Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)
- Volume 16 Issue 1
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- Pages.72-76
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- 1983
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
Factors Affecting Boron Deficiency Symptoms in Spring Grown Radishes(Raphanus sativus L.)
봄무우 붕소결핍증(硼素缺乏症)의 발생생리(發生生理)에 관(關)한 연구(硏究)
- Hur, Il-Bong (Institute of Agricultural Sciences) ;
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Kim, Moo-Sung
(Kyung Hee University) ;
- Hwang, Son-Koo (Institute of Agricultural Sciences) ;
- Ryu, In-Soo (Institute of Agricultural Sciences)
- Published : 1983.03.25
Abstract
Absorption pattern and sensitivity of radishes to boron were compared with different boron treatment: soil application, foliar spray and no boron application. Six radish cultivars were planted on April 7 and harvested on June 23. Borax 1.5 Kg per 10 a was applied to soil before seeding and the 150 litters of 0.5 ppm solution with bolic acid was sprayed on leaves 3 times during the growing period. Boron content in plant was markedly increased by the soil application but no significant difference in boron contents in plants was observed between foliar spray and no application, presumably because of the insufficient dose of foliar spray. The darkening rot in root, a boron deficiency, was negligible in radishes grown in soil application plots whereas a relatively higher percentage of boron deficient plant was found from foliar spray or no application plots. The appearance of root darkening rot occurred at the rapid root enlargement stage, apparently from 55 days to 65 days after seeding. The boron contents in plants of soil application plots slightly increased at this stage while those of no boron application and foliar spray decreased. This obviously verified that boron deficiency should cause root rots showing highly significant relationship.
무우의 붕소결핍증(硼素缺乏症)으로 알려진 근부흑변현상(根部黑変現象)의 발생원인(発生原因)과 품종별(品種別) 발생율차이(発生率差異) 및 붕소(硼素) 시용효과(施用効果)를 검토(検討)하기 위하여 수용성붕소함량(水溶性硼素含量)이 0.20ppm인 사질양토(砂質壤土)에서 6개(個)의 봄무우품종(品種)을 공시(供試)하여 붕소무시용구(硼素無施用区), 엽면살포구(葉面撒布区)(붕소(硼素) 0.5ppm, 3회살포(回撒布)), 토양(土壤) 시용구(施用区)(붕사(硼砂) 1.5kg/10a)를 설정(設定)하여 실시(実施)한 시험결과(試験結果)를 요약(要約)하면 다음과 같다. 1. 무우의 근흑변(根黑変) 개체발생률(個体発生率)은 평균(平均) 무시용구(無施用区) 70%, 엽면살표구(葉面撒布区) 52%, 토양시용구(土壤施用区) 4%이였고 품종간(品種間) 발생률(発生率)은 각(各) 구별(区別)로 각각 45~90%, 30~85%, 0~l5% 범위(範圍) 내(內)에 있었다. 2. 엽중(葉中)의 평균(平均) 붕소함량(硼素含量)(파종후(播種後) 65일(日))은 무시용구(無施用区) 16.8ppm 엽면살포구(葉面撒布区) 20.3 ppm 토양시용구(土壤施用区) 36.2ppm 이였다. 3. 무우의 급격한 근비대(根肥大) 시기(時期)는 파종후(播種後) 55일(日)에서 65일(日) 사이었으며 이 기간중(期間中)의 엽중(葉中) 붕소함량(硼素含量)은 무시용구(無施用区)와 엽면살포구(葉面撤布区)에서는 근비대(根肥大)와 더불어 감소(減少)하는 경향(傾向)을 보여 이 시기(時期)에 붕소(硼素)의 공급량(供給量) 부족(不足)으로 흑변현상(黑変現象)이 발생(発生)되는 것으로 나타났다. 이와 반대(反対)로 토양시용구(土壤施用区)에서는 이 시기(時期)에 엽중(葉中) 붕소함량(硼素含量)이 약간 증가(増加)하였다. 4. 근흑변발생률(根黑変発生率)은 엽중붕소함량(葉中硼素含量)과 높은 상관(相関) (
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