Weed Weedicide and Weed Control: Principles and Practice

Description

Weed seeds are easily blown into the greenhouse through vents and other openings. Weeds and their seeds can be brought into the greenhouse on infected plant material, tools, and equipment. Seeds can be moved in soil, by the wind, irrigation water, animals and people. Creeping wood sorrel, (Oxalis corniculata), hairy bitter cress (Cardamine hirsuta), prostrate spurge (Euphorbia humistrata), common chickweed (Stellaria media) and other weeds are persistent problems in greenhouses. These annual weeds reproduce primarily by seed, with several generations occurring per year. Prevention and sanitation are the grower’s first line of defense. Weedicide are known as the weed killers or pesticides that are used to kill unwanted plants. The implements used for mechanical weed control shear and tear the surface of the soil resulting in the uprooting of plants. But many of the weeds have deep and extensive roots that cannot be uprooted and majority of them can regenerate. The most common examples are grasses like kans grass, thatch grass and quack grass. To kill such weeds, chemical weedicides are necessary. This book will be helpful to research workers, college and University teachers, Vocational teachers, extension specialists, herbicide sale representatives and progressive farmers. Weed control practices suggested are based on research reports of several workers in this field and his own experience.