. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Fig, Erio- phyes gossypii. The adult mite enters the leaf bud of the young cotton- plant, and when these develop, and the leaves are unfolded, the characteristic galls (Fig. 36) are seen. These galls are produced by the irritation caused by the feeding of the mites on the ventral surface of the leaf. This irritation also induces a growth of fine hairs within the gall, among which the mites live. When the mites are fully developed, they leave the galls and wander about in search of leaf buds in which to establi
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Fig, Erio- phyes gossypii. The adult mite enters the leaf bud of the young cotton- plant, and when these develop, and the leaves are unfolded, the characteristic galls (Fig. 36) are seen. These galls are produced by the irritation caused by the feeding of the mites on the ventral surface of the leaf. This irritation also induces a growth of fine hairs within the gall, among which the mites live. When the mites are fully developed, they leave the galls and wander about in search of leaf buds in which to establish new colonies. The remedial measures at present in use for the control of the leaf-blister mite are entirely cultural, and consist in the thorough destruction of all the old cotton two or three months before planting the new crop. This method, com- bined with the picking-off of infested leaves as they appear on the young cotton, has been found to reduce the numbers of the mite to such an extent as to render it practically harmless. Sulphur and lime in equal parts, dusted on the plants at the time when the mites are migrating from one part to another, will be found very useful in checking the increase of this pest. Other species occurimg in the West Indies are Erioj^hyes hucidae which causes the bright-red, felt-like growths on the leaves of Terminalia Buceras; Eriophyes morrisi which causes the spheroidal .swellings on the leaves of Acacia farnesiana and other species; and Eriophyes striafiis which occurs on Eupato^-ium This article completes the series dealing with the Acarina, or Mites, which was commenced in No. 213 of the Agricul- tural Keu's. As was stated in ihe introduction to Part I, the object of these articles has been to give definite information concerning of lifi that are popularly regarded as insects, but which cannot be strictly included among them. It was necessary, in Part I, to recap- itulate the fact that the arthropods, or animals with jo
Size: 1638px × 1526px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorgreatbritainimperiald, bookcentury1900, bookdecade1900
