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)
27 Nov 2025 (Vol - 56 , Issue- 11 )
30 Nov 2025 (Vol - 56 , Issue 11 )
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
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.
A STUDY ON COMMUNICATION BEHAVIOUR OF TRIBAL MAIZE GROWERS IN REASI DISTRICT OF JAMMU AND KASHMIR,INDIA
Effective communication plays the pivotal role in agriculture and rural development. It is considered as the basic need of human beings and web of society which makes the survival, growth, progress and development of man possible and holds the society intact and progressive. The better the communication, the better will be the development of a society. Electronisation and mechanization in communication systems have provided opportunity to access the information rapidly, accurately and repeatedly. In India tribal farmers live in less accessible and isolated villages where the dissemination of information is difficult. In this situation mass media can play the significant role to cater the information needs of tribal maize growers of hilly areas. Keeping in mind the importance of communication behaviour in the transfer of maize production technologies to the tribal farmers, a study on “Communication Behaviour of Tribal Maize Growers in Reasi district of Jammu and Kashmir, India” was conducted in Reasi District of Jammu and Kashmir which was selected purposively. Out of 12 C.D. Blocks only 4 C.D.Blocks namely Reasi, Thuroo, Arnas and Pouni were selected randomly. A sample of 20 per cent villages was selected randomly from selected Gram Panchayats. A sample of 20 per cent Gram Panchayats from each selected block was selected randomly. A sample of 20 per cent villages was selected randomly from selected Gram Panchayats. A sample of 20 per cent (150) farmers was selected randomly from selected villages. Finally,a total of 150 respondents were selected for recording their responses for study purpose. Communication behaviour of tribal maize growers has been operationalised as information input, information processing and information output behaviour of the respondents in the study. An index was developed for studying the communication behaviour of respondents, wherein information input was studied in terms of sources of information, processing of information was studied in terms of evaluation, storage and transfer of information and information output was studied in terms of dissemination of information. It was observed that the majority of tribal maize growers were using Extension Personnel of KVK, Extension Personnel of Departments of Agriculture, progressive farmers, television, relatives and friends and neighbourers as arranged rank wise 1, 2, 3,4, 5 and 6 respectively as the main sources of information on maize production technologies referred as the information input behaviour of the maize tribal growers. Majority of tribal farmers used to evaluate (processing) the information by discussing with the elder family members, progressive tribal farmers, neighbourers and local leaders/key communicators as arranged rankwise 1, 2, 3 and 4 respectively. Majority of tribal maize growers stored the information by memorization and writing in general notebooks as arranged rankwise 1 and 2 respectively. A large number of tribal maize growers transformed the information by rearranging the important information as per their needs and rearranging the information in local dialect. Majority of tribal maize growers disseminated the information (information output) to their family members, neighbourers, those who cultivate in their lands and friends as arranged rank wise 1, 2, 3 and 4 respectively. It was found that majority of tribal maize growers had medium communication behaviour towards different maize production information sources. The research helped to assess the communication behaviour of tribal maize growers.
PATHOLOGICAL CHARACTERIZATION OF DIFFERENT ISOLATES OF Dickeya zeae, CAUSING BACTRIAL STALK ROT OF MAIZE
A number of abiotic (unfavorable high and low temperature; nutritional imbalance etc.) and biotic factors such as fungi, bacteria, mycoplasma, insects and nematodes affecting the quantity and quality of the produce are known to attack cereal Among the biotic factors, the diseases caused by fungi and bacteria are economically more important because they cause heavy yield losses to the crops. Bacterial diseases are gaining importance during the recent years with several reports of emerging phytobacterial pathogens. One of them is Dickeya zeae, causing bacterial soft rot disease in Kharif sown cereals, rice and maize. The pathogen infection is typically characterized by tissue disintegration accompanied by alcoholic smell. The pathogen is aggressive especially during the monsoon season in Punjab.