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Series

1980

Historical Materials from University of Nebraska-Lincoln Extension

Corn

Articles 1 - 3 of 3

Full-Text Articles in Education

G80-521 Common Stalk Borer In Corn (Revised April 2000), Robert J. Wright, Thomas E. Hunt, Keith J. Jarvi Jan 1980

G80-521 Common Stalk Borer In Corn (Revised April 2000), Robert J. Wright, Thomas E. Hunt, Keith J. Jarvi

Historical Materials from University of Nebraska-Lincoln Extension

The life history and appearance of common stalk borers is described, along with information on damage they can cause, economic injury levels and ways to control them in corn.

In the past, the common stalk borer, Papaipema nebris, has not been a major pest of corn in Nebraska. Stalk borer damage in corn commonly is confined to occasional plants in the first few rows near field margins, fence rows, grass terraces and waterways. In addition to attacking corn, this insect attacks over one hundred other species of plants, including ornamentals, broadleaf weeds and grasses. It may feed on soybeans as ...


G80-526 The Effect Of Weather On Corn: Preseason Precipitation And Yield Of Unirrigationed Corn, Ralph E. Neild Jan 1980

G80-526 The Effect Of Weather On Corn: Preseason Precipitation And Yield Of Unirrigationed Corn, Ralph E. Neild

Historical Materials from University of Nebraska-Lincoln Extension

This NebGuide examines the results of studies done on the effects of weather on unirrigationd corn.

Studies of the effects of weather on unirrigationd corn in Nebraska between 1950 and 1974 show the following four factors to be closely related to yield:

Technology--the availability of better hybrids, nitrogen fertilizer, herbicides, insecticides and other improvements have resulted in a yield increase averaging 1.3 bushel per acre per year since 1950.

Preseason precipitation--that which occurred between September 1 and May 15 had a beneficial effect. Yield increased on the average of 1.1 bushel per acre for each inch that preseason ...


G80-509 Canada Thistle, Robert G. Wilson Jan 1980

G80-509 Canada Thistle, Robert G. Wilson

Historical Materials from University of Nebraska-Lincoln Extension

The growth and control of Canada thistle is covered here.

Canada thistle plant

Canada thistle [Cirsium arvense (L) Scop.] is a native of Eurasia and was probably introduced to America around 1750. Since that time it has spread throughout the northern part of the United States. Canada thistle is estimated to infest 800,000 acres in northern and western Nebraska.

A perennial that reproduces from seed and by an extensive root system, Canada thistle is dioecious, with the male and female flowers on separate plants. For viable seed to be produced, both male and female plants need to be present.