GrowerGuides and tipsAdvanced GuidesPests, problems and diseases

Biological control: how to grow cannabis without hazardous substances

The famous proverb, "My enemy's enemy - is my friend" is also true with plant-damaging insects and pests, so those who want to grow cannabis without spraying it with questionable pesticides can simply use friendly wasps and mites to take advantage of the opportunity to devour the pest population. That's right.

One of the most common problems in growing cannabis is the appearance of pests. Mites, aphids and flying birds that multiply around the plant, suffocate, destroy and eventually destroy it.

In order to get rid of these pests, farmers usually use pesticides - chemical or organic - while ensuring that the plants are not sprayed close to harvest time, of course, to minimize pesticide residues in the finished product.

Since cannabis consumption is usually done by inhaling smoke into the lungs, some pesticides may also pose real life risks.

As mentioned, In the case of cannabis in the medical discourse Pesticides such as Pyrimethanil and Paclobutrazol were found in some of the cannabis packets that reached patients. These materials, according to the position of expert agriculture Dr. Tuvia Jacoby, May even cause death.

In order to avoid these serious dangers, cannabis growers are usually used Organic pesticides - Pesticides are performed using materials based on extracts from plants such as the Indian tree ("Neem tree") or the Australian tea tree.

But anyone who wants to protect himself and his customers even more - would prefer not to use pesticides at all - both chemical and organic.

What is biological pest control?

To do this, use the following methods biological pesticide, Ie, the initiated intervention of the grower in the plant's growing environment and the removal of pests that endanger his health With only predatory insects.

This "initiated intervention" can be expressed in a number of ways, but for Cannabis growers it is mainly expressed in the addition of an organism that will become a natural enemy to the pest and ultimately cause its extinction.

The main advantage of using this method is the fact that the plants are not sprayed at all harmful substances that harm the plant and eventually reach the lungs of the consumer.

The bugs listed can be obtained in most Recommended hydroponics stores (GPO), or, alternatively, specialized companies specializing in biological control, such as Bio-Bee from Kibbutz Sde Eliyahu.

Wasps / Aphidius colemani

Effective against: Leaf Aphids.
price: 125 NIS for 2000 Details.

Wasps and Ephedias

A group of parasitic wasps, usually a surrogate host, serves as a natural enemy against a large number of species of leaf aphids. The adult wasp has a small, thin body (2-3 mm) in black / brown / yellow color. It has brown legs, long black antennae, clear veins on the wings and a lamb.

Ephedia leprosy deals with the problem of anemia in a very efficient way: with its egg-laying tube, it lays a tiny egg, 0.1, into the cavity of the anus. In less than two weeks the parasite develops in the body of the anus as it feeds on its fluids and at the end of the process the anus is dead and its body serves as a cocoon for the small larva. The hepatic larva develops into an adult wasp, which emerges from the dead body of the anus and continues the cycle of life until all the anemias die.

The lifespan of ephedrine leprosy amounts to a few weeks during which it can perform hundreds of laying attempts. When you buy the wasp for biological control purposes, you get a box with sawdust, which contains several hundred pupae of the wasp. Place the box as close as possible to the center of the anus, preferably at the height of the plant. It is recommended to ensure that there are no ants in the vicinity as these may harm the golim.

Wasps Digiplus / Diglyphus isaea

Effective against: The tunnel fly.
price: 125 NIS for 250 Details.

Wasps Digiplus

Lepiglip leprosy is a parasitic wasp size 2 mm with a black color combined with shiny metallic green. The method of leprosy leprosy is by inserting its flask into the flyfly's trawling body while it is still in the leaf. The wasp inserts material into the larva that causes its paralysis. After the larva is paralyzed, the wasp puts an egg or two next to it. Over the next two days the wasp larvae would develop and feed themselves from lifting the fly. They will then be impregnated and planted near a mature wasp fly from the top of the leaf. The adult wasps will last a life cycle in which they will drain the remaining tunnel flies. In the course of her life, this wasp can cast more than 60 eggs.

Most of the wasp will come packaged in a box containing 250, 500 or 1000 details. The wasp should be spread in the habitat by partially removing the lid and lightly tapping the box. The wasps should come out and fly towards the plant. The ideal temperature for wasps is around 30 ° C.

Persimilis / Phytoseiulus persimilis

Effective against: The spider of the web.
price: 125 NIS for 2000 Details.

Persimillus mites

Mice are a group of tiny arthropods belonging to the scabies department. The parasymilis is associated with a predatory group of mites, which are about 1 mm in length, orange-reddish and pearly in shape and long front legs. The younger mites (caterpillar and nymph) are pale pink.

These mites mainly feed on the webs. The female bird of prey searches for a colony of mites that burrow and lays its eggs nearby. A few days later the larvae develop into nymphs (an intermediate stage in the development of the insect). First-class nymphs feed on 4-5 eggs of the macula of the day, second-degree nymphs feed on 6-7 eggs per day, and adult persimilus can eat nearly 10 pests in one day.

The Persimillus seed comes in a bottle filled with vermiculite, containing 2000 or 4000 items. It is recommended to disperse them under temperature between 22 and 28 ° C and relative humidity above 60%.

Akryt Swirski / Amblyseius swirskii

Effective against: Tobacco moth, mites, thrips.
price: 350 NIS for 50,000 Details.

Akrit Swirski

Akrit Swirski is a predatory bird whose habitat in nature is mainly in the Middle East (including Israel of course). Its color varies according to the type of prey. Usually it will be a color ranging from white to bright orange. The rate of development of this mite depends heavily on the environment, with the ideal temperature for it being 25-28 ° C, together with high humidity of 60-70%.

Another thing that improves the rate of development of Akrit Swirski is, of course, the presence of certain pests, such as tobacco moths and the larvae from which they feed, mainly from eggs and their larvae.

Most of the time, the Swirski Skull will reach a fan with a capacity of approximately 50,00. The dish contains a food substrate that feeds the mite until it meets the pest. Spread the contents of the dish on the plants, it is recommended to do so immediately upon receipt of the product.

Orius laevigatus

Effective against: Thrips, leaf aphids, mites, tobacco moth.
price: 330 NIS for 1000 Details.

Pishpus Orius

The prey is based on thrips, small winged insects that pierce the leaf tissue and suck its contents, although it also enjoys snacking on various aphids and sometimes mites. He kills his prey by catching and sucking all the fluids of his body.

At the temperature of 25 degrees Aurius wicket manages to reach a lifetime of 3-4 weeks, during which it manages to kill several dozen pests.

The flea comes packaged in a ccNUMX cc bottle containing Vermiculite and 100-items, at different ages. It is recommended to rotate the bottle before dispersing the pry to ensure effective mixing with hormcolite.

Typhoid Angiros / Anagyrus pseudococci

Effective against: A floury aphid.
price: 300 NIS for 500 Details.

Angirosa leprosy

The female angirosis female is several times larger than the male (2-3 mm compared to 0.8-0.9 mm) and her body color is brown (compared to the black male). The Angirosa leprosy lays a single egg into the body of the host organism. The laying operation takes less than half a minute, and then the larva that emerges from the parasite is nourished by the internal organs of the flour. The 5 undergoes different degrees of development until it is embodied in the anus that becomes parallel to the mummy.

The rate of development of wasp varies according to the environment and especially according to the temperature. At a temperature of 17.5 degrees it will take the wasp to turn from egg to adult as 40 day. In contrast temperature of 35 degrees will take her barely 10 days. In a situation where there are enough aphids to serve as surrogates, the Angirosa leprosy can lay up to 15 eggs per day.

The Seven Moshiach / Coccinella septempunctata

Effective against: Leaf Aphids.
price: 200 NIS for 100 Details (of Mosaic Cryptolamus).

Mushit the Seven

For many generations, ladybugs have been seen as one of the most beloved beetles of the human race. In contrast to the dislike of insects that humans sometimes have, the attitude toward this favorite beetle is quite different.

Its distribution in nature is very broad and can be found in Europe, Asia, North America and North Africa, especially in areas with abundant vegetation.

Its body size reaches 8-9 millimeters and has a pair of red wings with black dots, although its mode of flight is relatively cumbersome.

Mushait is considered so friendly for the breeder because it is a predator fed mainly by harmful mechanisms (especially leafy aphids) and has a tendency to efficiently carry out its feeding without harming the plant itself.

Mushit can eat during her lifetime (usually lasting two to three years) more than 5000 aphids!

Problems of biological pest control

In conclusion, it is important to note a number of shortcomings and omissions to be made regarding biological control:

price - As can be seen from the pricing indicated in the text, in most cases the cost of biological pesticide treatment may be higher than that of chemical or organic pesticides.

time - In some cases the use of biological control will require a little more time to obtain satisfactory results from other methods of pest control.

maintenance - Application of biological pest control requires constant maintenance and monitoring (as much as possible) of the new population entering the habitat, as well as on how to rehabilitate the plant, a process that may be slightly longer than chemical control.

Combining techniques - If the tower decides on the application of biological control in parallel to another method of control (especially with chemical control), it is very important to ensure that the pesticide does not harm the new organism acclimatized garden.

The growth channel

Cannabis growth guides