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Seed production of Stylosanthes guyanensis. 2. The consequences of defoliation.

Loch, D. and Hopkinson, J. and English, B. (1976) Seed production of Stylosanthes guyanensis. 2. The consequences of defoliation. Australian Journal of Experimental Agriculture, 16 (79). pp. 226-230.

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Article Link(s): http://dx.doi.org/10.1071/EA9760226

Publisher URL: http://www.publish.csiro.au

Abstract

The consequences of defoliation on seed production of stylo (Stylosanthes guyanensis) were examined in field experiments at Walkamin in north Queensland. The practical aim of defoliation is to present a level uncompacted crop canopy to the harvester without a reduction in the quantity of seed carried at harvest ripeness. It was concluded that the latest date at which defoliation is reasonably certain to achieve its objectives is about four weeks before first flower initiation. In north Queensland, this means late February for cvv. Cook and Endeavour and early April for cv. Schofield. The results suggest that development of the population of individual shoots must be synchronized to produce the highest peaks of standing seed; that this is best achieved by ensuring that a closed crop canopy with a ceiling shoot population exists at the time of first flower initiation; and that poorly synchronized shoot development is a consequence of defoliating too late and a cause of reduced seed production.

Item Type:Article
Corporate Creators:Department of Employment, Economic Development and Innovation (DEEDI), Agri-Science, Crop and Food Science, DPI
Business groups:Agri-Science, Crop and Food Science
Additional Information:© CSIRO.
Keywords:Stylo; Stylosanthes guyanensis; defoliation; seed production.
Subjects:Plant culture > Seeds. Seed technology
Plant culture
Deposited On:23 May 2011 01:49
Last Modified:25 Oct 2011 05:26

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