Deploying with small tractor In order to improve production efficiency and reduce the labor in soybean production, experiment, RCB 6 repeated soybean varieties 84-1 consists of Lop Spacing between rows 75 cm.The population 4 rate compared to the spacing 50x20 cm 3 stem hole. Conducted at the agricultural research and development center of Lopburi, Mueang Lopburi experiments in ฤดูแล้งและ rainy years 2557 found that planting distance between rows 75 cm.Can use the small tractor in spraying pesticide pest species to the range start seeds (R5) without making soybean has been damaged. Yield, it was found that the spacing 75x10 cm.4 stem hole, get the maximum yield in both dry and wet seasons and was 452 299 kg / ha respectively, and the differences with the spacing. 50x20 cm 3 stem hole yield in dry season and wet season and was 385 235 kg./ Rai respectively. The yield components, it was found that the spacing 75x10 cm 4 stem hole, decreasing population compared to the maximum 12-14% rate total population. The population is between 73 315-74,,738 trees / HA and also make a number of pods per plant and seed size decreased. For increasing production efficiency by using the spacing between the rows 75 cm.Can use the small tractor in spraying weed and insect pest fast and injection, spray uniform increase. Chemical fertilizer with full cone as well as weeds can very fast.The production cost is reduced, the rai
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