Appendix to the Journals of the Senate and Assembly of the ..session of the Legislature of the State of California . es by puncturing the leaves and sucking the sap, and caus-ing much damage to the fields of cabbage. This pest is very difficult tokill, and the contact sprays which usually kill sucking insects have tobe applied in such strength that they generally ruin the plant. Thehibernating bugs which gather in clusters on old dried plants duringthe winter can be collected or killed by very strong spra5^s. Collectingthe winter brood by handis too expensive and tootedious an undertaking ifdo
Appendix to the Journals of the Senate and Assembly of the ..session of the Legislature of the State of California . es by puncturing the leaves and sucking the sap, and caus-ing much damage to the fields of cabbage. This pest is very difficult tokill, and the contact sprays which usually kill sucking insects have tobe applied in such strength that they generally ruin the plant. Thehibernating bugs which gather in clusters on old dried plants duringthe winter can be collected or killed by very strong spra5^s. Collectingthe winter brood by handis too expensive and tootedious an undertaking ifdone on a large scale. Thisinsect has been reportedfrom a great many sectionsof the State as doing con-siderable damage, but muchof this damage can be over-come by destroying thewinter brood. Box-Elder Plant-bug{ Leptocoris trivittatus).(Fig. 22.) Although thispest is a feeder on thebox-elder tree, it does attimes attack fruit trees,such as peaches, plums,and apples, and also vari-ous plants of the flowergarden. Its habits aresomewhat similar to thoseof the Harlequin cabbage-bug, especially the winter hibernating.
Size: 1987px × 1258px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, bookidappendixtojo, bookyear1853
