PRINT ISSN 2285-5718, CD-ROM ISSN 2285-5726, ISSN ONLINE 2286-0126, ISSN-L 2285-5718


Published in AgroLife Scientific Journal, Volume 6, Number 2
Written by Veronica TĂNASE, Nicoleta VRÎNCEANU, Mihaela PREDA, Dumitru Marian MOTELICA

Composting municipal sludge is an ecological and economic efficient technology to exploit such residual organic products in order to increase agricultural yields and soil fertility. This study aimed to determine the improve of some chemical characteristics of soil after fertilization with composted sewage sludge associated or not with mineral fertilization after two years of application and the yields recorded after the first two years of treatment. The experimental field was organized using subdivided parcels method, studying two gradients: organic and mineral fertilization. Before application on land as organic fertilizer, chemical characteristics of compost were analyzed in laboratory. Also it was made a characterization of soil from experimental field before and after compost fertilization. In the first year of experimentation the highest soybean yield were recorded in variants with maximum dose of mineral fertilizer. The highest maize yield was obtained in the most intensive fertilization treatment of our experiment which consist of doses of compost equivalent to a nitrogen rate of 400 kg/ ha and mineral fertilization (N100P100). In the second year of experimentation we recorded significant increase yields at oat crops in variants with fertilization in maximum doses. Related to soybean crops, in this second year, the values of yields were increased only in organic or mineral fertilization, but not in association of them. Fertilizing with sewage sludge does not replace the chemical fertilization, but is used in association with it in order to satisfy the necessity of crops for the nutrients.

[Read full article] [Citation]

The publisher is not responsible for the opinions published in the Volume. They represent the authors’ point of view.

© 2019 AgroLife Scientific Journal. All Rights Reserved. To be cited: AgroLife Scientific Journal.

Powered by INTELIDEV