تأثير نسجة التربة وموعد الزراعة في الحالة الغذائية لخمسة اصناف من الحنطة Triticum aestivum L.

Abstract

An experiment was conducted at Al-bargah district (30km) north east kerbala governorate during the winter season of (2007-2008) in a plastic pot culture . The objective was to find out the effects of soil texture and sowing dates (111-1511-30112007) 0n the nutritional status of nitrogen ,phosphorus and potssium (N.P.K) of various wheat genotypes (Iraq , Adnania ,Abu-Ghraib-3 , Ashour ,IPA-99).A factorial experiment within a Completely Randomized Design was adopted .The results of the present study indicated that , the silty loam soil produced higher value of nitrogen and phosphorus concentration of plant . The second sowing date (1511) gave the highest values of concentration of nitrogen in root and flag leaf. The third sowing date (3011) gave higher potassium concentration in root and flag leaf .Ashour cultivar gave the highest values of nitrogen concentration in root and flag leaf .There was a significant interaction between soil texture , sowing dates and cultivars for all traits measured in this study .