Impact of the additional leaf spray fertilization of rape on the yield and its structural elements
2005
Liakas, V., Lithuanian Univ. of Agriculture, Akademija, Kauno reg. (Lithuania) | Malinauskas, D., Lithuanian Univ. of Agriculture, Akademija, Kauno reg. (Lithuania) | Siuliauskas, A., Lithuanian Univ. of Agriculture, Akademija, Kauno reg. (Lithuania)
Over the years 2003-2004, at the experimental station of the Lithuanian University of Agriculture, trials directed toward determining the impact of leaf spray fertilization of winter rape on seed yield and its structural elements were carried out. Leaf spray fertilisation of winter rape at the beginning of the flowering with 25 kg haE-1 of ammonium sulphate improved self-pollination and substantially increased pod number in the plant by 9-19 units. Additional leaf spray fertilization at the end of the flowering (30 kg haE-1 carbamide) or after pods had been formed (50 kg haE-1 carbamide) resulted in the increase of 1000 seed mass in the pods on the lateral stalks. Additional leaf spray fertilization of winter rape at the beginning of flowering had better effect on yield increase than fertilization after pod formation. Three-time fertilization (at the beginning of flowering, at the end of flowering, and after pod formation) resulted in seed yield additions of 1.05-1.09 t per haE-1.
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