Losses to cotton, what to look for and where to find it, being one of a series of articles in relation to crops, their common diseases and insect pests to which they are subject . he latter readilydevour cultivated crops, including cotton. Web wormsare especially fond of the finer and softer grasses in thesouth, such as butTalo grass and Johnson grass. The mature larva, about five-eighths of an inch long,are whitish or dusky or even greenish, with black spin a loose but evidently individual web, rarely more than one worm occupying the same web. This web inclosesmore or less of the fo
Losses to cotton, what to look for and where to find it, being one of a series of articles in relation to crops, their common diseases and insect pests to which they are subject . he latter readilydevour cultivated crops, including cotton. Web wormsare especially fond of the finer and softer grasses in thesouth, such as butTalo grass and Johnson grass. The mature larva, about five-eighths of an inch long,are whitish or dusky or even greenish, with black spin a loose but evidently individual web, rarely more than one worm occupying the same web. This web inclosesmore or less of the foliage of an infected plant. The larva are very active, feigning- death when dis-turbed or spinning a thread and dropping to the ground,slipping out of sight in crevices or loose earth. Most ofthe feeding is done at night, the larva usually resting inthe web by day until the last stage, when they are activeduring the daytime. Plant Lice While the cotton i)lant is yet young and tender, thedamage which plant lice do by gathering upon the youngshoots and tender leaves, and curling and distorting them,may be very considerable. Eecent investiuations have shown that these insects. COTTON LOUSECluster of lice on cotton leaf (greatly enlarged). are identical with the species which occurs commonlythrough the south and the north upon melons and cucum-bers and which derives its food from a great variety ofplants besides cotton. As the cotton plant grows larger and stronger, thework of the cotton ai)hi8 becomes of no imi)ortance, partlybecause of the hardier condition of the plant, but prin-cipally because the many natural enemies of the lice in-crease to such numbers as nearly to annihilate them. The insects are small greenish, bluish, or brownishlice, almost unnoticeable except when they congregate inclusters on the ])lants, and they are too easily identifiedand too well known to need further description here. 19 PART IIDISEASES To know tlie disease is the coiinnem-tineiit of tlie cure. C
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