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United States Department of Agriculture

Agricultural Research Service

Research Project: INTEGRATED ORCHARD MANAGEMENT AND AUTOMATION FOR DECIDUOUS TREE FRUIT PRODUCTION

Location: Appalachian Fruit Research Laboratory

Title: The mechanisms of plant stress mitigation by kaolin-based particle films and its applications in horticultural and agricultural crops

Author
item Glenn, D Michael

Research conducted cooperatively with:
item

Submitted to: HortScience
Publication Type: Abstract Only
Publication Acceptance Date: December 5, 2011
Publication Date: January 17, 2012
Citation: Glenn, D.M. 2012. The mechanisms of plant stress mitigation by kaolin-based particle films and its applications in horticultural and agricultural crops [abstract]. HortScience. 74(6):697-698.

Technical Abstract: Kaolin-based particle films have utility in reducing insect, heat, light, and uv stress in plants due to the reflective nature of the particles. Particle films with a residue density of 1 to 3 g/ square meter have been evaluated in a range of crops and agricultural environments. The particle film is a general insect repellant due to the change in the plant’s leaf/fruit texture but also because it changes the reflected light signature of the plant causing insect avoidance for many pests. The alteration of reflected light is due to the ability of the particle film to reflect IR, PAR, and UV radiation. Reflection of IR can reduce canopy temperature as much as 5 C, which will reduce potential transpiration. The reduction of PAR by the film at the leaf level is compensated in varying degrees by diffusion of PAR into the interior of the canopy. Whole canopy photosynthesis can be increased by the combination of reduced canopy temperature and increased interior canopy light. The reflection of uv is a key element in reducing solar injury or sunburn in fruit. In apple, reducing both PAR and uv are effective means of reducing sunburn damage. The use of a reflective particle film is effective in mitigating environmental stress and has significant economic benefits in agricultural crops.

Last Modified: 10/22/2014
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