The Behavior of Some Oilseed Rape Cultivars During 2009 Year in Corabia Zone Conditions

Abstract

SUMMARY The present paper presents the influence of the pl ant density and the fertilization doses on the winter oilseedrape seed yields. The experime nted fertilizer doses during the three years of the experiment have given significant yield outp uts over the not fertilized variant that range between 610 kg/ha (N60) and 1,012 kg/ha (N90P90K90). The experiment was located in Corabia, District Olt, zone on a typical chernozem and there were researched many objectives with certain oilseedrape and the present paper show the quantification of the effect of some nitrogen, phosphorus and potash doses on the yield in interaction with the plant density with the Alaska variety. The researched factors have bee n the fertilizer doses (the A factor with 4 graduations: a1 ‐ N0P0K0; a2 ‐ N60P0K0; a3 ‐ N60P60K0; a4 ‐ N90P90K90. the plant densities (B factor) have been: b1 ‐ 100 grains/sm; b2 ‐ 200 grains/sm; b3 ‐ 300 grains/sm. The results from the experimental field are present ed in the Tab. 1. Tab. 1 The influence of the seeding density and fertilizat ion on the winter oilseedrape yields, Alaska variet y Density