Effects of wood vinegar and fermented liquid organic fertilizer on soybean (Srisamrong 1) cultivated under drought conditions [Tumbol Rong Chang, Amphoe Muang, Phichit province, Thailand]
2010
Pagnakorn, U. | Watanasorn, S. | Kuntha, C., Naresuan Univ., Phitsanulok 65000 (Thailand). Dept. of Agricultural Science | Chuenchooklin, S., Narersuan Univ., Phitsanulok 65000 (Thailand). Dept. of Civil Engineering
The efficiency of wood vinegar added to fermented liquid organic fertilizer to increase yields and reduce pest infestation was evaluated on a new variety of soybean (Srisamrong 1) in Tumbol Rong Chang, Amphoe Muang, Phichit province [Thailand] during the drought season (December 2008 to March 2009). The fermented liquid organic fertilizer from herbs and wood vinegar was evaluated in 6 treatments: 1) water as control, 2) wood vinegar, 3) derris + neem seed + turmeric + molasses; 4) turmeric + tobacco + turmeric + molasses; 5) citronella grass + neem seed + turmeric + molasses; 6) citronella grass + tobacco + turmeric + molasses. Beginning at 15 days after planting, the 6 treatments were applied as foliage application at 7 days intervals for a total of 8 applications. The yields had significantly differed in response to the application of wood vinegar and fermented liquid organic fertilizer. Particularly, Treatment 3 and 5 showed highest and lowest efficiency in average yields with 1300 and 906.25 kg/ha (208 and 145 kg/rai), respectively. There was no significant difference among treatments on yield components such as average height, pod/plant, and 100 seeds weight. However the number of seeds/plant was significantly different in Treatment 6 which showed the highest significant efficacy to increase soil organic matter. Treatment 2 (wood vinegar) showed the highest significant efficacy with insect damage scores of 1.75 compared to an average damage score of 3.29 for the other treatments.
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