화산회토 감귤원에서 헤어리베치의 이용 가능성 (Availability of Hairy Vetch as Leguminous Cover Crops in Citrus Orchards of Volcanic Ash Soils)

서지정보

· 발행기관 : 한국유기농업학회
· 수록지 정보 : 한국유기농업학회지 / 25권 / 2호 / 357 ~ 371페이지
· 저자명 : 김유경, 조영윤, 강호준, 김정선, 좌창숙, 송관철

초록

In this study we evaluated the availability of hairy vetch in citrus (Citrus unshiu Marc.) orchards of volcanic ash soils. The responses to increasing seeding rates and various growing conditions such as altitude, accumulated temperature, and soil chemical properties etc, were analyzed by means of the seedling establishment rate, weed occurrence ratio, and shoot biomass yield of hairy vetch. Field experiments were conducted at five citrus orchards by altitude from Sep. 2015 to Apr. 2016 in Jeju Island, Republic of Korea. Hairy vetch used in the study was ‘Cheongpyungbora’, developed by National Institute of Crop Science. Seeding rates of hairy vetch consisted of 30, 60 and 90 kg․ha-1. Results showed that the seedling establishment rates of hairy vetch were quite similar regardless of seeding rates in all fields and weed occurrence ratio at 30, 60 and 90 kg․ha-1 of seeding rates were 11.8, 3.8, and 5.1% (dry wt.), respectively. Both 60 and 90 kg․ha-1 of seeding rates, the weed occurrences were decreased by 96.2% and 94.9%. The nitrogen production of hairy vetch at 30, 60 and 90 kg․ha-1 of seeding rates were 254, 316, and 315 kg․ ha-1, respectively. Both 60 and 90 kg․ha-1 of seeding rates, The nitrogen production were increased by 24%, compared to 30 kg․ha-1 of seeding rate. In these results we were considered that the cost-efficient seeding rate of vetch was 60 kg․ha-1 in citrus orchards. Also, this study showed that the shoot biomass of hairy vetch and various cultivative factors were related and The nitrogen production of hairy vetch had a little bit of positive correlation (R=0.2714) with accumulated temperature and considerable correlations with some items (EC (R=0.4520**) and exchangeable K (R=0.4078**)) of soil chemical properties. Therefore, we were considered that hairy vetch can be used as a leguminous cover crop in citrus orchards, the calculation formula (Y=4.4097X+33.594 (R=0.9547)) can be suggested for nitrogen yield of hairy vetch by using the shoot fresh weight (X).

영어초록

In this study we evaluated the availability of hairy vetch in citrus (Citrus unshiu Marc.) orchards of volcanic ash soils. The responses to increasing seeding rates and various growing conditions such as altitude, accumulated temperature, and soil chemical properties etc, were analyzed by means of the seedling establishment rate, weed occurrence ratio, and shoot biomass yield of hairy vetch. Field experiments were conducted at five citrus orchards by altitude from Sep. 2015 to Apr. 2016 in Jeju Island, Republic of Korea. Hairy vetch used in the study was ‘Cheongpyungbora’, developed by National Institute of Crop Science. Seeding rates of hairy vetch consisted of 30, 60 and 90 kg․ha-1. Results showed that the seedling establishment rates of hairy vetch were quite similar regardless of seeding rates in all fields and weed occurrence ratio at 30, 60 and 90 kg․ha-1 of seeding rates were 11.8, 3.8, and 5.1% (dry wt.), respectively. Both 60 and 90 kg․ha-1 of seeding rates, the weed occurrences were decreased by 96.2% and 94.9%. The nitrogen production of hairy vetch at 30, 60 and 90 kg․ha-1 of seeding rates were 254, 316, and 315 kg․ ha-1, respectively. Both 60 and 90 kg․ha-1 of seeding rates, The nitrogen production were increased by 24%, compared to 30 kg․ha-1 of seeding rate. In these results we were considered that the cost-efficient seeding rate of vetch was 60 kg․ha-1 in citrus orchards. Also, this study showed that the shoot biomass of hairy vetch and various cultivative factors were related and The nitrogen production of hairy vetch had a little bit of positive correlation (R=0.2714) with accumulated temperature and considerable correlations with some items (EC (R=0.4520**) and exchangeable K (R=0.4078**)) of soil chemical properties. Therefore, we were considered that hairy vetch can be used as a leguminous cover crop in citrus orchards, the calculation formula (Y=4.4097X+33.594 (R=0.9547)) can be suggested for nitrogen yield of hairy vetch by using the shoot fresh weight (X).

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