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85 > Image 85 of Annual report. 1906

Part of Kentucky Agricultural Experiment Station

f . 48 Bulletin N0. 125. _ THE CLOVER LEAF-BEETLE (Phyt0n0mus pu,m:mtus).This is Z one of the snout beetles, somewhat- resembling the plum curculio in i shape, but smoother. It has been observed by me in Kentucky. The y beetle measures somewhat more than a quarter ofian inch in length. The eggs are placed in clover stems in August, and the grub, hatch- `. ing from them, works upon the leaves, sometimes completely ~ destroying whole crops of clover. Both grubiand adult feed at A night, and are so timid that they cannot_ well be observed since they g drop to the ground as one approaches.- . 'lr - ~ i T1-In Cnovnn STEM-Bonne (Lemguria m0zmdi.)A beetle i_ about onefourth inch long with shining blue-black body and orange- i_ - red thorax produces a rather slender grub that eats out the centers E of the stems. The eggs are thrust into the stems in May or June, A V and the mature insect appears in late July or in August, and con- " tinues as an adult over winter. 'Thisis a Kentucky insect and has Q been observed by me at times eating out the stems of hemp. It . feeds on a variety of plants and has notbeen observed in numbers A sufficient to do greatharm to clover. ~ - 1 THE Cnovnn Roor-Bonne (Hylastcs trifoZii).Tlie miost de- struetive known insect attacking clover is a small, stout, black beetle, about 0.08 inch long, which lays a 'whitish egg from which hatches a rather thick-bodied grub; This eats out the centers of the main it i roots. It was originally observed in New York, but has spread F westward from that Stateand may occur in Kentucky, though I ni have not thus far encountered it; It belongs to a family, most members of which bore into wood and tree-trunks, the clover-infest A ing species being thus somewhat exceptional in habits. i ` g Failure Due to Absence of Lime, Potash, etc. J (5) This is not the place to do more than mention the pos- sibility of failure in some cases resulting from exhaustion of certain ` soil constituents necessary to plant growth. Lime is_ sometimes found beneficial on cloverssick soils, because of its corrective action where the soil has become acid. There are a number of mineral plant foods absolutely necessary to the growth of plants, and the complete absence of any one of them will result in failure in grow-