Natural Insecticide

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Non chemical methods some times fail to prevent extreme insect damage in the garden. At that time, the use of insecticides may be the only option left to save the crop. When harm becomes great enough to warrant crisis measures, organic gardeners often will want to use natural insecticides and diverse homemade botanical sprays, instead of synthetic organic chemicals. The insecticide used must have low toxicity to man and to other warm-blooded animals. Insecticides ought to be used only when needed and in strict accordance with label directions. A good kind of insecticides allows these materials to be used efficiently without harming the environment. The following information might help to use a natural insecticide for their specific needs like

1. Pyrethrum is a botanical insecticide. This toxic insecticide is derived from the flowers of a species of chrysanthemum. The material causes rapid paralysis of most insects but the insects generally recover unless the pyrethrum is put with a synergist or other poison.

2. Pyrethrum mixed with synergists like piperonyl butoxide or piperonyl cyclonene increases toxicity and creates longer, residual action and is used extensively in space sprays, household sprays, crop sprays and dusts.

3. Nicotine insecticide - Pure nicotine is a tobacco removes highly toxic to warm-blooded animals. The insecticide usually is marketed as a 40% liquid concentrate of nicotine sulfate that is diluted in water and applied as a spray. Dusts can bother the skin and are not normally available for garden use.

Names of natural insecticides:

1. Sabadilla is acquired from the seeds of a lily-like plant and acts as both a contact and stomach poison for insects. It is not mainly toxic to mammals but it does cause irritation of the eyes and respiratory tract. A mask must be worn while working with this insecticide. This material declined rapidly when exposed to light and can be used safely on food crops shortly prior to harvest. Usually Sabadilla is used as a 5 to 20% dust or as a spray.

2. Rotenone is got from the extraction of derris plants. This general garden insecticide is safe to plants, highly toxic to fish and many insects, fairly toxic to mammals and leaves no harmful remains on vegetable crops. It acts as together a contact and stomach poison to insects. It is slow acting and in the presence of sun and air, its use is lost within a week after appliance.

Use of neem as natural insecticide: Neem oil is a take out from the Neem tree. This tree spread readily from cuttings, stumps, tissue culture or seeds. It is extensively used as a shade tree in many areas because it tolerates a wide range of conditions. The neem tree has several medicinal uses. It has been used as an antiseptic and diuretic.