Scientific name Fulmekiola serratus (Kobus) Synonyms Thrips serratus Kobus is a member of the order Thysanoptera, Thripidae. Alias ​​cane brown horse. Distributed in sugarcane growing areas such as South China, Fujian and Taiwan.
Host sugar cane.
Injury characteristics, nymphs concealed in the sugar cane heart leaves with suction sucking mouthparts suction blade sap, causing damage to the leaves were yellow and white chlorotic scars, severe leaves become yellow-brown, tip curling dry, even the top few The leaves could not be rolled together and the plants were dwarf yellow. The rate of affected plants was 100%, affecting the yield of sugar cane.
Morphological characteristics Adult body length 1.2-1.4mm, dark brown body to dark brown, wings long and narrow, transparent, surrounded by long hair. The length and width of the head were nearly equal, with 1 pair of long bristles near the front of the compound eye, compound eye protruding, 7 horns in the antennae, 2 nd in the section, and the longest in the sixth lap. Section 1-2 dark brown, 3-5 section light, 6-7 brown. The back of the chest is nearly rectangular on the back. Egg length 0.35mm, long oval, slightly curved, white. Nymphs are similar to adults and are yellow-white, with wing buds when they are 3-4 years old.
There are more than 10 generations of living habits. They begin to appear after the spring warmth every year, enter the peak period from May to June, and fall sharply after the fall. The worm can complete one generation in more than 10 days, overlap each generation, and lay eggs in the heart and leaf tissue. Adults and nymphs like drought and backlight environment, hidden in the unfolded heart and leaves. Adults often spread with air currents. Summer drought, slow growth of sugarcane or low water in the sugarcane fields, lack of fertilizer, severe occurrence of thrips. South China 56-12, Yuedan 57-413 and Xintai Sugar No. 2 suffered heavy damage.
Prevention methods (1) Select early-growth varieties. (2) Deep ploughing and applying base fertilizer, irrigation in due course, paying attention to the removal of stagnant water and lowering of water level, increasing fast-acting fertilizers at the peak of humming horses, strengthening field management, promoting the growth of sugarcane, and quickening the development of leaves, can reduce the damage. (3) In the morning, re-spray the heart with 40% Dimethoate or 50% Trichloromethane, 50% Caesarean Loose, and 50% Malathion EC, and use 75L for every 667m2. In addition, 200g of urea per barrel (about 14kg) is used to promote sugarcane growth, and the effect is better. As the thrips breed quickly, they should be reviewed seven days after the drug. In the event of a drought, they should be treated 3 to 4 times in a row.
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