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SAR can provide high-resolution imagery of earthquake-prone areas , high-resolution topographic data , and a high-resolution map of coseismic deformation generated by an earthquake . Lesion delimitation by the veins should make you suspicious of nematode , however , examination with a 10 hand lens is essential . Fungicides may also be applied after infected portions of the leaves are cut off to prevent further infections . Make sure that soil and light requirements are met and that the roses are planted at the correct depth . If you have determined that your plants have Sclerotium rolfsii , and other control measures are unsuccessful , you may wish to contact a commercial applicator to discuss the use of chemical controls . Some research indicates that the use of oat straw mulch may reduce leafhopper numbers . The use of Geographical Information Systems ( GIS ) is becoming commonplace in the Earth sciences , as well as in all aspects of land use management .