Bug Trigonotylus Ruficornis

Bug Trigonotylus Ruficornis

Pest Type: Rice Pest

Row: Hemiptera-Hemiptera

Family: Horsefly-Miridae

It is widespread in Russia everywhere, it damages rice, all cereal grains, and wild plants.

The body of an image is elongated, slender in shape, 4.7-6.4 mm long, from green to yellowish-white. The head is pointed, dull, greenish-yellow, with small brownish eyes; antennae placed before eyes, their length slightly less than body length. They, as well as the head, limbs sometimes with a reddish tinge. Larvae are greenish, covered with a light fluff and separate dark hairs. The eggs are pale green, about 1 mm long.

The eggs laid by the females overwinter in the fall on winter and cereal weeds, often behind leaf sheaths. In the Black Sea region, larvae of the first generation develop on winter pieces of bread and various cereal weeds: fescue, wheatgrass, wheatgrass rootless, ryegrass, blackberry, chicken millet, and mouse.

Development continues during April and at the end of it, at the beginning of May, adult insects appear. They fly to rice, other cereals, where the second and third generations develop and damage. In June-July, embryonic development lasts up to 10 days, and larval nutrition lasts 20-24 days. In the first half of August, the flight of the third-generation imago begins mainly on irrigated crops, cereal grasses, wheat harvest, summer and autumn crops of cereal grasses. From the end of May to the end of October, all three generations are not clearly distinguished, and all stages of the development of cereal bugs are simultaneously found on plants. Three generations develop throughout the year.

The nature of the damage typical for bugs is the suction of juice in the stems, leaves, panicles. Due to damage, the upper half of the leaf turns yellow and dries out, young plants lag behind in growth. Damage to the ovary in panicles, ears in the flowering phase and milk ripeness increases the damage to the grain, weakness, reduces germination.

Protective measures. Stubble husks, deep plowing, weed control, carrion stairs. Spatial isolation of rice fields from crops of grain and forage cereal crops. Spraying rice during the tubule-milk ripeness, when the EPV reaches 40-50 individuals / 5 strokes with a net, or 150-200 individuals / m2. Twice the use of insecticides is allowed. The propagation of bedbugs often occurs in separate centers and in the marginal bands, which are better processed than completely.

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