Comparative analysis of sunflower production in 2004 and 2005

Abstract

Distribution and amount of precipitation in 2005 had conclusively influence on sunflower yield, especially high precipitations in second part of vegetation (July 80%, August 153% and September 64 % more then multy year average) what bring very intensive appearance of Sclerotinia on head and significantly reduced of yield. In all filed experiments yield was significantly lower than in 2004, since percentage of harvested plants in relation to seedling was almost double lower because that disease. Because of that the effect of some cultural practices was very specific and can not use for correction of already accepted cultural practice which based on average multy year weather condition which appears the most frequently.

Količina i raspored padavina su presudno uticali na visinu prinosa suncokreta u 2005 godini, posebno vrlo visoke padavine u drugom delu vegetacija (juli 80%, avgust 153% i septembar 64 % više od VP) zbog čega je došlo do vrlo intenzivne pojave bele truleži koja je značajno redukovala prinose. U svim analiziranim mikroogledima ostvaren je značajno niži prinos, jer je procenat ubranih u odnosu na ponikle biljke zbog pojave navedenog oboljenja bio gotovo duplo manji u odnosu na 2004. godinu. Zbog toga su efekti pojedinih agrotehničkih mera bili vrlo specifični i ne mogu služiti za korekciju usvojene tehnologije proizvodnje koja je bazirana na prosečnim višegodišnjim vrednostima vremenskih uslova koji se najčešće pojavljuju.