Productivity of spring rapeseed on leached chernozem in conditions of unsteady moistening in Krasnodar region

The influence of planting dates, seeds planting rates as well as different dozes of mineral fertilizers on productivity of spring rapeseed variety Galant were studied at Armavirskaya experimental station in 2004-2006. It was determined that sowing after 20 March with seeds rate 2 million seeds/ha provides a maximal yield of seeds. In trials with using of mineral fertilizers the maximal increase of seed yield was after applying of N60P60K60 under presowing soil treatment and N60 as foliar application in comparison with control; and the average extra yield for three years was 0.46 t/ha.