• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.84-84
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• 2022

The limit of crop cultivation is moving northward due to the temperature rise by climate change. There is a problem with crop growth if early sowing is performed at a time when the temperature is low. It is difficult to secure crop productivity and cultivation stability due to the low temperature and short cultivation period. Therefore, this study was conducted to analyze the change in growth characteristics and yield of corn for grain when early sowing is performed in central region of South Korea. This experiment was conducted at experimental field of Suwon in 2021. Three varieties of corn for grain such as Kwangpyeongok, Sinhwangok, and Hwangdaok were sown at intervals of 5 days from 20 March to 15 April. The planting density at this time was sown with a row interval of 70 cm and a plant interval of 25 cm. Nitrogen, phosphoric acid, and potassium fertilizers were applied at 17.4 kg, 3.0 kg, and 6.9 kg per 10a, respectively. Phosphoric acid and potassium fertilizers were all applied before sowing and nitrogen fertilizer was applied 50% before sowing and 50% in the fifth leaf period. The corn growth characteristics and yield components were investigated. The seedling establishment rate by sowing date was in the range of 68.5~88.5%, and it showed a difference depending on the variety. The range of days from sowing to tassel and silk emergence by sowing date was 79.9~98.4 and 81.0~98.9 days, respectively. As the sowing date was delayed, the days from sowing to tassel and silk emergence decreased. The growth characteristics and yield of corn by sowing date are as follows. Plant height was the highest at 241.3 cm at the sowing on 25 March, and Stalk diameter was the thickest at 25.6 mm at the sowing on 31 March. The fresh weight per plant was the highest at 728 g at the sowing on 25 March, and the dry weight per plant was the highest at 185 g at the sowing on 31 March. Corn growth characteristics did not show a certain trend depending on the sowing date, and corn growth was more vigorous at the sowing on March 25 and 31 than the others. In the case of ear weight, it was the heaviest with 344 g at the sowing on 25 March, and filled ear length ratio showed a tendency to decrease as the sowing time was delayed. The weight of 100 grains and grain yield per 10a of maize were the highest at 36.0g and 878.7kg/10a, respectively at the sowing on 25 March. Although the growth and yield of corn for grain were good during early sowing in the central region of South Korea, it is necessary to investigate the limit temperature for early sowing of corn by examining the annual variation according to weather conditions.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제2권3호
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• pp.180-187
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• 2021

This study was performed to assess Protaetia brevitarsis larva excrement as an organic fertilizer for corn cultivation. Furthermore, the study investigated insect communities in each treatment. In 2009, the corn growth rate was worst in soil treated with P. brevitarsis larva excrement and in 2010, the corn growth rate was worst in untreated soil. From the outcome of the study, P. brevitarsis larva excrement could be utilized as organic fertilizer for corn cultivation.

• 한국초지조사료학회지
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• 제39권4호
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• pp.195-206
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• 2019

본 연구는 사료용 옥수수 재배현장에서 재배환경과 재배기술의 현장적용 차이에 따른 조사료 생산성의 변화 요인을 분석하기 위하여 2017부터 2018년까지 수행되었다. 우리나라 중부 및 남부지역에서 34개 사료용 옥수수 재배지의 평균 건물수량은 13,510kg/ha이였다. 재배현장에서 사료용 옥수수의 생산성은 재배환경과는 상관이 거의 없고 재배기술과 고도의 상관(p<0.01)이 있는 것으로 나타났다. 재배기술 중에서 파종기술은 조사료 생산성과 고도의 상관이 있었으나, 시비기술은 조사료 생산성과 상관이 거의 없었다. 이상의 연구결과는 사료용 옥수수의 조사료 생산성 향상을 위해서는 재배환경도 중요하지만 재배기술을 적기에 적용하는 것이 더 중요함을 암시하고 있다. 따라서 우리나라 지역별 사료용 옥수수의 생산성 예측기술의 정밀도를 높이기 위해서는 그 지역의 기후환경 및 토양환경은 물론 재배기술의 현장실천 정도를 충분히 고려하여야 할 것으로 사료된다.

• 한국균학회지
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• 제39권3호
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• pp.171-174
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• 2011

적정 영양원을 선발하기 위하여 5가지의 재료(옥수수가루, 옥수수피, 콘코브, 비트펄프, 감자전분)를 이용하여 재배실험을 실시한 결과 혼합배지의 총 질소함량은 옥수수가루 첨가구가 0.45%로 가장 높았다. 혼합배지에 따른 배양율과 재배일수는 옥수수가루 처리구에서 배양율 97%로 가장 좋았고, 재배기간 43일로 가장 짧았다. 그리고 옥수수가루 처리구에서 수량은 122 g/1 kg 봉지, 생물학적효율은 35%로 다른 처리구에 비해 가장 높았다. 자실체 생산량에 관여하는 인자 분석에서는 총 질소함량 (r = 0.95)과 조지방(r = 0.65)으로 나타났다. 이상의 결과 잣버섯 재배는 배지 영양원으로 옥수수가루와 자실체 생산량에 관여하는 인자로 총질소함량으로 판단된다.

• 한국초지조사료학회지
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• 제8권1호
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• pp.47-54
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• 1988

The growth characteristics and yield per unit area of two cultivation systems of forage, corn (Zea mays L.) monoculture and corn-cowpea (Vigna sinesis King) inter-cropping were compared and obtained follow results. 1. The two cultivation systems were not significantly different in leaf length, leaf width and length of internode with harvesting time. 2. The weight of stalk and leaves of a plant were decreased with maturity, while weight of ear was markedly increased. The patterns of relative ratio of each components was essentially same in each cultivation system. In corn monocrop., the percentages of stalk, leaf and ear at final harvesting stage were 22.9, 13.7 and 63.4, respectively. 3. Dry matter yield per unit area (33kgIlOa) of intercropped corn at yellow stage was similar to that of monocropped corn ( l,482.8kg/ 10a vs 1 ,SO8.9kg/ 10a). At ripe stage, however, the DM yield of intercrop. was higher than that of monocrop. (1,810.4kg/lOa vs 1,660.4 kg/ 1 Oa). 4. The same pattern was observed in organic matter yield.

• 생물환경조절학회지
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• 제15권4호
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• pp.396-399
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• 2006

본 연구는 몇 가지 채소(비트, 쑥갓, 상추, 케일, 무, 시금치, 단옥수수, 토마토)의 제염효과를 알아보기 위해 인위적으로 처리한 염류 집적 토양에서 재배후 작물 생육과 토양내 염류 함량을 조사하였다. 채소작물별 초장으로 본 생육은 EC $5dS{\cdot}m^{-1}$의 염류토양에서 상추와 쑥갓의 생육이 가장 크게 억제되었다. EC $5dS{\cdot}m^{-1}$수준의 염류토양에서 EC 잔존율은 토마토, 옥수수, 케일 순으로 낮았으며 비료 성분별 제염효과는 $NO_3의 경우는 옥수수, 토마토, 케일, K는 옥수수, 토마토, 비트, $P_2O_5$는 옥수수와 토마토가 가장 우수하였다. 제염효과는 재배기간이 60일이었던 토마토, 옥수수가 가장 우수하였으나, 염류토양 재배시 수확물의 상품성 저하와 재배시기 주작물 재배시기와 겹치는 문제가 있고, 생체중당 제염효과는 낮았다. 이에 반해 케일은 재배기간 30일로 짧고, 생육억제효과가 적으며, 생체중당 제염효과가 가장 우수하여 제염효과가 있는 전작 작물로 적합하리라 사료된다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.97-97
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• 2022

The yield characteristics of corn for feed by sowing period and the crude protein, crude fat, and coarse flour contents of grain in the harvesting period were compared. The varieties are Kwangpyeongok(KPO), Dapyeongok(DPO) and Pyeonggangok(PGO), and cultivation was tested by the National Food Engineering Department and the Central Crop Department. It was sown at a planting distance of 70×25cm on April 15, June 14, and July 15, 2021, and the amount of fertilizer was applied through soil inspection. For the growth characteristics, plant height, biomass and grain weight were investigated after 50 days of sowing, and general components were analyzed by drying and pulverizing each seed. Compared to the results of sowing in April, which is the right time to sow corn, all three varieties sown on June 14 showed an increase in biomass. In the case of sowing on July 15, the fresh weight of KPO and DPO decreased, and the grain weight of KPO and PGO decreased by 10-20% compared to the sowing in April. There was no significant difference in the crude protein content of grain according to the sowing seasons in April and June, but decreased in the corn sown in July. The crude fat content was highest in KPO sown on June 14 and DPO sown on July 15. Combining the yield and general composition results, it is thought that the cultivation of corn for feed in Suwon in the central part can be sown by mid-June.

• 한국초지조사료학회지
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• 제20권1호
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• pp.31-40
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• 2000

This study was conducted to investigate the effects of application levels of swine manure fermented with sawdust(SMFS) and degree of the slope on productivity of corn, and nitrogen and organic matter runoff in corn cultivation soil. Main plots were consisted of the degree of slope, such as 0, 5 and 10, and the subplots consisted of application levels of SMFS, such as control, 200kgNha and 400kgNha. Lysimeter was constructed with 0.33m width, 3m length and 0.4m height. Dry matter(DM) yields of corn decreased as the slope increased but there was no significant differences between the degree of the slope. DM yields increased significantly as application levels of SMFS increased (pc0.05). DM yields decreased according to continuous cultivation of corn. Total nitrogen(TN) contents of the whole corn decreased as the slope increased(p<0.05). TN content in SMFS treatments was higher than that of non-SMFS treatment but there was no significantly different between SMFS treatments. TN yields decreased significantly as the slope and the application level of SMFS increased(p<0.05). Nitrogen and organic matter yields in the runoff waters increased as the slope and application levels of SMFS increased. The runoff of nitrogen and organic matter was more affected by the increase of the slope than application levels of SMFS. (Key words : Corn, Runoff, Swine manure, Degree of slope, Lysimeter)

• 한국작물학회:학술대회논문집
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• 한국작물학회 2018년도 추계학술대회
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• pp.125-125
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• 2018

• 식물병연구
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• 제23권3호
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• pp.256-261
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• 2017

살충제와 살균제 처리가 옥수수의 독소 오염을 경감시키는데 어떤 역할을 하는지 그 효과를 관찰하였다. 데옥시니발레논(DON)과 제랄레논(ZEN)은 약제처리시 높은 경감효과를 보였으나, 아플라톡신(AFT), 오크라톡신(OTA), 푸모니신(FUM)과 티-2(T-2 toxin)은 약제처리에 의한 효과가 없었다. 약제처리는 Fusarium verticillioides, F. graminearum, 그리고 F. equiseti 같은 병원성 곰팡이의 생장을 억제하는 것으로 나타났다. 옥수수 수확 시기에 따른 곰팡이 독소의 검출량을 비교하였는데, 수확시기가 늦어질수록 DON과 ZEN의 검출량이 증가하였고, Fusarium 속의 병원균 또한 높은 함량으로 검출되었다. 옥수수 종자의 주요 영양성분은 수확 시기에 따라 영향을 받지 않는 것으로 나타났다. 본 연구결과는 옥수수의 곰팡이 오염을 줄이기 위해, 살균제와 살충제의 약제처리가 필요하며 수확시기를 늦추지 않는 것이 중요하다는 것을 밝혀냈다.