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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
24/07/1995 |
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Data da última atualização: |
24/07/1995 |
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Autoria: |
GOMIDE, J. A.; NOLLER, C. H.; MOTT, G. O.; CONRAD, J. H.; HILL, D. L. |
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Título: |
Mineral composition of six tropical grasses as influenced by plant age and nitrogen fertilization. |
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Ano de publicação: |
1969 |
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Fonte/Imprenta: |
Agronomy Journal, v.61, n.1, p.120-123, Jan./Feb. 1969. |
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Idioma: |
Inglês |
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Conteúdo: |
This study was conducted in central Brazil on a sandy loam soil which under normal conditions receives no fertilizer. The K, P, Ca, Mg, Cu, Mn, Fe, and Zn contents were determined on six grasses: Melinis minutiflora Beauv., Digitaria decumbens Stent., Pennisetum purpureum Schum., Pennistetum clandestinum Hochst., Cynodon dactylon Pers., and Panicum maximum Jacq. var. 'Gondlyodes Doell'. Significant decreases in K, P, MG, Cu and Fe in the forages (P < .01) occurred with advantage in plant age from 4 to 36 weeks. The average K content for all grasses at 4 weeks of age was 1.42% and at 36 weeks of age 0.30%. Kikuyugrass had the highest K content at 36 weeks of age (0.54%). The average P content for all grasses was 0.26% at 4 weeks and 0.12% at 36 weeks. Pangolagrass appeared to be a poor source of P at all ages studied (average 0.12%). Nitrogen fertilizer had no effect on any of the minerals studied except for Mn which increased with N fertilization. Under the conditions of the experiment, the forages could be deficient in K and P for cattle and borderline in zinc. |
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Palavras-Chave: |
Composicao mineral; Fertilizacao; Mineral composition; Nitrogen fertilization; Pastagem tropical; Tropical grasses. |
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Thesagro: |
Nitrogênio. |
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Thesaurus Nal: |
plant age. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01833naa a2200265 a 4500
001 1784908
005 1995-07-24
008 1969 bl --- 0-- u #d
100 1 $aGOMIDE, J. A.
245 $aMineral composition of six tropical grasses as influenced by plant age and nitrogen fertilization.
260 $c1969
520 $aThis study was conducted in central Brazil on a sandy loam soil which under normal conditions receives no fertilizer. The K, P, Ca, Mg, Cu, Mn, Fe, and Zn contents were determined on six grasses: Melinis minutiflora Beauv., Digitaria decumbens Stent., Pennisetum purpureum Schum., Pennistetum clandestinum Hochst., Cynodon dactylon Pers., and Panicum maximum Jacq. var. 'Gondlyodes Doell'. Significant decreases in K, P, MG, Cu and Fe in the forages (P < .01) occurred with advantage in plant age from 4 to 36 weeks. The average K content for all grasses at 4 weeks of age was 1.42% and at 36 weeks of age 0.30%. Kikuyugrass had the highest K content at 36 weeks of age (0.54%). The average P content for all grasses was 0.26% at 4 weeks and 0.12% at 36 weeks. Pangolagrass appeared to be a poor source of P at all ages studied (average 0.12%). Nitrogen fertilizer had no effect on any of the minerals studied except for Mn which increased with N fertilization. Under the conditions of the experiment, the forages could be deficient in K and P for cattle and borderline in zinc.
650 $aplant age
650 $aNitrogênio
653 $aComposicao mineral
653 $aFertilizacao
653 $aMineral composition
653 $aNitrogen fertilization
653 $aPastagem tropical
653 $aTropical grasses
700 1 $aNOLLER, C. H.
700 1 $aMOTT, G. O.
700 1 $aCONRAD, J. H.
700 1 $aHILL, D. L.
773 $tAgronomy Journal$gv.61, n.1, p.120-123, Jan./Feb. 1969.
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Registro original: |
Embrapa Pantanal (CPAP) |
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