تأثير بعض منظمات النمو النباتية و نوعية مياه الري في الحاصل و مكوناته لحنطة الخبز

Abstract EN

The experiment was carried out at the experimental farm of the Department of Field Crops, College of Agriculture, University of Baghdad, during 2011-2012 and 2012-2013 seasons.

The objectives of the experiment were to study effect of plant growth regulator and irrigation water quality on yield and its components of bread wheat (Triticum aestivum L.

cv.

IPA 99).

Randomized complete block design with three replications was used for the experiment.

The experiment had the treatments of plant growth regulator (Ethephon 0.600 kg.ha-1 and Cycocel 0.277 kg.ha-1) and irrigation water quality (drainage, well and river water) in addition the control treatment.

The experiment was carried out by Nested arrangement.

The results showed that of plant growth regulators caused significant effect on the characteristics studied.

Ethephon increase spike number, weight of 1000 grain and grain yield for the first season.

Cycocel increase number of grains per spike and by 20.7% for the first season.

In addition, Cycocel increased spike number, weight of 1000 grain and grain yield by 24.5%, 11.7% and 35.9% for the second season, respectively.

The irrigation by drainage water caused significant increasing in spike number, grain per spike number and grain yield by 36.8%, 7.8% and 35.1% for the first season, respectively, while in the second season irrigation by drainage water caused significant increased weight of 1000 grain and grain yield by 10.1 and 14.8% respectively.

But the treatment of river water irrigation significantly increased weight of 1000 grain by 4.8% for the first season.

The interaction between Ethephon and drainage water significantly gave increase grain yield by 139.0% and 75.7% for both seasons, respectively, and increased spike number by 117.1% for the first season.

In addition, the interaction between Ethephon and river water significantly increased weight of 1000 grain by 16.8% for the first season.