تأثير حجم البذور و مسافات الزراعة في الحاصل و مكوناته لصنفين تركيبين من الذرة الصفراء (Zea mays L.)‎

الملخص EN

A field experiment was carried out in the growing season 2010 at two locations (Mosul and Kalak), to study the effect of seed size (large and small) on the yield and yield components of two Zea mays varieties (buhouth-106 and Sara) using four planting spaces within rows (15, 20, 25, 30 cm.).

The experiment was set out as with three replications in RCBD design.

The results illustrated that there were no significant differences between plants grown from large or small seeds in most of the yield and yield components characters.

An except was found for harvest index (HI) and seed index for plants grown from large seed at Mosul location only.

Sara Variety was superior in most yield characters at Kalak location and in (HI) at two locations.

While Buhouth-106 was superior in the biological yield at Mosul location only, It was observed that the ear weight, grain weight, No.

of grain / ear, 500-grain weight and plant grain yield were increased at 30 cm.

plant space at two locations.

While grain yield (ton / ha), Biological yield and (HI) were increased at 15 cm.

plant space at two locations .The second order interaction did not show a significant differences in most yield characters.

The study clarify that the effect of seed size restricted in emergence and seedling stages only while plant density and varieties affected strongly in later growth stages.