EFFECT OF BIO-EXTRACTS ON GROWTH AND QUALITY OF LETTUCES

Abstract

The aim of this work was to determine the effects of bio-extracts on growth and quality of
lettuces. The experimental design was RCBD (Randomized Complete Block Design) with 3 treatments and 4
replications include chemical fertilizer (16-16-16), bio-extract of fish meal and bio-extract of soybean meal. This
experiment was conducted at The Division of Crop Production, Faculty of Agricultural Technology,
Rajamangala University of Technology Thanyaburi. The result of this study showed that the vegetative yield of
butter head and red oak lettuces treated with bio-extract of fish meal and soybean meal was similar to chemical
fertilizer. There was no statistically difference on the vegetative yield of red coral and green oak lettuces. Both of
bio-extract of fish meal and soybean meal could increase the color of leaves in red oak and green oak lettuces
than chemical fertilizer. Bio-extract of fish meal could increase the color of leaves in red coral and butter head
lettuces than bio-extract of soybean meal and chemical fertilizer respectively.