The efficiency of livestock production in shortgrass steppe may be increased by grazing fourwing saltbush (Atriplex canescens [Pursh] Nutt)-dominated rangeland in late fall and/or early spring, but there is a paucity of information concerning stocking rates and animal gains. The objective of this study was to compare the effects of light and moderate stocking rates on weight gains of heifers gr...

Hatchlings of the painted turtle (Chrysemys picta marginata) are unique as the only reptile and highest vertebrate life form known to tolerate the natural freezing of extracellular body fluids during winter hibernation. Turtles survived frequent exposures to temperatures as low as -6 degrees C to -8 degrees C in their shallow terrestrial nests over the 1987-1988 winter. Hatchlings collected in ...

To determine the effect of forage moisture content on intake and digestion kinetics in sheep, a metabolism trial was conducted using 16 mature wethers (44 kg BW) in a completely randomized design. Forage was harvested at two maturities in early spring from a naturalized pasture composed of temperate grass and legume species. Herbage was harvested at either 8 (early) or 16 cm (late) in height an...

This research discusses the progress of democracy in Egypt after Arab Spring. When Spring expanded Middle East to Egypt, it was considered beginning a transition towards country managed by concept democracy. The Spring, which has been turmoil since early 2011, become rise mass movement demand changes socio-political order. initially expected create that guaranteed equality and social justice. H...

A detailed study of the distribution of egg masses of Homalodisca vitripennis (Germar) and H. liturata Ball was done across a 2-yr period (2001-2003) on six host plants in southern California (Marsh grapefruit, Lisbon lemon, Washington navel, Dancy tangerine, rough lemon, and jojoba in Riverside; jojoba in Desert Center). The majority of egg masses in Riverside belonged to H. vitripennis (84-10...


 Snow cover significantly affects the formation of climate in winter. The snow over has low thermal conductivity, which protects soil from freezing. In spring, moistens and plays an important role surface water regime economic activity country. It should be noted that lack or insufficient height can cause freezing winter crops their death, leads to a decrease even loss yield. Accordingly,...

in study was conducted in two separate experiments in 2011-2013 in seeds and plant improvement institute. in the first experiment, status growth scion and resistance to spring late frost and content proline in 10 genotypes and cultivar almond, grafted on gf677 rootstock included touno, non pariel, shokofeh, sahand, mamayi, shahrood 12, a200, 1-25, 1-16 and 13-40 with 10 replication as a complet...

Nonpoint-source pollution from agricultural activities is currently the leading cause of degradation of waterways in the United States. Applying best management practices to flood-irrigated mountain meadows may improve agricultural runoff and return flow water quality. Prior research has focused on fertilizer use for increased hay yields, while few studies have investigated the environmental im...

The effects of season and community composition as generated by livestock herbivory of differing intensity on seed species preference by Pogonomyrmex barbatus (F. Smith) were studied in a semiarid savanna on the Edward's Plateau, TX. Seasonal differences in nutrient requirements of the colony could lead to differential preferences for seeds harvested in spring and fall. Field cafeteria studies ...