Effect of Spraying Stages of Micro-Nano Elements on some Productive and Economical Traits of Wheat Cultivars (Triticum aestivum L.)

The aim of the research is to study the effect of the stages of spraying nano-microelements on some yield characteristics and the economic feasibility of wheat varieties. Soil with a mixture of clay texture and using the split plank design using random complete sectors (R.C.B.D) The cultivars coded (Abu Ragheef V1, Baghdad V2, Babil V3, Aba 99 V4) occupied the main panels, while the spraying stages coded (tillering stage S1, booting stage S2, flowering stage S3) occupied the secondary panels. The results showed differences between the cultivars in some of the studied traits, as the father variety was significantly superior in the number of spikes and the number of grains per spike amounted to 410.7 spikes m 2 and 82.7 grains spike -1 , respectively, and the characteristic of the grain yield was 7.354 tons h -1 , the biological yield was 24.006 tons h -1 , and the total revenue 8,629,944 dinars h -1 , and a net profit of 6,430,044 dinars h -1 , while Abu Ragheef excelled in the weight of 1000 grains, amounting to 44.19 gm. As for the spraying stages, the Al-booting stage gave the highest average of the number of spikes, which amounted to 369.3 spikes m 2 , and the Al-Booting stage excelled in grain yield 7,406 tons h -1 , the biological yield 22,481 t h -1 , and the total revenue 8,448,561 dinars h -1 . As for the overlap between the stages of spraying the micro-nano elements and the cultivars, the combination (Aba 99×S2) excelled in grain yield of 7.788 tons h -1 .