An analysis of 2007 soybean variety trials

Abstract

The 2007 large-plot trials included 18 soybean genotypes from different maturity groups (0, I, II and III). Trials were located in all soybean-growing regions of Serbia and Republic of Srpska. As the 2007 weather conditions were not favorable for soybean, the yields in the trials were much lower than those obtained in previous years. Insufficient rainfall negatively affected soybean yield performance, especially when it was combined with high air temperatures in the period July - August. Some cultivars exhibit a certain level of drought tolerance. They performed satisfactorily in most location in spite of the unsuitable conditions. The late cultivar Mima, with the highest average yield in the trials, should be recommended for growing in arid regions. The cultivars Sava, Tea and Zvezda were best performers in maturity group I, the cultivars Bečejka, Valjevka and Alisa in maturity group 0. The considerable variability in protein and oil contents in soybean grain was found to depend on location and cultivar. .

U mreži makroogleda 2007. testirano je 18 genotipova soje različitih grupa zrenja (0, I, II i III). Ogledi su locirani u svim glavnim regionima gajenja ove industrijske biljke u Srbiji i Republici Srpskoj. Vremenski uslovi nisu bili naklonjeni soji, pa su prinosi u ogledima znatno niži nego prethodnih nekoliko godina. Nedostatak padavina, praćen visokom temperaturom vazduha, negativno je uticao na usev naročito tokom letnjih meseci (jul - avgust). Zapaženo je da pojedine sorte ispoljavaju izvestan nivo tolerantnosti prema suši, pa su i u nepovoljnim uslovima ostvarile zadovoljavajuće prinose u većini lokaliteta. Istakla se kasnostasna sorta Mima sa najvećim prosečnim prinosom u mreži makroogleda, što znači da je treba širiti u aridnijim regionima. Sorte Sava, Tea i Zvezda bile su najprinosnije u prvoj grupi zrenja a Bečejka, Valjevka i Alisa u nultoj. Utvrđeno je znatno variranje sadržaja proteina i ulja u zrnu soje u zavisnosti od lokaliteta i sorte.