PJB-2020-79
Evaluation of several wheat cultivars in respond to different types of fertilizers including bio-fertilizer under rainfed conditions
Fathi Abdulkareem Omer
Abstract
The research work was accomplished at the Duhok-Mosul areas during 2018-2019 growing season to study the growth and yield of various wheat cultivars (Adana99, Cihan; Tammoz and Criso; Italy) under various methods of fertilizers application including bio-fertilizer (Corabac G); Yaramila, in addition to traditional DAP and check or control treatments under rainfed conditions of two different isohyets conditions Governorate. Randomized complete block design was applied with four replications. Potential grain yield is highly affected by the number of reproductive tillers (spikes) per area unit; differences in final grain yield were highly and positively correlated to the number of tillers (r= 0.54**) and above ground biomass (r= 0.68**). The grain yield was about three times higher in Rikava location (3.19/1.01 t.ha-1). Both of Cihan and Adana99 wheat significantly produced higher grain yield (2.44 and 2.43 t.ha-1 respectively) followed by Tammoze and Italy, the Criso durum wheat was the inferior with only 1.65 t.ha-1 grain yield. On the other hand, DAP fertilizer (2.58 t.ha-1) was the best fertilizer treatment followed by YARA and BIO and all treatment were significantly higher than the check unit which produced only 1.7 t.ha-1. As for the interaction of wheat cultivars and fertilizer treatments, Adana99 with DAP (2.79 t.ha-1) and Cihan with DAP (2.71 t.ha-1) recorded higher grain yield. Also, these two cultivars with BIO fertilizer produced significant grain yield and each gave (2.5 t.ha-1). Financial analysis revealed the superiority of both Anana99 and Cihan cultivars with DAP fertilizer followed by BIO fertilizer as they contributed positively with the highest final revenue.
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