오크라의 노지안정기술을 확립하기 위하여, 오크라 생육초기의 보온을 위한 터널식 막덮기 처리가 생육과 수량에 미치는 영향을 정리하면 다음과 같다. 1. 막덮기 재료에 따른 기온변화에서 비닐처리구와 부직포처리구 모두 대조구보다 평균 6.7, 3.3oC 높게 나타났으며, 지온의 평균온도에서도 3.1, 1.0oC 이상 높게 나타났다. 2. 출현율에서는 두 품종 모두 5/4처리구에서 93.3, 77.8%로 높게 나타났으며, 막덮기 재료에 따른 출현율 비교에서는 모두 비닐처리구에서 98.3, 86.7%로 가장 높은 출현율이 나타났고, 출현 80% 소요일수에서도 비닐처리구에서 7.0, 9.7일로 대조구보다 9.7, 17.3일 빠른 출현을 보였다. 3. 초장의 변화는 4/16비닐처리구 > 4/16부직포처리구 > 5/4 비닐처리구 > 4/16대조구 > 5/4부직포처리구 ＞ 5/4대조구 순으로 대체적으로 파종시기가 빠를수록 비닐 막덮기 처리에서 초장이 큰 것으로 나타났다. 4. 과실수량은 4/16비닐처리구 > 4/16부직포처리구 > 5/4비닐처리구 > 4/16대조구 > 5/4부직포처리구 ＞ 5/4대조구 순으로 두 품종 모두 4/16비닐처리구로 가장 적은 수량을 보인 5/4대 조구보다 그린소드 169 kg·10a−1, 베니는 103 kg·10a−1 더 많은 수확량이 나타났다.

Background : Bai Zhu (Atractylodes macrocephala Koidz.) has been generally harvested in 1-2 years after seedstock planting. Recently, seed is used increasingly for planting in spring and rhizome is harvested in 1 year. In 1 year open field culture, seed harvesting rate is low below 30% and supply and demand of seed is so hard. This study was carried out to improve seed harvesting for stable seed supply and demand in Atractylodes macrocephala Methods and Results : Seed of Atractylodes macrocephala Koidzumi was directly sown in open field, under tunnel and rain shielding condition in mid-April. Tunnel was installed from prebloom, mid-september to seed harvesting time, November using 240 ㎝ wires for 120 ㎝ by interval and 20 ㎝ by height in furrow to assure insect pollination and wind fertilization. In rain shielding condition, plant height was highest as 38.2 ㎝ and number of branches, number of nodes, and content of chlorophyll were higher as 7.8 ea/plant, 8.7 ea/plant, and 65.4 respectively compared to open field and under tunnel. Flowering time was earliest as 23rd September in rain shielding condition and in open field and under tunnel was 26th September. There is no blossom rot in rain shielding condition while blossom rot occurrence was highest in open field by 5 in degree. Seed setting rate was highest as 42.0% in tunnel cultivation and seed weight per plant and 1,000 seed weight were highest as 3.7 g/plant and 22.3 g respectively. Total seed yield was higher as 58% and 65% in tunnel and rain shield condition respectively compared to 29 ㎏/10 a of open field. Tunnel cultivation for seed production of Atractylodes macrocephala is more beneficial for lower installation cost. Conclusion : Tunnel cultivation for seed production of Atractylodes macrocephala is more beneficial due to low blossom rot degree by 1, higher 1,000 seed weight and seed setting rate as 19.0 g and 42%, increased seed yield, and lower installation cost.

This study was conducted to determine the effects of high temperature and deficit irrigation on growth and yield of hot pepper. Hot pepper was subjected to four irrigation treatments: fully irrigation (FI), 10, 20, and 30 days deficit irrigation (DI) combination with high temperature treatment. Control plants were grown natural environment and conventional culture methods. The plant height treated with high temperature was significantly higher than that of control plant. At FI combination with high temperature treatment, growth parameters such as stem diameter, leaf area, fresh and dry weight were the greatest. The yield was the greatest (2,036 kg/10a) under control, DI combination with high temperature treatment decreased by approximately 42% compare with FI combination with high temperature treatment. The number of abnormal fruits was approximately 38/plant under control, which was the smallest and that of 30 days DI combination with high temperature was higher 3.3 times compare with control. Flower abscission and calcium deficiency induced by DI treatments, especially those physiological disorder promoted by increasing DI treatments period. Results indicated that yield of hot pepper reduced by DI treatments, these results suggest that the growers should irrigate to proper soil moisture for preventing reduction of total fruit yield.