PEACH PRODUCTIVITY IN DOBROGEA USING LOW POLLUTION SOIL MANAGEMENT SYSTEMS

Soil management systems (SMSs) have a great importance to achieve high quality fruit and yields with low pollution. This is especially the case for peach culture which has a stronger response to these technologies. For this reason some investigations were carried out at the Research Station for Fruit Growing (RSFG) Constanta on a carbonated chernozem soil showing high fertility. The following layout was studied according to the subplot method in 4 replications and 5 trees were used within a replicate plot: factor A - SMS between tree rows (a1 - clean cultivation made by plowings performed in spring and autumn and frequent disking during the growing season, a2 - mowed sod strips 3-m wide by sowings Lolium perenne in spring 2009 and left as mulch in situ), factor B - SMS on the tree rows (b1 - clean cultivation made by herbicide application and b2 mulch application made by mowed sod) and factor C - N amount, kg active substance/ha (c1 - N-30; c2 - N-60; c3 - N-90). After 5 years of study, clean cultivation between tree rows determined significant increases on index of tree productivity (IP) more than 75% versus the mowed sod strips.