Abstract:
The aim of research was to compare the growth and yield of 4 (green oak, red oak, red coral and butterhead) salads in a nutrient film technique (NFT) hydroponics system using either organic solution or a conventional inorganic fertilizer solution.
The experiment was conducted at soilless culture division, department of plant science, faculty of Agricultural Technology, Rajamangala University of Technology Thanyaburi during January2014 to May 2014. The experiment was arranged in completely randomized design (CRD) with four replication and seven treatments : soybean bioextracts mixed with pineapple, neem and mixherbs (galanga, guava leave, garlic and thumbegia) vermicompost bioextract mixed with pineapple neem and mixherbs, compared to conventional solution.
The result was found that the lettuce of conventional solution grew at significantly higher rate than the organic ones. However the mixture of soybean mixed with bioextract from soybean and pineapple had a trend to give the highest fresh weight in green oak and red oak and soybean bioextract mixed with neem had the same result in butter head. Moreover it was found that pineapple extract can reduce rotting toxic soup covering the roots of salads.
It can be concluded that soybean bioextract can be used in salad production in hydroponic system Nutrient Film Technique (NFT) by mixsing with pineapple or neem extract in order to reduce rotting toxic soup covering the root of salads.