scholarly journals Impact of Consuming Tall Fescue Leaves with the Endophytic Fungus, Acremonium coenophialum, on Meadow Voles

1998 ◽  
Vol 79 (2) ◽  
pp. 457-463 ◽  
Author(s):  
M. R. Conover
jpa ◽  
1991 ◽  
Vol 4 (2) ◽  
pp. 208-212 ◽  
Author(s):  
A. B. Chestnut ◽  
H. A. Fribourg ◽  
J. B. McLaren ◽  
D. G. Keltner ◽  
B. B. Reddick ◽  
...  

1989 ◽  
Vol 3 (3) ◽  
pp. 485-489 ◽  
Author(s):  
Albert E. Smith

The importance of tall fescue as a pasture grass is diminished when infected with the fescue endophyte. The availability of fungus-free seed has necessitated the development of systems to kill the infected sod before interseeding fungus-free seed. Field studies were conducted to evaluate the response of fescue sod to foliar-applied herbicides as single and sequential applications during the fall and spring. Sequential applications of paraquat at 0.14, 0.28, and 0.56 kg ai/ha in September and October and glyphosate at 0.84 and 1.7 kg/ha applied as single or sequential applications in September and October resulted in more than 90% kill of the tall fescue sod. Spring treatments of paraquat and glyphosate were less effective than those applied in the fall. Dalapon, fluazifop-P, HOE-39866 [glufosinate (proposed name)], sethoxydim, and simazine did not effectively kill the sod.


1994 ◽  
Vol 29 (3) ◽  
pp. 398-406 ◽  
Author(s):  
Berry A. Crutchfield ◽  
Daniel A. Potter

Feeding preferences of Japanese beetle, Popillia japonica Newman, and southern masked chafer, Cyclocephala lurida Bland, grubs for six common cool-season turfgrasses were evaluated in choice tests in the greenhouse. On the basis of larval distributions, Popillia japonica consistently preferred perennial ryegrass, Lolium perenne L., over all other turfgrasses tested. In contrast, C. lurida showed no consistent pattern of preference. Presence of one grub species did not affect distribution of the other species. Grubs did not discriminate between tall fescue, Festuca arundinacea Schreb., infected with the endophyte Acremonium coenophialum Morgan-Jones & Gams and endophyte-free tall fescue.


1996 ◽  
Vol 8 (2) ◽  
pp. 233-237 ◽  
Author(s):  
L. L. Mills Wallace ◽  
D. W. Vogt ◽  
R. J. Lipsey ◽  
G. B. Gamer ◽  
C. N. Cornell

Effects of high environmental temperature and dietary intake of tall fescue ( Festuca arundinacea) seed containing the endophyte Acremonium coenophialum on bovine acid-base status were studied using 3 groups of bull calves (2 Simmental, 1 Angus). Experimental animals were housed in controlled-climate chambers and subjected to gradual increases in environmental temperature, first while being fed an endophyte-free diet and then while being fed a diet containing 17% endophyte-infested fescue seed. Marked acid-base disturbances were not observed in any animals. In general, Pco2, HCO3-, base excess, and arterial blood pH values were reduced in response to heat stress, both with endophyte-free and endophyte-containing diets. In most individuals anion gap increased. These results reflected metabolic compensation for mild chronic alveolar hyperventilation and retention of organic acids. These findings suggest that, under conditions similar to those found during the summer in central Missouri, normal cattle should not be at great risk of developing respiratory alkalosis or other severe acid-base disturbances as a result of heat stress and/or intake of tall fescue endophyte.


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