Effect of Soil Salinity on Growth, Yield and Nutrients Uptake of Whole Crop Barley in Newly Reclaimed Land

신간척지에서 토양 염농도가 청보리 생육, 수량 및 양분 흡수에 미치는 영향

  • Lee, Sang-Bok (Department of Rice and winter cereal crop, NICS, RDA) ;
  • Cho, Kwang-Min (Department of Rice and winter cereal crop, NICS, RDA) ;
  • Shin, Pyung (Department of Rice and winter cereal crop, NICS, RDA) ;
  • Yang, Chang-Hyu (Department of Rice and winter cereal crop, NICS, RDA) ;
  • Back, Nam-Hyun (Department of Rice and winter cereal crop, NICS, RDA) ;
  • Lee, Kyeong-Bo (Department of Rice and winter cereal crop, NICS, RDA) ;
  • Baek, Seung-Hwa (Department of Biofood Science and Biotechnology, Chungbuk Proboncial University of Science & Technology) ;
  • Chung, Doug-Young (Department of Bio Environmental Chemistry, Chungnam University)
  • 이상복 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 조광민 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 신평 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 양창휴 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 백남현 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 이경보 (농촌진흥청 국립식량과학원 벼맥류부) ;
  • 백승화 (충북도립대학 바이오식품공학과) ;
  • 정덕영 (충남대학교 생물환경화학과)
  • Received : 2013.10.20
  • Accepted : 2013.12.12
  • Published : 2013.12.31


BACKGROUND: Newly reclaimed land has poor soil environment for crop growth since it is high in salt concentration but low in organic content compared with ordinary soil. It is known that whole-crop-barley can grow better in the soil of relatively high salt concentration than other crops but, the growth is poor at the concentration if higher than certain amount and it is a difficulty to secure productivity. Hence, the level of soil salt concentration suitable for the production of bulky feed in newly reclaimed land has been investigated. METHODS AND RESULTS: At Saemanguem reclaimed land, the land for the soil salt concentration electrical conductivity (EC) 0.8, 3.1, 6.5, 11.0 dS/m was selected; and chemical fertilizer $N-P_2O_5-K_2O$ (150-100-100kg/ha) was tested; and forage barley 220kg/ha were sown. The soil salt concentration during the cultivation period decreased in the order of harvest season>earing season>sowing season>wintering season, and the salt concentration in harvest season is 1.4-4.2 times higher than that of the sowing season. The higher the salt concentration, the poorer the over ground growth due to poor rooting; especially at EC 11.0 ds/m there was emergence but, it blighted after wintering. The Yield from the soil salt concentration 3.1dS/m and 6.5 dS/m was 68% and 35% from that of the soil salt concentration 0.8 dS/m (8.8 MT/ha) respectively. The proline content in early life stage was more than that of the harvest season, and it increased with salt concentration. The higher salt concentration, the more $Na_2O$ and MgO content in harvest season; but the higher the salt concentration, the less the content of N, $P_2O_5$, $K_2O$ and CaO. CONCLUSION(S): When the soil salt concentration becomes higher than 3.1 dS/m, the yield becomes poor because there is serious growth inhibition of forage barley both in root part and above aerial part that results in unbalanced absorption of nutrients. Therefore, it is recommended that the salt concentration should be lowered below 3.1 dS/m by underground drainage facilities or irrigating water for the stable production of whole-crop-barley.


Grant : Cooperative Research Program for Agriculture Science & Technology Development

Supported by : Rural Development Administration


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