THE INFLUENCE OF MINERAL AND ORGANIC FERTILISATION ON THE AVERAGE DRY MATTER YIELD OF PERMANENT GRASSLAND FROM BANAT (ROMANIA) HILL REGION PUBLISHED

M.COMAN, A.MOISUC, Carmen DURĂU
In this study the objective was to determine the dry matter content of the permanent grasslands under the influence of mineral and organic fertilizers. Experimental field is located on a low hill meadow used as permanent grassland in Fibiş village (Timis County). In the year 2011 the average of the annual rainfall amount is 484 mm. On the season, the precipitation is rich in summer (30.7%), followed by spring (25.1%), fall (23.9%), and winter with less precipitation (20.3%). The experimental field was organized by setting 10 fertilisation variants ( 3 organic,3 mineral and 3 organic – mineral fertilisation variants) and a control non-fertilised variant. Every studied variant has three replicates. The data are collected during 2010-2012 period. The analyzed samples were weighed in the field using a portable electronic. Determination of dry matter was achieved by drying stove method.This method is based on determining the loss of mass by heating at a temperature of 105 o, until constant mass. The protocol was done according to the method AOAOC 93015 (Edition 15/1990). Resides obtained after drying in the oven is the amount of forage dry matter. Statistically speaking, the dry matter yields highly significant positive results in organic fertilization variant fertilized with sheep manure 40 tons per hectare(V3). The organo-mineral fertilization have results very significant at the variant fertilized with 20 t sheep manure / ha + 50 kg / ha N + 50 kg / ha P 2 O 5 + 50 kg / ha K 2 O (V7). The chemical fertilization have results very significant at the variant fertilized with (100 +100) kg/ha N 50 kg / ha P 2 O 5 50 kg/ha 50 kg /ha K 2 O (V10). The dry matter yields need long time researches, to provide sustainable results
dry matter, permanent grasslands, fertilisation
Presentation: oral

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