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Hartwig, Nathan L. – 1975
This agriculture extension service publication from Pennsylvania State University examines agronomic weed problems and control. Contents include a listing of the characteristics of weeds, a section on herbicides, and a section on the important weeds of agronomic crops in Pennsylvania. The herbicide section discusses systemic herbicides, contact…
Descriptors: Agricultural Education, Agronomy, Extension Education, Field Crops
Hesser, R. B.; And Others – 1976
This agriculture extension service publication from Pennsylvania State University is a handbook for the water body manager. The bulk of the contents deals with aquatic plant control. The different types of aquatic plants, their reproduction and growth, and their role in the ecology of the water body are introduced in this main section. Also, the…
Descriptors: Biology, Ecology, Environmental Education, Extension Education
Wingard, R. G.; And Others – 1977
This publication, produced by the Pennsylvania Cooperative Extension Service, is a non-technical guide to chemical control of aquatic vegetation. The purpose of this circular is to aid the land owner or manager in managing ponds, streams, and other water bodies for desired uses by managing the vegetation in, on, and around the water. Among the…
Descriptors: Environmental Education, Extension Education, Herbicides, Land Use
