Direct and Indirect Effects of Soil Properties on Phosphorus Retention Capacity

Ige, D V; Akinremi, O. O.; Flaten, Don

doi:10.2136/sssaj2005.0324

Cited by 71 publications

(50 citation statements)

References 25 publications

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“…3d). The inclusion of ammonium oxalate Al (Al Ox ) into the regression equations as suggested by Ige et al (2007) improved both the slope and the coefficient of determination for P 150 and S max , thus improving the overall prediction of the retention capacity of these soils (Fig. 2e and 3e).…”

Section: Independent Assessment Of P Retention Capacity Equations Formentioning

confidence: 99%

“…Ige et al (2003) predicted PRC of Nigerian tropical soils from ammonium oxalate extractable Al, soil pH and the percent clay content. For Manitoba soils, Ige et al (2007) suggested Mehlich-3 extractable Ca and Mg and ammonium oxalate extractable Al as the best variables for PRC estimation. Brock et al (2007), working with manure-amended soils, predicted PRC from Mehlich-3 extractable Al, Fe and Ca.…”

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confidence: 99%

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Evaluation of phosphorus retention equations for Manitoba soils

Ige¹,

Akinremi²,

Flaten³

2008

Can. J. Soil. Sci.

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Ige, D. V., Akinremi, O. O. and Flaten, D. N. 2008. Evaluation of phosphorus retention equations for Manitoba soils. Can. J. Soil Sci. 88: 327Á335. One of the key factors in phosphorus management is the P retention capacity (PRC) of the soil. In our previous study, we formulated several equations for estimating the phosphorus retention capacity of Manitoba soils. The objectives of the current study were to evaluate these equations using independent soil samples and to evaluate the influence of manure application on the predictive ability of these equations. Forty representative surface soil samples (20 soils with history of manure application and 20 without manure application history) were collected from across Manitoba. The P retention index (P 150 ) and Langmuir adsorption maximum (S max ) were determined in the laboratory. The measured P retention capacities were then compared with those estimated using the formulated equations. Surprisingly, P 150 , which was obtained from a single measurement, was more robust than S max that was obtained from at least 17 measurements as the equations provided a better estimate of P 150 than S max . Equations that were based on soil particle sizes (either percent clay or percent sand) provided poor estimates of soil PRC for the whole soil collection. However, when the soils were grouped on a pH basis, soil particle size worked better for soils with pH B7 than for soils with pH]7. The equations also worked better for soils with pH similar to those of the soils that were used to formulate the P retention equations. The accuracy of the predicted P sorption capacity improved with the manured soils due to the direct influence of manure application on soil properties that influence P retention such as Ca and Mg. Overall, the combination of Ca M3 , Mg M3 and Al Ox provided the best estimate of the PRC of Manitoba soils. Les e´quations reposant sur la granulome´trie du sol (pourcentage d'argile ou de sable) ne donnent qu'une pie`tre estimation de la CRP, pour l'ensemble des e´chantillons. Quand les sols sont groupe´s en fonction de leur pH cependant, la granulome´trie donne de meilleurs re´sultats avec ceux de pH infe´rieur a`7 plutoˆt que ceux de ce pH ou d'un pH supe´rieur. Les e´quations donnent aussi de meilleurs re´sultats avec les sols de pH similaire a`celui des sols dont on s'e´tait servi pour formuler les e´quations. La pre´cision des pre´visions sur la capacite´d'adsorption du P s'ame´liore avec les sols engraisse´s de fumier, en raison de l'incidence directe de cet amendement sur les proprie´te´s du sol qui influent la re´tention du P, notamment la concentration de Ca et de Mg. Dans l'ensemble, la meilleure estimation de la CRP des sols manitobains est obtenue quand on combine Ca M3 , Mg M3 et Al Ox .

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Section: Independent Assessment Of P Retention Capacity Equations Formentioning

confidence: 99%

mentioning

confidence: 99%

Evaluation of phosphorus retention equations for Manitoba soils

Ige¹,

Akinremi²,

Flaten³

2008

Can. J. Soil. Sci.

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“…There are significant correlations between soil pH and exchangeable Ca (r=0.734), soil pH and exchangeable Mg (r=0.676) and Soil pH and clay percentage (r=0.623). Significant positive correlations with soil exchangeable Ca, exchangeable Mg and soil clay content with soil pH have been found by Ige et al [2]. Soil available phosphorus showed a significant negative relationship with soil clay percentage (r=-0.329) at 0.01 probability level.…”

Section: Citationmentioning

confidence: 58%

An Approach for Site Specific Nutrient Management in Paddy Growing Soils

Wau

2015

APAR

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“…2 (a) and 2 (b) and be described in the equation of y= -7.4987x+716.65 (after one month) and y= -1.0021x+103.24 (after four months). The negative notation in the equation showed the inverse correlation between the P-retention and available P. In this case, the decreasing of Pretention is followed by the increasing of available P. Besides the correlation with available P, the value of Pretention can have correlation to many soil characteristics like exchangeable Ca, Mg and Al as investigated and stated by [16].…”

Section: Available Pmentioning

confidence: 75%