Browsing Journal of Range Management, Volume 24, Number 2 (March 1971) by Issue Date
Now showing items 21-23 of 23
In Vitro Digestibility of Native Grass HayMethod of storage had a greater effect on the in vitro dry matter digestibility (DMD) of native grass hay than either storage time or date of cutting. The nutritive value of native hay was maintained better by storing it in round bales than by storing it in windrows, bunches or letting it remain standing. The first 60 days in storage was the period when native hay had the greatest loss of nutritive value regardless of storage method. There was an interaction of cutting date and year on DMD. The early cut hay in 1962 had a higher DMD (42.7%) than the late cut hay (40.3%). There was no difference in 1963 (40.6 vs. 40.1%).
Grass Mixtures for Seeding Sagebrush LandsFour wheatgrasses were seeded alone and in mixtures in 1945 near Dubois, Idaho. By 1955, fairway wheatgrass had spread by seed to all plots and has remained the most abundant species. Intermediate and pubescent wheatgrasses spread slower, mainly by rhizomes, and by 1967, they were present on all treatments. At the end of 25 years these three species are growing well together. Bluebunch wheatgrass has practically disappeared from the study area.
Mesquite Twig Girdler: A Possible Means of Mesquite ControlThe mesquite twig girdler (Oncideres rhodosticta Bates) was found to inflict considerable damage to mesquite in Texas and may prove to be a valuable biological control agent for this noxious species. Preliminary observations in infested areas indicated that about 90 percent of the mesquite trees had been attacked by the girdler and that about 40 percent of all branches from 0.5 to 2.0 cm in diameter had been girdled.