تأثير مواعيد و كمية إضافة البوتاسيوم في نوعية حبوب حنطة الخبز و بعض الصفات الأخرى

Abstract EN

A field experiment was conducted at the experimental farm, Dept.

of Field Crop, Coll.

of Agriculture, Univ.

of Baghdad ,during 2011-2012, to study the effect of potassium fertilizer levels and appilication stage on bread wheat grains quality Triticum asetivum L.(Var- Abu- Ghraib-3) and some other characteres .

Factorial experiment was conducted in RCBD design with three replication involved two levels of potassium 120,180 kg.ha-1 and control treatment the second factor was three stage of application (tillering ,Booting , flowering).

The results shows non significant differ between potassium leveles for all studied traits, except havest index.The potassium level 180 kg.ha-1 produced plants with highest harvest index (38.17%), in comparison to the level 120 kg.ha-1, (36.82%).The application stage at flowering time produced grains with higher protein (12.18%), when compard to the tillering and booting stages (11.32% and 12.17%) respectively.

The potassium application stage at tillering was superior in protein yield and harvest index 0.935 mg.ha-1 and 40.37%, respectively.

It can be conclude that potassium addition stage was more important than, it,s dosages.