��bq��L>�z\Ԗ����&B��ƃ\��l�AvN��CI����6��¾�4\�����.=O�������έ������z �/e!�#��Pܜ-��P�H�\�M�p��ˤz#`6F� Pink Boll Worm. 0000166010 00000 n Insecticide for thrips control. Spider Mites - Twospotted or carmine spider mite adult female and spherical shaped egg. 0000001885 00000 n Under favorable growing conditions, cotton can sometimes recover completely from early thrips damage. 1717 0 obj <> endobj xref 1717 39 0000000016 00000 n Often combined with – plant virus, fungal diseases. %PDF-1.3 %���� Sometimes called lygus bugs, tarnished plant bugs lay their eggs in the stems of the cotton plant and in the ribs of the leaves. 1. The south Punjab cotton growing districts received a heavy spell of rains a couple of days back which brought a surge in pest attacks. Sunken streaks and patches – leaves and stems Colored spots or patches – usually silver-white Stunted growth – buds (flower and leaf). Other telltale symptoms on leaves are that these spots often turn a silvery-white color. Cotton (Gossypium hirsutum L.), being a cash and fiber crop is of high significance in Pakistan. This flattens the leaf in the area. According to a Cotton Foundation-funded study by Mississippi State’s Entomology and Plant Pathology Department in 2007 ― the latest data available ― thrips cost U.S. growers 145,040 bales. 0000014143 00000 n Thrips are tiny insects that are mainly active at night. Other biocontrol agents include pathogenic fungi and parasitic nematodes. A few of these economically significant crops in Florida are strawberry, tomato, pepper, cucurbits, cotton, and ornamental flowers. 0000018510 00000 n Prepared By: Bishnu Prasad Ghimire 2. Predatory thrips are under investigation. Thrips Thrips attack leaves, leaf buds, and very small squares, causing silvering of the lower leaf surface, deformed or blackened leaves, and loss of the plant terminal. 0000003217 00000 n 0000005725 00000 n “Tobacco thrips are the primary species of thrips that will attack cotton. Thrips can cause different types of damage to your plants. Major Insect of cotton 1. 0000030635 00000 n 0000174908 00000 n Thrips on daisy. As a result, you typically see the damage they do well before seeing the insects themselves. 0000036574 00000 n The primary species that attack cotton are: black, granulated and variegated cutworms. 0000165591 00000 n Creontiades Plant Bug - Creontiades nymphs are similar in appearance to cotton … THE present cotton crop is under mild pest attack mainly by mealybug and thrips in patches of cultivated area in Sindh. Thrips are a pest of seedling cotton. Thrips are a pest of seedling cotton. 0000148165 00000 n 0000021561 00000 n 6). Thrips damage is most evident during cool, wet periods when seedling cotton plants are growing slowly. For example, Thrips tabaci damages crops of onions, potatoes, tobacco, and cotton. Thrips have “punch and suck” mouthparts that allow them to punch a hole in a leaf cell, insert their maxillary stylets, and suck up the cellular fluids. In 2016, the average loss from thrips damage in an affected cotton field was about 10 percent while reniform nematode damage was around five percent. 0000006013 00000 n 0000003285 00000 n THE present cotton crop is under mild pest attack mainly by mealybug and thrips in patches of cultivated area in Sindh. h���A 0ð4t�y\Gc���������z�C. Light thrips infestations tend to delay plant growth and retard maturity. trailer <<60FF36A92A2748D7BF0FC6D0CF6346CF>]/Prev 452495/XRefStm 1666>> startxref 0 %%EOF 2261 0 obj <>stream The pests are different. 0000028036 00000 n 0000165204 00000 n By far, thrips pressure is consistent enough to warrant preventative control. These tiny, barely visible, splinter-like insects are important pests during the first couple of weeks after plants emerge. 0000011755 00000 n 2224 0 obj <> endobj xref Yellow, black, or brown are common colors for adults, and the larval stages tend to be yellow or green. From the temperate zone to the tropics, thrips have over 100 host species. According to a Cotton Foundation-funded study by Mississippi State’s Entomology and Plant Pathology Department in 2007 ― the latest data available ― thrips cost U.S. growers 145,040 bales. Both attack seedling cotton, during the early growth and development stages. Cotton leaf damaged by thrips feeding. 0000155589 00000 n 0000014839 00000 n Rain, blowing sand, wind, residual herbicide damage, and seedling diseases can worsen thrips damage. This may turn brown in time. They feed on the terminal tissues and can be particularly damaging when temperatures are cool. It attacks the... American Boll Worm. Sucking pests like aphids, jassids and thrips weaken plants by sucking the sap from the tender new growth. %PDF-1.4 %���� Thrips release enzymes that break down the inside of the plant into a nutrient-rich soup. These may occur as curls, rolls or folds, or as alterations to the expansion of tissues causing distortion to leaf blades. h�b```b``����� 9�A���bl, >#����*��@6�&�N NoF[�+l� q���SeC�Ё �hPl*�Kq���^������W��+*�WPp�z-�r��¥���4C�^�ͣ�]uy\M�R֠���FJiV��K._R��i�R��T^����e��M�~�C�j�����Q�@�Phg锵"�&Eڭ–T�W��85h��������44N The growers have observed Thrips, Whitefly, Jessed, pink bollworm and Armyworm pests active destroying their crops. 0000174836 00000 n 0000174623 00000 n Sylepta derogata is also called as the cotton leaf folder. Read also: Adults and larva both feed on the same plants. They feed on the terminal tissues and can be particularly damaging when temperatures are cool. Thrips are slender, straw-colored insects about 1/15 inch long, with piercing-sucking mouthparts (Fig. “Every time the plant puts on a new leaf, it becomes less susceptible to thrips,” Roberts said. 0000050589 00000 n 0000156132 00000 n 0000020227 00000 n While thrips can attack and injure cotton plants upto the 4-leaf stage, the threat of yield loss shrinks as the plant gets larger. 0000002783 00000 n 7). They said now new heat resistant varieties and filtered pesticides are needed. What are thrips? ���6نҧ��Z_/ѱ���wzp��L�u�۰igQe���a���E��,Óq �Y˂ML��]�'t�,>���;��G_�'���2�V�V���0�a(-�� 6?���M`����͐��ʶM�$��6^�wK�^B���0h���(~^EB�4�d���H�m>�O#��tk�%I`k��Z�.�� Thrips eat grasses as well as cotton, and usually begin with the grass but move on to feed on cotton when the grass begins to go to seed. Under some conditions, heavy infestations may reduce stands, stunt plants, and delay fruiting and maturity. This depends both on the plant species and the type of thrips. 0000003340 00000 n Chilli thrips attack Houston roses, landscape plants Hurricane Ike could have spread the pest beyond the area. 0000004995 00000 n Thrips attack leaves, leaf buds and very small squares and may cause a silvering of the lower leaf surface, deformed or blackened leaves, terminal loss and square loss. 0000155518 00000 n They can retard growth but also are sometimes blamed for more damage than they cause. 0000010951 00000 n Uncontrolled, they reduce stands, retard maturity and lower yields. However, small dark spots can also be observed on plants attacked by other insects such as lace bugs. Top 10 Insect Pests of Cotton in Pakistan 1. Bollworms, which belong to the insect order Lepidoptera, attack cotton plants at different stages, though the feeding and breeding activities intensify as the crop matures. 0000144427 00000 n 0000005866 00000 n Several species of thrips attack every cotton field every year.

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