HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Vretta-Kouskoleka, H. Articles by Kallinis, T. L. Search for Related Content PubMed Articles by Vretta-Kouskoleka, H. Articles by Kallinis, T. L. Agricola Articles by Vretta-Kouskoleka, H. Articles by Kallinis, T. L.

Iron Deficiency in Cotton in Relation to Growth and Nutrient Balance¹

ABSTRACT

Iron deficiency symptoms were developed in cotton (Gossypium spp.) growing in nutrient solutions. The first symptoms appeared when the plants were 15 days old, while a general chlorosis developed by the time the plants were 8 weeks old. The deficiency was first observed on the upper young leaves. These leaves became chlorotic and progressively their margin turned necrotic and curled upwards. Addition of Fe in the nutrient solution of the deficient plants corrected all deficiency symptoms within 1 week. Two ranges of Fe concentration, 85–112 ppm for the young cotton blades, and 57–88 ppm for the old cotton blades were found to be the critical concentrations of Fe for cotton.

¹ Contribution from the Institute of Soils & Fertilizers of the Ministry of Agriculture, Athens, Greece.

² Chemist-Soil Scientist (M.S.) and Chemist respectively, in the Institute of Soils and Fertilizers, Ministry of Agriculture, Lykovrissi, Kifissia, Athens, Greece.

Received for publication September 25, 1967. Accepted for publication December 5, 1967.