トマトの隔離床栽培における尻腐れ果発生におよぼす施用窒素形態の影響

概要

論文の詳細を見る
Tomato plants were grown on uncultivated soil packed in boxes, and the influence of three factors, nitrogen sources, N application rates and soil moisture, on the incidence of blossom end rot (BER), a Ca-related disorder, was investigated. An experiment was also conducted at an isolated bed after the sterilization of the media, and the effect of nitrate N application on the BER and the calcium concentration in petiole sap was examined. 1) In the box culture experiment, the BER was affected in the order : soil moisture > nitrogen sources > N application rates. 2) Close relationship was observed between the incidence of BER and the ammonium concentration in soil solution. In the soil where nitrification had been delayed, the unnitrified ammonium was likely to suppress calcium absorption and induce the BER. 3) In the isolated bed culture experiment, when only nitrate nitrogen was applied, the BER was decreased and the influence of soil moisture on the incidence was also decreased. The application of nitrate N instead of ammonium was effective in decreasing the BER. 4) A relationship was clearly observed between the incidence of the BER and calcium concentration in petiole sap from the leaf near the trusses, just after blooming. When the calcium concentration became below 200 mg L^<-1>, the BER was more likely to occur. It is now possible to predict the incidence by determining calcium concentration in the petiole sap was suggested.
社団法人日本土壌肥料学会の論文
2001-08-05

トマトの隔離床栽培における尻腐れ果発生におよぼす施用窒素形態の影響

スポンサーリンク

概要

著者

関連論文

スポンサーリンク