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
Evolution of Feronia lemonia genotypes for growth, morphological, yield and quality traits under rainfed semi-arid tracts of western India
Wood apple botanically known as Feronia limonia, is important underutilized fruit species. This species have tremendous nutritional and medicinal as well as having huge fruit processing value but it considered as a neglected crop in India. Hence considering its drought hardy nature and climate resilient feature as well as wide adoptability from tropic to subtropics condition the elite germplams are collected from different part of Indian and established as field gene bank in years 2003-04. The evolution of these germplasm under field condition was conducted in years of 2019-20 for their qualitative as well quantatives characters and as well as its nutritional quality of fruits. During this studies also evaluated its suitable flowering and proper maturity indices of fruits. During the whole plant evolution studies among the genotypes, CHESWA-4, CHESWA-6 and CHESWA-10 were found superior in term of yield, quality and nutritional characters. In further observation, it was found that genotypes CHESWA-4 and CHESWA-6 were also found suitable for value addition product like pickles, jam, jelly, fruit powder etc. During the studies it observed that all the genotypes of wood apple exhibited considerable variability for morphological, qualitative and quantative traits.
Diverse inbred lines with better fruit traits improves earliness and yield traits in eggplant (Solanum melongena L.) in Malabar Coast of India
Despite the large variability in brinjal germplasm for several growth, fruit traits, bioactive compounds and mineral nutrients in India, low productivity with late fruit harvesting remains the major hurdle in brinjal cultivation. The best way to utilize the heterosis in crop is to generate F1 hybrids with maximum heterozygosity, which leads to the identification and selection of hybrid vigour. The maximum standard heterosis for yield per plant was observed in the cross L5 × T3 (25.30%, Raidurg Local × Pusa Purple Cluster) followed by L2 × T1 (23.35%, IC-433678 × IC-89986), L2× T3 (23.26 %, IC-433678 × Pusa Purple Cluster), L1 × T3 (9.77%, IC-345271 × Pusa Purple Cluster) and L4 × T3 (7.44%, Tiptur Local × Pusa Purple Cluster). The hybrid L5× T3 (Raidurg Local × Pusa Purple Cluster) also exhibited high significant standard heterosis for long styled flowers (37.16%), number of fruits per plant (26.13%), fruit weight (18.68%) as well as earliness traits like days to first harvest (-16.75%) and days to last harvest (-26.87%). The hybrid L2 × T3 (IC-433678 × Pusa Purple Cluster) showed significant standard heterosis for days to first flower (-9.15%), long styled flowers (31.04%), number of length of fruit (18.57%) and fruits per plant (4.21%). Therefore, these hybrids could be identified and released for multilocational trials to the growers to fetch early price and higher yield in brinjal with consumer specific preferences.
Pathogenic variability and infection stategy of Exserhilum turcicum of maize in Meghalaya
Northern leaf blight is a lethal foliar disease of maize caused by the fungus Exserohilum turcicum. The aim of this study was to elucidate the pathogenic variability and Severity assessment of the fungus in maize. For pathogenic variability, spore suspensions of fourteen E. turcicum isolates of Meghalaya were inoculated in maize (Variety: Yellow local) at 3-4 leaf stages by means of an atomizer. Results showed that the maximum per cent disease intensity (42.23), virulence index (9.753), lesion length (9.31 x 0.74) and shortest incubation period (4.33 days) was observed in isolate RBEt 02 from Umsning, District Ri- Bhoi, followed by EJEt 03 from Saipong, District East Jaintia hills. The isolate EKEt 02 from Mawrynkhneng, district East Khasi hills showed minimum PDI (21.02), virulence index (2.744) and longest incubation period of 7.66 days. The virulent i.e RBEt 02 was further studied for the infection strategy. The leaves of inoculated plants and un-innoculated (control) were used for the study. Samples were prepared according to standard microscopy procedures and analysed using light microscopy as well as scanning electron microscopy (SEM). Conidia size was observed in the range of 13.2 and 134 μm length. The appressoria exhibited widths of 15-23 μm. Notably, the penetration of the leaf's epidermis occurred directly and specifically at the points where the epidermal cell walls met. Interestingly, penetration was not observed to occur through the stomata (tiny openings on leaf surfaces) or leaf trichomes (fine hair-like structures), even when in close proximity to these structure. The present study provide information about the virulence of Ri-bhoi district isolate as well as its infection strategy.
Delineation of Spatial Variability of Soil Fertility through Digital Soil Maps: A case study of Central Plain Zone of North-West India
Digital maps are powerful tools that allow for the visualization and analysis of this variability, providing valuable insights into the distribution of features across space. Sustainable farming practices begin with focusing on smaller areas with better soil than larger ones. No single concept can account for the wide range in soil conditions. The current investigation was carried out at a Krishi Vigyan Kendra(KVK), Kapurthala, an agriculture extension centre of Punjab Agricultural University, Ludhiana, where 15 ha of farmland was divided into four blocks in order to map the spatial variation in soil properties such as soil organic carbon, electrical conductivity (EC), pH, and available phosphorus (P), potassium (K), zinc (Zn), iron (Fe), manganese (Mn), copper (Cu) (mg kg-1), and SOC stocks using geo-statistics. To account for spatial soil variance, digital soil mapping (DSM) was developed following the creation of the base maps using QGIS. Using a standardized technique and GPS instrument, a total of 69 soil samples were collected from different locations in blocks A, B, C, and D, at various soil depths (0-15 cm, 15-30 cm, and 30-60 cm). The surface soil pH in KVK was found to be close to neutral (7.06), while the electrical conductivity (EC) and soil organic carbon (SOC) ranged from 0.7 to 0.21 m mhos cm-1 and 1.95 to 3.98 g kg-1, respectively. For different crops, it was observed that a 25% higher dose of fertilizers than the recommended amount was necessary. In specific quantities, the average phosphorus content in blocks A, B, C, and D was 10.15 kg ha-1, 9.27 kg ha-1, 8.99 kg ha-1, and 9.35 kg ha-1, respectively. Similarly, the average potassium content in the same blocks was 112.4 kg ha-1, 103.3 kg ha-1, 102.5 kg ha-1, and 107.4 kg ha-1. These results indicate deficiencies in phosphorus and potassium levels and suggest the application of appropriate fertilizers to address the nutrient imbalances in the soil. The values for DTPA-Fe, Mn, and Cu in the surface soils of each of the four blocks (A, B, C, and D) were 20.12, 13.92, 6.88, and 4.86; 7.31, 6.08, 15.10, and 15.30; 1.23, 0.75, 0.54, and 0.64 mg kg-1. The DTPA-Zn content of the topsoil in Block A was 7.21 mg kg-1, but in Block C it was only 1.41 mg kg-1. No micronutrients were needed in any KVK block. Block A has the largest C stock (17.04 Mg ha-1) while block C had the lowest (13.22 Mg ha-1). The KVK as a whole had average bulk densities. Soil quality can be enhanced through the use of organic amendments such as green manuring, farm yard manuring, etc. These maps support land-use planning, precision agriculture, and monitoring soil health over time to make informed decisions for sustainable land management practices.
Impacts of water hyacinth planting media (Eichornia crassipes) on the growth of lettuce (Lactuca sativa), leaf mustard (Brassica intergrifolia) and tomato (Solanum lycopersicum) with hydroponic method
Water hyacinth (Eichornia crassipe) is a strongly invasive aquatic species that have great impacts on the economy, society, and environment. Water hyacinth treatment is an urgent and long-term issue. Organic composting from water hyacinth has been identified as one of the easiest and most eco-friendly methods for transferring nutrients to the plant’s growth cycle. Additionally, hydroponics is a method of growing plants according to new technology for high productivity and food safety. In this research, we combined the hydroponic growing method with the use of organic water hyacinth planting media for growing lettuce (Lactuca sativa), leaf mustard (Brassica intergrifolia) and tomato (Solanum lycopersicum). The results showed that water hyacinth planting media mixed with coir greatly influences on the growth and productivity of hydroponic lettuce, leaf mustard, and tomato. The mixture of water hyacinth and coir in a ratio of 50%:50% is the most suitable method for growing lettuce, and leaf mustard on a nutrient film technique system. Lettuce and leaf mustard growing on a water hyacinth planting media experienced an increase in root weight and length. The mixture of water hyacinth and coir in a ratio of 75%:25% is the most suitable for growing tomatoes (Solanum lycopersicum). Tomato growing on a water hyacinth planting media has an increased sprouting rate, a shortens flowering time, an increased flower number, and improves the rate of fruiting as well as enhances productivity. The nitrate content in all obtained samples satisfies WHO’s safety standards; furthermore, the lead, mercury, arsenic, and cadmium contents are not detected in the vegetable samples.