Effect of Weather Conditions on Yield and Yield Components of Spring Malting Barley

Abstract

A field trial with four cultivars of two-rowed spring barley was set up at the experimental field of the Secondary School of Agriculture, Požarevac, during 2012-2014 to evaluate yield and grain yield components under different growing seasons. Cultivars were sown at 450 germinating grains m-2. At tillering, the plants were fertilised with 60 kg nitrogen ha-1. The tested properties were significantly affected by weather conditions during the growing season, with different effects produced across cultivars. The values for grain yield, thousand-kernel weight, grain weight per spike, kernels per spike and plant height were highest in all cultivars in the year characterised by moderate temperatures at the grain filling stage and high amounts of precipitation in the second part of the growing season. 'Novosadski 448' exhibited the highest values for grain yield, kernels per spike and grain weight per spike.

Poljski ogledi sa četiri sorte jarog dvoredog ječma postavljeni su na imanju Poljoprivredne škole u Požarevcu u periodu 2012-2014. godine, sa ciljem da se analizira prinos i komponente prinosa zrna u različitim vegetacionim sezonama. Sorte su zasejane sa 450 klijavih zrna m-2. U fazi bokorenja izvršena je prihrana sa 60 kg ha-1 azota. Na vrednosti analiziranih osobina značajno su uticali vremenski uslovi tokom perioda vegetacije, pri čemu je njihov uticaj kod pojedinih sorti bio različit. Najveći prinos zrna, masa 1000 zrna, masa zrna po klasu, broj zrna po klasu i visina biljaka bili su kod svih sorti u godini sa umerenim temperaturama u vreme nalivanja zrna i velikom količinom padavina u drugom delu vegetacione sezone. Sorta Novosadski 448 imala je najveći prinos zrna, najveći broj zrna po klasu i najveću masu zrna po klasu.