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With the passage of the Multiple Use Sustained Yield Act of 1960, the U.S. Forest Service has managed its 193 million acres of forest and grassland fo...
Read moreYoung plants of 5 species were grown in pots for 8-16 days in daylight under shades constructed of 6-mm strips. The shades were fixed or were made to ...
Read moreAgricultural and invasive weeds are major threats to managed and natural ecosystems, costing billions of dollars annually. Models for arable and invas...
Read moreArtificial reefs are used around the world for many purposes, including widespread deployment to increase fishery yields. These reefs are well-studied...
Read moreCompetition from weeds (Agropyron repens, Stellaria media, Poa annua and others) in the first growing season hastened foliage senescence and reduced b...
Read moreThe relationship between the wt. of above-ground biomass/unit area (y) the number of plants/unit area and time can be expressed in terms of arbitrary ...
Read moreExperiments were made in Ontario, Canada, over 12 wk in a greenhouse and 3 yr in the field with different proportions (100; 75/25; 50/50; 25/75; 100) ...
Read moreThe following is based largely on the author's summary. During investigations in Britain in 1968 on the effect of weed control on the incidence of Pie...
Read moreSome short-term experiments in applied ecology and agricultural research have demonstrated that nutrient applications in semi-natural grasslands can m...
Read moreThe principle threats for sustainable production of wild collected medicinal plants are related to ecological factors, such as endemism, and botanical...
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