Defoliation is one of the most miraculous but least thought about management actions that is undertaken in a cotton crop.
Although cotton’s primary harvest aids (Thidiazuron and ethephon) have been in use for over 40 years, how they work and interact with the crop is often not well understood. Ensuring the efficacy of harvest aid products will help maximise harvested yield and reduce leaf trash contamination in modules.
Preparing a cotton crop for harvest involves two distinct but related physiological processes: defoliation (leaf removal) and dehiscence (boll opening).
A new CottonInfo Defoliation Booklet has been developed to help provide guidance on harvest preparation and defoliation.
The booklet covers:
Download a copy of the Defoliation Booklet on the CottonInfo website here.
The resource will also be included in the next edition of
The Australian Cottongrower.