|
Registro Completo |
|
Biblioteca(s): |
Embrapa Pantanal. |
|
Data corrente: |
25/04/1996 |
|
Data da última atualização: |
26/03/2009 |
|
Autoria: |
JONES, R. K. |
|
Título: |
Studies on some deep sandy soils in Cape York Peninsula, North Queensland. 2. Plant nutrient status. |
|
Ano de publicação: |
1973 |
|
Fonte/Imprenta: |
Australian Journal of Experimental Agriculture and Animal Husbandry, v.13, p.89-97, Feb. 1973. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The nutrient status of the deep siliceous sands which cover an extensive area in Cape York Peninsula has been studied in glasshouse and field experiments. Using Townsville stylo (Stylosanthes humilis) as a test legume, the soils were found to be extremely deficient in P and s, and moderately so in Zn, Cu, and K. Responses to Mo were found on most of the eight soils tested in the glasshouse but these were not confirmed at the field site in ei- ther of the two growing seasons. There was little response to Ca (lime) in spite of the very low levels of total and exchangeable Ca in these soils. Suggested reasons for this are the known tolerance of tropical legumes to low Ca supply and the fact that exchangeable Ca, although low, represented a fairly high percentage of the total exchange capacity. Levels of total N in these soils were also very low and the native grasses were able to absorb on- ly 15 kg N ha-1 in an entire growing season. Two samples of rock phosphate (from north- western Queensland and Christmas Island) were found to be very poor alternatives to su- perphosphate, at least in the first season. In spite of the extreme infertility of these soils, very high levels of pasture production (> 10,000 kg of Townsville stylo ha-1) could be achieved in well-fertilized pastures. |
|
Palavras-Chave: |
Deep sandy soils; Plant nutrient. |
|
Thesagro: |
Nutriente; Planta; Solo Arenoso. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01858naa a2200181 a 4500
001 1788283
005 2009-03-26
008 1973 bl --- 0-- u #d
100 1 $aJONES, R. K.
245 $aStudies on some deep sandy soils in Cape York Peninsula, North Queensland. 2. Plant nutrient status.
260 $c1973
520 $aThe nutrient status of the deep siliceous sands which cover an extensive area in Cape York Peninsula has been studied in glasshouse and field experiments. Using Townsville stylo (Stylosanthes humilis) as a test legume, the soils were found to be extremely deficient in P and s, and moderately so in Zn, Cu, and K. Responses to Mo were found on most of the eight soils tested in the glasshouse but these were not confirmed at the field site in ei- ther of the two growing seasons. There was little response to Ca (lime) in spite of the very low levels of total and exchangeable Ca in these soils. Suggested reasons for this are the known tolerance of tropical legumes to low Ca supply and the fact that exchangeable Ca, although low, represented a fairly high percentage of the total exchange capacity. Levels of total N in these soils were also very low and the native grasses were able to absorb on- ly 15 kg N ha-1 in an entire growing season. Two samples of rock phosphate (from north- western Queensland and Christmas Island) were found to be very poor alternatives to su- perphosphate, at least in the first season. In spite of the extreme infertility of these soils, very high levels of pasture production (> 10,000 kg of Townsville stylo ha-1) could be achieved in well-fertilized pastures.
650 $aNutriente
650 $aPlanta
650 $aSolo Arenoso
653 $aDeep sandy soils
653 $aPlant nutrient
773 $tAustralian Journal of Experimental Agriculture and Animal Husbandry$gv.13, p.89-97, Feb. 1973.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pantanal (CPAP) |
|
