• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.357-357
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• 2017

The combined application of oil cake and rice bran into the soil surface was found useful for weed control in our previous pot study. The present study was undertaken to evaluate the performance of white clover (Trifolium repens L.) while incorporated in the paddy field and effects of combined fertilizer on weed control and rice yield. A plot was divided into two parts i.e. white clover incorporated and not incorporated. The nitrogen content of the incorporated white clover was $12.5gm^{-2}$. Chemical fertilizer and combined fertilizer plots were compared with non-fertilizer conditions. The mixed ratio of combined fertilizer was oil cake 1.35 and rice bran 1.0. Combined fertilizer was applied to the soil surface, and chemical fertilizer was mixed in the soil. Nitrogen application rate was $8gm^{-2}$ for any fertilizer. The weed numbers were significantly reduced in the white clover plot irrespective of application condition both at heading and harvest time. Also, weed control ability was improved by the use of combined fertilizer. In the not incorporated plot, the number of weeds was suppressed about 90% by applying combined fertilizer. The rice yield was markedly increased by the incorporation with white clover under all fertilization conditions. Contribution rates of increased rice yield by white clover and combined fertilizer were about 55% and about 25%, respectively. The rice yield was increased by the incorporation with white clover, and the number of weeds remarkably decreased as well. Also, these effects were improved due to combined application of oil cake and rice bran.

• 한국축산시설환경학회지
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• 제13권2호
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• pp.139-146
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• 2007

본 연구는 가축액상분뇨의 비료성분 불균형을 화학비료로 조정하여 작물양분의 최적화에 의한 벼의 생육과 품질향상을 검토하기 위하여 수행되었다. 양돈분뇨발효액비와 화학비료를 혼합하여 조제한 맞춤비료(LCSC)의 시용이 벼의 생육특성, 수량, 수량구성요소, 쌀 품질에 미치는 영향을 조사하였다. 처리구는 맞춤비료(LCSC) 기비 50% + 화학비료 50% 추비구, LCSC 기비 75% + 화학비료 25% 시용구, 100% LCSC 시용구, 100% 양돈 분뇨발효액비 시용구(LM)를 두었다. 또한 대조구로 화학비료 시용구를 두었다. 1. 초장은 생육초기에 화학비료 시용구와 LCSC와 화학비료 혼합 시용구에서 가장 큰 것으로 나타났다. 생육후기의 초장은 LM 시용구가 가장 적었다. 분얼수의 경우도 화학비료 시용구와 LCSC 시용구가 LM 시용구 보다 더 많았다. 엽록소 함량은 생육초기 화학비료 및 LCSC 시용구에서 LM 시용구 보다 높았으나 생육후기에는 LM 처리구와 LCSC 100% 처리구 사이에 유의한 차이가 없었다. 2. 수량구성요소에 있어서 주당수수는 화학비료구와 LCSC 기비 + 화학비료 추비 시용구에서 가장 많은 것으로 나타났다. 수당립수는 화학비료 시용구에서 가장 많았으나 처리간에 유의한 차이를 나타내지 않았다. 천립중과 등숙률은 처리구 사이에 유의한 차이를 나타내지 않았다. 3. 벼의 정조수량은 LCSC + 화학비료 혼합 시용구에서 681 kg/10a로서 가장 높았다. LCSC 100% 기비시용구의 정조수량은 화학비료 대비 9% 감수되었으며, LM 시용구는 화학비료 시용구 대비 7% 감수되었다. 4. 현미의 미질은 LM 시용구와 LCSC 100% 기비 시용구에서 화학비료 시용구에 비하여 유의성 있게 높게 나타났다. 현미의 단백질 함량은 화학비료 시용구에서 LM 시용구와 LCSC 100% 기비 시용구보다 유의성 있게 높았다. 따라서 쌀 품질향상에 적절한 양의 LCSC와 화학비료 혼합시용이 효과가 있는 것으로 나타났다.

• 유기물자원화
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• 제10권4호
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• pp.81-85
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• 2002

유박을 원료로 한 유기질비료, 미생물제제 및 해초추출물의 시용효과를 규명하기 위하여 엇갈이배추를 공시작물로 시설하우스에서 재배하면서 생육 및 수량을 조사하였다. 유기질비료 처리구에 미생물제제를 혼용한 처리구에서 수량이 가장 좋았으며, 과량 처리구에서도 비해가 발생하지 않았다. 해초추출물의 엽면시비와 관주에 의한 수량증대는 관주처리구가 다소 높았으며, 또한 미생물제제의 경우 액상보다 분말처리구에서 수량이 높게 나타났다. 즉, 미생물제제의 형태에 있어서는 분말이 해초추출물의 시용방법에 있어서는 관주에 의해 생육이 안정되었으며, 수량도 높은 경향을 보였다. 결론적으로 유기질비료의 2배 과량처리구에서 비해가 발생되지 않았으며, 미생물제제와 해초추출물의 시용으로 생육 및 수량이 향상되었다.

• 한국기후변화학회지
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• 제8권3호
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• pp.187-199
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• 2017

We attempted to assess the impact of climate change on rice yields in Cambodia and to investigate adaptation strategies to climate change including more drastically shifting the planting dates and considering more fertilizer application levels. The potential yields of two wet season rice cultivars (Sen Pidao and Phka Rumduol) under two climate change scenarios in Cambodia were simulated using the CERES-Rice model. Field experiments conducted at the Cambodian Agricultural Research and Development Institute (CARDI), in 2010, 2011, and 2013 and climate variables from the HadGEM3-RA model were collected for this study. Compared with the baseline (1991-2000), yields of Sen Pidao rice will decrease under climate change and yields of Phka Rumduol rice could increase or decrease depending on fertilizer rates and the periods (2040s, 2050s, and 2080s). In general, the variations in the simulated effects of climate change on yields were more sensitive at fertilizer N100-N200 and less sensitive at fertilizer N0-N50. It is likely that forward shifts of planting date from the baseline plating date for the two cultivars in the future can be more benefitted than backward shifts. It is concluded that the CERES-Rice model can be useful to provide efficacious adaptation strategies in Cambodia.

• 한국토양비료학회지
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• 제42권3호
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• pp.152-159
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• 2009

혼합유기질비료 시용 후 벼 재배시 무기태질소 함 량, 질소이용율, 수량 등을 조사하여 질소 화학비료 대체 가능성을 검토코자, 화학비료 3요소구, 혼합유기질비료 0, 100, 150% 시용구 등 5처리를 두어 2006년도에 시험을 수행한 결과는 다음과 같다. 혼합유기질비료 100% 시용구 토양 중 $NH_4-N$ 함량은 대조구에 비해 많았으며 표면수에서도 같은 경향이었다. 시험후 토양 중 Av. $P_2O_5$ 함량은 대조구에 비해 혼합유기질비료 100% 시용구에서 많았으나 Ex. K 함량은 적었다. 수도체 중 질소이용율은 혼합유기질비료 100% 시용구가 대조구에 비해 높아 질소 화학비료 대체 가능성이 있었다. 이앙 후 30일, 60일에서 경수는 혼합유기질비료 100% 시용구가 대조구 보다 많았다. 혼합유기질비료 중 질소 함량과 단백질 함량과는 정의 상관, 식미치와는 고도의 부의 상관, 완전립 비율과는 부의 상관이 있었다. 혼합유기질 비료 100% 시용구의 쌀 수량은 대조구 $4,892kg\;ha^{-1}$에 비해 4% 증가하였다. 벼 재배시 대조구의 쌀 수량과 대등한 혼합유기질비료의 시용량은 [질소 토양검정시비량 ${\div}$ 혼합유기질비료질소함량 $(g\;kg^{-1})/1,000{\times}0.93)/1,000$]으로 산출되었다.

• 한국토양비료학회지
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• 제33권6호
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• pp.393-397
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• 2000

퇴비의 시용량에 따른 사과의 수량과 토양화학성에 미치는 영향을 조사한 결과는 다음과 같았다. 사과원에 퇴비시용량의 증가에 의해 토양중의 인산함량 및 치환성 양이온의 함량이 증가하였으나, 유기물은 거의 변화가 없었다. 퇴비의 시용량이 증가할수록 사과의 수량은 증가하였으나, 경도 및 당도의 차이는 없었다. 화학비료를 감비처리하고 퇴비의 시용량을 높인 결과 퇴비의 시용량이 증가함에 따라 토양 중 유기물 및 Ca의 함량은 증가하였다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.225-225
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• 2017

This study is to investigate the effect of split application and adapted fertilization application cultivation in stable medicinal herbs production of Acorus graminens S. And it accomplished one's purpose to GAP guide manual established standard method of cultivation technology, contribute to the enlargement of farm's income. Method of fertilization application were conducted under five condition compose to standard application(N-P-K-Compost: fermented mixed oil cake fertilizer applied at $4-2-6-300kg.10a^{-1}$, twofold application(N-P-K-Compost applied at $8-4-12-600kg.10a^{-1}$) cultivation. Compost (fermented mixed oil cake fertilizer) and fused phosphate applied at 100% of basal fertilizer in April 14. The split application level of standard application and twofold application(N-K) applied at 100%, 50%, 40% of basal fertilizer in April 14, 50% and 40% of top dressing were three times application (N-K) in June 1, July 15, August 15, 25% and 20% respectively. Transplanting with Naju varieties in May 12 by growing pot seedling for 40 days in 2015. Planting density were spaced 30 cm apart in rows 30 cm apart with black vinyl mulching on open cultivation. Plot design randomized block 3 repetition. Therefore, growth characteristics by 50% and 40% of top dressing were three times application (N-K) compared to standard application and twofold application (N-K) applied at 100% basal fertilizer, aerial part as a result were so many such amount of growth as number of leaf per plant, etc., Length of diameter and main root of subterranean part growth increment rising highest. Dried roots yields treated standard fertilizer 100% application($250kg.10a^{-1}$) compared to 100% from twofold application (N-K) applied at 50% basal fertilizer, 50% and 40% of top dressing were three times application increased by 16%, 20%. respectively.

• 한국토양비료학회지
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• 제49권6호
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• pp.682-688
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• 2016

Food waste has recognized one of useful sources for potentially agricultural application to supply organic matter and nutrients in arable soil. However, there was little information on application of food waste compost related to the maturity and NaCl content in arable soil. This study evaluated the effect of food waste compost application on yield and fertility in soil under flooding and upland condition. The yields in rice and pepper cultivation decreased with increasing the rate of food waste compost application in soil (p<0.05). Maximum yields of rice ($49.0g\;plant^{-1}$) and pepper ($204g\;plant^{-1}$) were shown at 10 and $30Mg\;ha^{-1}$ of food waste compost application, respectively. The N, P, and K contents in grain and plant residues increased by the application of food waste compost, there was no difference on Na/K ratio in plant tissue among the treatments. Application of food waste compost resulted in the increase of pH, EC, TC, available P contents in soil after crop harvest, especially, which was shown the increase of the CEC and exchangeable sodium percentage (ESP) contents in irrespective of water condition. In conclusion, application of food waste compost in soil was effective on the supply of the organic matter and nutrient. However, it might need caution to apply food waste compost for sustainable productivity in arable soil because of potential Na accumulation.

• 한국토양비료학회지
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• 제46권6호
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• pp.487-493
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• 2013

The effects of long-term fertilization on soil biological properties and microbial community structure in the plough layer in a rice paddy soil in southern Korea were investigated in relation to the continuous application of chemical fertilizers (NPK), straw based compost (Compost), combination these two (NPK + Compost) for last 40 years. No fertilization plot (Control) was installed for comparison. Though fertilization significantly improved rice productivity over control, the long-term fertilization of NPK and compost combination was more effective on increasing rice productivity and soil nutrient status than single application of compost or chemical fertilizer. All fertilization treatments had shown significant improvement in soil microbial properties, however, continuous compost fertilization markedly increased soil enzyme and microbial activities as compared to sole chemical fertilization. Results of microbial community structure, evaluated by EL-FAME (ester-linked fatty acid methyl esters) method, revealed big difference among Control, NPK, and Compost. However, both Compost and Compost+NPK treatments belonged to the same cluster after statistical analysis. The combined application of chemical fertilizer and organic amendments could be more rational strategy to improve soil nutrient status and promote soil microbial communities than the single chemical fertilizer or compost application.

• 한국유기농업학회지
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• 제3권1호
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• pp.71-78
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• 1994

This experiment was conducted to investigate the effects of mixed application of earthworm cast and N-fertilizer on dry matter(DM) yield in orchardgrass(Dactylis glomerate L.). Experimental plot were designed by a randomized block design with 3 replications of six different treatments-Control(0:0), 100% earthworm cast(0:100), 3 levels of mixed application(25:75:, 50:50, 75:25) of earthworm cast and N-fertilizer, and 100% N-fertilizer(100:0)based on content (%) of nitrogen. The experiment was carried out from March to October, 1993, on the forage experimental field of Kon-Kuk Univ. in Seoul. The results obtained are summarized as follows: 1. Annual dry matter yield was significantly increased according to increasing of N-fertilizer 2. Dry matter yield for each treatment as cutting time was passing was decreased. However, dry matter yield was slightly increased at 75%, 50%, and 25% mixed application of earthworm cast at the third cutting time than the second cutting time(p<0.05). 3. concerning each treatment per cutting time, dry matter yield was higher at 100% N fertilizer than the other treatments at the first, second, and fourth cutting time except the third cutting time only(p<0.05). And according to decreasing of mixing ratio of N fertilizer, dry matter yield was decreased, too. 4. Dry matter yield of 100% earthworm cast was significantly higher than control at the fourth cutting time(p<0.05).