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| Pre-harvest desiccation is widely used in mainstream agriculture in crops including: | Pre-harvest desiccation is widely used in mainstream industrial agriculture in crops including: | ||
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Revision as of 16:42, 10 June 2015
Pre-harvest crop desiccation (also siccation ) refers to the application of a herbicide to a crop shortly before harvest. Herbicides used include glyphosate, diquat and glufosinate. For potatoes, carfentrazone-ethyl is used. Other desiccants are cyanamide, cinidon-ethyl, and pyraflufen. Uneven crop growth is a problem in northern climates, with wet summers, or poor weed control. With desiccation a number of advantages are cited: More even ripening is achieved and harvest can be conducted earlier; weed control is initiated for a future crop; earlier ripening allows for earlier replanting; desiccation reduces green material in the harvest putting less strain on harvesting machinery. Some crop may be mechanically destroyed when crop desiccation machinery moves through the field.
The application of glyphosate differs between countries significantly. It is commonly used in the UK where summers are wet and crops may ripen unevenly. Thus in the UK 78 % of oilseed rape is desiccated before harvest, but only 4 % in Germany.
Use
Pre-harvest desiccation is widely used in mainstream industrial agriculture in crops including:
- Maize
- Cereals such as barley, wheat, and oats
- Oilseed rape
- Legumes including Lentils, Garbanzos, and Soybeans
- Sunflower
- Potatoes
- Cotton
There are some exceptions to the wide acceptance and use of chemical dessication:
- In January 2014 Austria banned the use of glyphosate for desiccation
- In April 2015, Grain Millers, a major oat buyer in Western Canada, announced that it was refusing oats in which glyphosate had been used as a desiccant.
References
- "Assessment of large-scale test – Pre-harvest siccation in rape". Feiffer-consult. Retrieved 2 June 2013.
- ^ "The agronomic benefits of glyphosate in Europe" (PDF). Monsanto Europe SA. February 2010. Retrieved 2 June 2013.
- ^ "Desiccation programmes". Potato Council. 2 August 2011. Retrieved 2 June 2013.
- ^ Brändli D, Reinacher S (January 2012). "Herbicides found in human urine". Ithaka Journal. Retrieved 3 June 2013.
- Industry Task Force on Glyphosate (21 November 2013). "Preharvest weed control and desiccation". Retrieved 15 January 2014.
- ^ Province of Saskatchewan Dept of Agriculture. October 2010 Herbicide Options to Enhance Harvesting FAQ
- Arnason, Robert (28 May 2015). "Richardson Milling says glyphosate dessication acceptable for its oats". The Western Producer. Retrieved 8 June 2015.
- Robert Harris for Farmers Weekly. June 29 2012 Challenging season for desiccating oilseed rape
- Lulai EC. Skin-set, Wound Healing, and Related Defects. Ch 22 in Potato Biology and Biotechnology: Advances and Perspectives: Advances and Perspectives Eds. Vreugdenhil D et al, Elsevier, 2011 ISBN 9780080525051
- Kozlowski TT. Extend and Significance of Shedding Plant Parts. Chapter 1 in Physiological ecology Shedding of Plants Parts, Ed. T.T. Kozlowski. Elsevier, 2012 ISBN 9780323145602
- Industry Task Force on Glyphosate (8 January 2014). "Preharvest use of glyphosate:Recent Austrian decision". Retrieved 5 January 2014.
- Arnason, Robert (22 April 2015). "Oat buyer says no glyphosate pre-harvest". The Western Producer. Retrieved 8 June 2015.
External links
Media related to Crop desiccation at Wikimedia Commons