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 (2026)
07 May 2026 (Vol - 57 , Issue- 05 )
31 May 2026 (Vol - 57 , Issue 05 )
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
Comparative Feeding Biology of the Minor Carp Labeo gonius (Hamilton, 1822) from the Burhi Gandak River and Birauli Oxbow Lake, India
The present study investigated the feeding biology of the minor carp Labeo gonius collected from two different freshwater ecosystem the Burhi Gandak River and Birauli Oxbow Lake in North Bihar, India. From August 2022 to July 2023, a total of 120 specimens were collected by monthly sampling to use gut content analysis, Relative Gut Length (RGL) and Gastro-somatic Index (GaSI) to assess dietary composition, feeding intensity and trophic characteristics. Sand and mud made up the majority of L. gonius diet (48.82% in Burhi Gandak River and 38.14% in Birauli Oxbow Lake), followed by diatoms (18.27% and 22.36%), decayed organic matter (15.96% and 20.95%), green algae (8.81% and 6.50%), macrophytes (5.06% and 9.09%), and blue-green algae (3.06% and 2.83%). The majority of benthic detritus suggests that the species has detritivores bottom-feeding tendencies. GaSI measurements showed seasonal variation in feeding intensity, ranging from 1.5±0.10 to 4.6±0.08 in the Burhi Gandak River and from 1.28±0.07 to 4.89±0.07 in Birauli Oxbow Lake, with greater values in the winter and post-monsoon. An omnivorous to herbivorous feeding behavior was suggested by the RGL values, which varied from 4.7–7.8 in the river and 4.1–6.5 in the oxbow lake. Habitat-based variation in feeding behaviour and food availability is shown by a substantial difference in RGL (P < 0.05) between the two environments. The results show L. gonius ecological adaptability and its critical function in benthic energy transfer in freshwater environments. These findings provide important insights into trophic dynamics and the sustainable management of inland fisheries resources.
Length–weight Relationship and Relative Condition Factor of Cyprinus carpio (Linnaeus, 1758) from Ottu Reservoir, Sirsa, Haryana
The length–weight relationship (LWR) and relative condition factor (Kn) of Cyprinus carpio from the Ottu Reservoir in Sirsa, Haryana, India, were studied in order to assess the species growth pattern and its physiological condition within the reservoir ecosystem. Using various fishing gear, fish samples (n = 260) have been collected from four sampling locations between January 2025 to December 2025. The body weight (g) and total length (cm) have been measured and evaluated using the cube law equation, W=aLb. Both sexes' length and weight were strongly correlated, with high coefficients of determination (R2 = 0.96) in the length-weight relationship. The female C. carpio showed positive allometric growth (b = 3.1605), indicating relatively larger weight gain relative to length, probably related to gonadal development, whereas males showed near-isometric growth (b = 2.9833), indicating proportional rise in weight with length. For both males (1.0055) and females (1.0192), the mean relative condition factor (Kn) was close to unity, reflecting generally good physiological condition and favourable conditions in the reservoir. There were seasonal differences in Kn, with relatively larger values in the spring and summer, possibly as a result of greater food availability and reproductive activity and slightly lower values in autumn and winter. Overall, the results reveal that C. carpio populations in the Ottu Reservoir maintain constant growth and a good condition of health, underscoring the reservoir's suitability and highlighting the significance of continuous monitoring for sustainable fisheries management and conservation.
Tissue-Specific Biochemical Profiling of Glucosinolates, Phenols, and Sugars in Resistant and Susceptible Mustard Genotypes Against Mustard Aphid (Lipaphis erysimi, Hemiptera: Aphididae)
Mustard (Brassica spp.) stands as India's second largest oilseed crop while mustard aphid infestations from Lipaphis erysimi Kalt. result in substantial crop yield losses. The sustainable approach to controlling pests involves the development of plants that are insect-resistant. Mustard secondary metabolites such as glucosinolates, phenols and sugars determine how aphids establish themselves and grow. The research team chose ten genotypes which included five resistant and five susceptible genotypes based on their Mean Aphid Index Value (MAIV) and Mean Aphid Multiplication Index Value (MAMIV). The research team conducted biochemical analyses on seeds, inflorescences, leaves and stems. RP-9 (73.91 μ mole/g dry wt.) seeds contained the most glucosinolate content among genotypes. The study found that MAMIV showed a strong negative correlation with higher glucosinolate content which resulted in lower aphid reproduction. RP-9 (3.04 mg/g dry sample) leaves contained the highest phenol content while MAIV and MAMIV displayed strong negative correlations with phenol levels in seeds and inflorescences. Sugar content was highest in RH-406 (17.95mg/g dry sample) seeds, which displayed a highly significant negative correlation with MAIV. The results demonstrate that plants develop resistance through specific tissue distribution of glucosinolates, phenols and sugars. This research suggests that these compounds can function as biochemical markers that breeders can use to create mustard genotypes that possess sustainable resistance against L. erysimi.
Derivation of soil test based fertilizer recommendation for Safflower (Carthamus tinctorius L.) based on targeted yield concept with INM approach in Vertisol of Chhattisgarh Plain
A field experiment was conducted during Rabi season 2019-2020 and 2020-2021 at Research farm, Indira Gandhi Agricultural University, Raipur (Chhattisgarh) in order to study the soil test based fertilizer recommendation for safflower crop on the basis of grain yield, nutrient uptake, and initial soil test data which were used forgenerating basic parameters, such as nutrient requirement, contribution of nutrients from soil, fertilizer, and organic manure. It was discovered that for a safflower crop to yield one quintal of grain, 3.99 kg of N, 0.94 kilogram of P, and 6.43 kg of K were needed.The fertilizer and soil test efficiencies for N, P, and K were 28.41, 18.33, and 138.70 percent as well as 15.75, 51.59, and 11.13 percent, respectively. For N, P, and K efficiency of FYM was calculated as 10.08, 5.21, and 8.12 percent, respectively. These factors were used to generate STCR based fertilizer prescription equations along with ready reckoners of fertilizer using FYM as the organic component of the INM technique for N, P2O5 and K2O at different soil fertility levels and yield targets of safflower for providing balanced fertilization.
A Review of Physicochemical Characteristics, Crop Suitability, and Productivity Constraints of Major Soil Orders in Chhattisgarh: Implications for Sustainable Soil Health Management
Chhattisgarh, located in the central-eastern part of India, possesses a wide range of agro-climatic conditions and soil types that play a crucial role in determining agricultural productivity. This review presents an overview of the major soil orders found in the state and their implications for crop production. Entisols are generally shallow, coarse-textured, and low in nutrients, making them susceptible to erosion and suitable mainly for limited rainfed cultivation. Inceptisols are moderately developed soils with medium fertility, supporting a range of Kharif and Rabi crops under rainfed conditions. Alfisols are characterized by clay accumulation in the subsoil and moderate fertility, and they can sustain diverse cropping systems when managed properly. Vertisols, which are deep and rich in clay, are among the most productive soils but face challenges such as shrink–swell behavior, poor drainage, and deficiencies of certain micronutrients. To overcome these constraints and maintain long-term productivity, sustainable soil management practices such as integrated nutrient management, use of organic amendments, soil and water conservation measures, and crop diversification are essential. A clear understanding of the characteristics and limitations of these soils is important for developing site-specific management strategies that support sustainable agriculture and improve soil health in Chhattisgarh.