Current Issue : April - June Volume : 2016 Issue Number : 2 Articles : 5 Articles
Determining variations in fields is important for precision farming applications. Precision farming is used to determine, analyse, and manage factors such as temporal and spatial variability to obtain maximum profit, sustainability, and environmental protection. However, precision farming is excessively dependent on soil and plant test processes. Furthermore, test processes are time-consuming, laborious and expensive. These processes also cannot be performed quickly by humans. For these reasons, autonomous robots should be designed and developed for the detection of field variations and variable-rate applications. In this study, a remote-controlled and GPS-guided autonomous robot was designed and developed, which can be controlled via the 3G internet and is suitable for image-processing applications. The joystick is used to manually remotely control the robot movements in any direction or speed. Real-time video transmission to the remote computer can be accomplished with a camera placed on the vehicle. Navigation software was developed for steering the robot autonomously. In the results of the field test for the navigation software, it was found that the linear target point precision ranged from 10 to 12 cm and the distributed target point precision ranged from 15 to 17 cm....
ââ?¬Ë?Maha Chanokââ?¬â?¢ mango is an economic fruit crop widely cultivated commercially throughout Thailand. By nature,\nmango fruit has a rather limited storage life after harvest. 1-methylcyclopropene (1-MCP) has been accepted as a\ncommercial substance to improve several fruit qualities. The objective of this research was to study the effects of\n1-MCP on the external postharvest qualities and storage life on the ââ?¬Ë?Maha Chanokââ?¬â?¢ mango fruit. The experiment\nwas laid out in a Completely Randomized Design with three replicates, ten fruits per replicate. Mango fruit was\nfumigated with 1-MCP at three concentrations (1000, 1250, or 1500 nl l-1) and three fumigation periods (12, 18,\nor 24 h), compared with the control fruit. After treating, all treatments were stored under ambient temperature\n(27 C, 80%R.H.). The following determinations were made every two days for assessment of fruit weight loss,\nfirmness, chlorophyll content, decay incidence, and storage life. The results showed that fruit treated with 1500\nnl l-1 1-MCP for 24 h had the maximal fruit firmness. For chlorophyll content, the results showed that\nfruit-treated with 1500 nl l-1 1-MCP for 12 h could effectively retain the highest chlorophyll contents.\nFurthermore, both the lowest fruit decay and the longest storage life of 12 days were achieved from the fruit\ntreated with 1000 nl l-1 1-MCP for 12 h....
With the intent to control glyphosateââ?¬â??resistant and hard to control weeds, a formulation of 2,4-D choline (24.4%)\nand glyphosate (22.1%) (Enlist Duoââ??¢ herbicide) (Note 1) has been developed recently to be used\npost-emergence in corn and soybean tolerant to Enlist Duoââ??¢ in the United States. Dose response studies were\nconducted under greenhouse conditions for the evaluation of effective rates of Enlist Duoââ??¢ to control\nglyphosate-resistant common waterhemp (Amaranths rudis Sauer), giant ragweed (Ambrosia trifida L.), and\nkochia [Kochia scoparia (L.) Schrad] and to determine the effect of growth stage of these weeds on the efficacy\nof Enlist Duoââ??¢. Three parameter log-logistic models were used to develop dose response curves.\nGlyphosate-resistant giant ragweed was the most sensitive of the three weed species, followed by common\nwaterhemp, and kochia. Based on the visual control or injury estimates, the Enlist Duoââ??¢ rates required for 90%\ncontrol (ED90) of common waterhemp, giant ragweed, and kochia were 1179, 825, and 4,382 g ae ha-1,\nrespectively, for 10-cm tall plants compared to 2,480, 1,101, and 5,305 g ae ha-1, respectively, for 20-cm tall\nplants at 21 days after treatment (DAT). The ED90 values calculated on the basis of percent shoot biomass\nreduction and visual control or injury estimates were usually similar at 21 DAT. The greenhouse studies indicate\nthat Enlist Duoââ??¢ can effectively control less than or equal to 20-cm tall glyphosate-resistant giant ragweed and\nless than or equal to 10-cm tall glyphosate-resistant common waterhemp at the recommended rate (1,640 g ae\nha-1)....
The wheat precision seeding technology provided an advanced agricultural support for the high yield of wheat. But the lack of\neffective agricultural machine made this technique difficult to apply widely. In this paper a wheel mobile robot to achieve the wheat\nprecision seeding technology was designed.The kinematic model of the robot was built and simulated. And experimental study was\ntaken under different operating conditions. Because of multiple effort factors, a quadratic orthogonal rotation combination design\nmethod was applied in the experiments, identifying the main factors by analysis. Then the field test was carried out according to the\nmain factors.The experiment results showed that the qualified rates of seeding exceed 93% in different sowing speed.That reached\nthe agronomic requirements of wheat precision seeding....
Sustainable agriculture development perspective has kept in mind on the project however; other social and economic improvements are obvious. Agricultural bio-security (food safety, soil fertility, and plant and animal health) and socio-economy (improved mass scale communal farming, strengthened networking/production/income, assured market chain, entrepreneurship, etc.,) are major consideration. The project is applied for how increased quality agro products are produced without losing soil fertility and plant as well as livestock health. Similarly, project is supportive to improve income of local farmers by reducing invest cost and maximizing return of agriculture products is another project focus. Projectis reliability, effective, and efficiency are guaranteed by secure market chain, entrepreneurship, networking extension. The project is experiential base including couple of socio-economic and agriculture theories. Farmers community, farmland, livestock, farm technologies, market, and agriculture service center are operational areas. Existing knowledge, practice, and perception of local farmers, agriculture experts, and development activists have been incorporated and will be kept accordingly. In coordination and guidance of experts, major sustainability parameters will be set. Main efforts of the project is to utilize the better opportunities and potentiality rather than solving the problem alone. Objectives: Increase secure market access for quality agro production with developed farmers capacity is main objective of the project. Followings are specific objectives; 1). Farmers capacities develop 2). Increase sustainable agriculture production (livestock and farm)....
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