scholarly journals Short-term Influence of Organic Matter and Saline Water on Inorganic Soil Phosphorus Transformation in Barisal and Dumuria Soil Series of Bangladesh

2018 ◽  
pp. 1-9
Author(s):  
Md. Zulfikar Khan ◽  
Md. Ariful Islam ◽  
Russel Hossin ◽  
Md. Sadiqul Amin
Keyword(s):  
Organic Matter ◽  
Saline Water ◽  
Soil Phosphorus ◽  
Field Capacity ◽  
Inorganic Phosphorus ◽  
Cow Dung ◽  
Soil Series ◽  
Moisture Condition ◽  
Inorganic P ◽  
Phosphorus Transformation

A laboratory incubation experiment was carried out to investigate the influence of soil salinity and organic matter on inorganic phosphorus transformation with times in two different soil series such as Barisal and Dumuria located in Ganges Tidal Floodplain sites of Bangladesh. Two representative soil samples were collected from surface soil (0-15 cm) with composite sampling. The salinity and organic matter treatments were 4 dS m-1 and 5 t ha-1 (decomposed cow dung) with three replications. The treated soils were then incubated in the laboratory at field capacity moisture condition. To determine the transformation of different forms of inorganic P, sampling was done for 0, 7, 15 and 30 days. Different forms of inorganic P such as soluble and exchangeable phosphorus (SE-P), iron and aluminium bound phosphorus (Fe and Al-P), calcium bound phosphorus (Ca-P) and residual phosphorus (RE-P) were determined at different days of incubation. For Barisal soil series, the sequence of different forms of inorganic P was Ca-P>RE-P>Fe and Al-P>SE-P according to their amount. For Dumuria soil series, the sequence was Ca-P>RE-P>Fe and Al-P>SE-P, respectively. The sequence clearly indicates that the soluble and exchangeable P increases with time due to a combination of salinity and decomposed organic matter which increases the uptake of P and ultimately increases the yield. The changes were statistically significant (P < 0.001) in the case of all three soils.

scholarly journals Study of salinity effects on the inorganic phosphorus transformation in three different soil series of Ganges River Floodplain

2016 ◽  
Vol 5 (1) ◽  
pp. 71-79
Author(s):  
Sonia Nasrin ◽  
Tanmoy Kumar Biswas ◽  
Md Sadiqul Amin ◽  
Monowara Khatun
Keyword(s):  
Field Capacity ◽  
Inorganic Phosphorus ◽  
Ganges River ◽  
Soil Series ◽  
Moisture Condition ◽  
Inorganic P ◽  
River Floodplain ◽  
P Transformation ◽  
Exchangeable P ◽  
Phosphorus Transformation

The present study was carried out to investigate the effects of salinity level on different forms of inorganic phosphorus (P) transformation in three different soil series such as Amjhupi, Gopalpur and Bajoa located in Ganges River Floodplain. Two non-saline soils and one slightly saline soil with different textural classes were collected from these sites. The salinity treatments were 0, 6, 10 and 13 dSm-1 with three replications. The treated soils were then incubated in laboratory at field capacity moisture condition. To determine the transformation of different forms of inorganic P, sampling was done for 0, 14, 21, 42 and 84 days. Different forms of inorganic P such as soluble and exchangeable phosphorus (SE-P), iron and aluminium bound phosphorus (Fe and Al-P), calcium bound phosphorus (Ca-P) and residual phosphorus (RE-P) were determined. For Amjhupi soil series, the sequence of different forms of inorganic P was RE-P>Ca-P>Fe and Al-P>SE-P according to their amount. For Gopalpur and Bajoa soil series, the sequence was Ca- P>RE-P>Fe and Al-P>SE-P and RE-P>Ca-P>Fe and Al-P>SE-P, respectively. The sequence clearly indicates that the soluble and exchangeable P decreases with time due to salinity which reduces the uptake of P and ultimately reduces the yield. The changes were statistically significant (p<0.0001) in case of all three soils.Jahangirnagar University J. Biol. Sci. 5(1): 71-79, 2016 (June)

scholarly journals PENGARUH BAHAN ORGANIK TERHADAP DAYA IKAT AIR PADA TANAH ULTISOL LAHAN KERING

2021 ◽  
Vol 8 (2) ◽  
pp. 327-332
Author(s):  
Nikodemus Dongga Panda ◽  
Uska Peku Jawang ◽  
Lusia Danga Lewu
Keyword(s):  
Organic Matter ◽  
Water Content ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Field Capacity ◽  
Physical Characteristics ◽  
Cow Dung ◽  
Observation Data ◽  
Dry Land ◽  
Organic C

Ultisol is one of the soils with limited physical characteristics. The water content is low, the permeability is not enough to pass water into the soil, and the organic-C content is classified as moderate. So that it affects the soil in storing low water, one solution to overcome the physical characteristics of is to provide organic matter into the soil. The purpose of this study was to determine the physical characteristics of Ultisol and to determine the effect of the combination of organic matter from cow dung and rice husk ash on the soil water holding capacity of ultisols on dry land. This study was conducted at the Laboratory of Wira Wacana Christian University, Sumba. This study used a completely randomized design with six treatments and four replications. Observation data were subjected to analysis of variance followed by LSD advanced test with a confidence level of 5%. The results showed that the application of organic matter on the soil significantly affected water content, field capacity, permeability, and C-organic. The application of organic matter can improve soil structure, not soil texture gave a very significant effect, and the treatment that had the best water content was 75% cow dung + 25% rice husk ash.

scholarly journals Utilisation of inorganic and organic soil phosphorus in a hill country soil

1992 ◽  
pp. 65-69 ◽  
Author(s):  
K.W. Perrott
Keyword(s):  
Phosphate Rock ◽  
Organic Phosphorus ◽  
Soil Phosphorus ◽  
Organic Soil ◽  
Inorganic Phosphorus ◽  
P Fractions ◽  
Inorganic P ◽  
Soil P ◽  
Hill Country ◽  
Phosphate Rock Residues

Changes in phosphorus (P) fractions of unfertilised and fertilised (superphosphate) soil were investigated over five years at a hill country site near Te Kuiti. Only soil inorganic P (Pi) reserves were utilised for plant uptake when superphosphate was withheld at the site. Immobilisation of P as soil organic P (PO) contributed to depletion of the soil Pi reserves during the first two years of this trial. Where superphosphate was applied, immobilisation of P as PO amounted to about 25% of applied P during the five years measurements were made. Changes in soil P fractions indicated that all forms of soil Pi were utilised when superphosphate was withheld. These included readily available Pi, Al- Pi, Fe-Pi, and residual phosphate rock from previous fertiliser applications. Depletion of the phosphate rock residues in the soil also occurred where superphosphate was applied and appears to have been completed within about two years. The phosphate rock residues had probably accumulated because of the relatively high amounts of unacidulated phosphate rock in superphosphate manufactured before 1983. Accumulation of Po associated with humic acid, or adsorbed on surfaces of hy drous oxides of Al and Fe, occurred in both fertilised and unfertilised soils. The more labile forms of PO also increased in the fertilised soil. Keywords inorganic phosphorus, organic phosphorus, phosphorus immobilisation, soil phosphorus, soil phosphorus fractions, soil phosphorus utilisation.

The release of phosphorus from plant material added to soil

Soil Research ◽  
1978 ◽  
Vol 16 (1) ◽  
pp. 101 ◽  
Author(s):  
GJ Blair ◽  
OW Boland
Keyword(s):  
Plant Material ◽  
Soil Phosphorus ◽  
Field Capacity ◽  
Inorganic Phosphorus ◽  
Plant Residues ◽  
Turnover Rates ◽  
High Phosphorus ◽  
Low Phosphorus ◽  
Phosphorus Status ◽  
White Clover Plant

An experiment was conducted to study the release of 32P from white clover plant residues in the presence and absence of growing oats plants in both low and high phosphorus status soils. Net reutilization of phosphorus from the added plant material after 48 days was highest in the high phosphorus system in the presence of plants (29.3 %) and least in the low phosphorus system in the absence of plants (0.6%). Watering to field capacity daily, every 3 days, or every 6 days, had no significant effect on reutilization rates. Evidence from the soil inorganic phosphorus data suggests that the addition of plant material resulted in a significant immobilization of soil phosphorus only in the low phosphorus soil in the absence of plants. The significance of these findings is discussed in relation to the large number of incubation studies conducted to study phosphorus turnover rates in soil.

DISTRIBUTION OF ORGANIC MATTER AND PHOSPHORUS FRACTIONS IN A TOPOGRAPHIC SEQUENCE OF SOILS IN SOUTHERN BRITISH COLUMBIA

1965 ◽  
Vol 45 (3) ◽  
pp. 323-329 ◽  
Author(s):  
M. J. S. Floate
Keyword(s):  
British Columbia ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Organic Phosphorus ◽  
Inorganic Phosphorus ◽  
Similar Amount ◽  
Grassland Soils ◽  
Inorganic P ◽  
Parent Materials ◽  
C And N

In sequences of grassland soils on south-facing slopes and forested soils on north-facing slopes in southern British Columbia, pH decreased but C, N, and organic phosphorus (Po) increased with increase in elevation from 1800 to 7400 ft. At the highest elevations grassland and forested soils contained similar amounts of C, N, and Po. The surface horizons of grassland soils at the lowest elevations contained C and N in similar amount to forested soils between 4000 and 5000 ft. C, N, and Po decreased with depth in all profiles but the amount of H2SO4-soluble inorganic P (Pa) increased to its highest percentage of the total, up to 98%, in the parent materials. Although both C/N and C/Po ratios decreased with depth, the values for C/Po were not high and indicated that inorganic phosphorus supply is not limiting the accumulation of P in the soil organic matter. These properties were interpreted as the effects of climate, modified by elevation, aspect, and vegetation, on weakly weathered parent materials.

scholarly journals Organic acids promote phosphorus release from Mollisols with different organic matter contents

2020 ◽  
Vol 16 (No. 1) ◽  
pp. 59-66
Author(s):  
Xiaoyan Yang ◽  
Chuandong Zhang ◽  
Haiping Gu ◽  
Xiangwei Chen ◽  
Erhui Guo
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Organic Acids ◽  
Inorganic Phosphorus ◽  
Phosphorus Release ◽  
Chemical Fractionation ◽  
P Availability ◽  
Inorganic P ◽  
Soil P ◽  
Fractionation Method

Organic acids could improve the phosphorus (P) availability through enhancing the release of inorganic phosphorus (P<sub>i</sub>) in the soil. However, the effects of organic acids on the P<sub>i</sub> release are still poorly understood, especially from soils with different organic matter contents. Here, a biochemically produced humic acid and P fertiliser were added to the soil to modify the content of the soil organic matter (SOM) and soil P, respectively. And then the soil samples were incubated at 25 °C for 30 days. The release of P<sub>i</sub> fractions (such as H<sub>2</sub>O-P<sub>i</sub>, NaHCO<sub>3</sub>-P<sub>i</sub>, NaOH-P<sub>i</sub>, HCl-P<sub>i</sub>, and Residual-P) from the soils with different organic matter contents in the presence of citric, oxalic, and malic acids was evaluated using a sequential chemical fractionation method. The results showed that the release of the NaHCO<sub>3</sub>-P<sub>i</sub>, NaOH-P<sub>i</sub>, and HCl-P<sub>i</sub> fractions also showed a decreasing trend with an increasing content of soil organic matter, and more NaOH-P<sub>i</sub> than the other P<sub>i</sub> fractions was generally released in the presence of organic acids. Considering the types of organic acids, oxalic acid and malic acid most effectively and least effectively released P<sub>i</sub>, respectively. The path analysis indicated that the NaOH-P<sub>i</sub> release had the highest direct and indirect effects on the total inorganic P (TP<sub>i</sub>) release. NaOH-P<sub>i</sub> was, therefore, the most effective source of P<sub>i</sub> in the Mollisols.

scholarly journals Soil phosphorus dynamics on terrestrial natural ecosystems

2017 ◽  
Author(s):  
Leonardo Deiss ◽  
B. Anibal de Moraes ◽  
Vincent Maire
Keyword(s):  
Functional Groups ◽  
Soil Phosphorus ◽  
Inorganic Phosphorus ◽  
Parent Material ◽  
Total Carbon ◽  
Natural Ecosystems ◽  
Ecological Processes ◽  
Inorganic P ◽  
Soil P ◽  
Soil Weathering

Abstract. Soil organic and inorganic phosphorus (P) compounds can be modified by distinctive ecosystems properties. This study aims to analyze soil P dynamics on terrestrial natural ecosystems, relating its organic (monoesters, diesters, and phosphonate) and inorganic (orthophosphate, polyphosphate and pyrophosphate) functional groups with important temporal, edaphic and climatic characteristics. A dataset including 88 sites was assembled from published papers that have determined soil P composition by liquid state one-dimensional 31P nuclear magnetic resonance of soils extracted with NaOH EDTA. Bivariate and multivariate regression models were used to enable a comprehensive understanding of soil P dynamics at an unprecedented geographical scale. In bivariate relationships, soil P compounds had overall similar behaviors on mineral and organic layers but with different slopes. Temporal (weathering), edaphic and climatic properties of ecosystems, together explain up to 78 % (diester) and 57 % (orthophosphate) of the variation of organic and inorganic P forms across ecosystems. Soil, particularly pH, total carbon, and carbon-to-phosphorus ratio, over climate and weathering, were the predominant drivers to explain P variation. Only, the diester-to-monoester ratio was controlled by independent and combined effects of soil weathering and soil properties, likely deriving from parent material differences. We conclude that soil organic and inorganic P pools as well as their functional groups composition are determined by distinctive drivers that regulate key ecological processes governing their presence, transformation and persistence on terrestrial natural ecosystems.

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