تأثير تقطيع الدرنات و مسافات الزراعة في نمو و إنتاجية البطاطـا صنف ديزرية

الملخص EN

A field experiment was conducted in a private potato farm in Mosul city during two spring seasons of 2002 and 2003 to study the effect of two plant spacing between plants (15, 30 cm) and cutting the tubers in different parts weights (hall tubers 50-60 gr.

, half small tuber 25-30 gr., half large tuber 75-85 gr., Large tuber 50-56 gr .

and quarter large tuber 37.5 – 42.5 gr.

)In growth and yield of potato Cv.

Disearee .The result can be summarized as follows :Planting at 30 cm between plants caused a significant increased in number of stem , wet and dry weight of plant , plant yield , and number of tubers per plant, however planting at 15 cm increased significantly plant height and total yield.

Cutting the tubers to different parts weights increased significantly number of stems , wet and dry weigh of plant, plant yield , number of tuber per plant ,tuber weight and total yield when increasing the weight of tuber part .

The interaction between plant spacing and tubers cutting showed a significantly effect on some characters studying.