• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.58 no.3
• /
• pp.253-259
• /
• 2013

This study was conducted to investigate proper mixed cultivation system of potato and succeeding crops (Chinese cabbage and Radish) in 2009. Potato varieties, 'Superior' a middle maturing variety and 'Haryeong' a late maturing variety were used. After potato harvest, succeeding crops of Radish and Chinese cabbage were planted on July 22th in 'Superior' variety plot and Aug. 3rd in 'Haryeong' variety plot. Potato crop was harvested in proper time, after 15, 30, 45 and 60 days. and a suitable potato variety for succeeding crops among 'Superior' and 'Haryeong' was checked. 'Superior' variety was observed to be low rotting, deformity and greening at Chinese cabbage and Radish treatment plot than non-treatment plot. In addition, high yields of potato was maintained in succeeding crop treatments.

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.29 no.2
• /
• pp.121-128
• /
• 2009

A field study was conducted from 2007 to 2008 at Department Rice and Winter Cereal Crop, NICS, RDA, to evaluate the effects of harvest time and cultivar on forage yield and quality. Four whole crop barley cultivars ('Youngyang', 'Wooho', 'Yuyeon' and 'Dami') were selected and harvested on five separate growth stages (heading, and intervals of 1, 2, 3 and 4 weeks after heading) in split plot design with three replications. Results from this experiment indicated significant differences due to harvest time and cultivar in dry matter yield and total digestible nutrients (TDN) yield for forage. The interaction between harvest time and cultivar was not significant. The TDN yield trends were increasing with later harvest time due to higher dry matter yield and TDN content. This experiment provides some interesting results with respects to optimum harvest time, feed value and ultimately yield for the different whole crop barley cultivars.

• 농업기술회보
• /
• v.51 no.3
• /
• pp.32-33
• /
• 2014

여름을 대표하는 수박이 이제는 시설재배 기술의 발전으로 사시사철 맛볼 수 있는 친근한 채소가 되었다. 지역별로 아주 심기와 수정, 당도가 향상시키기, 수확 등의 작업이 한창이다. 이번 달에는 아주 심은 후 관리기술에 대해서 알아본다.

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.36 no.4
• /
• pp.287-292
• /
• 2016

The objective of this study was to determine the effect of harvesting time of rice on growth characteristics and dry matter yields of Italian ryegrass (Lolium multiflorum Lam., IRG) 'Kowinearly' after seeding them in paddy field. Experiments were performed in National Institute of Animal Science, RDA (Cheonan, Choongcheongnam-do province of Korea) for four years (2011~2014). Italian ryegrass variety 'Kowinearly' was seeded at experimental paddy fields before rice harvest in late September. Rice were harvested at 10, 20, and 30 days after seeding of IRG. As the harvest time of rice became later, the number of tillering before winter was reduced and IRG plant length before winter was shorter. The dry matter yield of IRG was also reduced. When rice were harvested at 20 days and 30 days after sowing of IRG compared to the rice harvested in autumn at 10 days after sowing of IRG, the number of tillering for IRG before winter was decreased by an average of 19% and 40%, respectively. The winter survival ratio of IRG was decreased by an average of 13% and 19%, respectively. Their dry matter yields were also reduced by an average of 8% and 19%, respectively. The heading date was different from each other in three years. The plant length at the time of IRG harvest in the spring was not significantly different among treatment groups. Taken together, our results suggest that when Italian ryegrass is grown in paddy fields by the method of 'seeding of IRG before rice harvest', rice should be harvested as soon as possible after sowing of IRG 'Kowinearly' in the autumn to increase forage productivity.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.61 no.4
• /
• pp.277-282
• /
• 2016

The consumption of waxy corn is steadily increasing in Korea. Waxy corn is harvested before it reaches full maturity and consumed immediately or follwing cold storage. Glutinous and sweet kernels are preferred due to their high palatability. The kernel properties can change rapidly following harvest, and, therefore, optimal conditions to maintain the kernel quality of corn should be identified. In addition, the timing of harvest of waxy corn ear should be also determined for optimal marketable corn production. From 10 days after silking (DAS) to25 DAS. fresh ear weight and single kernel weight rapidly increased from 78.3 g and 1.13 g, respectively, to 224.9 and 3.61 g, respectively. However, by 30 DAS both fresh and single kernel weight decreased by 10.6% and 6.1%, respectively. Kernel hardness significantly increased up to 25 DAS, and a further slight increase in kernel hardness was observed at 30 DAS. Total sugar content in kernel decreased from 12.5% at 10 DAS to 3.5% at 35 DAS, which was the result of the conversion of sugars to starch during ear development. Crude protein content in kernel did not vary significantly in comparison to kernel hardness. During storage of ear, kernel hardness increased from $726g\;cm^{-2}$ at harvest to $1894g\;cm^{-2}$ following 28 days of storage at a low temperature ($0^{\circ}C$). Kernel hardness increased 2.5 fold from 15 DAS to 30 DAS. Soluble protein level in kernel increased until 10 DAS, following which a slight decrease was observed. The soluble protein content decreased from 1.85% at 5 DAS to 1.45% at 35 DAS. Total sugar content in kernel decreased regardless of storage temperature; however, the rate of reduction was lower at $0^{\circ}C$ than that observed following storage at $4^{\circ}C$ and $10^{\circ}C$. The rate of reduction in kernel moisture content was also lower at $0^{\circ}C$ than that observed at $4^{\circ}C$ and $10^{\circ}C$.

• Journal of Bio-Environment Control
• /
• v.27 no.4
• /
• pp.349-355
• /
• 2018

This study was aimed at predicting the yield of paprika (Capsicum annuum L.) through analyzing the growth characteristics, yield pattern and greenhouse environment. In the greenhouse of the Gyeongnam area (667 m above sea level), the red paprika 'Cupra' and the yellow paprika 'Fiesta' were grown from July 5, 2016 to July 15, 2017. The planting density was $3.66plants/m^2$ and attracted 2 stems. During the cultivation period, the average external radiation of the glasshouse was $14.36MJ/m^2/day$ and the internal average temperature was controlled as $20.1^{\circ}C$. After 42 weeks of planting, the growth rate of 'Cupra' was 7.3 cm/week and that of 'Fiesta' was 6.9 cm/week. The first fruit setting of 'Cupra' appeared at 1.0th node and 'Fiesta' at 2.7th node. The first harvest of 'Fiesta' was 11 weeks after planting and 'Fiesta' was 14 weeks. Comparing the yield per 10 a until the end of the cultivation in July, 'Fiesta' was 19,307 kg, which was 2.4% higher than that of 'Cupra'. And the fruit weight ratio of over 200 g of 'Cupra' was 27.7% which was 7.7% higher than that of 'Fiesta'. The average required days to harvest after fruit setting of 'Cupra' was 72.6 days and 'Fiesta' was 63.8 days. According to the relationship between the average required days to harvest and the cumulative radiation (during from fruit setting to harvest), the more radiation increases the less required days to harvest increases after February. In terms of yield, 'Cupra' increased in yield as the cumulative radiation increased, while 'Fiesta' showed an irregular pattern. Cumulative radiation from fruit setting to harvest was negatively correlated with required days to harvest after February in both cultivars. But in relation to yield, there were difference between 'Cupra' and 'Fiesta'.

• Journal of Sericultural and Entomological Science
• /
• v.16 no.1
• /
• pp.49-55
• /
• 1974

Studies on the harvest methods for the branch-rearing in autumn are as follows. (1) It turned out to be the best method in the early autumn to thin one to two of the normal branches or the dwarf ones, or pick off some of leaves for the yields, according to the rearing scale. (2) For the rearing of the silkworm larvae at 4th instar, it is recommendable to apply one of the following harvest methods, such as the thinning of dwarf branches, the thinning of some branches, intermediate cutting, and the pick-of of the leaves at low part of mulberry in the regards io the quality of leaves and the labour conditions, and no effects on the harvest. (3) For the rearing of the larvae at 5th instar, it is most practical to adapt one of the yield methods which can produce good harvest with less labours. That is, the pruning. of the middle branches should be gradually made from a part of the mulberry fold. (4) When it is carried out to pick of the leaves on the branches which was left after the middle-pruning harvest in autumn or late, easy and less labours' harvest method of rough picking may be applied in the both of the mulberry pruned in summer or autumn.

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.14 no.3
• /
• pp.247-256
• /
• 1994

This experiment was carried out to determine harvesting date and cultivar effects on growth characteristics, forage yield and quality of spring sown oats(Avena surivu L.) at the forage experimental field, College of Agricultural and Life Sciences, Swul National University, Suwwn from March 22 to June 20, 1993. The experiment was arranged in a split plot design with three replications. The main plots consisted of the harvesting dates such as early(24 May), mid(8 June) and late(20 June). The subplots consisted of different maturities of oat cultivm such as Speed oat, Cayuse, Foothill, Sv841034 and Magnum.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
• /
• v.6 no.12
• /
• pp.83-89
• /
• 1985

겨울동안 딸기재배의 작형은 딸기가 휴면기간이 매우 짧으면서 꽃눈분화가 조속히 이루어지는 품종을 선택하여 재배하는데 일반적으로 촉성, 반촉성 및 억제재배 등이 있으며 촉성재배는 비닐이나 섬피 등 보온을 실시하여 11월$\~$1월부터 2$\~$3월에 걸쳐서 수확을 목적으로 재배하는 작형이다. 반촉성재배는 촉성재배보다 보온을 늦게 시작하여 촉성재배의 수확말기인 3$\~$4월에 수확하여 출하하는 재배형이다. 억제재배에서와 같이 보통육묘를 실시해서 월동시킨 다음 봄에 생육이 시작하기 전인 2월 하순경에 모를 굴취하여 0$^{\circ}C$내외의 환경하에 장기간 저장하여 강제휴면을 시켰다가 8$\~$9월에 정식한 후 10$\~$11월경에 수확하는 작형이다. 이들 기본작형을 변형시켜 다시 세분화된 재배형으로 나눌 수도 있다. 본란에서는 현재 수익성이 높고 비교적 안전한 딸기 반촉성재배에 대하여 설명하고자 한다.

• Proceedings of the Korean Society of Grassland Science Conference
• /
• 1999.06a
• /
• pp.98-98
• /
• 1999

본 시험은 호밀 라운드베일 사일리지 제조시 수확시 숙기 및 비닐색이 사일리지 품질에 미치는 영향을 비교하기 위하여 수행되었다. 저장 2개월 후의 일반조성분 함량은 수확시 숙기간에는 유의성이 있었으나 비닐 색간에는 유의적인 차이를 보이지 않았다. 백색비닐을 사용한 경우 IVDMD가 흑색이나 녹색을 사용한 경우보다 높았지만 통계적 유의성은 없었다. pH는 백색이 유의적으로 낮게 나타났으며 흑색과 녹색 비닐간에는 차이가 없었다.(중략)