scholarly journals Reevaluation of Nonphytate Phosphorus Requirement of Growing Pullets with and Without Phytase

2000 ◽  
Vol 79 (8) ◽  
pp. 1143-1153 ◽  
Author(s):  
K. Keshavarz
2011 ◽  
Vol 10 (2) ◽  
pp. 304-311
Author(s):  
Zong-yong JIANG ◽  
Gui-lian ZHOU ◽  
Ying-cai LIN ◽  
Shou-qun JIANG ◽  
De-zhong LI ◽  
...  

1962 ◽  
Vol 21 (1) ◽  
pp. 3-8 ◽  
Author(s):  
G. E. Combs ◽  
J. M. Vandepopuliere ◽  
H. D. Wallace ◽  
M. Koger

1971 ◽  
Vol 22 (1) ◽  
pp. 81 ◽  
Author(s):  
PG Ozanne ◽  
KMW Howes

The applied phosphorus requirement of a pasture sown to subterranean clover was measured with and without grazing. Under moderate grazing pressure, in the year of establishment, the pasture required about 50 % more phosphorus than when ungrazed. In the following season, at a higher stocking rate, the grazed areas needed twice as much phosphorus as the ungrazed to make 90% of their maximum growth. In both years this difference in requirement between stocked and unstocked treatments was present throughout the growing season. Increased phosphorus requirement under grazing is associated with the need for greater uptake of phosphorus under conditions where redistribution of absorbed phosphorus within the plant is prevented by defoliation. It does not appear to be due to effects of defoliation on root size. Nor does it depend on differential light interception or on changes in botanical composition.


2015 ◽  
Vol 180 ◽  
pp. 216-220 ◽  
Author(s):  
Liangquan Wu ◽  
Zhenling Cui ◽  
Xinping Chen ◽  
Shanchao Yue ◽  
Yixiang Sun ◽  
...  

2010 ◽  
Vol 41 (3) ◽  
pp. 401-410 ◽  
Author(s):  
L C Nwanna ◽  
H Kühlwein ◽  
F J Schwarz

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