|
Registro Completo |
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
01/08/1992 |
|
Data da última atualização: |
11/05/2023 |
|
Autoria: |
BLACK, A. L. |
|
Título: |
Nitrogen and phosphorus fertilization for production of crested wheatgrass and native grass in Northeastern Montana. |
|
Ano de publicação: |
1968 |
|
Fonte/Imprenta: |
Agronomy Journal, v. 60, n. 2, p. 213-216, 1968. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract; Nitrogen and N-P fertilization consistently increased forage yields of native grass and crested wheatgrass (Agropyron desertorum [Fisch.] Schult., ?Standard?). Plant responses were greatest the year of fertilization, but residual effects were significant 1 to 2 years later. Aplications of N at rates of 45 kg/ha or greater, regardless of P treatment, increased water-use efficiencies of both grasses 1.5- to 2.5-fold for 2 to 3 years. Increased wateruse efficiency was at least partly due to more efficient extraction of subsoil water. Plant P content was increased substantially by applied P the year of application and 3 years later, regardless of N treatment. Plant recovery of N applied alone at rates of 45 or 90 kg/ha for the 4-year period averaged 65.8% for crested wheatgrass and 60.0% for native grass. Recovery of N applied in combination with P averaged 73.1% for crested wheatgrass but only 38.2% for native grass. Phosphorus fertilizer stimulated uptake of soil N by both grasses about 20%. Nitrogen increased the 4-year production of crude protein 1.5- to 2.6-fold for both grasses. High N fertilizer rates were more economical than low N rates, regardless of P treatment. |
|
Palavras-Chave: |
Adubacao quimica; Water-use efficiency. |
|
Thesagro: |
Pastagem. |
|
Thesaurus Nal: |
Agropyron desertorum; Forage production; Nitrogen fertilizers; Phosphorus fertilizers; Plant nutrition; Rangelands. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 01908naa a2200229 a 4500
001 1520861
005 2023-05-11
008 1968 bl uuuu u00u1 u #d
100 1 $aBLACK, A. L.
245 $aNitrogen and phosphorus fertilization for production of crested wheatgrass and native grass in Northeastern Montana.$h[electronic resource]
260 $c1968
520 $aAbstract; Nitrogen and N-P fertilization consistently increased forage yields of native grass and crested wheatgrass (Agropyron desertorum [Fisch.] Schult., ?Standard?). Plant responses were greatest the year of fertilization, but residual effects were significant 1 to 2 years later. Aplications of N at rates of 45 kg/ha or greater, regardless of P treatment, increased water-use efficiencies of both grasses 1.5- to 2.5-fold for 2 to 3 years. Increased wateruse efficiency was at least partly due to more efficient extraction of subsoil water. Plant P content was increased substantially by applied P the year of application and 3 years later, regardless of N treatment. Plant recovery of N applied alone at rates of 45 or 90 kg/ha for the 4-year period averaged 65.8% for crested wheatgrass and 60.0% for native grass. Recovery of N applied in combination with P averaged 73.1% for crested wheatgrass but only 38.2% for native grass. Phosphorus fertilizer stimulated uptake of soil N by both grasses about 20%. Nitrogen increased the 4-year production of crude protein 1.5- to 2.6-fold for both grasses. High N fertilizer rates were more economical than low N rates, regardless of P treatment.
650 $aAgropyron desertorum
650 $aForage production
650 $aNitrogen fertilizers
650 $aPhosphorus fertilizers
650 $aPlant nutrition
650 $aRangelands
650 $aPastagem
653 $aAdubacao quimica
653 $aWater-use efficiency
773 $tAgronomy Journal$gv. 60, n. 2, p. 213-216, 1968.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
