Abstract
For the purpose of evaluating the effect of adding the potassium and several levels
of nitrogen in the growth and yield two cultivars of wheat under sprinkler irrigation
system. Afield experiment was carried out during the 2016-2017 season in Ain
Tamur in Karbala City. The study contained two factors. The first factor was two cultivars
of wheat Adnan 99 and G5 while the second factor was addition of chemical
fertilizers T1 addition of 200 kg h-1 of urea without adding potassium, T2 addition of
260 kg h-1 of urea without adding potassium, T3 addition of 400 kg h-1of urea without
adding Potassium, T4 addition of 200 kg h-1 of urea and 50 kgh-1of potassium sulphate,
T5 addition of 260 kg h-1of urea and 50 kgh-1 of Potassium Sulphate, T6 addition
of 400 kgh-1of urea and 50 kgh-1 of potassium. The Randomized Complete Block
Design (RCBD) was used with two factors and five replicates. The results showed the
exceeding of Adnan 99 cultivar by giving the highest rates of spike length 7.34 cm,
grains number in the spike 32.30 grain spike-1, weight of 1000 grains 35.16 gm,
grains yield 2.58 ton h-1 harvest index 34.9%; and the exceeding of G5 in the plant
height 60.88 cm, spikes number 283.6 spike m-2, and biological yield 7.71 ton h-1. In
addition, the results showed the exceeding of T6 treatment by giving the highest rates
of plant height 67. 29 cm, spikes number 320.5 spike m-1, spike length 8.77 cm,
weight of 1000 grain 37.75 gm grains yield 3.57 ton h-1, biological yield 10.00 ton h-1
, and harvest index 36.3%.The results also showed a significant interaction between
Chemical fertilization and cultivars in the most studied characters. It can be concluded
from this study that the addition of potassium and nitrogen has anobvious effect in
increasing grain yield.
of nitrogen in the growth and yield two cultivars of wheat under sprinkler irrigation
system. Afield experiment was carried out during the 2016-2017 season in Ain
Tamur in Karbala City. The study contained two factors. The first factor was two cultivars
of wheat Adnan 99 and G5 while the second factor was addition of chemical
fertilizers T1 addition of 200 kg h-1 of urea without adding potassium, T2 addition of
260 kg h-1 of urea without adding potassium, T3 addition of 400 kg h-1of urea without
adding Potassium, T4 addition of 200 kg h-1 of urea and 50 kgh-1of potassium sulphate,
T5 addition of 260 kg h-1of urea and 50 kgh-1 of Potassium Sulphate, T6 addition
of 400 kgh-1of urea and 50 kgh-1 of potassium. The Randomized Complete Block
Design (RCBD) was used with two factors and five replicates. The results showed the
exceeding of Adnan 99 cultivar by giving the highest rates of spike length 7.34 cm,
grains number in the spike 32.30 grain spike-1, weight of 1000 grains 35.16 gm,
grains yield 2.58 ton h-1 harvest index 34.9%; and the exceeding of G5 in the plant
height 60.88 cm, spikes number 283.6 spike m-2, and biological yield 7.71 ton h-1. In
addition, the results showed the exceeding of T6 treatment by giving the highest rates
of plant height 67. 29 cm, spikes number 320.5 spike m-1, spike length 8.77 cm,
weight of 1000 grain 37.75 gm grains yield 3.57 ton h-1, biological yield 10.00 ton h-1
, and harvest index 36.3%.The results also showed a significant interaction between
Chemical fertilization and cultivars in the most studied characters. It can be concluded
from this study that the addition of potassium and nitrogen has anobvious effect in
increasing grain yield.