2_Chloroethylphosphonic Acid가 잎담배 성숙에 미치는 영향

Effects of 2-Chloroethylphosphnic Acid on Ripening of Tobacco Leaves

본 실험은 성숙촉진제 C.E.P.A(2-chloroethyl phosphonic acid)를 처리하여 잎담배 성숙촉진 여부와 나아가서 수량 및 품질에 미치는 영향을 검토코저 1970-1971년 양년에 걸쳐 소사시험장 및 산지적응시험을 시도한 바 그 결과를 요약하면 다음과 같다. 1. 농도가 높을수록 잎담배 성숙을 촉진시키는 정도가 현저하며 그 효과는 처리후 3-4일부터 나타났다. 2. 열 표면에만 처리해도 효과가 있었으며 성숙촉진 효과는 처리 부분에만 뚜렷하였다. 3. C.E.P.A 처리 효과는 성숙기에 가까운 하위엽에서 뚜렷했고 상위엽에서는 완만하였고 성숙 정도에 따라 차이가 현저하였다. 4. C.E.P.A는 농도가 높을수록 성숙충족효과는 크지마는 900ppm 이상이 되면 잎의 신전율이 떨어져서 약간이나마 감수가 되며 3,000ppm에서는 약 9%의 수량 감을 가져 오므로 적정농도는 900ppm으로 볼 수 있다. 5. C.E.P.A의 성숙충족 일수를 보면 100ppm에서 1일, 300ppm 3일, 450ppm 3일, 900ppm 4일, 3000ppm에서 약 7일간 단축시킬 수가 있었다. 6. 건조 경과를 보면 C.E.P.A처리구는 무처리에 비하여 시간으로 약 29%의 건조시간과 45%의 연료를 절감할 수 있는 가능성이 엿보인다. 7. 그러므로 잎담배 재배에 있어 C.E.P.A를 적정농도(900ppm)로 처리하면 수량의 감소를 가져 오지 않으면서 품질에서 13.5% 수납대금에서 12%의 소득을 증대시킬 수 있으며 부수적인 효과로서 3,000ppm에 약 7일, 건조시간에서 약24시간을 단축시킬 수 있다고 본다.

To investigate the effects of C. E. P. A(2-chloroethyl phosphonic acid) on the ripening of tobacco leaf, the effects on the yield and quality of leaf tobacco, this experiments were carried out during the period of from 1970 to 1971 at tobacco experiment station, Sosa, Korea and 3 locations. The results are summarized as follows. 1. The higher the C. E. P. A concentration was, the more the leaf ripening was accelerated. During the period from 3 to 4 days after treatment, the differences of leaf ripening among levels were prominent. 2. Treatment with C. E. P. A only on the upper surface of the tobacco leaf, accelerated the ripening of that particular part treated, but not apparently the other parts of leaf. 3. Distinctive acceleration of leaf ripening was, obserbed in the fully develope1lower leans, however, the upper leaves were indistinctive. 4. The higher C. E. P. A concentration was, the more the effect of ripening acceleration was. But the yield was reduced over 900ppm because of the low of growth of leaves and the reduced yield was 90% at the 3, 000ppm. So the proper concentration was regarded as 900ppm. 5. In the view point of the days of C. E. P. A ripening acceleration, it was shortened one days at 100 ppm, three days at 300ppm, three days at 450ppm, four days at 900ppm, seven days at 3, 000ppm. 6. In the point of curing process, it was possible that the curing time and fuel was reduced 29% and 45% respectively in the C. E. P. A treatment than the check. 7. Therefore, if it is treated the C. E. P. A at 900ppm in the tobacco cultivation, the quality shall be increased 13.5% and the price shall be increased 12% in the 10 Are. In the point of subsidiary affect, it is possible that the C. E. P. A ripening acceleration is shortened about 7 days at 3, 00ppm and curing time is shortened about 24 hours.