scholarly journals Assessing soil P fractions changes with long‐term phosphorus fertilization related to crop yield of soybean and maize

2020 ◽  
Vol 36 (3) ◽  
pp. 524-535 ◽  
Author(s):  
Stefania C. Appelhans ◽  
Pedro Anibal Barbagelata ◽  
Ricardo Jose Miguel Melchiori ◽  
Flavio Gutierrez Boem
Keyword(s):  
Crop Yield ◽  
Phosphorus Fertilization ◽  
P Fractions ◽  
Soil P ◽  
Soil P Fractions

scholarly journals Long-Term Mineral Fertilization Improved the Grain Yield and Phosphorus Use Efficiency by Changing Soil P Fractions in Ferralic Cambisol

Agronomy ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 784 ◽  
Author(s):  
Waqas Ahmed ◽  
Kailou Liu ◽  
Muhammad Qaswar ◽  
Jing Huang ◽  
Qinghai Huang ◽  
...  
Keyword(s):  
Grain Yield ◽  
Paddy Soils ◽  
P Fractions ◽  
Mineral Fertilization ◽  
Mineral N ◽  
Soil P ◽  
Soil P Fractions ◽  
Use Efficiency ◽  
Labile P

Elevated mineral fertilization may change the composition and increase the availability of soil phosphorus (P) in subtropical paddy soils and thus affect long-term plant growth. However, an understanding of the response of soil P fractions to long-term nitrogen, phosphorus and potassium (NPK) additions remains elusive. This study aimed to explore the responses of soil P-fractions and their mobility to different long-term chemical fertilization rates under a double rice cropping system. The rates of nitrogen (N), phosphorus (P), and potassium (K) in the low NPK treatment (LNPK) were 90, 45, and 75 kg ha−1 year−1, respectively, and in the high NPK treatment (HNPK), they were 180, 90, and 150 kg ha−1 year−1, respectively. The results showed that the concentrations of soil organic matter (SOM), total P, Olsen P, total N, and mineral N were remarkably increased under HNPK by 17.46%, 162.66%, 721.16%, 104.42%, and 414.46%, respectively, compared with those under control (CT). Compared to the CT P fractions, HNPK increased the labile P fractions (i.e., NaHCO3-Pi and NaHCO3-Po) by 322.25% and 83.53% and the moderately labile P fractions (i.e., NaOH-Pi, NaOH-Po and HCl. dil. Pi) by 163.54%, 183.78%, and 3167.25% respectively, while the non-labile P was decreased by the HNPK addition. P uptake and grain yield were increased by LNPK and HNPK by 10.02% and 35.20%, respectively, compared with CT. P use efficiency indices were also higher under HNPK than under LNPK. There was a strong positive relationship between grain yield and P use efficiency (R2 = 0.97). A redundancy analysis (RDA) showed a strong correlation between soil chemical properties and the labile and moderately labile P pools. Structural equation modeling (SEM) revealed that SOM, mineral N, and available P strongly control the labile P pool. In conclusion, NPK additions under the paddy soils significantly influences the soil P fractions. The soil P dynamics and the mechanisms governing the interactions between plants and soil nutrients are clearly explained in this study.

scholarly journals Seasonal Variations and Thinning Effects on Soil Phosphorus Fractions in Larix principis-rupprechtii Mayr. Plantations

Forests ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 172 ◽  
Author(s):  
Huixia Tian ◽  
Xiaoqin Cheng ◽  
Hairong Han ◽  
Hongyuan Jing ◽  
Xujun Liu ◽  
...  
Keyword(s):  
Seasonal Variations ◽  
Management Practice ◽  
Management Strategies ◽  
Chemical Properties ◽  
P Availability ◽  
P Fractions ◽  
Soil P ◽  
Thinning Intensity ◽  
Soil P Fractions ◽  
P Bioavailability

Thinning is a common management practice in forest ecosystems. However, understanding whether thinning treatment will change the availability of phosphorus (P) in soils, and the effect of thinning on the seasonal dynamics of soil P fractions, are still limited. The objective of the present study was to assess seasonal variations in soil P fractions under different forest thinning management strategies in a Larch (Larix spp.) plantation in northern China. To accomplish this, we examined soil P fractions, soil physical–chemical properties, and litter biomass under control (CK), light (LT), moderate (MT) and high thinning (HT) treatments. Data were collected during the growing season of 2017. We found that most P fractions varied seasonally at different soil depths, with the highest values occurring in the summer and autumn. When compared to CK, MT enhanced the inorganic P (Pi) concentration extracted by resin strip (R-Pi). Labile organic P (Labile Po), moderately labile P and total P (TP) also increased in both MT and HT treatments irrespective of season. In contrast, less-labile Pi and Po fractions were lower in LT than in CK, especially when examining deeper soil layers. Our results suggest that LT leads to a strong ability to utilize Po and less-labile Pi. Moreover, the effect of thinning did not tend to increase with thinning intensity, P availability was maximized at the MT. Ultimately, we show that MT can improve soil P bioavailability and is recommended in Larix principis-rupprechtii Mayr. plantations of North China. Our results emphasize that the effect of thinning management on soil microenvironment is an important basis for evaluating soil nutrients such as soil P bioavailability.

scholarly journals Identification of soil P fractions that are associated with P loss from surface runoff under various cropping systems and fertilizer rates on sloped farmland

PLoS ONE ◽  
2017 ◽  
Vol 12 (6) ◽  
pp. e0179275 ◽  
Author(s):  
Xinghua Li ◽  
Baona Wang ◽  
Tewu Yang ◽  
Duanwei Zhu ◽  
Zhongnan Nie ◽  
...  
Keyword(s):  
Surface Runoff ◽  
Cropping Systems ◽  
P Fractions ◽  
Soil P ◽  
Soil P Fractions ◽  
P Loss ◽  
Fertilizer Rates

Consequences of Ontario P index recommendations for reduced manure and fertilizer phosphorus applications on corn yields and soil phosphorus

2016 ◽  
Vol 96 (2) ◽  
pp. 191-198 ◽  
Author(s):  
M.A. Ribey ◽  
I.P. O’Halloran
Keyword(s):  
Crop Production ◽  
P Fractions ◽  
Environmental Indices ◽  
P Fractionation ◽  
Soil P ◽  
Olsen P ◽  
Soil P Fractions ◽  
Application Rates ◽  
P Index ◽  
The Impact

Environmental indices for soil P limit P applications when soil tests and risk of P losses exceed a given threshold. Producers’ reluctance to reduce P inputs often stem from concerns regarding reduced crop production and soil fertility. Our objectives were to identify changes in soil P fractions after 4 yr of repeated manure or fertilizer P applications at rates ≤ crop removal by corn (Zea mays L.), and the impact of these applications on yields. Olsen P and soil P fractions extracted using a modified Hedley P fractionation procedure were measured. Corn yields were nonresponsive to P applications. After 4 yr, Olsen P was 16.6 and 24.6 mg kg−1 at the application rates of 0 and 33 kg P ha−1 yr−1, respectively, for the inorganic fertilizer treatment indicating that soil P drawdown was occurring. Only the most labile forms of Pi (resin and bicarbonate extractable) were affected by treatment, with greater values at higher P application rates. Adherence to Ontario’s P index recommendations for P applications at or below crop removal should not be a crop production concern. Furthermore, given the rate of soil labile P drawdown, routine soil testing (every 3–5 yr) would identify agronomically significant changes in soil test P before the crop yield is impacted.

Soil phosphorus fractionation after co-applying biochar and paper mill biosolids

2020 ◽  
Author(s):  
Noura Ziadi ◽  
Xiangru Zhang ◽  
Bernard Gagnon ◽  
Eric Manirakiza
Keyword(s):  
Sandy Loam ◽  
Paper Mill ◽  
Phosphorus Fractionation ◽  
Stable Form ◽  
P Availability ◽  
P Fractions ◽  
Soil P ◽  
Soil P Fractions ◽  
Soil P Availability ◽  
Incubation Study

In recent decades, there has been a growing interest in the recycling of organic materials such as paper mill biosolids (PB) and biochar for use as soil amendments. However, the benefits of co-application of PB and biochar and its effects on soil P availability remain unknown. An incubation study was conducted on two acidic soils to assess the effect of two PB types (2.5% w/w) co-applied with three rates (0%, 2.5%, and 5% w/w) of pine (Pinus strobus L.) biochar on soil P fractions. An unfertilized control and a mineral NP fertilizer were used as a reference. Soil P fractions were determined by Hedley procedure after 2 and 16 weeks of incubation. Material fractionation indicated that the PB containing the highest total P and the lowest Al content had the highest proportion of labile P, whereas most P in the biochar was in a stable form. The incubation study revealed that the P-rich PB increased P availability in both soils to a level comparable to mineral fertilizer at the end of the incubation. The addition of biochar to PB, however, did not affect soil P availability, but the highest rate induced a conversion of P fixed to Al and Fe oxides towards recalcitrant forms, particularly in the sandy loam soil. We conclude that co-applying biochar and PB could be more beneficial than application biochar alone and soils amended with such a mixture would be expected to release part of their P slowly over a longer period of time.

scholarly journals Effect of Freeze–Thaw Cycles on Phosphorus Fractions and Their Availability in Biochar-Amended Mollisols of Northeast China (Laboratory Experiment)

2019 ◽  
Vol 11 (4) ◽  
pp. 1006 ◽  
Author(s):  
Ying Han ◽  
Xiangwei Chen ◽  
Byoungkoo Choi
Keyword(s):  
Moisture Content ◽  
Path Coefficient ◽  
P Availability ◽  
P Fractions ◽  
P Fractionation ◽  
Soil P ◽  
Freeze Thaw ◽  
Soil P Fractions ◽  
Labile P ◽  
Biochar Amendment

Freeze–thaw cycles stimulate the release of available soil phosphorus (P) in winter, and biochar as a soil amendment could improve P availability. Nevertheless, it is unclear how freeze–thaw cycles and biochar amendment interact to affect the soil P fractions and their availability in winter, particularly under different soil water conditions. We simulateda freeze–thaw cycle experimentto assess the effects of three factors on soil P fractions: soil moisture content (22%, 31%, and 45%), frequencies of freeze–thaw cycles (0, 1, 3, 6, and 12 times) and biochar amendment (soil and biochar-amended soil). Modified Hedley sequential P fractionation was conducted to measure the soil P fractions. Increasing the number of freeze–thaw cycles increased soil labile P fractions in the soil with the lowest moisture content (22%). After biochar amendment, the content of labile P decreased as the number of freeze–thaw cycles increased. Biochar amendment enhanced P availability in Mollisols owing to the direct effect of NaOH-Po, which has a large direct path coefficient. Principal components analysis showed that moisture content was a major factor influencing the variation in the P fractions. The P fractions were separated by the interactive effects of biochar amendment and freeze–thaw cycles in soils with a higher moisture content (45%), indicating that the effects of freeze–thaw cycles on P availability appear to be more pronounced in biochar-amended Mollisols of higher water contents.

scholarly journals Effect of organic and mineral fertilizers on soil P and C levels, crop yield and P leaching in a long term trial on a silt loam soil

2014 ◽  
Vol 197 ◽  
pp. 309-317 ◽  
Author(s):  
T. Vanden Nest ◽  
B. Vandecasteele ◽  
G. Ruysschaert ◽  
M. Cougnon ◽  
R. Merckx ◽  
...  
Keyword(s):  
Crop Yield ◽  
Mineral Fertilizers ◽  
Silt Loam ◽  
Soil P ◽  
Silt Loam Soil ◽  
Organic And Mineral Fertilizers ◽  
Term Trial ◽  
Loam Soil ◽  
P Leaching

scholarly journals Phosphorus Speciation in Long-Term Drained and Rewetted Peatlands of Northern Germany

Soil Systems ◽  
2020 ◽  
Vol 4 (1) ◽  
pp. 11
Author(s):  
Wakene Negassa ◽  
Dirk Michalik ◽  
Wantana Klysubun ◽  
Peter Leinweber
Keyword(s):  
Total Concentration ◽  
Long Term Effects ◽  
P Fractions ◽  
Edge Structure ◽  
Soil P ◽  
Wet Chemical ◽  
Labile P ◽  
X Ray Absorption ◽  
Total P

Previous studies, conducted at the inception of rewetting degraded peatlands, reported that rewetting increased phosphorus (P) mobilization but long-term effects of rewetting on the soil P status are unknown. The objectives of this study were to (i) characterize P in the surface and subsurface horizons of long-term drained and rewetted percolation mires, forest, and coastal peatlands and (ii) examine the influence of drainage and rewetting on P speciation and distributions using wet-chemical and advanced spectroscopic analyses. The total P was significantly (p < 0.05) different at the surface horizons. The total concentration of P ranged from 1022 to 2320 mg kg−1 in the surface horizons and decreased by a factor of two to five to the deepest horizons. Results of the chemical, solution 31P nuclear magnetic resonance (NMR), and P K-edge X-ray absorption near-edge structure (XANES) indicated that the major proportions of total P were organic P (Po). In the same peatland types, the relative proportions of Po and stable P fractions were lower in the drained than in the rewetted peatland. The results indicate that long-term rewetting not only locks P in organic matter but also transforms labile P to stable P fractions at the surface horizons of the different peatland types.

Long-term crop rotation and fertilizer effects on phosphorus transformations: II. In a Luvisolic soil

1992 ◽  
Vol 72 (4) ◽  
pp. 581-589 ◽  
Author(s):  
R. H. McKenzie ◽  
J. W. B. Stewart ◽  
J. F. Dormaar ◽  
G. B. Schaalje
Keyword(s):  
Sodium Bicarbonate ◽  
Sequential Extraction ◽  
Sodium Hydroxide ◽  
Crop Rotation ◽  
Soil Phosphorus ◽  
Fertilizer Application ◽  
P Fractions ◽  
Soil P ◽  
P Transformations

The effects of different cropping systems, fertilizer, and lime on soil phosphorus (P) dynamics in soils developed under forest vegetation have received little attention. The objective of this study was to develop an understanding of P fractions and transformations in long-term rotation plots on a Luvisolic soil at Breton, Alberta. Results have shown that crop rotation and fertilizer application have affected more inorganic soil phosphorus (Pi) and organic phosphorus (Po) fractions, as determined by a sequential extraction procedure. Continuously cropped treatments, which had not received fertilizer, resulted in P drawdown of resin-extractable Pi (resin-Pi), sodium bicarbonate-extractable Pi (bicarb-Pi), sodium hydroxide-extractable Pi (NaOH-Pi), sodium bicarbonate-extractable Po (bicarb-Po), sodium hydroxide-extractable Po (NaOH-Po) and hydrochloric acid-extractable Pi (HCl-Pi) fractions. Only the residual-P fraction (insoluble Pi and stable Po forms) was unaffected. Addition of fertilizer had an effect on all P fractions except the NaOH-Po fraction. Phosphorus fertilizer treatments positively affected the Pi fractions and N fertilizer positively affected the bicarb-Po fraction. Lime application affected soil pH, which lowered NaOH-Pi levels and increased HCl-Pi levels through formation of more stable calcium phosphate compounds. Addition of lime also resulted in lower bicarb-Po levels. Cropping without using phosphate fertilizer has resulted in a 30–40% decline in total-P in the Breton plots in the Ap horizon. Continuous cropping, with a forage crop in the rotation, coupled with modest N and P fertilizer application, had the most positive effects on P cycling and transformations. Summerfallow had no apparent beneficial effects on P transformations. Key words: Soil P transformations, Luvisolic soil, P bioavailability, sequential extraction

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