Responses of Annual Range to Urea Applied at Various Dates

Effect of Site Class and Rainfall on Annual Range Response to Nitrogen and Phosphorus

“…Increasing the nitrogen rate to 120 lb./acre markedly increased the response to phosphorus (Table 4). These results contrast with those obtained by Hoglund et al (1952), and Jones (1960 and1963) which showed the nitrogen-phosphorus interaction on annual range to be generally insignificant. With an application of 150 lb.…”

“…Forage yield response to nitrogen fertilizer application on range soils has been reported by many investigators (Hoglund et al, 1952;McKell et al, 1959;Jones, 1960;Jones and Evans, 1960;Woolfolk et al, 1962;Jones, 1963;and Conrad et al, 1966). Most of this research has been conducted in the coastal mountain areas of the central and northern parts of the state and in the foothills on the west side of the Sierra Nevada Mountains.…”

Time of Application and Source of Nitrogen Fertilizer on Yield, Quality, Nitrogen Recovery, and Net Returns for Dryland Forage Grasses

“…Many other studies have been carried out to compare fall applications to spring applications (Jones 1960;Laughlin 1963;Kresge 1965;Stroehlein et al 1968;Sneva 1973;Power et aI. 1972Power et aI.…”

Yield, Percent Nitrogen, and Total Nitrogen Uptake of Various California Annual Grassland Species Fertilized with Increasing Rates of Nitrogen1

“…Meat yields were increased enough to more than pay for the fertilizer in 7 of the 10 tests, and to break even on fertilizer costs in the other 3 tests. During the 1955-56 season Martin and Berry 4 indicated that fertilized pastures produced enough extra meat at prevailing prices to pay for fertilizer or show a profit in 13 out of 16 tests. Whether N fertilization pays on annual grassland depends upon management, prices, soils, temperatures and the amount and distribution of rainfall.…”