Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Effects of reduced additional fertilizer on tomato yield and nutrient contents in salt accumulated soil

시설재배지 염류집적 토양에 대한 추비 저감 처리가 토마토 수량 및 양분함량에 미치는 영향

  • Lim, Jung-Eun (Division of Soil & Fertilizer, National Academy of Agricultural Science) ;
  • Ha, Sang-Keun (Division of Soil & Fertilizer, National Academy of Agricultural Science) ;
  • Lee, Ye-Jin (Division of Soil & Fertilizer, National Academy of Agricultural Science) ;
  • Yun, Hye-Jin (Division of Soil & Fertilizer, National Academy of Agricultural Science) ;
  • Cho, Min-Ji (Division of Soil & Fertilizer, National Academy of Agricultural Science) ;
  • Lee, Deog-Bae (Division of Soil & Fertilizer, National Academy of Agricultural Science) ;
  • Sung, Jwa-Kyung (Division of Soil & Fertilizer, National Academy of Agricultural Science)
  • 임정은 (국립농업과학원 토양비료과) ;
  • 하상건 (국립농업과학원 토양비료과) ;
  • 이예진 (국립농업과학원 토양비료과) ;
  • 윤혜진 (국립농업과학원 토양비료과) ;
  • 조민지 (국립농업과학원 토양비료과) ;
  • 이덕배 (국립농업과학원 토양비료과) ;
  • 성좌경 (국립농업과학원 토양비료과)
  • Received : 2015.09.26
  • Accepted : 2015.10.26
  • Published : 2015.12.31
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Abstract

This study was conducted to evaluate the effects of reduced nitrogen (N) and potassium (K) fertigation as additional fertilizer on tomato yield and nutrient contents in excessively nutrients-accumulated soil. Shoot and root dry weights (DW), dry matter rate for shoot, root and fruit and number of fruit in both AF50 and AF100 (50 and 100% levels of additional fertilizer) treatments were increased in comparison with those in AF0 (0% level of additional fertilizer) treatment. In case of nutrient uptake by tomato, nitrogen, phosphorous (P) and potassium contents in all tomato parts (leaf, stem, root and fruit) in AF50 and AF100 treatment were lower than those in AF0 treatment. On the contrary, soluble sugar and starch contents in all tomato parts in AF50 and AF100 were higher than those in AF0 treatment. There were differences between AF0 and AF50 or AF100 in tomato growth, yield, nutrient level and contents of soluble sugar and starch. In contrast, the level and initiation point of fertigation did not significantly affect the parameters. Based on our results, the application of properly reduced level of additional fertilizer is possible to maintain the productivity of tomato and alleviate the nutrient accumulation in plastic film house soils.

Keywords

References

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