Gaseous Nitrogen Losses and Range Fertilization

Dyne, George M. Van; Meyer, James H.

doi:10.2307/3895767

Cited by 12 publications

(4 citation statements)

References 18 publications

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“…This is particularly true with regard to non-enzymatic losses in soils such as the Gray Wooded, of slight or moderate acidity (Wullstein and Gilmour, 1964). In light of the 8: 1 ratio the rates of S used in the present study were higher than would normally be considered necessary for growth and protein formation, and the response of pinegrass to lower levels of S in combination with N remains to be tested.…”

Section: Results Of the Experiments Confirm Earlier Findings (Dawson mentioning

confidence: 91%

Effect of Fertilizer on Pinegrass in Southern British Columbia

Freyman¹,

Ryswyk²

1969

Journal of Range Management

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Allen Press and Society for Range Management are collaborating with JSTOR to digitize, preserve and extend access to Journal of Range Management. FREYMAN AND van RYSWYKan increase in actual forage production, as they are largely non-palatable to livestock.The Rhodes site was the lowest producing of the sites, although increases in production were observed at all rates of nitrogen fertilization. The perennial forb component also increased on this site but only to the 67-pound nitrogen treatment. Annual forbs were present in large numbers during the 1965 season, especially at the high levels of nitrogen application.It became apparent from the data that caution and good judgment must be exercised when fertilizing native rangelands in western North Dakota. Nitrogen fertilizer may be a valuable tool in range improvement when the factors of plant and soil response to the applied nitrogen are known and applied on a range site basis.

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Section: Results Of the Experiments Confirm Earlier Findings (Dawson mentioning

confidence: 91%

Effect of Fertilizer on Pinegrass in Southern British Columbia

Freyman¹,

Ryswyk²

1969

Journal of Range Management

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“…Losses of N may occur through gaseous processes under these circumstances. Wullstein and Gilmour (1964) suggest that gaseous losses of N from surfaceapplied N fertilizers on rangelands may be of economic significance. If such losses took place in this trial and differed because of date of application, those differences were masked by other factors more dominant or similar for all dates.…”

Section: Discussionmentioning

confidence: 99%

Wheatgrass Response to Seasonal Applications of Two Nitrogen Sources

Sneva¹

1973

Journal of Range Management

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Highlight: Fall, winter, and spring applications of 20 lb. Nfacre as urea or as ammonium nitrate were applied in each of 3 years to two introduced grasses, crested and Siberian wheatgrasses, on Oregon's high desert range. Mature herbage yield increased with fertilizers, but there were no significant interactions with application date. Urea increased mean yield 3% more than did ammonium nitrate, but the increase may not be of practical significance. Crude protein concentration of mature yields, evaluated in 1 year only, was not influenced by either fertilizer or application time. Fall-and winter-applied N fertilizer increased available soil nitrate concentration in mid-April, but differences due to date and source of N were nil.

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“…Fertilizer extended the green feed period of the forage up to six weeks and the livestock utilization went up 3, 4 and 5 times respectively with 25, 50 and 100 pounds of nitrogen per acre over check plots. Wullstein and Gilmour (1964) determined that if range fertilization becomes a common practice, range managers may encounter gaseous nitro= gen losses of economic significance. to good range condit.ion •.…”

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confidence: 99%