Genotypic variation of rape in phosphorus uptake from sparingly soluble phosphate and its active mechanism

2012 ◽  
Vol 11 (13) ◽  
Author(s):  
Zhou Xin-Bin
Keyword(s):  
Genotypic Variation ◽  
Phosphorus Uptake ◽  
Soluble Phosphate ◽  
Active Mechanism ◽  
Sparingly Soluble Phosphate

Controlled Precipitation of Sparingly Soluble Phosphate Salts Using Enzymes. I. Controlled Development of Solution Supersaturation in Situ

2008 ◽  
Vol 8 (4) ◽  
pp. 1390-1398 ◽  
Author(s):  
Maria G. Lioliou ◽  
Aikaterini N. Kofina ◽  
Christakis A. Paraskeva ◽  
Pavlos G. Klepetsanis ◽  
Terje Østvold ◽  
...  
Keyword(s):  
Soluble Phosphate ◽  
Solution Supersaturation ◽  
Phosphate Salts ◽  
Sparingly Soluble Phosphate ◽  
Controlled Precipitation

Effects of lime on the residual effectiveness of phosphate in acid soils

Soil Research ◽  
1989 ◽  
Vol 27 (2) ◽  
pp. 425
Keyword(s):  
Detrimental Effect ◽  
Phosphorus Uptake ◽  
Acid Soils ◽  
The Other ◽  
Soluble Phosphate ◽  
Acidic Soils ◽  
Soil Phosphate ◽  
Native Soil ◽  
Induced Changes ◽  
Residual Effectiveness

The effectiveness of phosphate, applied 9 months previously, was compared with that of freshly applied phosphate in relation to lime-induced changes in several phosphate characteristics of 14 phosphate-deficient, acidic soils. Effectiveness was measured in terms of the yield and phosphorus uptake of white clover herbage in a glasshouse experiment. Lime increased yields on the majority of soils, whether phosphate was applied or not. These were accompanied by increases in uptake of soil phosphate, which were usually associated with higher levels of exchangeable and soluble phosphate but not of sodium bicarbonate-extractable phosphate. On the other hand, lime had much more variable effects on the apparent uptake of fertilizer phosphate which were unrelated to lime-induced changes in soil phosphate sorptivity. Lime increased the uptake of previously applied phosphate in all but two soils, and it had a more beneficial or less detrimental effect on the uptake of old phosphate than of fresh phosphate in 9 of the 14 soils. Because lime usually increases the uptake of soil phosphate but often depresses the uptake and effectiveness of fertilizer phosphate, the more beneficial effect of lime on phosphate residues is consistent with their partial transformation into compositions resembling native soil phosphates.

Controlled Precipitation of Sparingly Soluble Phosphate Salts Using Enzymes. II. Precipitation of Struvite

2009 ◽  
Vol 9 (11) ◽  
pp. 4642-4652 ◽  
Author(s):  
Aikaterini N. Kofina ◽  
Maria G. Lioliou ◽  
Christakis A. Paraskeva ◽  
Pavlos G. Klepetsanis ◽  
Terje Østvold ◽  
...  
Keyword(s):  
Soluble Phosphate ◽  
Phosphate Salts ◽  
Sparingly Soluble Phosphate ◽  
Controlled Precipitation

Genotypic differences in wheat for uptake and utilisation of P from iron phosphate

2002 ◽  
Vol 53 (7) ◽  
pp. 837 ◽  
Author(s):  
L. D. Osborne ◽  
Z. Rengel
Keyword(s):  
Genotypic Variation ◽  
Phosphorus Uptake ◽  
Dry Weight ◽  
Iron Phosphate ◽  
Phosphorus Efficiency ◽  
Genotypic Differences ◽  
Phosphorus Use Efficiency ◽  
Shoot Dry Weight ◽  
Shoot Weight ◽  
P Supply

Two glasshouse experiments were conducted to evaluate the genotypic variation amongst cereal genotypes in phosphorus uptake from relatively insoluble iron phosphate. Optimum rates of iron phosphate were established by growing 3 wheat and 1 triticale genotype on an infertile sand amended with iron phosphate. Shoot dry weight of all genotypes showed a classic Mitcherlich response with 95% maximum growth achieved with 174�mg P/kg soil. Two rates of FePO4 were selected representing a deficient and sufficient supply (26 and 339 mg P/kg soil, respectively). These rates were used to screen 99 wheat, 8 triticale, and 4 cereal rye genotypes for phosphorus-use efficiency. Phosphorus efficiency was rated by 4 criteria: shoot dry weight at deficient P supply, shoot weight at deficient supply relative to shoot weight at sufficient P supply, P uptake efficiency (amount of P taken up per unit of P supplied), and P utilisation efficiency (shoot weight per unit P in plant). No genotypes were rated as efficient under all 4 criteria. Only 2 genotypes were rated efficient (rye Bevy, rye PC00361) and one inefficient (Machete) under 3 criteria. Seven genotypes were rated as efficient on 2 indices (wheat Chinese 80-55, Westonia, and Wawht 2147; triticale Treat, AT48-94, and TX93-78-1; rye Bulgarian Pento), whereas 7 genotypes were rated as inefficient on 2 indices (Boricuta, Cadoux, Cunderdin, Insignia, Kalingri, Perenjori, and triticale Abacus). Significant genotypic variation was identified in cereals in the ability to take up and utilise P from poorly soluble Fe-P, although all genotypes were able to utilise this source of phosphorus to some degree.

The relationship in acid soils between base saturation and phosphorus uptake by grasses

1953 ◽  
Vol 43 (3) ◽  
pp. 329-333 ◽  
Author(s):  
H. F. Birch
Keyword(s):  
Acid Soil ◽  
Phosphorus Uptake ◽  
Acid Soils ◽  
Contributory Factor ◽  
Soluble Phosphate ◽  
Significant Relationships ◽  
Exchangeable Bases ◽  
Phosphate Availability ◽  
Percentage Saturation ◽  
The Relationship

Analyses of grass samples from seventeen fertilizer trials on acid soil showed that both the percentage phosphate in the grass and the amount of phosphate removed by the crop were significantly and directly related to the percentage saturation of the b.e.c. of the soil. The amount of acid-soluble phosphate by difference (Table 1, A — B) was also significantly and directly related to the percentage phosphate in the grass but not to the amount taken up by the crop. The amounts of exchangeable bases, exchangeable calcium and acid-soluble, adsorbed and watersoluble forms of phosphate showed no significant relationships with phosphate uptake and percentage phosphate in the grass.The percentage saturation of the b.e.c. was found to be, on the average, about five times as effective a contributory factor to the percentage phosphate in the grass as the amount of acid-soluble phosphate by difference. The results confirm previous work, which indicated that in acid soils the main form of available phosphate is that associated with the exchangeable bases the effective presence of which is governed by the percentage saturation of the b.e.c. It is considered that phosphate availability and response in acid soils are best assessed by considering the percentage saturation of the b.e.c. rather than the amounts of some form or forms of phosphate in the soil.The grass analyses also showed that when the amount of phosphorus (P) hi the dry grass exceeds 0·33% no response to phosphate is to be expected. When the percentage in the grass is less than 0·23% responses of 10% or more are likely.

Screening cereals for genotypic variation in efficiency of phosphorus uptake and utilisation

2002 ◽  
Vol 53 (3) ◽  
pp. 295 ◽  
Author(s):  
L. D. Osborne ◽  
Z. Rengel
Keyword(s):  
Dry Matter ◽  
Shoot Growth ◽  
Genotypic Variation ◽  
Phosphorus Uptake ◽  
Dry Weight ◽  
P Efficiency ◽  
P Content ◽  
Shoot Growth Rate ◽  
Utilisation Efficiency ◽  
P Supply

One hundred and six Australian cereal genotypes, including wheat, triticale, and rye, were screened for their ability to take up and utilise soluble phosphorus at different rates of P supply. Plants were screened in outdoor tanks irrigated at regular intervals with nutrient solution amended with 3 rates of P. Genotypes were ranked according to the following 3 criteria: shoot growth at deficient P supply, the relative shoot growth rate (dry weight at deficient P/dry weight at sufficient P), and phosphorus utilisation efficiency (amount of dry matter produced per unit of P accumulated in shoots corrected for seed P content). Considerable genotypic variation in growth and P utilisation efficiency was found in the cereal germplasm. Rye and triticale were generally more efficient in taking up and utilising P than wheat at low rates of P supply. Wheat genotypes Egret and Durati showed relatively high, and genotype Cadoux relatively low, P efficiency.

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