اعلانات هامة

This research was carried out during 2008 and 2009 growing seasons in faculty of Agriculture Tishreen Un. in order to study the effects of Fe and Mo deficiency on plant growth analysis cotton variety (Alepo 1/33). Planting was done in plastic pots (30 kg sands). Irrigation were don regualy with hoagland solution using (4) fertilization treatments :

1- Hoagland solution (control). (T1)

2- Hoagland solution without Fe (T2).

3- Hoagland solution without Mo (T3).

4- Hoagland solution without Fe + Mo (T4).

The results showed the following:

Adding Irrigation with Hoagland control (T1) significantly increased leave area (LA), Relative crop rate (RCR), crop growth rate (CGR), leave area duration (LAD), Net assimilation rate (NAR), to product seed cotton and dry matter compard with hoagland treatments without Fe (T2), Mo (T3) and Fe + Mo (T4).

All growth parameters minetioed above significantly decreased when irrigated with hoagland solution without Fe, Mo and Fe + Mo (T2, T3 and T4). The Hoagland solution without Fe significantly showed more decrease than Mo in all studied parameters.

Key Words: cotton; Hoagland irrigation, LA.,  CGR, NAR.

نفذ البحث خلال الموسمين 2008 و2009 بهدف دراسة تأثير نقص عنصري الحديد والمولبيدنم في تحليل نمو نبات القطن (حلب 133)، تمت الزراعة في أصص بلاستيكية معبأة بالرمل (30 كغ) بكلية الزراعة في جامعة تشرين ويستخدم لذلك أربع محاليل للتغذية هي: