Keep Your Yard Pest-Free
Other means of pest control
The pesticides alone, given the problems they cause, are not the ideal solution in the long term, to combat pests. Fortunately other weapons are appearing. Some of the most promising is the use of farming methods that hinder the spread of the pest, biological and genetic control of pests, the use of hormones and pheromones, radiation, etc. The combined use of these techniques when necessary supplemented with a moderate use of pesticides, called Integrated Pest Management. The FAO (United Nations agency responsible for food) is promoting programs and Integrated Pest Management believes it is the right method to achieve sustainable agriculture.
Various crop characteristics are important in the fight against the spread of the pest. Which are healthy and hardy plants makes them much more resistant against organisms that attack them and choose the right time for planting, irrigation and fertilization is very important to maintain healthy crops.Also can be used pest control supplies to fight pests.Another technique being used successfully, for example in crops of alfalfa, is to leave a portion of uncultivated field. The area under cultivation is good for predators of organism that causes plague live there. They control pests neighboring cultivated area.
Crop rotation is effective in controlling pests. We have seen, for example, that when not plant corn every year in the same rows of a field, a pest of this plant called the rootworm is effectively controlada.Subir to Top
2. Biological control
It is to use disease, parasites and natural predators to control pest organisms. Has been used, for example, successfully, when an area has been introduced a pest from another part of the Earth. Newcomer body is in ideal conditions to multiply because it has no enemies or competitors in the new place that just invade. One solution, which has been successful on several occasions, has been searching the place of origin of the plague organisms controlled there and bring new place to attack. Up to Top
3. Genetic control
In the genetic control a distinct species is not used to control the pest, but the same species is modified.
One of these control techniques using sterile males. A large number of male insect pests that are sterilized then released. Sterile compete with the normal fertilization of females, so many of the theoretically possible offspring are not produced, which decreases the pest population from one generation to another. This technique is successful especially those insect species where the female is crossed only once.
Another is to develop procedures for various techniques, varieties of pest-resistant crops. It can be done by selecting plant specimens that have resisted the plague and crossing each other, until a strong genetic variety. This process usually takes about 10 or 20 years but the result is often outweigh the effort and money spent.
Genetic engineering provides interesting techniques to get varieties of pest-resistant plants. For example, a gene from the soil bacterium Bacillus thuringiensis (producing a poison that kills insects) has been introduced into cotton plants. The caterpillars that feed on leaves of these genetically altered plants die or suffer serious disturbances in their development.
The development of resistant strains have had great success in the fight against pests, but has not always been a success. In many cases insects, fungi or bacteria proliferate rapidly and can again become the plague of variety it was resistente.Subir to Top
4. Hormones and pheromones
Pheromones are substances that produce animal to attract or provoke a response in other individuals of the same species. They are well known to those used to attract individuals of the opposite sex and thus facilitate fertilization. Each insect species has its own specific pheromones and therefore can be used very selectively to act on a specific organism. Thus, for example, they have been used successfully to attract Japanese beetles to traps that are killed.
Hormones used by insects to control their development and growth can also be used to fight them. These hormones must be present at certain times of insect life in appropriate quantities and if they are not present in other appropriate times cause serious deformities and death of the insect. We investigate to find such substances, but has also been concern that they could cause damage to others, even in hombres.Subir to Top
When there is a risk that the importation of a plant or animal other country enter a new pest, governments prohibit importation or decree quarantine the farm where there has been the emergence of this new pest. This quarantine may involve the destruction of the entire crop or livestock operation that contaminated or prohibition to sell their products for a tiempo.Subir to Top
6. Integrated Pest Control
Many pests can not be controlled effectively with a single technique, but using various methods combined control good results. This combination of cultivation techniques, biological controls and use of chemicals is known as Integrated Pest Management. In this system pesticides are used sparingly, only when other methods are not effective.
This system is very important part of the new agricultural methods being promoted worldwide as a way to ensure an effective and environmentally friendly agriculture. In some crops such as cotton it is already having special influence. Cotton is a crop in which a large amount of pesticide used. In the US, for example, while only 1% of agricultural land is used for this crop, it accounts for nearly 50% of all insecticides used in that country. Using simple techniques such as planting rows of alfalfa with cotton fields, reducing the need for chemical pesticides, for Lygus causes, a bug causing considerable damage to cotton, move to the alfalfa, the preference for food.