Abstract
A COMPREHENSIVE account of this malady, together with the remedial measures to be adopted, has been given by Prof. R. H. Dastur (“The Periodic Partial Failures of American Cottons in the Punjab Their Causes and Remedies”. Sci. Monograph, No. 2, India .Central Cotton Committee, Bombay, 1945). The failure in question is of the nature of a physiological disease, popularly known as ‘tirak’, the symptoms of which include the premature cracking of bolls with immature seeds and poor quality of lint. On light sandy loams the leaves become discoloured at the onset of the reproductive phase, the characteristic yellow and red colours being followed by premature leaf fall. A study of the cotton crop in the Punjab in all its phases of growth led to the general view that where tirak is evident the vegetative and reproductive phases are physio logically unbalanced: the detailed investigation of this hypothesis has been productive of many interesting results of both practical and scientific interest.
Article PDF
Rights and permissions
About this article
Cite this article
Periodic Partial Failures of American Cottons in the Punjab. Nature 158, 524–525 (1946). https://doi.org/10.1038/158524a0
Issue Date:
DOI: https://doi.org/10.1038/158524a0