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Abstract
A large volume generator with a foam-producing rate of 130 ft3/min is described. The generator is based on a simple principle and could be easily adapted to a variety of field foam application requirements. A combination of 3 materials has been found that will form an economical, stable, nontoxic foam for insulating crops during freezing conditions. Field tests showed that the foaming materials and foam generator have the necessary characteristics for covering large acreages of temperature-sensitive crops.
Abstract
Foam was applied for frost protection to January planted cantaloupes (Cucumis melo L.) in the Lower Rio Grande Valley of Texas. Two planting configurations consisting of shallow trenches and conventional beds were compared to evaluate volume of foam required and durability. The trench planting technique increased the foam’s durability and reduced the volume approximately three-fourths. The cost of foam application to a low profile crop in the shallow trenches was approximately $74.00 per hectare. Leaf temperature in the foamed trenches was up to 12°C warmer than nonfoamed conventional beds.