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
Molecular Characterization and Cross-Pathogenicity Assessment of Black Rot (Xanthomonas campestris pv. campestris) Strains in cabbage, broccoli, radish, mustard, cauliflower and Knolkhol from Meghalaya
The present study aimed to isolate and characterize the black rot pathogen, Xanthomonas campestris pv. campestris (Xcc), from cabbage, broccoli, radish, mustard, cauliflower and Knolkhol in the EKH district of Meghalaya, India. A total of 20 isolates were obtained, and 16 of these were confirmed to be pathogenic based on the development of characteristic "V-shaped" lesions. From these 16 isolates, 6 were selected from each crucifers’ strains for further biochemical and molecular studies. Microscopic and cultural studies revealed that all 6 isolates were gram-negative, rod-shaped bacteria with circular colonies. However, variations in texture, margin, consistency, color, and growth pattern were observed among the isolates. For instance, isolate XC CAB4 exhibited a smooth texture, lobate margin, slimy consistency, and pale-yellow color, while isolate XC CALI1 had a less smooth texture, an entire margin, a more slimy and less glistening consistency, and a deep yellow color. Biochemical tests showed that all 6 isolates were positive for H2S production, starch hydrolysis, gelatin liquefaction, and ammonia production, but negative for indole production, casein hydrolysis, Voge's Proskauer test, and methyl red test. The isolates were further confirmed as Xcc by amplifying the hrp F gene using specific primers, and a phylogenetic tree was constructed to compare the isolates with other representative strains. Cross-pathogenicity and aggressiveness assays revealed that all 6 isolates were capable of infecting different cruciferous crops, with varying infection rates and progression of black rot disease. The area under the disease progress curve (AUDPC) was calculated for each isolate, with XC BRO1, XC CALI1, and XC MSD2 showing higher AUDPC values, indicating greater aggressiveness in causing black rot disease on cabbage leaves compared to XC CAB4, XC RAD2, and XC KNKH1.These findings enhance our comprehension of the virulence of various Xcc isolates from cruciferous crops in Meghalaya. This understanding can aid in screening and developing cruciferous cultivars that are resistant to Xcc, predicting disease outbreaks, and evaluating the risk of crop damage. It also aids in the development of effective strategies for managing black rot disease in cruciferous crops.
Effect of sink modification within a capitulum on seed quality of marigold
In India, marigold (Tagetes spp.) stands out as a prominent flower crop, widely cultivated for various purposes such as loose flowers, cut flowers and pot plants. However, the inconsistent seed development in the central portion of the capitulum can lead to poor seed quality. To address this issue, a study was conducted on three marigold varieties (Pusa Deep, Dainty Marietta, and Pusa Bahar) during both rainy and winter seasons in Delhi. The research aimed to understand the impact of sink modification within the capitulum on seed quality parameters. Three distinct treatments were implemented for sink modification: removing outer and middle whorls (T1), maintaining a single flower per branch (T2), and a combination of maintaining a single flower per branch while removing outer and middle whorls (T3). The study extensively examined seed quality parameters, encompassing seed germination, seedling length, seedling dry weight, vigour indices, seed characters, and biochemical traits. Results revealed that sink modification, specifically in T3, significantly enhanced seed quality. T3 exhibited superior characteristics, including higher germination (48.3%), increased seedling length (9.6cm), greater seedling dry weight (12.0mg), and higher vigour index-II (582.8). Remarkably, T3 recorded maximum values for the 1000-seed weight (1.5g), area size (11.5mm2), seed length (12.8mm) and perimeter length (28.1mm). Also, T3 had higher total soluble content (23.63mg/gm FW) and sucrose synthase activity (1684.81μg/min/gm FW). This study underscores the significance of sink modification in enhancing marigold seed quality, revealing that competition for food reserves significantly influences variations in seed quality among different floret positions.
Effect of different N P K levels on growth, yield attributes, yield and quality of Indian mustard (Brassica juncea L.) Under Grid Zone of M P(India)
A field experiment was conducted during rabi season 2014-15,2015-16 and 2016-17 at the RVSKVV- Zonal Agricultural Research Station Morena. To study the effect of different fertility levels on growth, yield attributes, yield and quality of Indian mustard (Brassica juncea L.). Treatment consisted of three levels of nitrogen (80, 100 and 120 kg ha-1), two levels of phosphorus (20 and 40 kg ha-1) and two levels of potassium (0 and 30 kg ha-1) were evaluated in three replication with randomized block design. Application of 120 kg N + 40 kg P2O5 + 30 kg K2 O ha-1 produced significantly higher seed yield (3342 kg ha-1) and other growth and yield attributes viz. secondary branches/plant (14.4), siliquae/plant (462.6), seeds/siliqua (15.33), length of siliqua (5.78 cm), Seed weight /plant (39.90g),1000-seed weight (6.85 g), oil yield (13.44 kg ha-1) as compared to application of 80 kg N + 20 kg P2 O5 + 0 kg K2Oha-1. Net return and B:C Ratio was also recorded higher with application of 120 kg N ha-1 and it was gained Rs. 14141 ha-1and Rs. 7523 ha-1higher net returns over application of 80 kg and 100 kg N ha-1Hence, the farmers could economically benefited by using Indian mustard cultivar RH-749 with recommended doses of fertilizers.
Impact of COVID-19 on Food Security: Insights from Rural-Urban Fringe of Bangalore, India
This study examined the impact of COVID-19 on food security across the rural-urban interface of Bangalore. The primary data for the study was collected from 482 households through telephonic survey. The Household Food Insecurity Access Scale (HFIAS) approach was used to estimate the prevalence of food insecurity. The study found that during the COVID-19 pandemic, more than 70 per cent of the households were food secure across rural, transition, and urban gradients of the north and south transect of Bangalore, while the percentage of food insecurity ranges from 7 to 30 per cent. Variables associated with food security status in the rural-urban interface of Bangalore were analyzed using multinomial logistic regression. The results revealed that COVID-19 had positive influence on food insecurity status. The adverse effect of COVID-19 pandemic contributed to a rise in food insecurity, low dietary consumption, and malnutrition. Thus, study highlighted the need for further investment in targeted social protection strategies and safety nets as part of multi-sectoral solutions to improve household food security during such pandemic periods.
Diversity among rough lemon of Assam in accordance with tree and leaf characters
Rough lemon is considered as the third most important citrus species of North Eastern Region of India. This rank is addressed to it not only because of its importance as a potent rootsock but also because of its nutritious, delicious and aromatic fruits. But due to highly cross pollinated nature of citrus, there is a wide variability of the species visible in the region. This variation is mainly recognised after the bearing of fruits. However, the leaf and tree characters can also be considered for identification and grouping of jambhiri species of different types. In this paper, clustering of collections was done based on leaf and tree characters. Locational diversity of rough lemon can also be observed and effect of location is also found profound from this study.