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)
07 Dec 2025 (Vol - 56 , Issue- 12 )
31 Dec 2025 (Vol - 56 , Issue 12 )
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
Temporal Variations in Nutrient Content of Grape Petioles and Berries during the Growing Season: Insights into Macronutrients and Micronutrients Source to Sink Dynamics.
This study investigated the variation in nutrient content in grape petioles and berries throughout the growing season. The results showed that the mean nitrogen (N) content in petioles ranged from 0.67% to 1.37% and exhibited a decline over the sampling period. Anab-e-Shahi cultivar had higher N levels compared to Perlette. Petiole N showed a positive correlation with phosphorus (P) and potassium (K). Similar periodic fluctuations in petiole N content were observed in other grape cultivars. The mean P content varied from 0.12% to 0.34% and showed a non-significant decrease during early growth stages and a subsequent increase. Petiole P exhibited positive correlations with K and N. The K content increased initially and then decreased throughout the season, with Perlette having higher levels than Anab-e-Shahi. Petiole K showed positive correlations with N and P. The calcium (Ca) content increased gradually, while magnesium (Mg) showed an overall increase from D1 to D9. Boron (B) increased initially and then decreased towards the end of the season. While comparing nutrient status in both leaves and fruits from D6 to D8 macronutrients show maximum flow from source to sink. In case of Nitrogen D6 showed maximum decrease in N in leaves and increase in fruits which means maximum source to sink is in D6 and majority of macro nutrients show similar behavior, while as in case of micronutrients initial stages D5 onwards source to sink gets decreased hence micronutrient sprays should be recommended at initial stages hence nutrient sprays are recommended during these stages for maximum uptake of nutrients from leaves to berries for maximum nutrient fortification in berries. These findings emphasize the importance of considering specific reference levels for each phenological stage and highlight the dynamic nature of nutrient content in grapevine growth and development.
Development and Validation of a Specific PCR Protocol for Detecting Bacterial leaf Spot Xanthomonads in Tomato and Pepper.
Advancements in molecular technology have revolutionized the detection of phytopathogenic bacteria, with specific amplification of target DNA fragments emerging as a powerful approach, especially for quarantine bacteria. Current conventional PCR protocols for Bacterial Leaf Spot (BLS) xanthomonads primarily focus on species differentiation or the detection of specific species, lacking a comprehensive and validated method for all BLS xanthomonad lineages. The conventional PCR protocol optimized with designed newly primer pair Bs LepA F/ Bs LepA F followed by validation for specificity and sensitivity assays conducted in this study. The protocol was validated using target BLS Xanthomonas strains from major tomato-growing regions in India and non-target bacterial strains belongs to different genus. The detection assays from pure bacterial suspension and threshold detection efficiency from artificially infected leaf samples demonstrating high specificity and sensitivity. Furthermore, the protocol's effectiveness to detect naturally infected plant samples and multiplex with other tomato bacterial pathogens make it a significant tool for agricultural disease control. This research advances molecular detection techniques and provides practical solutions for early identification and management of BLS xanthomonads, protecting tomato and pepper crops from this destructive disease.
Exploring Genetic Influences on Seed Morphological Traits in Wheat: A Genome-Wide Association Study under Moisture Deficit Stress and Well-Watered Conditions
Moisture deficit stress is a major environmental factor affecting crop productivity, including wheat, one of the world's most vital staple crops. Understanding the genetic basis of seed morphological traits under moisture deficit stress condition is essential for developing climate-resilient wheat cultivars. We used 193 wheat genotypic panel and 35,143 genetic markers to assess seven seed morphological traits, including area size, perimeter length, seed length, seed width, circularity of seed, length-to-width ratio and the distance between the intersection of length and width of seed and the centre of gravity. We also measured the thousand seed weight as a quality trait. Our findings revealed 37 associations between markers and these seed traits across 18 chromosomes. Remarkably 26 of these associations explained the 10% of the phenotypic variation in the traits under moisture stress conditions. These marker-trait associations reveal genes responsive to moisture deficit stress, offering promise for developing climate-resilient wheat varieties. The genomic regions linked to these traits could be utilized for marker-assisted selection, ultimately boosting wheat productivity in challenging climates.
THE IMPACT OF Gender, Age AND Reproductive STAGES ON CERTAIN LIVER PARAMETERS ON CLINICALLY HEALTHY Local Crossbreed Sheep IN TIARET Province, ALGERIA.
This study aimed to evaluate the effects of age, gender and physiological state on liver parameters. 218 samples of clinical healthy crossbreed sheep raised at Haidar farm of Ain Gasma, Tiaret province, used to measure the plasma activities of alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyl transferase (GGT), alkaline phosphatase (ALP) total bilirubin (TBIL), direct bilirubin (DBIL), albumin (ALB), total protein (TP). The research highlights the significant impact of age on all the parameters, but no significant difference in terms of blood GGT, ALB and TBIL levels among male groups was noticed, while gender was considered as secondary factor influencing blood ALP, ALT, TP, DBIL and TBIL levels. In addition, the physiological stage has an impact on GGT and ALB parameters, In conclusion, to interprate the Hepatic metabolism, we need to take into consisderation, the physiological status, the gender and the age of the sheep.
Effect of Secondary Host on Santalum Album L. (Indian Sandalwood) Heartwood and Oil Content in Northern Transitional Agroclimatic Zone of Karnataka in Peninsular India
A Study conducted from 2018 to 2021 at the College of Forestry in Sirsi focused on the sandalwood tree (Santalum album L.) within Agroforestry systems in Karnataka. The primary objectives were to assess the impact of secondary host plants on heartwood development and to measure the oil content of sandalwood trees across various agroforestry systems in Karnataka's Belagavi district. The clear bole height of sandalwood trees exhibited a significant 26.82% increase when paired with Emblica officinalis, surpassing other host trees, including Grevillea robusta (14.28%), after eight years of plantation. In terms of heartwood content, the greatest enhancement, at 59.57%, occurred in sandalwood trees associated with Casuarina equisetifolia, followed by Sesbania grandiflora at 50.35% as host trees. Regarding oil content, there was a substantial 73.49% increase in sandalwood trees hosted by Casuarina equisetifolia, with Sesbania grandiflora showing a notable 65.07% increase. Significantly higher oil content was observed with Casuarina equisetifolia (0.83%), similar to Sesbania grandiflora (0.63%), and ahead of Cocus nucifera (0.57%).