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
Morphological and scanning electron microscopic studies of two new entomopathogenic nematodes Steinernema sirsaense and Steinernema oryzae Rhabditida Steinernematidae from unexplored areas of Sirsa and Bhiwani districts of Haryana India
At CCS HAU in Hisar, entomopathogenic nematode populations were meticulously examined, leading to the identification of two novel species: Steinernema sirsaense n. sp. and Steinernema oryzae n. sp. These nematodes are distinguished by the presence of distinctive horn-like structures on the head region of their infective juveniles, classifying them into the 'bicornutum' group. Steinernema sirsaense n. sp. can be recognized by its notably large first-generation adults, with males measuring an average of 1504 μm and females 13,941 μm. The males possess 12 pairs of pre-cloacal ventral genital papillae and exhibit higher values for E% (370) and SW% (201.7). Their spicules are elongated and feature unequal ribs, and the gubernaculum possesses a ventrally curved knob at its proximal end. Infective juveniles have an average body length of 659.2 μm and six ridges. Steinernema oryzae n. sp. infective juveniles have an average body length of 683.7 μm and also display horn-like structures on their head region. Their lateral field boasts nine incisures with eight ridges, four of which are prominent. Males from both the first and second generations have distinctive body lengths and spicules, while their tails lack a mucron. The spicule manubrium is elongated and ventrally directed, with a short shaft featuring equal ribs and a gubernaculum head with a ventrally curved projection. SEM studies confirmed the presence of two horn-like papillae on infective juveniles and the unique genital papillae pattern in males.
Steinernema numeropapillatum n. sp. and Steinernema jujubum n. sp. (Rhabditida: Steinernematidae), a new entomopathogeni
Among fifteen populations investigated, two were identified as belonging to the Steinernema genus. Within this genus, the majority of populations exhibited infective juveniles (IJs) with horn-like cephalic papillae. In the sandy and sandy loam soils of southern Haryana, Steinernema was more prevalent compared to Heterorhabditis. Two new species were distinguished based on specific morphological characteristics. The first species, S. numeropapillatum n. sp., featured IJs with two horn-like structures on their head regions. These IJs had an average body length of 636.7 μm, a tail length of 57 μm, D% of 45.4, and E% of 85. First-generation males had spicules measuring 71.7 μm, a gubernaculum length of 41.2 μm, SW% of 150, and GS% of 57.6. Females lacked epiptygma and had non-mucronate tails. The second species, S. jujubum n. sp., was characterized by infective juveniles with a body length of 700 μm, an excretory pore at 50.7 μm, and a lateral field with eight ridges, four of which were raised while the outer two on each side were low. First-generation females had a nearly median vulva with epiptygma but lacked a mucronate tail. Males had large spicules (73.7 μm), tails without mucrons, and a rounded spicule manubrium with continuous shaft, equal ribs, and blunt tips. The gubernaculum was ventrally curved without a proximal hook and had a short neck. Copulatory papillae numbered 27, consisting of 13 pairs and a single large midventral precloacal papilla. This new species was grouped with other Steinernema species bearing "horn-like structures."
Integrated nitrogen management strategies with farmyard manure improves soil properties and fruit yield in chilli (Capsicum annuum L.) of Northern India
Nitrogen (N) management practices has a significant impact on fruit yield of chilli and the physico-chemical properties of soil. To ensure sustainable soil fertility and optimal fruit productivity, it is necessary to consider the distinct levels and timings under N management practices. Therefore, an experiment was conducted at the Research farm, Department of Soil Science, Punjab Agricultural University, Ludhiana, Punjab during the Kharif season of 2022-23 to evaluate the effect of N fertilizer without and with farmyard manure (FYM) in chilli on fruit yield and physio-chemical properties. The research experiment was conducted in split-plot design with three replications. There were two main plots (without and with FYM) with thirteen N treatments in sub-plots. The results revealed that integrated nutrient management (INM) plots (integration of N fertilizers with FYM @ 25 t ha-1) result significantly higher fruit productivity along with improving the soil properties with respect to N plots without FYM. The treatment, 113 kg N ha-1 applied in 4 split doses integrated with @ 25 t ha-1 FYM i.e., INM plots was proved to be significantly higher in fruit productivity (45.8%). The treatment 113 kg N ha-1 applied in 4 split doses has significantly higher macro and micronutrient content with respect to other treatments as compared to the recommended dose of fertilizer i.e, 75 kg N ha-1 applied in 2 split doses. Therefore, 113 kg N ha-1 applied in 4 split doses integrated with FYM @ 25 t ha-1 in chilli would be more beneficial for sustainable crop yield and soil fertility.
GROWTH, FLOWERING AND FRUITING BEHAVIOR OF GUAVA UNDER ULTRA HIGH DENSITY ORCHARDING SYSTEM IN NORTH EASTERN INDIA
In 2017, guava plantlets were planted at different densities to study their growth, flowering, and fruiting behaviour under ultra high density system of orcharding. The experiment was laid out at the Horticultural Research Station, Assam Agricultural University, India, in Factorial Randomised Block Design. The plants accommodated at lower density exhibited improved growth, all the plant growth attributes except the plant height tended to increase noticeably with the decrease in plant density from 10000 to 4444 plants ha-1. The canopy spread in east–west direction was larger in the population density of 5000 plants ha-1 while the north–south canopy spread was greater among plants with density of 4444 plants ha-1. The significantly higher number of flowers, fruits per branch, highest fruit set and lowest fruit drop was recorded in widely spaced population during both winter and rainy seasons of the investigation. Although the rainy season crop bears more flowers and fruits, the fruit setting was higher in the winter season during both years of experimentation. The nutrient level also significantly influenced plant vegetative and reproductive growth, an increased trend was observed with increasing nutrient level, and among all, the highest level of nutrient (70:45:35 g NPK plant-1 for first year and 130:75:65 g NPK plant-1 for second year) exhibited considerable superiority.
Development of a Low-cost Autonomous Driving System for Soil Sensing
This paper develops an autonomous-driving platform to check the condition of soil in agricultural areas. The platform, which runs on an electric motor equipped with a caterpillar, uses an RTK-GPS module for accurate position estimation to obtain position coordinates with an accuracy of several centimeters and integrates an Inertial Measurement Unit (IMU) sensor to obtain precise angle values. An algorithm is developed to control the autonomous-driving platform and proceed with the planned route to the optimal route. In order to smoothly and accurately control the direction of a small tractor, an extended Kalman filter control algorithm is used to develop an algorithm that can automatically achieve more stable path driving by eliminating instability and risk caused by rapid steering control. The route is set by combining the RTK-GPS module and IMU module, which provide precise location coordinates, and an environment is provided so that the soil contamination sensor can operate at an accurate location at regular intervals within the driving route.