The effect of different doses of NPK fertilizers on the quality of rapeseed seeds

Abstract

Rapeseed (Brassica napus L) is widely used in the production of oil, animal feed and biodiesel. Quality of oilseed rape depends on the genotype meteorological conditions and crop management. It is important to provide sufficient quantities of soil nutrients before planting (basal fertilization), so that young plants may form a leaf rosette and prepare for a period of low winter temperature. This research was performed on four commercial genotypes of rapeseed (Banaćanka, Slavica, Express and Valeska) produced in the growing season 2008-2009. The following parameters were determined: germination, 1000-seed weight, oil content and fatty acids. Seed germination, 1000-seed weight and oil content depended on the genotype, but not on the applied NPK dose. The fatty acids content depended on the genotype and the amount of fertilizer applied.

Uljana repica (Brassica napus L) nalazi veliku primenu u proizvodnji ulja ishrani domaćih životinja i proizvodnji biodizela. Kvalitet semena uljane repice zavisi od genotipa, meteoroloških i zemljišnih uslova, đubrenja i ostalih agrotehničkih mera. Veoma je važno da se zemljište obezbedi dovoljnim količinama hraniva pred setvu (osnovno đubrenje), kako bi mlade biljke mogle da formiraju lisnu rozetu i pripreme se za period niskih zimskih temperatura. Ispitivanja su izvedena sa četiri komercijalne sorte uljane repice (Banaćanka, Slavica, Express i Valeska) proizvedene u vegetacionoj sezoni 2008-2009. Ispitivani su sledeći parametri: klijavost semena, masa 1000 semena, sadržaj ulja i masnih kiselina. Klijavost semena, masa 1000 semena i sadržaj ulja zavisio je od sorte, ali ne i od primenjene doze NPK đubriva. Sadržaj masnih kiselina zavisio je i od sorte i od količine primenjene doze đubriva.