The Garden Under Glass
Forfatter: William F. Rowles
År: 1914
Forlag: Grant Richards Ltd. Publishers
Sted: London
Sider: 368
UDK: 631.911.9
With Numerous Practical Diagrams From Drawings By G. D. Rowles And Thirty-Two Illustrations From Photographs
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PESTS AND THEIR EXTERMINATION 301 away with each year, so that there would be no great loss of crop.
Splitting.—Some varieties of grapes are more liable to split in the berries than others. The disease is caused by an overdose of water during ripening, by undue stopping of growths at such a time, and by too moist an atmosphere.
Thrip.—Whether black or white, this is a very harmful
Diagram 65.-To.nato Disease: a, plant flagging through disease; b, stem and fruit attacked ; c, examples of diseased fruit; d, yellowing of fohage.
and disfiguring pest. The black thrip may easily be cleared off by fumigation, but the small white thrip, which is very minute, does not give way so easily to this method. Theie-fore sponging with a good insecticide should be un er-taken. Again I have to recommend the X.L. All insecticide as being the best, although it should be mentioned