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The mites are the most difficult to control in nutriculture of pesticide-free strawberryGyungnam, Sanchung, Byungyoung Lee, Strawberry, 1 and half acres (greenhouse), pesticide-free farming for 2 years
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It costs around US$ 30,000 to build a greenhouse of nutriculture. Mr. Lee pours 3 L of nutrition solution into each greenhouse three times a day. You can use 3 tons of nutrition solution for 20 to 25 days. He added 5 kg of sea salt instead of sea water into nutrition solution to make up mineral. This was his first tries. He is sure that it helped to increase the sweet and hardness of strawberry.
 
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He plants strawberry from Sep. 1st to 5th and harvests them until end of May. According to him, the mites are the most difficult to control specially in winter. If mites appear, the only thing he can do is stop from spreading. To control mites, he applys JADAM pesticide with 80 L of water, 10 L of ginkgo JHS, 20 L of Korean pasque flower root JHS or pokeweed JHS, 2 L of JWA and 500 ml of JS. If you add very fine red clay powder, it increases effectiveness. However, even though he added red clay powder and 1.5 kg of caustic soda with water to make 500 L, it was hard to control mites. He wants to increase the amount of JWA but he is concerned about the pollination during the blooming season.
 
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After planting, he applies 5 L of JWA, 5 L of Korean pasque flower root JHS or pokeweed JHS and 2 L of JS for a week. In the beginning, he sprays with a spray gun which has high pressure. He uses an air sprayer after November. He generally applies JADAM pesticide once in five days or once a week. If there is a lot of pest, then he applies once in three days.    

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Translated by Sunyoung Cho

Other articles by Kyongho KimInterviewed on : 2018.03.05 14:44

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#Sangchung#Byungyoung Lee#Strawberry

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