EFFECTS OF FERTILIZATION ON LEAF NUTRIENTS CONTENT AND YIELD OF IRRIGATED POTATOES

Badawi, Hamdi; Swidan, Ashraf; Balg, Nourden

doi:10.21608/mjae.2012.101356

EFFECTS OF FERTILIZATION ON LEAF NUTRIENTS CONTENT AND YIELD OF IRRIGATED POTATOES

Document Type : Original Article

Authors

¹ High Technical Institute of Agriculture-Elgeran.- Tropli- Libyan

² High Technical Institute of Agriculture-Elgeran.- Tropli- Libyan.

10.21608/mjae.2012.101356

Abstract

This study was conducted through a field experiments in the Libyan Arab Jamahiriya, Tripoly at Almarazeeg area south east Tripoly International Airport. In a field trials the fertilization of potato variety Sponta, with different rates and times of fertilizer N P K application and their effects on leaf nutrients content and potato yield was examined. Leaf samples were collected from the, field experiment three times during the grown season, namely at 45, 60, and 75 days after emergence. Leaf samples were analyzed for N, K, Ca and Mg. The results showed that leaf-N content within the deficiency levels late in the season (75 days from emergence) in low yielding treatments, where K was low in high yielding treatments, but adequate, late in the season. Leaf-Ca content seems to be adequate. Where Mg at the deficiency level throw all treatments and plant growth stages.Heavy N and P fertilization gave the highest potato yield obtained (up to40.oo t/ha).

Main Subjects

Agricultural Irrigation and Drainage Engineering

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