تأثير نوع السماد الآزوتي في نمو و إنتاجية صنفين من الذرة الصفراء مزروعين في تربة كلسية

الملخص EN

The research was conducted at Stekhris Research Station affiliated to the Agricultural Scientific Research Center in Lattakia - Syria for the year 2020, to study the effect of two types of nitrogen fertilizers (ammonium sulfate [NH4)2SO4] and potassium nitrate [KNO3]) on the growth and productivity parameters of two cultivars of yellow corn (Dina cultivar F1 and Fayhaa cultivars) grown in calcareous soil.

In addition to the control treatment without the addition of nitrogen, at a rate of three replications for each treatment, as the experiment was designed with a Split Plots system and the number of experimental plots was 18 Plot.

The results showed the superiority of the cultivar Dina F1 (a foreign variety) over the cultivar Fayhaa (a local variety) in terms of plant height and during the different stages of growth as well as in average productivity.

Moreover, the nitrogen fertilization had a significant effect on the studied traits, as the ammonium sulfate treatment was superior to the rest of the treatments in plant height and dry weight, as well as in the average productivity of fresh earwigs.

Our results also showed that the highest yield of marigolds was in ammonium sulphate treatment and Dina F1, with productivity reaching (14.04) tons/ha.