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Filtering by: Creator Pinchot, Gifford, 1865-1946 Advisor Appleby, Arnold P.

The influence of certain environmental and edaphic factors on germination and emergence of Bromus tectorum L.

Creator:

Thill, Donald Cecil, 1950-

Abstract:

The influence of certain environmental and edaphic factors on the germination and emergence of downy brome (Bromus tectorum L.) was investigated in the laboratory. A preliminary study was conducted to determine the osmotic stability of mannitol and polyethylene glycol 20,000 (PEG) solutions, which are commonly used to simulate water stress...

Resource Type:

Dissertation

Full Text:

period, various solutes, such as NaC1 (Uhvits, 1946; Manohar, 1966; Sharma, 1976), glucose, sucrose
The response of tomatoes to atrazine as affected by magnesium and photoperiod

Creator:

Brenchley, Ronald Glenn

Abstract:

Studies were conducted to determine the nature of the interaction between atrazine (2-chloro-4-ethylamino-6-isopropylaminos- triazine) and magnesium on tomatoes. This interaction was studied under two light regimes: continuous light and a 12-hour photoperiod. Tomato plants were grown in sand cultures at three levels of magnesium fertilization. Four weeks after planting, atrazine...

Resource Type:

Dissertation

Full Text:

plants are frequent- ly distinctive and easily recognized according to Hambidge (1946). The leaves