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
Constraints Faced by Dairy Farmers in Haryana
Dairy production is the robust tool for the rural India to advance their financial as well as social status. The current study was conducted in the dry region and wet region of Haryana, were denoted as Zone-I and Zone-II respectively in this study. Zone-I includes the districts of Kaithal and Karnal. Zone-II comprises of Sirsa and Hisar districts to analyze the constraints faced by the dairy farmers in Haryana state. The present study was carried out by personally interviewing 200 dairy farmers, by adopting multi stage stratified random sampling technique taken on five-point Likert scale, IBM SPSS- 22 software was used for analysing the data by mean score percent. The findings of this study indicated that the major constraints faced by dairy farmers were production constraints, marketing constraints, financial constraints and other constraints like unavailability of skilled labor etc. With respect to production constraints, respondents perceived high cost of compound feed (57 %), lack of specialized dairy training (56.5%) and lack of knowledge about common contagious disease and their control measures (51.5%) as the most important constraint. With regard to financial constraints, the respondents reported that the high rate of interest (53%) was the most critical constraint followed by lengthy procedure for getting loan (63%) and inadequate land availability for fodder cultivation (30%). Poor marketing facilities (49%), lack of transportation facilities (32.5%), late payments received by producers (31.5%) and less remunerative prices of milk (20.5%) were the top 4 constraints under marketing constraints. With regard to other constraints, unavailability of skilled labor (53%) considered as the most important constraint by the farmers. The study revealed that among all the constraints, financial constraints is one of most important constraints and need to be focused more as majority of the respondents were facing problem regarding high rate of interest on dairy loans, dairy farming requires high initial investment hence dairy farmers needs credits. New policies should be framed for credit availability in dairy sector, followed by unavailability of skilled labor, production constraints and marketing constraints. The study suggested that trainings and awareness programs may be formulated frequently to the dairy farmers in the area with which they are more concerned.
Design of air-assisted side-deep fertilization control system based on parameter optimization
The traditional air-assisted side-deep fertilization device has some problems, such as inaccurate parameters of control system and poor precision of variable fertilization. It seriously affects the application and popularization of the device. Aiming at the above problems, this paper want to realize the precise control of air-assisted side-deep fertilization device. This paper constructs an electronically controlled fertilization system based on PID controller. The system model is built in MATLAB, and the transfer function of control system is deduced too. In order to improve the accuracy of control system parameters, the system parameters were optimized based on particle swarm optimization algorithm and control system tuner toolbox. The optimized system parameters of Kp, Ki, and Kd were set 3.05, 10 and 0.32, respectively. The experimental platform of variable fertilization was built according to the system parameters, and the mathematical model of variable fertilization was calibrated. The mathematical model’s R2 was 0.99. The optimized system parameters were imported into the controller, and the controller converted specified fertilizer quality to rotary speed of stepping motor. The driver ordered stepping motor to drive fertilizer discharge shaft at the set rotary speed by the controller. The experimental results showed that the maximum deviation of fertilization rate was 10.76g, which could better meet the requirements of precision fertilization. This research can improve the evenness and accuracy of the application of electric control fertilization.
Bioethanol Production From Lignocellulosic Biomass Through Syngas Fermentation Using Saccharomyces cerevisiae
Extinction of fossil fuel and thriving energy consumption pave the way for development of sustainable bioethanol as a top-tier biofuel. Bioethanol can be used in pure form or added to gasoline as gasohol and can be used as octane enhancer in other transportation fuel. Our study highlighted bioethanol production from lignocellulosic biomass through syngas fermentation conducted in a bioreactor. The conventional yeast Saccharomyces cerevisiae used in the bioprocess technology depicted 8% tolerance towards ethanol and produced 1.40% of bioethanol through syngas (60% CO+ 20% CO2+ 25% H2+ 5% CH4) fermentation at 37oC in 15 days. Bioethanol quantification was established by GC analysis. Further, optimization of different bio-parameters for enhanced bioethanol production is highly essential to scale-up the process, which may reduce the dependency on fossil fuel by contributing a green and sustainable energy.
First Report of Powdery Mildew caused by Podosphaera xanthii on Tarlmounia elliptica in Pakistan
During March-April 2019, Powdery mildew symptoms were observed on both surfaces of the leaves of Tarlmounia elliptica at several sites in Lahore, Pakistan. The causal agent was identified as Podosphaera xanthii based on morphology and its identity was confirmed by molecular data. This is the first report of Podosphaera xanthii on Tarlmounia elliptica for Pakistan.
Hand held singulated pneumatic seeder for customized spaced mat nursery to achieve single seedling rice transplanter
SRI (System of Rice Intensification) transplanter requirement is to pick and place single seedlings, it was planned to grow the seedlings themselves in a grid like sparse pattern on a typical transplanter’s tray nursery. In spaced rice mat nursery, single seed was to be sown in each grid. For transplanting one hectare at spacing of 240 × 240 mm, 345 nursery trays are required and it is highly tedious to sowmanually. For developing pneumatic seeding, the physical properties of rice varieties used in Southern India are ASD 18, ASD 16, ADT 36, ADT 43 and KDML 105 were studied. Based on these results, the pneumatic seeding device was constructed with a hollow picker box of 456 × 244 × 42 mm and its bottom surface with a grid of equispaced picker holes of 0.7 mm at spacing of 15.7 × 12 mm that correspond to picking and placing singulated seeds on the mat surface at a single stroke.An experiment was done at all eight suction pressure levels (0.66, 0.8, 1.06, 1.27, 1.6, 1.87, 3.46 and 4.27 kPa), and on three varieties of seeds namely ADT 43 (medium slender), ASD 16(short bold) and KDML (long slender). A multinomial regression was tried on the observed data of the number of seeds picked by each picker hole of the developed picker device and the modelling provided an opportunity to fix the suction level required for maximum singulation of selected varieties as 1.87 kPa, rendering 70 to 80% singulation.