scholarly journals Developing global pedotransfer functions to estimate available soil phosphorus

2018 ◽  
Vol 644 ◽  
pp. 1110-1116 ◽  
Author(s):  
Yones Khaledian ◽  
John N. Quinton ◽  
Eric C. Brevik ◽  
Paulo Pereira ◽  
Mojtaba Zeraatpisheh
Keyword(s):  
Soil Phosphorus ◽  
Pedotransfer Functions ◽  
Available Soil Phosphorus

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.

Response of Forage Chicory Seedlings to Available Soil Phosphorus in Two Soils in a Controlled Environment

2013 ◽  
Vol 44 (13) ◽  
pp. 1992-2007
Author(s):  
K. A. Cassida ◽  
J. G. Foster ◽  
J. M. Gonzalez ◽  
R. W. Zobel ◽  
M. A. Sanderson
Keyword(s):  
Soil Phosphorus ◽  
Controlled Environment ◽  
Available Soil Phosphorus

scholarly journals Phosphorus-acquisition strategies of canola, wheat and barley in soil amended with sewage sludges

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
C. Nobile ◽  
D. Houben ◽  
E. Michel ◽  
S. Firmin ◽  
H. Lambers ◽  
...  
Keyword(s):  
Soil Phosphorus ◽  
Specific Root Length ◽  
Cropping System ◽  
Root Traits ◽  
Sewage Sludges ◽  
P Acquisition ◽  
Acquisition Strategies ◽  
P Content ◽  
P Fertilizer ◽  
Available Soil Phosphorus

Abstract Crops have different strategies to acquire poorly-available soil phosphorus (P) which are dependent on their architectural, morphological, and physiological root traits, but their capacity to enhance P acquisition varies with the type of fertilizer applied. The objective of this study was to examine how P-acquisition strategies of three main crops are affected by the application of sewage sludges, compared with a mineral P fertilizer. We carried out a 3-months greenhouse pot experiment and compared the response of P-acquisition traits among wheat, barley and canola in a soil amended with three sludges or a mineral P fertilizer. Results showed that the P-acquisition strategy differed among crops. Compared with canola, wheat and barley had a higher specific root length and a greater root carboxylate release and they acquired as much P from sludge as from mineral P. By contrast, canola shoot P content was greater with sludge than with mineral P. This was attributed to a higher root-released acid phosphatase activity which promoted the mineralization of sludge-derived P-organic. This study showed that contrasted P-acquisition strategies of crops allows increased use of renewable P resources by optimizing combinations of crop and the type of P fertilizer applied within the cropping system.

Productivity and botanical composition of Mediterranean grassland in relation to residual phosphate

1999 ◽  
Vol 132 (4) ◽  
pp. 399-405 ◽  
Author(s):  
A. E. OSMAN ◽  
A. K. SALKINI ◽  
F. GHASSALI
Keyword(s):  
Soil Phosphorus ◽  
Biomass Productivity ◽  
Phosphate Fertilizer ◽  
Botanical Composition ◽  
Marginal Lands ◽  
Farming Communities ◽  
Native Grassland ◽  
P Fertilizer ◽  
Available Soil Phosphorus ◽  
Steep Slopes

The effects of residual phosphate (P) fertilizer were monitored for six seasons on Mediterranean grassland. The phosphate fertilizer was originally applied annually at three rates (0, 25 and 60 kg P2O5/ha) for 7 years (1984–1990) to phosphate-deficient grassland at Tel Hadya, northern Syria. The herbage biomass productivity, botanical composition and the seed bank in the soil were monitored for six seasons (1991/92–1996/97). The experiment was grazed at two annual stocking rates (1·1 sheep/ha (low) and 2·3 sheep/ha (high)). The experimental site was typical of native grassland within the cereal zone of west Asia, where cropping is not possible because of shallow, stony soils and steep slopes.Available soil phosphorus in May 1991 was 6·5, 20·8 and 40·1 mg P/kg under the 0, 25 and 60 kg P2O5/ha treatments and 6·6, 13·4 and 14·8 mg P/kg respectively, in May 1997. Yields of both legumes and total herbage (legume+grass+other species) were significantly influenced by the residual phosphate. Legume yields were between 6- and 7-times the control yield in the first two years of the study. This decreased with time but was still in the range of 1·5 to 1·9 times the yield of the control in 1997, six years later. Total herbage yield was consistently higher on the plots previously fertilized with P, which ranged between 1·5- and 2·5-times the control. Both legume seed and grass seeds were significantly larger with residual P, which ranged between 5·4- and 2·0-times the control for the legume and 2·5- and 1·4-times for the grasses. All these factors have practical implications for the use of P fertilizer on grassland which could help control soil erosion and improve livestock production on marginal lands on which farming communities largely depend.

scholarly journals Dazomet application suppressed watermelon wilt by the altered soil microbial community

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Feiying Zhu ◽  
Jiling Xiao ◽  
Yi Zhang ◽  
Lin Wei ◽  
Zhihuai Liang
Keyword(s):  
Microbial Community ◽  
Soil Microbial Community ◽  
Plant Immunity ◽  
Soil Phosphorus ◽  
Illumina Miseq ◽  
Control Group ◽  
Soil Microbial Diversity ◽  
Soil Microbial Community Structure ◽  
Soil Microbial ◽  
Available Soil Phosphorus

AbstractFusarium wilt disease causes severe decline of watermelon yield and quality. Researches have been reported that soil fumigation with dazomet can help control crop disease. Firstly, we discovered that the dazomet application suppressed watermelon wilt in field experiment compared to the control group. While the importance of microbial community in regulating plant health has been rising up, we therefore focused on examining the soil microbial diversity at six different sampling times after dazomet application by using Illumina MiSeq platform. Remarkably, our research results showed that some beneficial microbial genera have been altered, and these beneficial microbial genera have dominated the entire community, such as Nitrolancea, Pseudomonas and Penicillium after dazomet application. Instead, the relative abundance of Fusarium genus and the pathogen FON (Fusarium oxysporum f. sp. niveum, FON) had the decreased. As there was a significant accumulation of AP (available soil phosphorus) after dazomet application, we noticed that the beneficial microbes as Bacillus, Nitrolancea, Paenibacillus and Penicillium have significant positive correlation with AP but negatively related to morbidity. Together, these results demonstrate that the altered soil microbial community structure by dazomet application is critical to suppress watermelon Fusarium wilt. Thus, our results will drive investigations aimed to deploy interaction of microbiota contribute and plant immunity.

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