تحديد الاحتياج السمادي الأمثل من الآزوت والبوتاسيوم لصنف القمح القاسي بحوث (11)‎ في ظروف منطقة الغاب

الملخص EN

The experiment was carried out at Al-Ghab Research Station, Hama, of the General Authority for Scientific Agricultural Research, during the two seasons 2019-2020/2020-2021, to study determining the fertilizer recommendation (N, K) for durum wheat (Bohous 11) in Al-Ghab region, the transactions consisted of the following (added as Urea fertilizer 46% and potassium sulfate fertilizer 50%) : NO control (without addition), N1-75%, N2=100%, N3-125%, KO control (without addition), K1=75%, K2=100%, K3-125%.

(These rates were added as a percentage of the fertilizer recommendation, for the high-yield, rainfed, wheat crop, approved by the Ministry of Agriculture and Agrarian Reform, in the first settling zone according to the soil analysis).

The research was carried out by a split plots design, where the potassium treatments represented the main plots, and the nitrogen treatments represented the split plots, with three replications for each treatment.

The results showed that the effect of nitrogen was positive on all the studied traits, and potassium showed a positive effect on the studied traits in the presence of nitrogen, and a negative effect in the absence of nitrogen fertilizer.

The results showed that, the treatment N3K3 (corresponding to 125% of the fertilizer recommendation for both fertilizers) was superior to all treatments with statistically significant differences in grain productivity, and straw production per unit area.

Which amounted to (5.6 and 8.9 tons/ha, respectively), and the lowest rate of production was for treatment NOK3, which gave (1.76 grains and 3.6 straws) ton/ha, with apparent differences from the control that yielded (1.7 grains and 3.75 straw) ton/ha.