The barriers for plagues are very useful because while it is true that insects and plants carry out a symbiotic relationship. Not all insects are good for plants, since they are installed in them to use as a food source.
Pests in crops:
In the case of agriculture, usually non-flying insects, they represent a danger. Usually these insects, because they are not flying, can not pollinate the flowers. They only take what they need from their host without returning anything in return. They are usually housed under the leaves and through slits within which access and sighting is difficult. Or in the case of flying animals, they eat everything they need and then leave.
There are two main types of pests that affect crops: Phytopathogens and crop-eating insects (the latter can not have the ability to fly. As we mentioned, we can not consider them as pollinators).
It is necessary to consider that the insects of each region are very difficult to exterminate with chemical methods, since they are animals native to a region.
In general the damages that they cause to the plants and the culture in general are:
Absorption of the sap and liquids that keep plants alive.
Consumption of peripheral areas of the plant leaf.
Exponential decrease of fruit plant growth.
Complete infection of some fruits.
Main groups of phytopathogens that can adhere to the plant are the aphids, commonly called aphids or mites. Their reproduction is quite accelerated and they are quite unpleasant to the eye, because the injuries that cause in the plants are quite notorious.
They are most popularly known, they are locusts and caterpillars that feed on mature crops, eating all the leaves and even some small stems.
For both cases there are specialized options for eradicating pests.
When we talk about eradicating, we are not talking about killing everything that is close, as we would with insecticides. But to repel our plants the pests whit the use of barriers. Although chemical and physical alternatives exist for this. Physical alternatives represent minimal repercussion. Chemical agents can not pollute the soil, or water, and better yet, not consumers.. As we have already mentioned, it is only a matter of keeping the pests mentioned above away.
How effective are these barriers?
Obviously it depends on the insect we are fighting against. Any one of them is undesirable. But it would be naive to think that any mesh or material we have on hand will be useful. There are plenty of presentations for these specialized meshes for each plant. In worm breeding, some nets can be used because they are sophisticated enough to protect worms and their enclosures from other animals such as cockroaches (which can feed on the same material that worms are consuming).
Where can I find a supplier who will provide me with all the proper equipment for the installation of these tools and barriers?
One of the most recommended, economical, with a very wide catalog and good attention is HORTOMALLAS.