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Relationship between Cucumber Yield and Nitrate Concentration in Plastic Film House with Ryegrass Application

호밀이 투입된 오이 시설재배지에서 수량과 토양용액의 질산태질소과의 관계

Lee, Chang Hoon;Lim, Tae Jun;Kang, Seong Soo;Kim, Myung Sook;Kim, Yoo Hak
이창훈;임태준;강성수;김명숙;김유학

  • Received : 2012.11.13
  • Accepted : 2012.12.10
  • Published : 2012.12.31

Abstract

This study was conducted to estimate the effect of nitrogen reduction by applying ryegrass and to determine the relationship between yield and nitrate concentration of soil solution for cucumber cultivation in plastic film house. Nitrogen levels with recovery of ryegrass ($42.3Mg\;ha^{-1}$) was 0, 50, 75, 100 % of 199 kg N $ha^{-1}$ as N recommendation by determining soil EC value. Yield and nitrate concentration in soil solution was investigated during cucumber cultivation. Yields of N treatments applied ryegrass showed 64.3, 70.9, 70.3, and $76.5Mg\;ha^{-1}$, respectively, it could reduce about 25-50% of nitrogen application compared to yield ($68Mg\;ha^{-1}$) of NPK plot applied 199 kg N $ha^{-1}$. Nitrate concentration in soil solution was average 26.0, 30.1, 41.4, $58.5mg\;L^{-1}$ during cucumber cultivation and was related between yield and average nitrate concentration of soil solution following as; $Y=49.3+0.63X+0.0034X^2$ ($R^2=0.778^{**}$). However, it needs to conduct extra-experiment due to high variation of nitrate concentration during cultivation periods.

Keywords

Ryegrass;Electric conductivity;Nitrogen;Soil solution;Nitrate

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Cited by

  1. Effect of Nitrogen Application Levels on Nitrate Concentration in Soil Solution under Plastic Film House vol.48, pp.1, 2015, https://doi.org/10.7745/KJSSF.2015.48.1.030

Acknowledgement

Supported by : 국립농업과학원