Influence of Amount of Waste Nutrient Solution and Compost on Growth and Quality of Tomato Grown by Fertigation
2009
Zhang, Cheng Hao, Zhejiang Academy of Agricultural Science, Hangzhou, China | Kang, H.M., Kangwon National University, Chuncheon, Republic of Korea | Kim, I.S., Kangwon National University, Chuncheon, Republic of Korea
Waste nutrient solution (WNS) that composed of nutrient solution of horticultural research institute in Japan and used for culture tomato in perlite hydroponics showed 1.9~2.4 dS/m of EC and 5.5~7.1 of pH. Although NH₄+-N concentration of WNS decreased remarkably, the others did not change significantly as compared with supplied solution. The growth characteristics such as plant height, stem diameter, leaf length, and leaf width were increased as amount of compost was increased in 1 L WNS supply treatment. But there was not any regular tendency on growth characteristics in 2 L/plant WNS supply treatment. The chlorophyll content of tomato leaf was highest in 1 L/plant WNS supply and 4,000 kg/10a compost treatment. The fresh and dry weight, and yield of tomato fruit also increased with increase of amount of WNS and compost, and they were highest in 1 L WNS supply and 4,000 kg/10a compost treatment. The sugar content of tomato fruits was not influenced by amount of WNS and compost, fructose and glucose and total sugar was highest in 2 L/plant WNS supply and 2,000 kg/10a compost treatment. Therefore fertigation culture used WNS is environmentally friendly and can guarantee yield and quality of tomato fruits and growth of tomato plants.
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