The aim of this present study was to investigate the impact of different seeding rate and nitrogen fertilizing levels on the seed yield and feed value of oats(Avena sativa L.) grown in Gyeongbuk area for two years. The experiment was arranged in split plot design with 3 main plots(100, 130 and 160 kg of seed/ha) and 4 subplots(0, 50, 70 and 90 kg N/ha), with 3 replicates. Heading, flowering, and maturing dates of oats sown in spring 2017, delayed by two days compared to that of spring 2016, and the plant height of spring 2017 were significantly shorter than that of spring 2016(18.1 ~ 23.4 cm). In addition, the highest number of stems and number of panicles according to different seeding rate and nitrogen fertilizing levels were achieved with the seeding rate of 160 kg/ha and 90 kg of N/ha in 2016 and 2017, respectively. In case of seed yield as affected by different seeding rate, the highest seed yield was achieved with a seeding rate of 130 kg/ha(p<0.05), and based on nitrogen fertilizing levels, the highest yield was obtained in 50 kg of N/ha compared to others. The crude fiber(CF), neutral detergent fiber(NDF) and total digestible nutrients(TDN) of oats cultivated and harvested in spring 2016 and 2017 according to different sowing rate were the highest in the seeding rate of 130 kg/ha. The crude protein(CP) content and total digestible nutrients(TDN) of 2016-2017 as influenced by nitrogen fertilizer levels were the highest in the nitrogen fertilizer level of 90 and 50 kg N/ha, respectively. In conclusion, the proper seeding rate and the optimal nitrogen fertilizing level in Gyeongju, Gyeongbuk province were considered to be the most appropriate in 130 kg/ha and 50 kg of N/ha, respectively.

To establish the recycling system of animal manure(AM) for environmental preservation and improve the utilization of AM, this study was to investigate the effects of the types and nitrogen application rate of AM on herbage productivity, efficiency of nitr

혼파된 영년채초지에서의 예취빈도와 질소시비가 뿌리의 수량과 심층분포에 미치는 영향에 대하여 연구된 결과는 다음과 같다. 1. 조사된 식생구조에서의 뿌리의 분포는 모든 처리구에서 상층 20cm까지에 그 대부분이 존재하였다. 2. 뿌리의 양은 우점종에 관계없이 모두 높았지만 Arrhenatherum elatius 우점초지에서 가장 낮았고 Alopecurns pratensis우점초지에서 가장 높았다. 3.뿌리의 양은 예취빈도간에는 그 차이가 없었으나 적당한

This experiment was conducted to evaluate the effect of cutting frequency and nitrogen fertilization on (NO3-N leaching losses under 12 years mixture permanent meadow, The results of this study were summarized as follows: 1. There was no difference in

남부 답다모작지대에 있어서 수도적정시비량을 구명하기 위하여 질소시비량을 10a당 10, 15, 20, 25kg의 4수준, 이앙기를 5월 20일, 6월 5일, 6월 20일, 7월 5일의 4시기로하여 수량구성요소및 수량의 변이를 검토하여 다음과 같은 결과를 얻었다. 1. 난지 도작에 있어서 질소의 적정시비량은 서광벼는 20kg/10a, 동진벼는 15kg/10a 수준이었다. 2. 질소의 적정시비량에서 단위면적당 수수와 등숙률 사이에는 부의 유의 상관관계(서광벼 r =-0.6023＊ 동진벼 r =-0.8581＊＊)가 인정되었다. 3. 시비수준에 따른 1,2차 지경 및 영화의 퇴화율은 서광벼는 질소 25kg/10a 에서, 동진벼는 질소 20kg/10a 이상의 수준에서 컸다. 4. 등숙비율에 있어서 서광벼는 질소증비에 따른 변이가 크지 않았으나 동진벼는 증비에 따른 급격한 등숙비율의 저하 경향을 보여 수량감소의 주요인이 되었다.