OKUR, Nur Ege Üniversitesi - Ziraat Fakültesi - Toprak Bilimi ve Bitki Besleme Bölümü, TURKEY , ATES, Fadime TAGEM - Bağcılık Arastırma Enstitüsü, Turkey , KAYIKÇIOĞLU, H. Hüsnü Ege Universitesi - Ziraat Fakultesi - Toprak Bilimi ve Bitki Besleme Bölümü, Turkey , TAKMA, Çiğdem Ege Üniversitesi - Ziraat Fakültesi - Zootekni Bölümü, Turkey

The Effect of Different Soil Management System on C- and Nmineralization in Vineyard Soils During the Transitition to Organic Farming

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Organic grape production in Aegean region is growing every year with demand from EU countries. To obtain organic certification for a product, it should be completed three transitition years for perennial crops growing according to organic production rules. In this study, the effect of some soil management practices on C and N-mineralization in vineyard soils during the transitition from conventional production to organic production was investigated. The results were belong to 2-years transitition process and 2 years organic management. Organic plots received farmyard manure at 1.5 t da^-1 and gren manure (Barley, Hordeum vulgare L., 2.5 kg da^-1 + Vetch, Vicia sativa L., 3.5 kg da^-1 + pod, Vicia faba L., 7.5 kg da^-1) every year. The plots were established as a split plot desing with 3 replication. As soil management practices, different soil tillage systems (mulching, soil ripping and cultivation by plow), natural zeolite (clinoptilolite) and a microbial fertilizer (E2001 EM) were applied. The experiment also included a conventional control plot. In the soil samples taken two times in 2004, 2005, 2006 and 2007, C- and N-mineralization were determined. According to the results; different soil tillage systems significantly affected C- and N-mineralization in soils. However, both natural zeolite and E2001 EM did not influence these processings. Among the soil tillage systems, mulching resulted in higher C- and N-mineralization than did the other system. After 2 years of transition to organic management, C- and N-mineralization increased in mulching plots by 37 % and 52 % in comparision to the conventional system, respectively.

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organic farming , soil cultivation , C and N , mineralization , zeolite , microbial preparation

The Journal Of Ege University Faculty Of Agriculture

618