녹비작물 재배 시 SCB 액비 혼용이 배나무 생육 및 양분 환원 가능량, 토양 물리화학성에 미치는 영향 (Effect of SCB Liquid Manure Application in Pear Orchard Managed by Cover Crop System on Tree Growth, Potential Nutrient Recovery and Soil Physicochemical Properties)

서지정보

· 발행기관 : 한국토양비료학회
· 수록지 정보 : 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer) / 45권 / 5호 / 779 ~ 786페이지
· 저자명 : 이성은, 박진면, 최동근

초록

Many farmers have been seeking alternatives to chemical fertilizer for successful organic fruit production.
This experiment was carried out to investigate the replaceability of chemical fertilizer by cover crop and slurry composting biofiltration (SCB) liquid manure (LM) application in pear orchard. Three treatments were contained in this experiment; cover crop only and cover crop + LM treatment, and control (chemical fertilizer application). Dry weight and mineral contents of gramineous cover crops were significantly increased in LM-combined treatments than that of leguminous species. Bulk density of soil was decreased in rye + LM and hairy vetch + LM treatments, compared with each cover crop treatment. Soil pH was lowest in fertilizer treatment and soil nitrate content became similar between treatments after rainy season. Available soil phosphate was lower in cover crop and cover crop + LM treatmemts than control, but exchangeable Mg was higher. The mineral content and net assimilation rate of leaves showed no difference between the treatments.
As a result, it is suggested that the application of SCB liquid manure in pear orchard managed by cover crops is desirable to maintain the productivity by improving soil physical properties and potential nutrient recovery.

영어초록

Many farmers have been seeking alternatives to chemical fertilizer for successful organic fruit production.
This experiment was carried out to investigate the replaceability of chemical fertilizer by cover crop and slurry composting biofiltration (SCB) liquid manure (LM) application in pear orchard. Three treatments were contained in this experiment; cover crop only and cover crop + LM treatment, and control (chemical fertilizer application). Dry weight and mineral contents of gramineous cover crops were significantly increased in LM-combined treatments than that of leguminous species. Bulk density of soil was decreased in rye + LM and hairy vetch + LM treatments, compared with each cover crop treatment. Soil pH was lowest in fertilizer treatment and soil nitrate content became similar between treatments after rainy season. Available soil phosphate was lower in cover crop and cover crop + LM treatmemts than control, but exchangeable Mg was higher. The mineral content and net assimilation rate of leaves showed no difference between the treatments.
As a result, it is suggested that the application of SCB liquid manure in pear orchard managed by cover crops is desirable to maintain the productivity by improving soil physical properties and potential nutrient recovery.

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