The effect of sowing dates and seed rates on new inputs of durum wheat under drought conditions

Abstract EN

A field experiment was carried out during the season 2019/2020 in Mosul /Tilkaif district, the experiment included three factors, the first is sowing dates, early (10 November), medium (25 November) and late (10 December), the second, seeding rates (200, 250 And 300 seeds.

m-2), and the third is six new genotypes of Durum Wheat (Nano, Uramy, Miki3, Ouhassan and Atlhagy) in addition to the local variety Svivo for control.

The R.

C.

B.

D randomized complete block design was applied according to the split-split plots system with three Blocks.

The results indicated to significantly superiority of the early date only in traits of biological yield and the grain yield.

and this date did not differ significantly from the average date in the traits of the number of grains per spike and the weight of 1000 grain while the sowing dates did not significantly affect the traits of the number of tillers.

m-2.

The seed rates did not significantly affect the number of seeds per spike and the weight of 1000 grains However, the seeding rate 300 seeds.

m-2 significantly exceeded in the number of tillers.

m-2, but not significantly different from 250 seeds.

m-2 rate.

Whereas, the seeding rate 250 seeds.

m-2 significantly superior in traits (biological yield and grain yield.

Compared to 300 and 200 seeds.

m-2.

Recording to genotypes, Ouhassan, Atlhagy, and Nano showed exceed in the number of grains per spike, Atlhagy outperformed in the biological yield and Ouhassan in the grain yield, while the Uramy exceeded in the weight of 1000 grains.

The interactions of early and medium sowing date with different seeding rates outperformed all trait.

All the interactions were significant in effecting the studied trait.