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WOS Indexed (2023)
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. Shenyang Jianzhu Daxue Xuebao (Ziran Kexue Ban)/Journal of Shenyang Jianzhu University (Natural Science) General Medicine (ISSN:1311-1817) Chinese Journal of Evidence-Based Medicine Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Lizi Jiaohuan Yu Xifu/Ion Exchange and Adsorption
04 Dec 2023 (Vol - 54 , Issue- 12 )
31 Dec 2023 (Vol - 54 , 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
Impact of weather variables on development of charcoal rot disease in different sowing dates of sesame
Sesame (Sesamum indicum L.) is an economically important oilseed crops worldwide. Charcoal rot disease incited by Macrophomina phaseolina (Tassi) Goid. is one of the most destructive disease of sesame and causes heavy losses annually. Environmental factors play an important role for development of disease at different growth stages of the crop. Weather factors play a major role in activation, growth and multiplication of the pathogen and subsequently disease development. Time of pathogen attack and progression of disease in relation to prevailing weather conditions is necessary for prediction of disease occurrence and their management. Epidemiological studies showed the onset of charcoal rot varied in sesame varieties HT 1 during different dates of sowing. Among three dates of sowing, the maximum disease incidence was recorded in early sown crop followed by mid sown and minimum in late sown crop in consecutive two years. The quantitative relationship between charcoal rot disease progressions and weather factors on sesame varieties during different dates of sowing revealed that disease incidence was positively correlated with maximum temperature, evaporation and sunshine hours.
Productivity, Profitability and Water Use Efficiency of Sweet corn (Zea mays L. saccharata) as Influenced by Irrigation Scheduling
This field study was conducted at Research Farm of AICRP for Dryland Agriculture at College of Agriculture (RVSKVV), Indore (MP) during the rabi 2019-20 and 2020-21. Irrigation scheduling (IW: CPE) consisted three different level viz., 0.6 IW: CPE, 0.8 IW: CPE and 1.0 IW: CPE with 6 replications in Randomized Block Design (RBD). Irrigation was applied through drip system having inline emitter of 4 lph (Litre per hour). Results revealed that among the irrigation scheduling, 1.0 IW: CPE recorded the taller plants (188.70 cm), maximum dry matter/plant (179.50 g) and number of leaves/plant (12.70) which was followed by 0.8 IW: CPE. Similarly, irrigation at 1.0 IW: CPE recorded the highest values of number of cobs/plant (2.67), cob length (29.5 cm) and weight of cob without husk (311.90 g) followed by 0.8 IW:CPE and 0.6 IW:CPE. 1.0 and 0.8 IW: CPE scheduling increased green cob yield by 10.9 and 9.3 per cent over 0.6 IW: CPE scheduling. Among the irrigation scheduling, 0.8 IW: CPE gave maximum net returns of ₹255796/ha and B:C ratio of 5.73. The maximum WUE (38.41 kg/ha-mm) followed by 47.32kg/ha-mm and 57.70 kg/ha-mm were observed in 1.0 IW:CPE, 0.8 IW:CPE and 0.6 IW:CPE, respectively. Harvested rainwater in the farm pond can be used for high remunerative crops i.e. sweet corn for obtained the better profit. Hence, it is concluded that for getting higher production and net returns from rabi sweet corn can be achieved by adopting proper irrigation scheduling from harvested rainwater.
Soil And Leaf Macro-Nutrients Status In Mango (Mangifera indica L.) cv. Dashehari Orchards Under Samba District Of Jammu Region
Based on uniformity in respect of age and tree vigor, 22 representative orchards were selected and “Dashehari” variety of mango was selected for study. Soil (0-30, 30-60 and 60-90 cm depths) and plant (leaf) samples collected from mango orchards were analyzed for physico-chemical properties (pH, EC, OC) and macro-nutrients (N, P, K, Ca, and Mg, S). The Organic carbon contents were medium to high. The per cent coefficient of variations found high in soil and plants could be due to variations in parent material and orchard management practices. Electrical conductivity was positively and significantly correlated with Potassium, Calcium and Magnesium and Organic carbon with Calcium and Magnesium. Available Phosphorus exhibited positive and significant relationship with their respective leaf nutrient contents. Soil samples were collected from three depth of soil viz., 0-30cm, 30-60 cm and 60-90 cm and analyzed for various physico- chemical properties and nutrient status. Leaf and fruit samples were also collected from the same orchards and analyzed for nutrient content, quality parameters and yield. These mango orchards have shown variation in soil pH 6.24-7.42, Electrical conductivity 0.05-0.27 ds/m, Organic carbon (0.21-1.90 %) from surface layer 0-30 cm, pH 6.30- 7.46 and 6.33-7.48, Electrical conductivity 0.04- 0.25ds/m and 0.03-0.24 ds/m and Organic carbon (0.18- 1.86 %) and (0.15-1.84%) from the sub- surface layer 30-60 cm and 60-90 cm. Nitrogen (107.10-298.26), (75.60-282.63) and (57.80-280.15) kg ha-1 from the surface and sub- surface of the soil layers. Phosphorus (7.60-22.90), (6.90-20.00) and (6.20-18.42) kg ha-1 Potassium (95.10-224.23), (90.00-217.19) and (79.34-210.00) kg ha-1 Calcium (4.02-6.35), (4.00-6.32) (4.00-6.29) [c mol (p+) kg]-1 from the soil depth 0-30, 30-60 and 60-90 cm, Magnesium (2.18-3.32), (2.16-3.28) (2.14-3.28) [c mol (p+) kg]-1 and Sulphur (12.60-19.74), (10.40-17.90) and (9.80-16.95) kg ha-1. The leaf nutrients ranged Nitrogen (1.10-2.22%), Phosphorus (0.11 -0.21%) Potassium (0.19-0.41%), Calcium (1.8-2.24 %), Magnesium (0.42-0.82 %) and Sulphur (0.04-0.25 %) respectively.
Residual pattern of imidacloprid and its metabolites in different soil types
Continuous and ever-increasing use of imidacloprid for the control of sucking pests, chewing beetles and soil insects, leads to diverse tribulations in the environment. The metabolites formed after degradation may have greater insecticidal and mammalian toxicity. The degradation studies in soil are very imperative to study the evaluation of pesticides and its metabolic products in the environment. Due to very limited information regarding dissipation behavior and its metabolic degradation of imidacloprid in soil, the present study was undertaken to estimate the dissipation pattern of the parent compound imidacloprid and its metabolites in different types of soil. Different types of soil i.e. sandy loam, loamy sand and clay loam soil were collected from different geographical locations of Punjab. Each type of the soil samples were treated with different concentrations of imidacloprid i.e. 100, 200 and 400 mg/kg. The samples were maintained at 25 ± 2°C in laboratory. After 7 days of treatment with 100 mg/kg imidacloprid, the total residues of imidacloprid and its metabolites for sandy loam, loamy sand and clay loam soil was reported to be 65.39, 68.96 and 69.99 mg/kg, respectively. Sandy loam soil type showed greater dissipation behaviour of imidacloprid followed by loamy sand and clay loam soil. Even after treatment with high doses of imidacloprid, traces of metabolites residues such as 6-chloronicotinic acid, nitroguanidine, olefin, nitrosimine, urea and 5-hydroxy were detected.
Design and Experiment of Wheeled Robot and Attitude Intelligent Adjustment System in Hilly Mountains
Ordinary agricultural machinery is prone to tipping and tail swinging in hills and mountains, a wheeled robot whose attitude can be adjusted was designed in this paper. In order to carry out high precision and fast positioning, a three-point support leveling scheme was adopted, and a plane for positioning was used. The robot chassis is mainly composed of a front steering drive axle, two rear tire swinging mechanisms. The front steering drive axle can rotate around the longitudinal axis of the chassis, and the two rear wheels can swing around the hinge point, thus the attitude adjustment is realized. The design and calculation of the walking mechanism and the attitude adjustment mechanism were carried out, and the key parameters were obtained. An attitude intelligent detection and control system composed of vehicle-mounted industrial computer, STM32 controller, LIDAR and attitude sensor was also built. The attitude intelligent detection and control system was built based on the ROS, and the look-ahead control technology was used to plan the attitude adjustment path. The slope-climbing test of the prototype shows that the X-axis angular velocity is reduced by about 25% and the Y-axis acceleration is reduced by about 60%, which greatly reduces the possibility of tipping and rolling over. The turning test of the prototype shows that the acceleration along the X-axis can be reduced to zero, and the angular velocity around the Z-axis can be reduced by about 15%, which greatly reduces the risk of roll over and tail swing.