The Remanent Effect of Compost Made From Sewage Sludge Used as Fertilizer on Forage Plants

In the platform of applied research of Ecology and the Environment protection discipline from the Animal Science and Biotechnologies Faculty Timisoara was investigated during 3 years the remanent effect of compost made from sewage sludge used as organic fertilizer on forage plants. The experiment was done in vegetation pots, the experimental block being organized on 15 variants in 3 repetitions. Was used a forage plants mixture in equal parts of Lolium perenne and Trifolium repens, being studied the germination, growth and development of plants. In this paper are presented the results from the second year of study, the green mass productions at three harvestings. The obtained results show a good production of green mass in the second year, the productions being directly proportional to the amount of compost administered in the first year as fertilizer. Compared to the first year, was obtained a higher amount of green mass production in the case of fertilization with quantities higher than 100 t compost / ha.