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Noncompetitive Effects Of Morning Glory On Growth Of Soybeans, D. R. La Bonte
Noncompetitive Effects Of Morning Glory On Growth Of Soybeans, D. R. La Bonte
Masters Theses
Competitive effects of weed infestations in soybean fields can severely reduce yields. Noncompetitive factors (allelopathy) may also be involved. Soybeans (Glycine max (L.) Merrill, Asgrow A 3127 mid group 3) show a marked reduction in growth due to root exudation, leaf leachate and total plant extracts from white-flowered morning glory (Ipomoea lacunosa L.).
Some Effects Of Simulated Acid Rain On Cool Season Turfgrasses, Robert C. Morrow
Some Effects Of Simulated Acid Rain On Cool Season Turfgrasses, Robert C. Morrow
Masters Theses
Six varieties of cool season turfgrasses were exposed to simulated acid rainfall with treatments consisting of a sulfuric acid solution, a nitric acid solution, and a 50-50 mixture of both. Each solution was used to make "acid rain" of pHs 3.0, 2.5, 2.0, and 1.5.
Height measurements showed decreases in growth throughout the experiment for all treatments except the nitric and 50-50 acid treatments at pHs of 2.0 and 1.5, which maintain fairly constant growth. Analysis of nitrate, phosphorous, and potassium levels in the soil indicated heavy leaching of the nitrates and potassium from most soil samples, which probably account …
Autumn Olive Reproduction In Three Illinois State Parks, James Daniel Nestleroad
Autumn Olive Reproduction In Three Illinois State Parks, James Daniel Nestleroad
Masters Theses
No abstract provided.
Vegetation Analysis Of Three Zones Of Belmont Prairie, Dupage County, Illinois, Susan Eckert Ruta
Vegetation Analysis Of Three Zones Of Belmont Prairie, Dupage County, Illinois, Susan Eckert Ruta
Masters Theses
Belmont Prairie is located in Downers Grove, DuPage County, Illinois, and is one of the few preserves of a native tall grass prairie. It is located in the Morainal section of the Northeastern Morainal Division, and harbors over 100 species of native prairie plants which are typical of the community type. Three vegetation zones were sampled for species composition and both frequency and relative frequency. These areas are as follows: Dry mesic upland area, sedge meadow, and transitional area.
The upland dry mesic zone had diverse vegetation including forb and grass species such as Parthenium integrifolium, Silphium laciniatum, …