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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
01/08/1992 |
Data da última atualização: |
10/05/2023 |
Autoria: |
BLACK, A. L.; WIGHT, I. R. |
Título: |
Nitrogen and phosphorus availability in a fertilized rangeland ecosystem of the northern great plains. |
Ano de publicação: |
1972 |
Fonte/Imprenta: |
Journal of Range Management, v. 25, n. 6, p. 456-460, Nov. 1972. |
Idioma: |
Inglês |
Conteúdo: |
Factorial combinations of ammonium nitrate at rates of 0, 100, 300, and 900 lb. N/acre and concentrated super-phosphate at rates of 0, 100, and 200 lb. P/acre were broadcast on a native range site (a Bouteloua-Carex-[Sti~al faciation of a mixed prairie association) near Sidney, Montana. In 2 years, the addition of a high rate of N and P fertilizer increased total forage production 3.3fold, total crude protein 6.7-fold, and plant N and P percentages about 2.0- fold. High rates of N applied alone had no marked effect on plant P percentage the year of application, but plant P percentage was reduced nearly 2.0-fold the second year by all rates of N. Nitrate-nitrogen was concentrated in the upper 3 feet of soil in 1969 and in the upper 5 feet of soil in 1970. Nearly all of the P fertilizer applied was concentrated in the upper 3 inches of soil in 1969 and in the upper 6 inches of soil in 1970. The high rate of N applied alone decreased soil pH from about 6.9 to 6.1 in the 0- to 6-inch soil depth in 1969 and from 6.9 to 6.5 in 1970 even though the soil was strongly calcareous. |
Palavras-Chave: |
Adubacao mineral; adubacao quimica. |
Thesagro: |
Nitrogênio; Pastagem. |
Thesaurus Nal: |
Ammonium nitrate; Forage production; Nitrogen fertilizers; Plant nutrition; Rangelands; Superphosphate. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 01841naa a2200253 a 4500 001 1520906 005 2023-05-10 008 1972 bl uuuu u00u1 u #d 100 1 $aBLACK, A. L. 245 $aNitrogen and phosphorus availability in a fertilized rangeland ecosystem of the northern great plains.$h[electronic resource] 260 $c1972 520 $aFactorial combinations of ammonium nitrate at rates of 0, 100, 300, and 900 lb. N/acre and concentrated super-phosphate at rates of 0, 100, and 200 lb. P/acre were broadcast on a native range site (a Bouteloua-Carex-[Sti~al faciation of a mixed prairie association) near Sidney, Montana. In 2 years, the addition of a high rate of N and P fertilizer increased total forage production 3.3fold, total crude protein 6.7-fold, and plant N and P percentages about 2.0- fold. High rates of N applied alone had no marked effect on plant P percentage the year of application, but plant P percentage was reduced nearly 2.0-fold the second year by all rates of N. Nitrate-nitrogen was concentrated in the upper 3 feet of soil in 1969 and in the upper 5 feet of soil in 1970. Nearly all of the P fertilizer applied was concentrated in the upper 3 inches of soil in 1969 and in the upper 6 inches of soil in 1970. The high rate of N applied alone decreased soil pH from about 6.9 to 6.1 in the 0- to 6-inch soil depth in 1969 and from 6.9 to 6.5 in 1970 even though the soil was strongly calcareous. 650 $aAmmonium nitrate 650 $aForage production 650 $aNitrogen fertilizers 650 $aPlant nutrition 650 $aRangelands 650 $aSuperphosphate 650 $aNitrogênio 650 $aPastagem 653 $aAdubacao mineral 653 $aadubacao quimica 700 1 $aWIGHT, I. R. 773 $tJournal of Range Management$gv. 25, n. 6, p. 456-460, Nov. 1972.
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