Green House Film Disease Control Effect

	Disease Control Effect
	FVG - Folien Germany    has developed a range of special disease control films, which contribute efficiently in "Integrated Pest Management" and help to reduce the usage of pesticides.   An important type of disease and insects control films is "UV-blocking" films, which absorb UV-radiation up to 390 nm, thus achieving: Reduction of the population of whiteflies, thrips, miners, aphids and other insects in greenhouses, thereby also reducing the viruses which are vectored by these insects. Control of the spread of certain diseases (such as botrytis), by reducing the sporulation of the relevant pathogenic fungi. Reduction of "blackening" of red rose petals, thereby increasing their commercial value.   Note:“UV-blocking” films should be used after prior testing when bumble-bees are used as pollinators or when growing eggplants or other purple flowers or crops. A number of other parameters, such as temperature and humidity, enhance the development of diseases. The plastic film alone may not control diseases, it can, however, contribute to their control, when used in conjunction with other suitable methods. Insects have compound eyes and they can see in the UV range as well as in the visible domain up to (but not including) the red section (600-700 nanometers wave length). Blocking out the UV blocks out a significant part of the visible range of insects. Since the insects can not see many of the signals which they normally would see outdoors, when they are under UV blocker film, a considerable decrease in white fly, thrips and other insect activity has been observed inside the greenhouse covered with UV Blocker films. One of the subsequent positive results has been a marked reduction in the use of insecticide spray. Insects are the carriers and transmitters of many viruses and since this film affects the insect activity it also is called Antivirus film. Blackening (or petal discoloration) of red roses is a major problem for the rose growers. This phenomenon is caused by the UV radiation acting together with low temperatures. A crop under UV Blocker film does not experience blackening of rose petals. The effect of the blocking of the U V radiation also helps in reducing the extent of the damage caused by the Botrytis fungus   More Details : http://www.fvg-folien.de