Forage biomass production and water storage (WS) was evaluated in cactus pear cv. Gigante fertilized with combinations of nitrogen (10, 70, 100, 130, 190 kg ha−1 yr−1 N) phosphorus P2O5) annual (AH) biennial (BH) harvest frequencies, Quixadá Tejuçuoca, Brazil. A randomized complete block design used a split-plot arrangement four replications. In Quixadá, the maximum total forage (TFB) recorded ...

The effect of nitrogen fertilization of maize on fermentability of maize grain in the rumen was studied by means of in vitro method based on the measurement of gas produced during the incubation of samples with rumen liquor. Gas production was recorded continuously up to 72 h incubation time and cumulative gas production was described by the Gompertz equation Y=A*exp(-exp(-d*(t-tm))). Seven tre...

Abstract—Nitrogen fertilizer is the most used and often the most mismanaged nutrient input. Nitrogen management has tremendous implications on crop productivity, quality and environmental stewardship. Sufficient nitrogen is needed to optimum yield and quality. Soil and in-season plant tissue testing for nitrogen status are a time consuming and expensive process. Real time sensing of plant nitro...

in order to evaluate different sources and rates of nitrogen on dry matter yield, concentration and uptake of primary macronutrients (nitrogen, phosphorous and potassium) in forage sorghum (hybrid of speedfeed), three levels of nitrogen (80, 160 and 240 kg n ha-1) from three n sources (urea fertilizer, cattle manure and equal combination of urea fertilizer + cattle manure) and the control (no f...

Two field experiments were conducted to know the effect of different doses of nitrogen fertilizer on the growth, botanical parameters and yield of maize and jumbo fodder cultivated with cowpea as inter crop and evaluation of silage. The experimental plots for Jumbo with cowpea and maize with cowpea were applied to nitrogen (N2) levels as urea 0, 100, 150kg ha-1 and 0, 150, 220 kg/ha, respective...

Corn harvested for silage is an important feed crop on most Pennsylvania farms, where cropland often is limited. The crop provides livestock producers with a high-yielding, relatively consistent source of forage and the animals with a highly digestible and palatable feed. Corn silage produces more energy per acre than any other crop grown in Pennsylvania. Corn silage serves as a high-energy for...

eight forage sorghum cultivars (sweet jumbo, nectar, chopper, pacific bmr, speed feed, kfs1, kfs2 and kfs3) were assessed to determine the most suitable traits carrying cultivar, through a randomized complete block design with four replications during 2003-2005. ammonium phosphate (basd on p2o5) was applied at 115 kg/ha and 183 kg/ha of nitrogen (urea-based) at four application times. six trait...

It is common for stocker operators to buy calves in the spring and sell them as feeder cattle in the fall. Economic favorability of various stocker systems based on animal response is largely untested. A systems grazing study was conducted to compare net returns of 2 different forage management practices with a control. A spring group and a fall group of steers were stocked in each of 3 treatme...