Addition of phosphorus to soils with low to medium phosphorus retention capacities. II. effect on soil phosphorus extractability

2000 ◽  
Vol 31 (15-16) ◽  
pp. 2591-2606 ◽  
Author(s):  
Roberto Indiati
Keyword(s):  
Soil Phosphorus ◽  
Phosphorus Retention

scholarly journals Relative influence of soil- vs. biochar properties on soil phosphorus retention

Geoderma ◽  
2016 ◽  
Vol 280 ◽  
pp. 82-87 ◽  
Author(s):  
Biswanath Dari ◽  
Vimala D. Nair ◽  
Willie G. Harris ◽  
P.K.R. Nair ◽  
Lynn Sollenberger ◽  
...  
Keyword(s):  
Soil Phosphorus ◽  
Relative Influence ◽  
Phosphorus Retention

Drosera rotundifolia growth and nutrition in a natural population with special reference to the significance of insectivory

1992 ◽  
Vol 70 (7) ◽  
pp. 1409-1416 ◽  
Author(s):  
C. Neal Stewart Jr. ◽  
Erik T. Nilsen
Keyword(s):  
Soil Phosphorus ◽  
Nutrient Retention ◽  
Phosphorus Retention ◽  
Flower Stalk ◽  
Nutrient Additions ◽  
Nutrient Enhancement ◽  
Growth And Nutrition ◽  
Drosera Rotundifolia ◽  
Limiting Nutrient ◽  
The Impact

The impact of nutrient addition on growth and nutrient accumulation in Drosera rotundifolia was studied in a field population. Experiments were performed by exclosing insects and (or) adding phosphorus and (or) nitrogen to soil. Drosera rotundifolia did not significantly benefit from insect capture nutritionally or energetically in native or nutritionally enhanced soils. Added nutrients to the soil or supplemental foliar insect feeding decreased phosphorus retention in hibernacula by 50%. Nutrient additions reduced D. rotundifolia vegetative growth in both N and P addition treatments. In addition, allocation to reproduction (inflorescences) decreased by 98% when N was added to the soil. Phosphorus retention in hibernacula was especially high in plots in which no nutrients were added via the soil or by insect applications. Although not statistically significant, flower stalk density and floral biomass were greater where insects were available to plants. The data from this study indicate that insectivory has little impact on growth of field grown D. rotundifolia. This species is adapted to low nutrient availability and nutrient enhancement reduces growth. Indices of nutrient retention suggest that phosphorus is conserved more than nitrogen and therefore may be an important limiting nutrient. Key words: insectivory, nitrogen, phosphorus, sundew.

Soil phosphorus retention in a Mediterranean pasture subjected to differential management

2014 ◽  
Vol 65 (4) ◽  
pp. 562-572 ◽  
Author(s):  
J. M. Serrano ◽  
S. Shahidian ◽  
J. R. Marques da silva
Keyword(s):  
Soil Phosphorus ◽  
Phosphorus Retention ◽  
Mediterranean Pasture

Evaluation of phosphorus retention equations for Manitoba soils

2008 ◽  
Vol 88 (3) ◽  
pp. 327-335 ◽  
Author(s):  
D V Ige ◽  
O O Akinremi ◽  
D N Flaten
Keyword(s):  
Soil Phosphorus ◽  
Calcareous Soils ◽  
Predictive Ability ◽  
Soil Samples ◽  
Soil Particle ◽  
Phosphorus Retention ◽  
Phosphorus Sorption ◽  
Retention Capacity ◽  
Manure Application ◽  
P Retention

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 (P150) and Langmuir adsorption maximum (Smax) were determined in the laboratory. The measured P retention capacities were then compared with those estimated using the formulated equations. Surprisingly, P150, which was obtained from a single measurement, was more robust than Smax that was obtained from at least 17 measurements as the equations provided a better estimate of P150 than Smax. 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 <7 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 CaM3, MgM3 and AlOx provided the best estimate of the PRC of Manitoba soils. Key words: Soil phosphorus, calcareous soils, phosphorus sorption, phosphorus retention, phosphorus retention capacity, estimating phosphorus retention capacity

Improved Plant Diversity as a Strategy to Increase Available Soil Phosphorus

2019 ◽  
Vol 103 (1) ◽  
pp. 43-45 ◽  
Author(s):  
Carlos Crusciol ◽  
João Rigon ◽  
Juliano Calonego ◽  
Rogério Soratto
Keyword(s):  
Crop Yields ◽  
Soil Phosphorus ◽  
Cropping System ◽  
P Availability ◽  
P Fractions ◽  
Crop Species ◽  
Soil P ◽  
Residue Decomposition ◽  
Available Soil Phosphorus ◽  
Crop Residue Decomposition

Some crop species could be used inside a cropping system as part of a strategy to increase soil P availability due to their capacity to recycle P and shift the equilibrium between soil P fractions to benefit the main crop. The release of P by crop residue decomposition, and mobilization and uptake of otherwise recalcitrant P are important mechanisms capable of increasing P availability and crop yields.

Effect of different fertilization systems on soil phosphorus fertility and crop yield

2009 ◽  
Vol 17 (5) ◽  
pp. 885-889
Author(s):  
Wan-Tai YU ◽  
Zi-Shao JIANG ◽  
Qiang MA ◽  
Hua ZHOU
Keyword(s):  
Crop Yield ◽  
Soil Phosphorus
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