Effect of nitrogen fertilizer, its addition dates, and polymer gel on the yield traits and its components of bread wheat (triticum aestivum l. )‎

الملخص EN

A field experiment for the agricultural season (2019-2020) was conducted at two locations (Al Hamdania, Talkif) to study the effect of nitrogen fertilizer, its addition dates, and polymer gel on the yield traits and its components of bread wheat (Triticum aestivum L.) Talafar 3 cultivar.

The Randomized Complete Block Design (RCBD) was used according to the split-plots system, with three replicates.

The experiment included two factors, which are five levels of nitrogen fertilizer and its addition dates is zero, the control treatment, (40 kg N / H2 / 1 + 2/1), (40 kg / H3 / 1 + 3/2), (80 kg / ha 2/1 + 2/1), (80 kg / ha 3/1 + 3/2) and four levels of polymer gel (0, 0, 160, 240 kg.ha-1 ).

The nitrogen fertilizer treatments and the addition date occupied the main plots in the experiment and the polymer gel treatments occupied the subplots.

The results indicated that the levels of nitrogen fertilizer and its addition date achieved a significant increase in the yield traits and its components for both locations, where the level of 80 kg.h-1 and the first and second dates gave a significant superiority in most of the traits, also the levels of polymer gel caused a significant increase in the yield traits.

The level (160 and 240 kg.ha-1 ) gave a significant superiority in most of the yield traits and their components for the two research locations, and there was a significant interaction in the yield traits and their components for the two research locations.