Ponderosa Pine Provenance Test for Windbreaks in Eastern South Dakota

1985 ◽  
Vol 2 (4) ◽  
pp. 105-107
Author(s):  
Peter R. Schaefer ◽  
Norman W. Baer

Abstract Ponderosa pine has been planted extensively in the northern Great Plains. Many of the plantings, however, have performed poorly or failed because of poor early survival and slow growth. A regional provenance test of 73 ponderosa pine sources was established in 1968 as one means of improving the performance of this species throughout the Great Plains. Results after 15 years indicated that three sources located in north central Nebraska and south central South Dakota were taller than all other sources. The three sources exhibited a height growth 30% above the plantation mean and an average survival 20% higher than that of the plantation as a whole. These sources have also been among the tallest and best survivors in similar tests throughout the Great Plains. Juvenile-mature correlations were strong for 5-year and 15-year height growth. The identification of a relatively small area from which to collect genetically improved ponderosa pine should greatly facilitate the incorporation of these seedlings into tree-planting efforts in the northern Plains. North. J. Appl. For. 2:105-107, Dec. 1985.

2011 ◽  
Vol 37 (6) ◽  
pp. 265-268
Author(s):  
Wayne Geyer ◽  
Peter Schaefer ◽  
Keith Lynch

Ponderosa pine (Pinus ponderosa Laws.) has been planted widely in the Great Plains of the United States for windbreaks. Recommendations based on a 1968 study were to use material from south central South Dakota and north central Nebraska. A second test to further delineate seed sources (provenances) in this region was established in 1986. This paper reports results for survival, height, diameter, and D2H measurements in both Kansas and South Dakota, after 15 years. Results identify a wide range of suitable geographic provenances within the two-state region. A majority of the tested sources performed well in both states, thus verifying the original recommendations.


2020 ◽  
Author(s):  
Paul Baldauf ◽  
◽  
Gregory Baker ◽  
Patrick Burkhart ◽  
Allen Gontz ◽  
...  

1988 ◽  
Vol 5 (3) ◽  
pp. 180-184 ◽  
Author(s):  
Richard F. Kopp ◽  
Wayne A. Geyer ◽  
William R. Lovett

Abstract Silver maple shows promise for use in short-rotation intensive culture energy plantings. A seed source study composed of trees from 26 midwest locations was established in south-central Nebraska in 1979 to determine where silver maple seed should be collected for use in the central Great Plains. Trees were evaluated for survival, height growth, and number of dominant stems per tree during their seventh growing season. Sources from eastern Nebraska, western Iowa, eastern Kansas, and northwest Missouri generally exhibited the greatest survival, height growth, and number of dominant stems. Height growth appears to be under stronger genetic control than stem number, suggesting that selection for height should take priority when selecting trees for biomass production. Geographic trends related to survival and height growth, but not stem number, were observed. Environmental or geographic factors that are strong predictors of seed source performance could not be identified. Planting the most locally produced seed is advisable for the central Plains. North. J. Appl. For. 5:180-184, Sept. 1988.


Plant Disease ◽  
2014 ◽  
Vol 98 (8) ◽  
pp. 1060-1065 ◽  
Author(s):  
Z. Miller ◽  
F. Menalled ◽  
D. Ito ◽  
M. Moffet ◽  
M. Burrows

Plant genotype, age, size, and environmental factors can modify susceptibility and tolerance to disease. Understanding the individual and combined impacts of these factors is needed to define improved disease management strategies. In the case of Wheat streak mosaic virus (WSMV) in winter wheat, yield losses and plant susceptibility have been found to be greatest when the crop is exposed to the virus in the fall in the central and southern Great Plains. However, the seasonal dynamics of disease risk may be different in the northern Great Plains, a region characterized by a relatively cooler fall conditions, because temperature is known to modify plant–virus interactions. In a 2-year field study conducted in south-central Montana, we compared the impact of fall and spring WSMV inoculations on the susceptibility, tolerance, yield, and grain quality of 10 winter wheat varieties. Contrary to previous studies, resistance and yields were lower in the spring than in the fall inoculation. In all, 5 to 7% of fall-inoculated wheat plants were infected with WSMV and yields were often similar to uninoculated controls. Spring inoculation resulted in 45 to 57% infection and yields that were 15 to 32% lower than controls. Although all varieties were similarly susceptible to WSMV, variations in tolerance (i.e., yield losses following exposure to the virus) were observed. These results support observations that disease risk and impacts differ across the Great Plains. Possible mechanisms include variation in climate and in the genetic composition of winter wheat and WSMV across the region.


2010 ◽  
Vol 11 (1) ◽  
pp. 48
Author(s):  
T. Gulya ◽  
A. Mengistu ◽  
K. Kinzer ◽  
N. Balbyshev ◽  
S. Markell

Charcoal rot was first observed on sunflower in North and South Dakota in 1998, and was widespread on soybeans recently in Iowa, suggesting that Macrophomina may becoming more common in cooler growing areas of Midwestern United States. With the multitude of Macrophomina hosts in the northern Great Plains and the high incidence of microsclerotia we detected in soil, high disease potential may exist, suggesting that in drier, hotter years the sunflower crop may be affected by this disease. Accepted for publication 17 May 2010. Published 7 July 2010.


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