Effect of SCB Liquid Manure Application in Pear Orchard Managed by Cover Crop System on Tree Growth, Potential Nutrient Recovery and Soil Physicochemical Properties

Abstract

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.

Cutting Frequency and Liquid Manure Application on Green Manure Production of Rye and Hairy Vetch in Pear Orchard

“…Hairy vetch was about 5 times larger in dry weight and 16 times higher in returnable N content than rye. About 50% increase of GMP was reported in rye cover crop by additional fertilization like SCB liquid manure, while hairy vetch showed only 24% increment (Lee et al, 2012). The relatively low dry weight of rye might be attributed to the nutritional status of cover crop related with soil nitrate, although there were other factors such as low temperature in early spring when the rye shows vigorous growth of the year.…”

Effect of Incorporation Levels of Green Manure Crops on Rice Yield and Soil Chemical Properties

“…우리나라는 여러 연구자들에 의해 벼, 고추, 당근, 토마토, 배나무 및 인삼 등의 다양한 작물의 재배하고, 토양의 질적 개선을 위해 녹비작물을 활용한 연구가 꾸준히 보고되고 있다 (Kang et al, 2013;Yang et al, 2011;Kim et al, 2013;Jung et al, 2015;Lee et al, 2012;Seong et al, 2014). 또한, 벼 수확 후 토양 특성은 벼 생육에 필요한 pH, 유기물 등의 함량을 조사하였다.…”

Effect of Mixed Liquid Fertilization on Growth Responses of Red peppers and Soil Chemical Properties

“…최근 유럽, 미국 등지에서는 유기부산물의 처리 시 규제 가 강화되어, 이에 대응하기 위한 다양한 처리 방법이 연구 되고 있으며 (Aracon et al, 2005;Artiola and pepper, 1992;Casado-vela et al, 2007;Dauden and Quilez, 2004;Flores et al, 2009) Lee et al, 2012a;Ro et al, 2008). SCB액비 는 배추, 고추, 토마토, 오이 재배에서 질소질 비료로서 활 용가치가 높았을뿐만 아니라 (Park et al, 2012), 유기물질 의 순환을 원활히 하는 측면에서도 매우 중요하였다 (Lee et al, 2003).…”