Zobrazeno 1 - 10
of 72
pro vyhledávání: '"I. C. R. Holford"'
Autor:
G. J. Crocker, I. C. R. Holford
Publikováno v:
Fertilizer Research. 28:305-314
Three different parameters of the long term effects of phosphate fertilizers on perennial clover-based pastures were measured over 3–4 years in 27 experiments on acidic soils in an elevated region of eastern Australia. Recovery of fertilizer P was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58151ff8f16cc4bf6a4adb155c6018d0
https://doi.org/10.1007/bf01054331
https://doi.org/10.1007/bf01054331
Autor:
I. C. R. Holford
Publikováno v:
Crop and Pasture Science. 66:107
Testing soils for plant nutrient contents has long been a controversial topic in the research literature. Because of its widespread deficiency and finite natural resource, phosphorus (P) is possibly the most researched plant nutrient, but the most ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61c1c48111fa677399e4cc160248f2d2
https://doi.org/10.1071/cp14056
https://doi.org/10.1071/cp14056
Publikováno v:
Soil Research. 36:57
The effects of subterranean clover, medic, and lucerne, grown simultaneously from 1988 to 1990, followed by wheat from 1991 to 1993, and of chickpea and long fallow in alternate years with wheat, on soil total nitrogen (N), nitrate-N (NO-3-N), organi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f48c1083eff0f77eaf9a9f8dee0fa82
https://doi.org/10.1071/s97036
https://doi.org/10.1071/s97036
Autor:
I. C. R. Holford
Publikováno v:
Soil Research. 35:227
Phosphorus (P) is the most important nutrient element (after nitrogen) limiting agricultural production in most regions of the world. It is extremely chemically reactive, and more than 170 phosphate minerals have been identified. In all its natural f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12f7bb18c14fc18d0e238426dc86eee7
https://doi.org/10.1071/s96047
https://doi.org/10.1071/s96047
Autor:
I. C. R. Holford, G. J. Crocker
Publikováno v:
Australian Journal of Agricultural Research. 48:305
Six treatments were compared for their effects on wheat yields, nitrogen (N) uptake, protein content, and fertiliser N requirements in a long-term rotation study on a black earth and a red clay in northern New South Wales. Three of the treatments wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b75ffd0bea630215080d5e4e06767a27
https://doi.org/10.1071/a96072
https://doi.org/10.1071/a96072
Publikováno v:
Australian Journal of Agricultural Research. 48:1187
Sorghum fertiliser experiments at 40 sites on the north-western slopes andplains of New South Wales demonstrated that many soils are severely deficientin nitrogen (N), but most yield responses to fertiliser N occurred on sites inthe southern part of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49f88ea26a4c570c29dd8eb316ac376a
https://doi.org/10.1071/a97003
https://doi.org/10.1071/a97003
Publikováno v:
Soil Research. 35:365
Two groups of soils were examined to determine the effects of dairy, pig, or sewage effluent and other materials containing phosphorus (P) on their P sorption characteristics, using the Langmuir equation to estimate values of both sorption capacity a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b2d3fcf26326383e9aadfd57fdd07c8
https://doi.org/10.1071/s96048
https://doi.org/10.1071/s96048
Autor:
G. J. Crocker, I. C. R. Holford
Publikováno v:
Australian Journal of Agricultural Research. 45:1051
Eight experiments on acidic soils of the Northern Tablelands of New South Wales were carried out to measure lime effects on clover-based pastures and their response to fertilizer phosphate (P). Each experiment lasted 3 years. The seven soils deficien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::204e3decd581d556915f1f0886fd339f
https://doi.org/10.1071/ar9941051
https://doi.org/10.1071/ar9941051
Publikováno v:
Soil Research. 32:795
Measurements of phosphorus (P) sorption, isotopically exchangeable, KCl soluble and extractable P (Bray(1)) were carried out on limed and unlimed soils from eight pasture experiments on the Northern Tablelands of New South Wales at intervals of 1, 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4e2b8bce7bc132e871685fc232d61b7
https://doi.org/10.1071/sr9940795
https://doi.org/10.1071/sr9940795
Autor:
A. D. Doyle, I. C. R. Holford
Publikováno v:
Australian Journal of Agricultural Research. 44:1745
Phosphorus (P) uptake by wheat from both soil and fertilizer, the recovery of fertilizer P and its agronomic efficiency, and the fertilizer P required for maximum profit were measured in 55 wheat fertilizer experiments during 1986-89 in the northern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e13dd7f799d1c11b19cdbd33d3e38614
https://doi.org/10.1071/ar9931745
https://doi.org/10.1071/ar9931745