اعلانات هامة

The present study was conducted at Kahatania Date Palm propagation Center in Al-Raqqa Province on date Palm offshoots Khestawy cultivar to study the effect of fertilization by main macro nutrients on their growth, where were added the following chemical fertilizers: urea 46% to supply nitrogen element, super phosphate 46% to supply phosphorus element and potassium sulphate 50% to supply potassium element in three levels( low, medium and high) where each level forms treatment and control treatment without fertilization, all super phosphate fertilizer was added in December while fertilizers of urea and super phosphate were divided and were added once each month from March until September. The results were revealed that superiority significantly was in fertilization treatment with high level (375N + 225P205 + 225K20)g/ offshoot/year in comparison with the control treatment in average of new fronds number which gave (10.33) frond/offshoot, extension average of oldest leaf which was (53.33) cm, extension average of newest leaf which was (90.67) cm and number average of new offshoots which was (2). It was found that fertilization treatment with high level led to the highest average in all studied characteristics comparison with the other tested levels.

Key words: Date palm, main macro nutrients, Khestawy, offshoots, fertilization.

أجريت هذه الدرسة في مركز اكثار النخيل بالقحطانية في محافظة الرقة على فسائل نخيل التمر صنف خستاوي لمدة عام اعتبارا من شهر كانون الأول 2011بهدف دراسة تأثير التسميد بالمغذيات الكبرى الرئيسية (N ,P, K) على نموها ,حيث تم اضافة الأسمدة الكيماوية التالية :اليوريا N%46 والسوبر فوسفات الثلاثي %46 و  P2O2