Promene vrednosti morfoloških osobina soje koje utiču na prinos u postrnoj setvi

A two-year study with two early soybean genotypes was carried out to investigate changes in soybean morphological traits occurring in double cropping. The two sowing dates were mid-April and early July after the barley harvest. According to the average value for the two investigation years and genotypes, soybean plants from the double cropping system had lower plant height (19.69%), plant weight (15.16%), node number (25.47%), pod number and weight (16.7 and 11.12%, respectively), and grain number and weight (13.79 and 9.91%, respectively). In double cropping, grain yield was reduced by 30.16%, while the absolute 1,000-grain weight increased by 4.47%. In relation to individual years and genotypes, it can be observed that the soybean morphological traits and yields were affected not only by a genotype, but to a great extent, by weather conditions as well.U cilju sagledavanja promena morfoloških osobina biljaka soje u postrnoj setvi izvršena su dvogodišnja istraživanja sa dva rana genotipa soje. Setva je vršena u dva roka, polovinom aprila i posle žetve ječma, početkom jula. Biljke soje iz postrne setve u proseku za obe godine istraživanja i oba genotipa, bile su niže (19,69%), imale su manju masu biljaka (15,16%), broj spratova (25,47%), broj i masu mahuna (16,73% i 11,12%) i broj i masu zrna (13,79% i 9,91%). Prinos zrna soje u postrnoj setvi bio je smanjen za 30,16%, dok je apsolutna masa 1000 zrna bila povećana za 4,47%. Ako godine istraživanja ili genotipovi soje se posmatraju pojedinačno, može se videti da na promene vrednosti morfoloških osobina i prinosa pored genotipa, veliki uticaj imaju i vremenske prilike u datoj godini