given the important role of crop growth indices for explanation of cultivars yield differences in diverse environmental and agronomical circumstances, this experiment was conducted at research field of tarbiat modares university during 2007 growing season. experimental treatments were arranged in split-plot layout based on randomized complete blocks with four replications. in this research, sow...

Effects of corn silage crop processing and chop length on intake, digestion, and milk production were evaluated. Corn silage treatments were harvested at one-half milkline stage of maturity (65% whole-plant moisture content) and at 0.95-cm theoretical length of cut without processing (control) or 0.95-, 1.45-, or 1.90-cm theoretical length of cut with processing at a 1-mm roll clearance. Twenty...

than 90% were interested in using farm management decision support software (Frasier et al., 1997). The GPFARM is an ARS decision support system for strategic (longsame survey also showed that 57% of 219 producer term) planning. This study evaluated its performance for comparing alternative dryland no-till cropping systems and established limits of respondents were interested in a farm manageme...

Two experiments using six rumen-fistulated Holstein steers in 3 X 3 Latin square designs were conducted to test the effects of urea addition to corn silage, and grain addition to haylage, on feed intake, digestibility of nutrients and rumen fermentation of complete diets fed once daily. Addition of .34 and .68% urea to corn silage increased dietary crude protein from 8.1 to 11.3 and 13.3%, and ...

for this reason the samples were obtained from three area in kerman province that cartivate corn in large amounts (giroft, kahnooj, baft).the amounts of samples were enough for both voluntary consumption and investigation of digestibility. after that samples had been chopped by electric chopper we sampled again from every sample and its chemical compositions were determined with standard method...

1Carrington Research Extension Center, NDSU 2Hettinger Research Extension Center, NDSU The objective of this project was to evaluate corn processed by fi ne grinding or rolling or fed whole in relation to dietary forage level for fi nishing yearling steers. Results indicate when forage levels are greater than 15.5 percent on a dry-matter basis, dry rolling or fi nely grinding corn to maintain a...

The Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Crambidae), is the key pest of sugarcane (Saccharum spp.) in Texas; it can attack several grassy crop and noncrop host plants and has spread into Louisiana. Through small-plot, commercial field, and pheromone trap experiments, this study demonstrates that the pest uses corn, Zea mays L., more than sugarcane and sorghum, Sorghum bicolo...

Tannins, a group of chemical compounds produced by a number of broadleaf forage plants, can bind proteins. Typically, grasses don’t contain tannins, although sorghum (Sorghum bicolor) has a significant tannin content. Tannins are often found in higher concentrations in broadleaf plants adapted to warm climates. For example, sericea lespedeza (Lespedeza cuneata) is a forage cultivated in the mid...