Beneficial Organisms 2

in Keycheck7 Pest Management

Palaycheck - Pest Management

1. MIRID
Tagalog name: berdeng atangya

Identifying marks: Adults are green with long folded wings and long antennae. Nymphs are also green, with long antennae, but with short wings. They have black spot on their back. They are usually seen at the base part of rice tillers where planthoppers and leafhoppers are also located. Their presence in rice fields can be known by two ways. Tap the base of the rice tillers’ planthopper and leafhopper nymphs will lodge along with the green-colored nymphs and adults on the water surface. They sting like mosquitoes. They are attracted to light traps and can fly.

Food: They search for eggs of planthoppers and leafhoppers by tapping their antennae on the leaf sheaths. On locating the eggs of their enemy in plant tissues, they pierce through their mouthparts and suck the egg contents. They prefer eggs of brown planthoppers and striped stem borers. Young nymphs of planthoppers and leafhoppers are also eaten. Each mirid consumes 7-10 eggs or 1-5 hopper nymphs a day.

2. GROUND BEETLE
Tagalog name: tigreng salagubang

Identifying marks: Adults are guitar-shaped and reddish brown. They have long thin necks connecting the head and abdomen. Black shiny larvae (grubs) go into the soil prior to pupation. Adults and larvae can fly and feed on nymphs of plant and leafhoppers, and young larvae of leaffolders.

Food: They prefer planthoppers to leafhoppers. Others prey on hairy caterpillars, semiloopers, and newly hatched larvae of stem borers. They feed inside the folded leaves made by leaffolder larvae. They eat 3-5 larvae per day.

3. LADY BEETLE
Tagalog name: pagung-pagongan

Identifying marks: Shape of the adult is like that of a Volkswagon (oval) car. They are mostly orange with or without spots on the wings. Larvae (grubs) are dark grey to brown, wingless, and resemble a crocodile. Adults can fly.

Food: Adults are abundant when rice is at the flowering stage, and are observed feeding on the pollen. They prefer to feed on the nymphs of planthoppers than leafhoppers, as planthopper nymphs are slow-moving. They also feed on newly hatched larvae of leaffolders and stem borers. They also feed on exposed eggs of harmful organisms. The larvae are more voracious than adults.

4. DAMSEL FLY
Tagalog name: tutubing karayom

Identifying marks: Adults can fly short distances, unlike the dragonfly. Early mornings they are seen sitting in leaf tips and drinking the dew. Nymphs do not have fully developed wings, and often attach themselves to the lower part of the rice tillers. They can climb up rice stems to search for hopper nymphs.

Food: They prey on adults and nymphs of planthoppers, leafhoppers,and leaffolder adults.

5. DRAGONFLY
Tagalog name: tutubi

Identifying marks: Forewings are bigger than damselfly wings. Adults can fly long distances. Nymphs lack fully developed wings and are often attached to lower parts of the rice tillers. Their abundance is noticed over the rice canopy in early mornings or when it is cloudy and is about to rain or when the field is being sprayed.

Food: They prey on adult nymphs of planthoppers, leafhoppers, and moths of lepidoptera.

 

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