Effect of Bio-Extract from Fish and Vegetable Residues on Growth and Some Physiological Characteristics of Green Oak (Lactuca sativa var. crispa L.) in Hydroponic Culture

Authors

  • Supaporn Racha ภาควิชาชีววิทยา คณะวิทยาศาสตร์ ม.บูรพา
  • Sirasatiyakorn Junkasiraporn

Abstract

This research was designed to compare the effects of bio-extract from fish and vegetable residues, and the mixture bio-extract from fish and vegetable residues on growth and physiological characteristics in green oak (Lactuca sativavar. crispa L.) that grown in hydroponics culture. In this experiment, the ratio of the bio-extract per nutrient solution was investigated (half strength) from 2 different levels, i.e. 1:500 and 1:1000. The growth responses were monitored by measuring height-above-ground, total leaf area and total dry weight. The physiology responses were monitored by measuring total chlorophyll, carotenoids, beta-carotene and ascorbic acid content. The results were collected in every 7 day for 42 days after bio-extract treatment. Results of this study revealed that green oak grown in the mixture of bio-extract from fish and vegetable at the ratio of 1:1000 had the tendency of producing height, total leaf area and total dry weight. Moreover, the mixture of bioextract from fish and vegetable at the ratio of 1:1000 had the tendency of producing total chlorophyll, carotenoids, beta-carotene and ascorbic acid content and there was  difference when compared with the green oak that grown in positive control (full strength). Based on the results, it was found that mixed bioactive compost with a 1: 1000 ratio of half strength could promote growth, total chlorophyll  and ascorbic acid content of green oak. The information obtained from this experiment can be introduced and promote farmers to reduce chemicals and the cost of growing hydroponics as well.Keywords: bio-extract, hydroponic culture, green oak

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2017-07-25

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บทความวิจัยจากการประชุมวิชาการระดับชาติ"วิทยาศาสตร์วิจัย"ครั้งที่ 9