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
Effect of different seed extraction methods on physical and physiological quality of teak (Tectona grandis L.F) drupes
Teak has one of the most valuable timber in the world. It is native to India and the Southeast Asian region (Myanmar, Thailand, and Laos), where it is a major supply of wood. It is widely spread in tropical and subtropical regions of the world. It is mostly propagated through seeds. One of the main limitations of teak is delayed and sporadic germination due to dormancy. It exhibits physical dormancy due to presence of hard and stony endocarp in the drupe. To overcome the problem, true seeds that are available in the drupe need to be extracted and used for seedling production without any problem of dormancy. But extraction of true seed from the teak drupe is not an easy process and it demands more mechanical power. In order to address this issue, an experiment was conducted in view of developing a device to extract true seed from drupes without causing any mechanical damage to the true seed. Extracted true seeds were subjected to physical, physiological and chemical methods to observe the mechanical damage and germination test. It is concluded that among the four methods of extraction, power operated hammer mill with a pulley size of 3 inch with dry drupes recorded highest number of true seeds extraction when compared to all other methods. True seeds extracted by power operated hammer mill recorded higher germination of 48.0 and 51.0 % on 14 and 28 days after sowing with lesser mechanical damage.
Population fluctuation of Earias spp. (Fab.) on ‘okra’ in relation to abiotic factors
Okra shoot and fruit borer, Earias spp. is the major pest of okra. It is important to understand to what extent, this pest causes damage in okra field, and how do they respond to the prevailing environmental conditions. We studied extent of damage by Earias spp., and its correlation with abiotic factors. The study was done at Department of Entomology, CCS Haryana Agricultural University, Hisar, Haryana, during kharif season, 2019. The study was carried out from August, 2019 (32nd standard meteorological week) to October 2019 (42nd standard meteorological week). The initiation of larval population was found to be from 32nd SMW, while it reached at its peak (8.67 larvae/ 5 plants) during 39th SMW. Infestation of fruits initiated from 34th SMW (0.48%), and increased gradually till 40th SMW (39.41%). Temperature was recorded to be the major factor affecting the population of this pest. Larval population showed a significant and negative correlation with the maximum (r= -0.568*), minimum (r= -0.643*) and average (r=-0.664*) temperature, along with evening relative humidity (r= -0.590*) and rainfall (r= -0.590*). This study provides basic knowledge about the incidence and damage caused by this pest, and its behaviour towards various abiotic factors.
Benefits Perceived by the Students regarding E-learning during COVID-19 Pandemic
Many countries ordered closure of all educational institutes due to COVID-19. A sample of 300 students was selected from all the 6 constituent colleges of Maharana Pratap University of Agriculture and Technology, Udaipur, Rajasthan. Students from 2nd and 3rd year were selected from which 50 students was selected randomly from each college to assess the benefits perceived by the students regarding e-learning platforms during COVID-19. Data collection was done through “Google Forms” which was sent on Whatsapp and e- mail. Frequency, percentage and mean per cent score were used for analysing the data statistically. On the basis of the data obtained it can be concluded that a flexible schedule and convenience (MPS 81.88) was found to be the major benefits perceived by the respondents in the e-learning followed by favourable for people with restricted mobility (MPS 81.11) and it also helps in an easy and quick share of educational material. A number of the respondents also believed that e-learning is helpful in saving time and money and in increasing general awareness of the respondents.
Visual perception, comprehension and gain in knowledge of Video Programme on Management of Organic Farming for Rural Women
The study was conducted in randomly selected two villages of (Palana and Barsinghsar) of Bikaner Panchayat samiti with a sample of 60 rural women (30 from each village). Pre and Post- test experimental research design was used for the present study. To find out the visual perception and comprehension unstructured open ended questions were framed. Pre-test was done by the help of developed knowledge test with the rural women, to know the existing knowledge on organic farming and after this developed video programme was exposed to the rural women. Post-test was carried out to find out the gain in knowledge. Regarding visual perception and comprehension findings indicate that majority of respondents have perceived and comprehended the messages of video programme very well. Significant improvement in the knowledge of respondents was found as a result of exposure of video programme with the increased in mean percent score is from 22 to 62.90 per cent with the gain in knowledge of about 40.90 per cent. On the basis of these findings, it is concluded that the developed video programme on "Management of organic farming" was good and is useful for field functionaries, extension workers, and all those agencies / organization working in rural areas for transfer of scientific information to rural women.
A New Variable Selection Method for Near Infrared Spectral Analysis Based on Three-step Hybrid Strategy
A specific variable selection method was proposed based on three-step hybrid strategy for near infrared spectral analysis. By analyzing functions of each step and characteristics of various variable selection methods, synergy interval partial least squares, iterative variable subset optimization and bootstrapping soft shrinkage were chosen for three steps. To test effect of the three-step hybrid method, it was applied into corn and soil spectral data and compared to other common methods. Results showed that three-step hybrid variable selection method selected 1% variables of full spectrum, calibration determination coefficient and prediction determination coefficient reached 0.9976 and 0.9932. It could effectively extract variables related to tested substance and provide a new variable selection method for near infrared spectral analysis.