Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)
- Volume 33 Issue 1
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- Pages.8-14
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- 2000
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
The Effect of Nitrogen Supply on Tomato Plants by NH4-Beaker-Deposits
토마토에 대한 NH4-Beaker Deposit 비료의 질소공급 효과
- Chang, Kyong-Ran (Institute of Organic Agriculture, Dankook University) ;
- Somrner, Karl (Institute of Agriculturchemie, University of Bonn)
- 장경란 (단국대학교 유기농업연구소) ;
- Published : 2000.02.28
Abstract
Long term cultivation crops like tomato, capsicum, melon etc. demand much amount of continuous supplying of nutrition during the whole growing periods. It is not easy to cover satisfactorily the nutritional demands for them by splitted top dressings, slow release fertilizer applications and fertigation systems. To overcome these problems, the "CULTAN" (Controlled Uptake Long Term Ammonium Nutrition) Beaker Deposit techniques have been developed and it was put into PVC beaker with the combined nitrogen fertilizer type mixed with the ratio of one-third of ammonium sulfate-N and two-thirds of urea-N, in which nitrogen was loaded on the demanding amount of a tomato plant during the growing period. Gypsum was mixed as a binder, and loamy soil and compost were used as a diffusion regulator. It was placed upside down into root zone of tomato at the transplanting. Tomato roots were spreaded into the Deposit beaker by ammonium ions which attract root growth. The tomato fruit yield and nitrogen uptake by plant were increased by application of
암모늄태질소를 질소의 급원으로 공급하기 위하여 요소와 유안을 질소조성물로 하여 2대1로 혼합한 후 다시 점결제 및 확산완충계와 혼합하여 비커형태의 용기안에 충진하여 제조된 시제품인
Keywords
- Ammonium nutrition;
- $NH_4$-Beaker deposit technique;
- Controlled uptake nitrogen fertilizer;
- Point placement fertilizer;
- Environment protect