Preliminary Note on Leaf-crinkle of Cotton in the Gezira Area, Sudan

Abstract

Owing to the wide divergences of opinion at present current among those in the Sudan who are interested in leaf-crinkle of cotton, it is thought that the present paper, incomplete as it is, may be of some value in indicating what little knowledge has so far been obtained by observations and direct controlled experiments, and in outlining the more obvious and important directions in which further investigations should proceed.