Growth And Yield Of Lettuce (Lactuca sativa L.) Under Organic Cultivation

Abstract

This research was conducted to understand the technology of organic lettuce cultivation using liquid organic fertilizer and pesticide on the production of lettuce. Study was arranged in completely randomized design (CRD) with two treatments and 16 replicates. The treatments were P1 (goat manure + 6 ml/l of SO Kontan LQ Liquid Organic Fertilizer for soil (LOF) + 6 ml/l of SO-Kontan Fert. LOF for leaf + 6% of maja-gadung botanical pesticide + 10 g/plant of biological agent Trichoderma harzianum) and P2 (goat manure + 6 ml/l of SO-Kontan LQ LOF + 6 ml/l of SO-Kontan Fert. LOF + 6% of maja-gadung botanical pesticide + bamboo leaves + 10 g/plant of biological agent T. harzianum. Results showed that the P2 was more effective than P1 for all variables of growth and yield, except the green colour of leaves. The preferable technology of LOF and botanical pesticide in organic lettuce cultivation was the P2 (goat manure + 6 ml/l of SO-Kontan LQ soil LOF Lq + 6 ml/l of SO-Kontan Fert. LOF + 6% of maja-gadung botanical pesticide + bamboo leaves + 10 g/plant of biological agent T. harzianum as indicating by productivity in 87.17 g per plant.