Effect of Biogas Effluent from Chicken Manure, Peel and Seed of Durian on Growth and Yield of Marigolds
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The objective of this research was to study the effects of biogas effluent from durian shell and seed combined with chicken manure on growth and yield of marigold. The experimental design was a Completely Randomized Design. Six treatments were 5 ratios 0:1 (control), 1:9, 1:7, 1:5 and 1:3) of biogas effluent:water and 5 g./plant chemical fertilizer. The experiment was conducted for 87 days at Agricultural Technology Faculty in RambhaiBarniRajabhat University. The data of plant height and stem diameter were collected every week. After flowering, number and diameterof blooming flower were measured every day. The pH and electrical conductivity (EC) of soil, chlorophyll concentration of leaves, nitrogen concentration of plant, fresh weight of roots, branches and leaves were measured at the end of experiment. The results showed that the fresh weight of stem and leave, total fresh weight, blooming flower number, chlorophyll concentration, nitrogen concentration of marigold in the chemical fertilizer was significantly higher than those of the other treatments. The growth of marigold in the control was lowest as compared to that in biogas effluent and chemical fertilizer treatments. There was no significant difference in the plant height and blooming flower diameter of marigold treated by the chemical fertilizer and biogas effluent treatments. However, the stem diameter and fresh weight of root in biogas effluent treatments were significant higher than those in the chemical fertilizer treatment. The pH of soil was reduced by chemical fertilizer as compared to the control and biogas effluent treatments.