. The standard cyclopedia of modern agriculture and rural economy, by the most distinguished authorities and specialists under the editorship of Professor R. Patrick Wright ... arvensis), andpowerfully assists in injuring the young turnipcrops by puncturing the leaves with its ros-trum. It is from f to 1 line in length, blackwith a coppery tinge; the wing cases are oftengreen or blue, with punctured furrows, andlines of minute hairs between them. Ceutorrhynchus sulcicoliis (the Tur-nip-gall Weevil) causes the lumps upon turnipsand swedes, and also cabbage. It deposits itseggs in the rind, whic
. The standard cyclopedia of modern agriculture and rural economy, by the most distinguished authorities and specialists under the editorship of Professor R. Patrick Wright ... arvensis), andpowerfully assists in injuring the young turnipcrops by puncturing the leaves with its ros-trum. It is from f to 1 line in length, blackwith a coppery tinge; the wing cases are oftengreen or blue, with punctured furrows, andlines of minute hairs between them. Ceutorrhynchus sulcicoliis (the Tur-nip-gall Weevil) causes the lumps upon turnipsand swedes, and also cabbage. It deposits itseggs in the rind, which hatch beneath it andbecome maggots, forming galls which increasein size until the larvse are full-fed, when they eat their way out, to undergo their transforma-tions in the earth. In the spring the beetleshatch irregularly. Numbers also occur in earlysummer. From midsummer to September thelife-cycle takes about fifty days, in spring late broods remain in the larval stage intothe winter, and even through it. The beetlesare very similar to C. assimilis, but are shiningblack, thickly punctured, with a visible channeldown the trunk; there are deep furrows on the. Turnip-gall Weevil {Ceutoirhynchtis sulcicoUis) 1, Gall lormed by the weevil; 2, maggots in gall; 3, maggot,magnified; 4, 5, galls from which larvae have eaten their wayout; 6, the weevil, natural size; 7, weevil, magnified; 8, thighof the weevil. elytra, with very short hairs between them, andall the thighs have a tooth beneath. The mag-got is pearly white, footless, and curved, andwith a Drown head when full grown, and stilllying in the nodular gall it measures | in. Thelength of life of the maggot is very variable, itmay be four or fourteen weeks. Land shouldbe deeply ploughed after an attack and wellrolled, and no crop liable to attack grown nextseason. Dressing with gas lime does good, espe-cially after cabbage. All stumps of the lattershould be burnt, and the young plant dibbledin with some soot and lime.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectagriculture, bookyear
