The Advantages and Disadvantages of Organic Pesticides .Quite easy to make pesticides from organic material remains of plants containing pesticide ingredients. I submit the following summary of the manufacture of the natural pesticides with some description of the benefits of the advantages and disadvantages.
Excess of pesticides made from raw vegetable such as: Degraded / rapid decomposition by sunlight. Has the effect / influence quickly, stopping appetite even though insects rarely cause death. Generally low to animals and relatively safe in humans (lethal dosage (LD)> Oral 50). Has a broad spectrum of control (and nervous stomach poison) and is selective.
Can be relied upon to overcome pest resistant to synthetic pesticides. Phytotoccisity is low, that is not poison and destroy crops. While the weakness of the use of vegetable pestsida as follows: Quickly decompose and its application should be more frequent. Of low toxicity (not directly kill insects / have a slow effect).
Production capacity is still low and can not be done in bulk quantities (for pesticide plant material has not been widely cultivated vegetable in particular). Availability in stores is still limited agricultural The material above is commonly made by blender, boiled and soaked before it is sprayed. For this type of seed soaked first then crushed / blended.
While the types of leaves and tubers can be blended and taken the extract. Prior to use the above materials are mixed with a solution of soap / liquid soap tipol and soaked overnight, after it is ready for use. Some of Organic Pesticides:
-Tobacco (Nicotiana tabacum) Nicotine is a compound found. Mangandung dried tobacco leaves 2-8% nicotine. Nicotine is a neurotoxin reacted very quickly. Nicotine acts as a contact poison for pests such as; caterpillar destroyer leaves, aphids, thrips, and aphids as well as controlling fungi (fungicides).
-Neem (Azzadirachta indica) The active compounds contained in neem is azadirachtin, meliantriol and salanin like onions and it tastes very bitter. Of flour shaped leaves, or fluid of seeds / fruit. Effective to prevent eating the insects and plants to prevent insect approaching (repellent) and systemic. Neem can also create sterile insects, because it can interfere with hormone production and life insects. Neem has a broad spectrum, effective for the control of soft-bodied insects (200 species) include: grasshoppers, thrips, caterpillars, leaf hoppers, white butterfly, etc.. Besides, it is able to control fungus (fungicides) in the preventive stage, causing fungal spores failed to germinate. Fungi were controlled among other causes; powdery mildew, rot, leaf smallpox / scab, leaf rust and leaf spot. And prevent bacteria on powdery mildew (powdery mildew). Neem extracts should be sprayed in the early stages of development of the insect, which is sprayed on leaves and can also be sprayed on the plant roots for root uptake or control pests in the soil.
-Tuba Roots (Derris eliptica) Compounds found is rotenon. Rotenon can be extracted using ether / acetone to 2-4% rotenon resin, is made into a concentrate of water. Rotenon capable of causing the insect to stop eating. Insect death occurred a few hours to several days after exposure rotenon.
Rotenon can be mixed with pyrethrin / . Is a very powerful cell poisons for insects. Rotenon is widely berspktrum poison, as a contact pesticides and stomach poison and not systemic. Serve as molluscicides, insecticides (insect), acaricides (mites).
-Babadotan (Ageratum conyzoides) local name "Babadotan" plant active ingredients are saponins, flavonoids and polyphenols. And contain essential oils. Approach can prevent crop pests (repellent) and is able to inhibit the growth of the larvae become pupae. Still there are many herbs that can be used as a pesticide plant / botanical active ingredients different.
It is expected that with the use of botanical pesticides, heavy reliance on chemical pesticides can be reduced so that the security for the farmers / users and consumers can be increased from the dangers of pesticide poisoning. Besides environmental sustainability will be maintained and sustained as acid rain. Organic Chemistry as Effective Pesticides
0 komentar:
Post a Comment