Effects of Various Bio-composts on Growth and Yield of Cos Lettuce นงลักษณ์ พยัคฆศิรินาวิน สุจิตรา สืบนุการณ์ และ อนิวัฒน์ คุมมินทร์

Abstract

Research on the Effects of using different types of bio-compost on growth and yield of Cos Lettuce. The experiment was based on Randomized Complete Block Design (RCRD) with 9 treatments (T) and 3 replications of 15 bags in each treatment. The experiment showed that the used of golden apple snails bio-compost and coconut water (at the rate of 2,000 kg/ rai) (T3) were the most suitable types and ratios of bio-compost. Because of the highest value of the plant height, canopy width, leaf length, fresh and dried weight of the plant including roots at 21.05 cm, 20.23 cm, 17.90 cm, 35.47 g/plant and 19.50 g/plant, respectively. The average leaf number per plant and leaf width were medium at 8.00 leaves/plant and 5.55 cm respectively. In order, follow by synthetic microbial bio-compost (at the rate of 2,000 kg/rai) (T4) due to the average plant height (18.40 cm), plant total root fresh weight (30.21 g/plant) and plant total root dry weight (19.30 g/plant). The use of 46-0-0 chemical fertilizer at the rate of 25 kg/rai together with golden apple snails bio-compost and coconut water (at the rate of 1,000 kg/ rai) (T7) was not recommended. Because of the most of the indicators were at the lowest level.