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
Evaluation of mechanical tools to reduce the number of mandays in weed management of newly established tea plantation
Young tea, being highly susceptible to weeds and subjected to herbicide damage due to drift leads to higher dependence on manual weed control. Therefore, two weeders had developed for evaluating their field performance after modification of traditional weeder and field experiment was conducted at Jorhat, Assam with a view to monitor the severity of weed infestation and tea growth in relation to weed management methods in newly established tea. Manual weeding (cheeling) at various intervals was compared with two types of young tea weeder (Type I and Type II), with or without mulching under randomized block design with four replications. Paspalum conjugatum Berg., Axonopus compressus (Sw.) Beauv. and Borreria hispida (L.) K. Schum. were the dominant weed florae. Results revealed that weed control with young tea weeder (YTW) was superior to that of traditional cheeling and it can save mandays to an extent of 25 – 38 per cent, compared to conventional cheeling during the critical period of weed infestation and the saving in man power requirement was more when the collar of young tea was mulched with dry bamboo leaves and weeding done with YTW. Among the treatments, combination of Tocklai YTW II (Type II) with mulching was found to be the best in respect of less weed density, dry weight and man power requirement. This treatment also recorded the highest values of all the biometric parameters. Hence, a combination of mulching and YTW, particularly Type-II was considered the most appropriate treatment for weed management in young tea.
Evaluation of mechanical tools to reduce the number of mandays in weed management of newly established tea plantation
Young tea, being highly susceptible to weeds and subjected to herbicide damage due to drift leads to higher dependence on manual weed control. Therefore, two weeders had developed for evaluating their field performance after modification of traditional weeder and field experiment was conducted at Jorhat, Assam with a view to monitor the severity of weed infestation and tea growth in relation to weed management methods in newly established tea. Manual weeding (cheeling) at various intervals was compared with two types of young tea weeder (Type I and Type II), with or without mulching under randomized block design with four replications. Paspalum conjugatum Berg., Axonopus compressus (Sw.) Beauv. and Borreria hispida (L.) K. Schum. were the dominant weed florae. Results revealed that weed control with young tea weeder (YTW) was superior to that of traditional cheeling and it can save mandays to an extent of 25 – 38 per cent, compared to conventional cheeling during the critical period of weed infestation and the saving in man power requirement was more when the collar of young tea was mulched with dry bamboo leaves and weeding done with YTW. Among the treatments, combination of Tocklai YTW II (Type II) with mulching was found to be the best in respect of less weed density, dry weight and man power requirement. This treatment also recorded the highest values of all the biometric parameters. Hence, a combination of mulching and YTW, particularly Type-II was considered the most appropriate treatment for weed management in young tea.
EFFICACY OF DIFFERENT HERBICIDE FORMULATION OF MAIZE CROP IN JHARKHAND, INDIA USING RANDOM FOREST MODEL
A field experiment was conducted during the Kharif seasons of 2021 and 2022 to evaluate the optimal chemical weed management strategies for maize cultivation. The experiment employed a randomized block design with 14 distinct treatments, each replicated three times, involving pre-emergence (PRE) and post-emergence (PoE) applications of herbicides, including pendimethalin, atrazine, tembotrione, topramezone, halosulfuron, mesotrons, and 2,4-D, either alone or in combination. The results indicated that hand weeding twice (20 and 40 DAS) resulted in the lowest total weed density at 30 DAS (84.70% and 82.75%, respectively) and dry matter at 30 DAS (96.79% and 95.89%, respectively) during Kharif 2021 and 2022, followed by tembotrione post-emergence and hand weeding at 20 DAS. Grain yield was significantly higher (54.6 and 55.1 q/ha, respectively) with weed-free treatment than all other treatments; however, it was statistically at par with treatments T12, T11, T8, T7, T6, T5, and T4 during Kharif 2021 and 2022, followed by atrazine 1.5 kg/ha as PE fb tembotrione 120 g/ha at 20 DAS (52.9 and 53.9 q/ha, respectively). The random forest model (RFM) exhibited exceptional predictive accuracy for yield, with an R² value exceeding 0.85, identifying the test weight and grain per cob as the most significant predictors. The study concluded that specific herbicide combinations can effectively manage weed populations while enhancing maize productivity, but integrating cultural practices with herbicide use could provide a more balanced and sustainable approach to weed management.
Effect of paddy straw incorporation and potassium management on growth, water use and productivity of wheat
Potassium mining from soil and paddy straw burning are the major issues leading un-sustainability of the rice-wheat cropping system. Paddy straw incorporation, soil application and foliar feeding of K affect the growth and productivity of wheat. Therefore a field experiment was conducted for 2 years in wheat with eleven treatments viz. control (without soil K application and without paddy straw incorporation (K0PS0)), without soil K with 8 t ha-1 paddy straw incorporation (K0PS8), 25 kg K ha-1 soil application without paddy straw (K25PS0), K0PS8 plus 2 spray of 2% KCl at tillering and booting (K0PS8+KClTB), 12 kg K ha-1 with paddy straw (K12PS8), K12PS+KClTB, 18 kg K ha-1 with paddy straw (K18PS8), K18PS8+KClTB, 25 kg K ha-1 with paddy straw (K25PS8), K25PS8+KClTB, 35 kg K ha-1 with paddy straw (K35PS8). Results revealed that during both years, tillering to booting, booting to heading and anthesis to maturity duration, evapotranspiration, apparent water productivity, water use efficiency and grain K content of wheat were significantly increased with K25PS0, K12PS8, K18PS8, K25PS8, K35PS8, K12PS8+KClTB, K18PS8+KClTB, K25PS8+KClTB, K35PS8 compared to K0PS0. These parameters were at par in K25PS8 +KClTB, K35PS8, K25PS8 and K18PS8 +KClTB but significantly higher than K0PS0, K0PS8, K0PS8+KClTB and K12PS8. However these parameters were at par in K0PS8, K0PS8+KClTB, K12PS and K12PS8+KClTB during both years but significantly higher than control. The improvement in phonological stages with itegration paddy straw incorporation, soil and foliar K application increased the water use which enhanced K concentration of grains resulting higher grain yield of wheat.
Land suitability assessment of pigeon pea (Cajanus cajan ) in plains and hilly region of Western India using integrated AHP and GIS techniques
The current research set out to use an integrated Analytic Hierarchy Process (AHP) and Geographic Information System (GIS) technique to determine which areas in the semi-arid to sub-tropical environment of the South Gujarat Region, Western India, were most suited for growing pigeon pea [Cajanus cajan (L.) Millsp.] This study used key parameters of soil and climate for the AHP that included texture of soil, depth of soil, AWC, slope, rainfall, soil EC, and pH. The analysis's parameter weights and sub-parameter scores were obtained using the AHP technique. Land suitability for pigeon pea cultivation was evaluated using the modeling features of GIS in a weighted overlay analysis of input parameters. The findings reveal, nearly an area of 17.3% (369240.0 ha) clustered as highly suitable, 29.58% (631250.0 ha) as moderately suitable, 9.02% (192470.0 ha) as marginally suitable, and 26.82% (572370.0 ha) is deemed unsuitable for pigeon pea cultivation in the study area. The analysis shows that, combined AHP and GIS method displayed to be highly potent in enhancing the land suitability evaluation precision. The analysis of the disparities among the identified potential areas and the existing mean pigeon pea area under cultivation from 2015–16 to 2022-23 indicates that approximately 10.9% (232672.9 ha) land under highly suitable and 40.5% (863922.9 ha) of both highly and moderately suitable land are available for expanding pigeon pea cultivation in the South Gujarat Region to boost the production and productivity with the available inputs and natural resources.