Aluminium and the phosphorus requirements ofPinus radiata

1964 ◽  
Vol 20 (1) ◽  
pp. 131-134 ◽  
Author(s):  
Fr. Humphreys ◽  
R. Truman
Keyword(s):  
Phosphorus Requirements

Phosphorus Requirements of Growing Rabbits

1961 ◽  
Vol 20 (3) ◽  
pp. 510-513 ◽  
Author(s):  
L. G. Mathieu ◽  
S. E. Smith
Keyword(s):  
Phosphorus Requirements

Phosphorus equivalence ofaspergillus nigerphytase for growing pigs

1995 ◽  
Vol 1995 ◽  
pp. 40-40
Author(s):  
Naheeda Khan ◽  
D.J.A. Cole
Keyword(s):  
Total Phosphorus ◽  
Current Literature ◽  
Livestock Production ◽  
Growing Pigs ◽  
Environmental Constraints ◽  
Experimental Conditions ◽  
Production Sector ◽  
Soil Phosphate ◽  
Phosphorus Requirements ◽  
Inorganic Phosphates

Inconsistencies in the estimated phosphorus requirements of growing pigs have come to light in recent years due to environmental constraints being imposed on the livestock production sector. Values of a net requirement estimated by the ARC (1981) extend from 4.6 g/day for 25kg liveweight to 5.2 g/day for 45kg pigs, but current literature suggesting that the actual requirement may be lower (eg Jongbloed and Everts, 1991) calls for a revision of previous recommendations.Around two thirds of the total phosphorus in cereals exists in the form of insoluble phytates which must be degraded before the phosphorus can be absorbed in the intestine. Under experimental conditions, the use of phytase in pig diets has demonstrated consistent improvements in phosphorus digestibility. The enzyme hydrolyses phytate by stepwise removal of orthophosphates, which become available for absorption in the gut. Although quantification of phytase/phosphorus substitution is as yet undetermined, digestibility results so far indicate that if used correctly the enzyme could largely replace inorganic phosphates, particularly in regions where soil phosphate levels are of concern.

Changes in the Calcium and Phosphorus Requirements of the Dairy Cow at Parturition with Particular Reference to the Amounts Supplied to the Foetus in Utero

1966 ◽  
Vol 122 (5) ◽  
pp. 196-200 ◽  
Author(s):  
H.W. Symonds ◽  
R. Manston ◽  
J.M. Payne ◽  
B.F. Sansom
Keyword(s):  
Dairy Cow ◽  
In Utero ◽  
Calcium And Phosphorus ◽  
Phosphorus Requirements

Phosphorus requirements of growing-finishing pigs reared in a commercial environment1,2

2004 ◽  
Vol 82 (10) ◽  
pp. 2945-2952 ◽  
Author(s):  
C. W. Hastad ◽  
S. S. Dritz ◽  
M. D. Tokach ◽  
R. D. Goodband ◽  
J. L. Nelssen ◽  
...  
Keyword(s):  
Finishing Pigs ◽  
Phosphorus Requirements

Nitrogen and phosphorus requirements of cotton and wheat under changing atmospheric CO2 concentrations

1993 ◽  
Vol 155-156 (1) ◽  
pp. 231-234 ◽  
Author(s):  
G. S. Rogers ◽  
L. Payne ◽  
P. Milham ◽  
J. Conroy
Keyword(s):  
Atmospheric Co2 ◽  
Nitrogen And Phosphorus ◽  
Co2 Concentrations ◽  
Atmospheric Co2 Concentrations ◽  
Phosphorus Requirements

Phosphorus Requirements of Rice Grown in Soils With Different Sodicity

2006 ◽  
Vol 29 (12) ◽  
pp. 2105-2117 ◽  
Author(s):  
Ali Qadar ◽  
Z. M. A. Ansari
Keyword(s):  
Phosphorus Requirements

COMPARING FERTILIZER PHOSPHORUS REQUIREMENTS OF CANOLA, LUPIN, AND WHEAT

2001 ◽  
Vol 24 (12) ◽  
pp. 1885-1900 ◽  
Author(s):  
R. F. Brennan ◽  
M. D. A. Bolland
Keyword(s):  
Phosphorus Requirements

Protein turnover and plant RNA and phosphorus requirements in relation to nitrogen fixation

Plant Science ◽  
2012 ◽  
Vol 188-189 ◽  
pp. 25-35 ◽  
Author(s):  
John A. Raven
Keyword(s):  
Nitrogen Fixation ◽  
Protein Turnover ◽  
Phosphorus Requirements
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