As the human population continues to grow, more and more crops are needed to meet this growing demand. This has increased the use of insecticides to increase crop yield per acre. Insecticides are agents of chemical or biological origin that control insects. Control may result from killing the insect or otherwise preventing it from engaging in behaviours deemed destructive. Insecticides may be natural or manmade and are applied to target pests in a myriad of formulations and delivery systems (sprays, baits, slow-release diffusion, etc.). The science of biotechnology has, in recent years, even incorporated bacterial genes coding for insecticidal proteins into various crop plants that deal death to unsuspecting pests that feed on them.

Harmful impacts of insects in agriculture : There are many types of agricultural pests. Some insects feed directly on the plants, for example caterpillars eat leaves or damage fruits, and aphids suck juices from the plant with their beak-like mouthparts. Other insects do damage because they can transmit plant diseases, for example whiteflies and aphids can transmit virus diseases from one plant to another. Also the harvested crop can still be attacked by insects. All kind of storage insects such as the rice weevil and the rice moth can cause big damage to stored rice and other grains. Every year millions of dollars are lost because of insect damage in agriculture.

What is cotton bollworm : It is also known as pink bollworm . Cotton bollworm is a problem in growing cotton. Cotton bollworm moths are about 0.75 inch long, with a wing span of 1 to 1.5 inches. Eggs are spherical, flattened, with 10 to 15 perpendicular rows of toothed ribs. Newly hatched, first-instars larvae have several rows of dark tubercles along the back, each bearing one or two bristles. Larvae range from olive green to dark reddish brown in colour and can be best distinguished from most other caterpillars (except the budworm) by the tiny spines, visible under a hand lens, that cover most of the body surface. Bollworm larvae must be at least in the third instars in order to be distinguishable.

Impects of cotton bollworm : Cotton bollworm larvae damage bolls and squares. Larvae chew holes into the base of bolls and may hollow out locks. Moist frass usually accumulates around the base of the boll. Larvae may also chew shallow gouges in the boll surface, which can become infected with rot organisms. Squares injured by cotton bollworm usually have a round hole near the base. Fifth-instar larvae are the most destructive; they not only damage more fruit than do earlier instars, but they damage larger fruit that are harder for the plant to replace.

HPM’s Hero no-1 wreaker of cotton bollworm : Hero no-1 has unique chemical properties, which result in excellent control of cotton bollworm .It has long systemic effect i.e. immediately after spray it is absorbed by the plants and thus give longer protection to the sprayed crop. These are the some important points about Hero no-1: Hero no-1 is highly effective against all types of bollworms complex on cotton. It is recommended for control of cotton bollworms by Punjab Agricultural University. Cypermethrin is widely used Pyrethroid for control of cotton bollworms. It has extra power due to synergistic action. It has strong ovicidal, larvicidal, adulticidal action. It is more effective against late instars larvae. It has excellent control of hard to kill heliothis, bollworms and other chewing insects. It gives effectiveness at a lower dosage with higher yields and cost effective. It gives long lasting protection from insect pests and cost effective.