Effect of Fertilizer and Soil Compactness Interaction

Under favorable soil conditions such as existence of easily destructibleorganic compounds, balanced heat and moisture, adequate ventilation andabundant nutrients, organic materials are mineralized. once mineralizingoccurs, mineral elements like p, s, ca, mg, k and other cations are released. arelated study was conducted to determine the effect of seven organic fertilizers(leaf mold (lm), rice husk (rh), manure, spent mushroom compost(smc), mixture of lm, rh and smc (m1), mixture of lm, rh and manure(m2) with the ratio of 1:1:1 and control) at three levels of soil compactness(roller weight of 36, 56 and 76 kg) on n, p, k content of soil and aril parts ofsport lawn. treatments were applied as strip plot design in three replications,in research farm of gorgan university of agricultural sciences and naturalresources during 2008-2009. according to the results of this study, in all threecompactness levels, treatments containing manure and smc showed more nand k in contrast to control treatment. the most content of soil p in each compactnesslevel was observed in plots fertilized with manure. the manure andcontrol treatments showed the most and the least amount of plant nitrogen inall compactness treatments respectively. the manure and smc treatments andalso treatments containing these organic matters increased plant phosphoruscontent in compare with rh, lm and control treatments. also in three compactness,manure and smc treatments showed more plant potassium incontrast to control.