Efficiency of biogas effluent from durian shell and seed combined with chicken manure on soil chemical property, growth and nutrient concentrations of Chinese kale and lettuce
The objective of this research was to study the efficiency of biogas effluent from durian shell and seed combined with chicken manure on soil chemical property, growth and nutrient concentrations of Chinese kale and lettuce conducted at Faculty of Agricultural Technology, Rambhai Barni Rajabhat University. The experiments were carried out in a completely randomized design (CRD) with 4 replications. Six treatments consisted of water (control T1), four concentrations of biogas effluent 25% (T2), 50% (T3), 75% (T4), 100% (T5) and chemical fertilizer (T6). The data of plant height, leaf width, leaf length, branch diameter, stem diameter, total chlorophyll content, chlorophyll a content, chlorophyll b content, fresh weight and dry weight of plant were recorded. Soil sampling was done at the start and the end of the experiment for analyzing soil chemical property which consisted of soil pH, electrical conductivity (EC), nitrogen content, phosphorus content and potassium content in the soil. Plants were harvested as samples at the start and the end of the experiment to determine nitrogen content, phosphorus content and potassium content in Chinese kale and lettuce.
