown its significant safe storage potential. Indeed, for three test periods (P1, P2, and P3). The period P1 makes it possible to have an average temperature of stock of 15 0C in response to the said strategy in the critical summer period (P2), it has been noted that it does not have considerable cooling power. However, we have noticed the homogeneity of temperature distributions in grains. Additionally, for period P3 the average temperature reached there in the silo is around 25 0C during August (the period P3) which is considered beneficial for the new harvest.
Studies on grain detachment force as affected by grain position and moisture content
Threshing force is the force required to detach the grains from the bundle of panicles during a threshing operation. For successful design of any threshing equipment, the knowledge of grain detachment force is essential. Therefore, this study was undertaken to determine the grain detachment force of paddy. The grain detachment force of six varieties of paddy, i.e., Lalat, Pratibha, Birupa, Pratikshya, Sidhanta, and Hasanta was determined using Universal Testing Machine. The grain detachment force of single grain was measured at three positions, i.e., lower, middle, and upper of panicles for each selected variety at four grain moisture content at 100 mm per min of test speed. The grain detachment force for the whole panicle of each variety was also determined at four speed (50, 100, 150 and 200 mm per min) and at four levels of moisture content. The highest grain detachment force was observed at the lower portion and the lowest at the upper portion of panicles for all the selected paddy varieties at all levels of grain moisture content. The detachment force decreased with decrease in grain moisture content for all the varieties. Grain detachment force decreased as the test speed increased from 50 to 150 mm/min but increased at 200 mm/min for all the varieties. The maximum detachment force was observed at the lower position of panicle at 17.8% moisture content for Sidhanta variety.
Influence of Design Parameters on Optimal Partial Transmission Ratios of a Helical Worm Gearbox
In this study, the main concern is estimating the effect of main design parameters on the optimal gear ratio (u2) of a helical worm gearbox. To solve that, a simulation experiment was designed and implemented by a cost optimization program. From the experimental results, the influence of the main design parameters and their interactions on the response u2 was evaluated. In addition, a useful regression model to calculate the optimum gear ratio was proposed based on the experiment data. It was reported that the regression formula is very fit with experimental data, and its use is easy because it is given in the form of an explicit function.
Effect of different varieties and fertility levels on growth, yield, Quality and nutrient uptake of hybrid rice cultivars (Oryza sativa) under subtropical irrigated conditions.
A field experiment was conducted during kharif season of 2014 at Sher-e- Kashmir University of Agricultural Sciences and Technology, research farm of division of agronomy Jammu to study the effect of different varieties and fertility levels on growth, yield, quality and nutrient uptake of hybrid rice cultivars under sub-tropical irrigated conditions. The experiment was laid out in Factorial Randomized Block Design with 16 treatments combinations and three replications. The treatments consisted of four varieties varieties V1 (PRH-10), V2 (DRRH-3), V3 (Indra Sona) and V4 (PHB-71) as one factor and four fertility levels F1 (N60:P30:K15 kg/ha); F2 (N90:P45:K23 kg/ha); F3 (N120:P60:K30 kg/ha) and F4 (N150:P75:K38 kg/ha) as second factor. Among hybrids, PHB-71 recorded significantly higher plant height, dry matter accumulation, number of panicles/m2, number of grains/panicle, 1000-grain weight, grain yield and straw yield. Application of N120:P60:K30 kg/ha and N150:P75:K38 kg/ha produced significantly higher plant height, dry matter accumulation, number of panicles/m2, number of grains/panicle, 1000-grain weight, grain yield and straw yield than N60:P30:K15 kg/ha and N90P45K23 kg/ha. The variety DRRH-3 recorded significantly higher protein content (8.57%) followed by PHB-71 and (PRH-10). However, being non-significant the variety DRRH-3 and fertility level F3 (N120P60K30 kg/ha) recorded highest starch content of (72.26%) and (72.76%) respectively. The variety PHB-71 has significantly higher nutrient uptake both in grain and straw followed by the variety DRRH-3, Indra Sona and PRH-10. The increase in nutrient uptake with F3 (N120P60K30 kg/ha) and F4 (N150P75K38 kg/ha) levels found to be superior over F1 (N60P30K15 kg/ha) and F2 (N90P45K23 kg/ha). The highest net returns (Rs 83514) and benefit: cost ratio (2.59) was recorded with PHB-71 followed by DRRH-3 (2.19). However, the highest net returns (Rs 78379) was obtained with N150P75K38 kg/ha followed by N120P60K30 kg/ha level whereas the B:C ratio (2.36) was higher in N120P60K30 kg/ha.