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)
30 Jun 2026 (Vol - 57 , Issue- 07 )
31 Jul 2026 (Vol - 57 , Issue 07 )
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
A STUDY ON MEDIA PREFERENCES OF NATURAL FARMERS IN REASI DISTT. OF JAMMU &KASHMIR, INDIA
Communication is a crucial aspect of every development facet. The concept of development is particularly significant in the hilly areas, thus, all the stakeholders should converge in order to come up with the best communication strategies to promote development in these areas. Communication for development utilizes all available communication tools including ICTs, traditional tools and the convergence of old and new technologies. In this way, it is innovative and revolutionary [8]:7. Print media provides news on current events and address specific topics in agriculture [21]:52. Farmers preferences of communication should be prioritized to improve agricultural communication and subsequently productivity which is dire in the hilly areas of Jammu and Kashmir in India. In present era, Indian extension system is under immense pressures where the extension workers, have to cater not only vast extension services but also to perform administrative, election, input supply and many other assignments. Under such circumstances, it is not feasible to serve all the farmers, all the time for all the problems when ratio of extension worker and farmer, the sender and receiver is more than 1:1000 in India. Thus, the potential of mass media can be exploited to serve the expanding rural population in this direction. Information plays significant role in our society. Its large scale dissemination through highly preferred communication media constitutes one of the most striking developments. Natural farming has an immense scope in hilly areas of Union Territory of Jammu & Kashmir in India. In order to increase the natural farming in hilly areas, it is necessary that the natural farmers of hilly areas should adopt the standarised natural farming technologies. In order to know the media preferences of natural farmers residing in hilly areas, the present study was conducted in hilly district Reasi of Union Territory of Jammu and Kashmir in India which was selected purposively. A sample of 120 KVK trained natural farmers was selected randomly. A list of different sources of natural farming information was prepared and respondents were asked to indicate their preferences on a three point scale. It was found that Extension Personnel of KVK and Extension Personnel of Agri.Deptt. were highly preferred by the natural farmers followed by the progressive natural farmers of the area.
Effect of Municipal Sludge on Soil Properties and Tree Nutrient Status
The present investigation was carried out to study the nutritional status of soil and tree species using sludge. The research was conducted at Punjab Agricultural University in collaboration with the State Forest and Wildlife Preservation Department at Forest Nursery Baddowal, Ludhiana. Sludge from different sewage treatment plants was used as an organic amend-ment. The main plot treatments included sludge from three sites (Bhattian, Balloke, Jamalpur) and a control (no sludge), and the sub-plots included three forest tree species: Terminalia arjuna (Arjun), Eucalyptus clone 413 (Safeda), and Melia composita (Dek). Different soil macro- (phosphorus, potassium) and micro-nutrients (zinc, iron, manganese), as well as organic carbon, electrical conductivity, pH, and dehydrogenase activity, were ana-lyzed in the soil after twelve months. The Arjun plants led to the highest improvement in soil macro- and micro-nutrient levels when grown with sludge from Bhattian, as compared to sludge from Balloke and Jamalpur. Plant macro- (nitrogen, phosphorus, potassium) and micro-nutrient (zinc, iron, manganese) contents were higher in sludge-treated soils (notably Bhattian) than in the control. Overall, sludge application significantly en-hanced soil fertility and the nutrient uptake of tree seedlings, with Arjun showing the greatest nutrient accumulation among the species.
Impact study of Mustard Cultivation through Cluster Frontline Demonstration from Sepahijala district of Tripura, India
Mustard and rapeseed arevital oilseed crops in India; however, both national and regional yields are substantially below their genetic potential, particularly among resource-constrained smallholders. In Sepahijala district of Tripura, North-east India, farmers typically achieve approximately 7–8 q/ha, which is far lower than the 14 q/ha potential of enhanced cultivars. To mitigate this yield gap, we executed Cluster Frontline Demonstrations (CFLDs) utilising enhanced mustard varieties and methodologies from 2020 to 2025. Over a span of five years, 206 farmers on 130 hectares engaged in on-farm demonstrations utilising high-yielding cultivars (NRCHB-101 and PM-27) with optimal agronomic practices, training, and input assistance. The yields from the enhanced technology averaged 10.3–10.8 q/ha compared to 7.2–7.9 q/ha in farmers' plots, representing a 34–43% increase. This resulted in markedly increased profitability, with demonstrators achieving net income earnings of Rs 26,700–33,250 per hectare compared to Rs 15,346–22,828 per hectare under conventional practices. The benefit–to–cost ratios improved from around 1.6 to 1.8. The observed improvements align with those from other CFLD research, such as a 36% increase in Tripura and approximately 28–30% in Uttar Pradesh, highlighting significant technological and extension gaps of approximately 3.3–3.8 q/ha. Socioeconomic surveys indicated that participants were predominantly older (>50 years), low-literacy, marginal farmers, which constrained the swift adoption of all approaches. Reported key constraints included delayed sowing, seed availability, pest control, and irrigation shortages, highlighting issues faced by both farmers and extension services. The instance illustrates the efficacy of participatory demonstrations in enhancing mustard output and income, while also emphasising ongoing adoption obstacles. Future expansion will necessitate resolving input logistics, maintaining training continuity, and implementing supportive policies to uphold enhanced practices.
Enduring (residual) effect of beseem-ryegrass mixed cropping and succeeding fodder crops along with nutrient management on overall properties of soil in Indo-Gangetic Plains of India
Apart from contributing to increasing overall productivity and soil fertility, mixed cropping of legume-cereal fodders and balanced fertilization offer the diversity of nutrients needed to suit the varying needs of animals raised on the same field. Additionally, this keeps the long-term organic matter content reserves intact to be utilized by the succeeding crops. Consequently, A study was carried out to assess the impact of berseem -ryegrass mixed cropping and nutrient management with 24 treatment combinations on the available micronutrients (Zn, Cu, Fe, and Mn), macronutrients (available N, P, and K), and soil physico-chemical properties (pH, EC, and bulk density) in the Indo-Gangetic plains. Between 2017 and 2019, the experiment was conducted in factorial Randomized block design at the agronomy section research farm of the ICAR-NDRI in Karnal (Haryana), India. After the subsequent crops (maize and cowpea) were harvested, the available N, P, and K were analyzed. The results showed that treatment 50%RDF+50%FYM had the highest available N, P, and K, or 237.38 kg ha-1, 18.68 kg ha-1, and 201.44 kg ha-1, respectively. In the case of mixed cropping, the treatment with leguminous fodder crops had the highest available N, P, and K, or 230.01 kg ha-1, 17.69 kg ha-1, and 195.08 kg ha-1, respectively. Throughout the two years of testing, the treatments with the highest values of SOC, dehydrogenase enzyme, and accessible micronutrients were discovered. Therefore, our research concludes that a cropping strategy based on the intercropping or mixed cropping of forage legumes in conjunction with balanced fertilization has a lasting impact on the availability of nutrients for the crops that follow.
Manifestation of Growth and Biochemical attributes of Tree Species Raised on Solid Municipal Waste
The present investigation was carried out at Punjab Agricultural University in collaboration with the State Forest and Wildlife Preservation Department at Forest Nursery, Baddowal (Ludhiana). The experiment consisted of four treatments (main plot) of sludge from different sewage treatment sources and a control, along with three forest tree species as sub-plots: Terminalia arjuna (arjun), Eucalyptus tereticornis clone 413 (safeda), and Melia com-posita (dek). Soil application of sludge significantly affected the physiolog-ical, biochemical, and growth characteristics of the tree seedlings. After twelve months, plant height, collar diameter, root length, number of roots, dry root weight, and dry shoot weight were all markedly higher with sludge application, especially using sludge from the Bhattian treatment plant, compared to control soil. Among the species, T. arjuna exhibited superior growth (height, roots, collar diameter, root length) across sludge treatments. Biochemical attributes, including chlorophyll a, chlorophyll b, total chloro-phyll, carotenoids, total soluble sugars, and starch content, were also signif-icantly enhanced by soil amendment with Bhattian sludge after one year. T. arjuna seedlings accumulated the highest levels of chlorophyll a, total chlorophyll, carotenoids, sugars, and starch (and nearly the highest chloro-phyll b) irrespective of sludge treatment. Overall, T. arjuna performed best on Bhattian sludge, likely due to the higher nutrient content of that sludge compared to control soil and the other sludge sources (Balloke and Jamal-pur). This study suggests that growing trees in sludge-treated soil is a viable strategy for improving seedling quality on waste-contaminated sites. Fur-thermore, it demonstrates a sustainable approach to municipal waste management by recycling sewage sludge as a soil amendment to irrigate and fertilize forests, amenity trees, and greenbelts.