Uticaj jesenjeg i prolećnog đubrenja soje na prinos zrna i sadržaj ulja

Abstract

Tokom 2017., 2018. i 2019. godine ispitivana je primena NPK i N đubriva u jesenjem i prolećnom periodu na prinos, sadržaj ulja u zrnu soje i prinos ulja po jedinici površine. Jesenja primena NPK đubriva uz predsetvenu primenu azotnog đubriva AN ima najveći pozitivan efekat na prinos zrna i prinos ulja po jedinici površine. Predsetvena primena azotnih đubriva, bez primene NPK đubriva ima mali efekat na povećanje prinosa zrna i ulja soje. Prolećna primena NPK đubriva i azotnog đubriva AN povećava sadržaj ulja u zrnu, ali smanjuje prinos ulja po jedinici površine i prinos zrna, u odnosu na jesenju primenu NPK đubriva.

During the years 2017, 2018 and 2019, application of NPK and N fertilizers was examined in autumn and spring periods, as well as it’s influence on yield, soybean grain oil content and oil yield per area unit. Applying NPK fertilizer in autumn along with a pre-sowing treatment with nitrogenous fertilizer AN has the greatest positive effect on grain and oil yield per area unit. Pre-sowing application of nitrogenous fertilizers without the use of NPK fertilizer has a small effect on the increasement of soybean grain and oil yields. Spring application of NPK fertilizers and nitrogenous fertilizer AN increases grain oil content, but decreases oil yield per area unit and grain yield, when compared to autmn application of NPK fertilizers.