Search results
Results from the WOW.Com Content Network
A 1987 study found evidence of a possible biocontrol strategy for bacterial wilt of turf grass. The researchers found that antiserum to Pseudomonas fluorescens or Erwinia herbicola from hosts which have survived infections by the corresponding pathogens is capable of reducing wilt symptoms in turf grass caused by Xanthomonas translucens. The ...
Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen. Plants, shrubs and trees are weakened by the spots on the leaves as they reduce available foliar space for photosynthesis. Other forms of leaf spot diseases include leaf rust, downy mildew and blights. [4]
Oak wilt is a fungal caused by Bretziella fagacearum, is a disease originating in eastern Russia.It can slowly or quickly kill an oak tree when the tree reacts to the fungus by plugging its own cambial tissue while attempting to block the spread of the fungus.
This native shrub has small glossy leaves that turn many shades of red in the fall. Both red chokeberry and black chokeberry have clusters of small white flowers in spring and small berries in the ...
Too many leaves can kill grass. Mulch mowing can incorporate about six inches of leaves back into the soil, after which the leaves must be removed to prevent shading and smothering the lawn over ...
Dry leaves, along with dry grass, dead plants, wood chips, shredded paper, and sawdust are examples of carbon to place in the compost. Oxygen or green material includes grass clippings, produce ...
The reduction of chlorophyll production in leaves due to decreased sunlight in the autumn explains why some leaves turn yellow. However, the yellow color can attract aphids, so some trees turn the leaves red instead by injecting a bright pigment. [8] The loss of chlorophyll may also contribute to the abscission process. [citation needed]
Fall is the best time to fertilize your lawn if you live in the north. Cool-season grasses, such as bluegrass, fescue, and ryegrass, respond well to feeding in early September and late fall (end ...