The influence of soil properties on the effectiveness of phosphate rock fertilisers

Soil Research ◽  
2001 ◽  
Vol 39 (4) ◽  
pp. 773 ◽  
Author(s):  
M. D. A. Bolland ◽  
R. J. Gilkes ◽  
R. F. Brennan
Keyword(s):  
Soil Ph ◽  
Phosphate Rock ◽  
Soil Property ◽  
Relative Effectiveness ◽  
Titratable Acidity ◽  
Stepwise Multiple Regression ◽  
Retention Capacity ◽  
Organic C ◽  
Complex Interactions ◽  
Soil Test P

Eighteen soils from south-western Australia were used to measure the effectiveness of 2 reactive phosphate rocks (RPR) [North Carolina and Sechura (Bayovar) RPRs] relative to superphosphate (relative effectiveness, or RE) using (i) yield of dried shoots of 30-day-old wheat plants (REyield ), (ii) P content of the dried shoots (RE Pcontent ), and (iii) bicarbonate soil test P (RE bicP ) as measures of effectiveness. The RE values were positively related to PR dissolution in soil, titratable acidity, and to P and Ca retention by soil, and were negatively related to soil pH. No single soil property adequately predicted REyield , RE Pcontent, or RE bicP . Stepwise multiple regression indicated that: (1) PR dissolution, soil pH, and organic carbon together accounted for about half the variation in RE yield ; (2) organic C, soil pH, and titratable acidity together accounted for about 67% of the variation in RE Pcontent ; (3) PR dissolution, P retention capacity, and titratable acidity together accounted for about 71% of the variation in RE bicP . We conclude that the agronomic effectiveness of phosphate rock fertilisers is a consequence of complex interactions of phosphate rock with soil that cannot be adequately predicted by measurements of a single soil property.

A comparison between plant response and chemical measurements of the dissolution of reactive phosphate rock in soils of different pH and phosphorus retention

Soil Research ◽  
1987 ◽  
Vol 25 (4) ◽  
pp. 451 ◽  
Author(s):  
IAK Kanabo ◽  
RJ Gilkes
Keyword(s):  
Soil Ph ◽  
Phosphate Rock ◽  
Dry Weight ◽  
Plant Response ◽  
Retention Capacity ◽  
Chemical Measurements ◽  
Weight Yield ◽  
P Content ◽  
Soluble P ◽  
P Retention

Chemical measurements of the dissolution of reactive North Carolina phosphate rock (PR) in a lateritic podzolic soil adjusted to different pH values or amended to different P retention capacities were compared with plant response data. Soil pH adjustment consisted of incubating soil mixed with dilute HCl or solid SrCO3. The P retention capacity was adjusted by adding different amounts of synthetic goethite. Clover was grown as a test crop under glasshouse conditions on soils treated with no P and 800 �g Pg-1 soil as PR. The dissolution of PR, measured as the increase in soil exchangeable Ca (�Ca) at harvest time, increased by 46% for a decrease in soil pH from 5.78 to 4.55. Both dry weight and P content of clover tops showed no response to the greater PR dissolution at low soil pH, although twice as much P was bicarbonate-soluble at pH 4 55 compared with pH 5.78. This increase in bicarbonate-soluble P was only partly due to the greater dissolution of PR. Increasing the goethite content of the soil by 9% resulted in a 107% increase in PR dissolution but induced a 54% decrease in the bicarbonate-soluble P level compared with the control soil and consequently reduced both dry weight yield and P content of clover tops by 19% and 34% respectively.

Nutrient and microbial dynamics of soils amended with sewage sludge stabilized with clay minerals and biochar; a preliminary study.

2021 ◽  
Author(s):  
Georgios Giannopoulos ◽  
Anastasia-Garyfallia Karagianni ◽  
Athanasios Balidakis ◽  
Ioannis Ipsilantis ◽  
Theodora Matsi
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Clay Minerals ◽  
Soil Ph ◽  
Acidic Soil ◽  
Alkaline Soil ◽  
Critical Levels ◽  
Microbial Dynamics ◽  
Air Drying ◽  
Organic C

<p>Sewage sludge production from wastewater treatment plants (WWTP) progressively exceeds 60 Million m<sup>3</sup> p.a. in the EU. Although it is rich in organic matter (OM) and essential nutrients for crop production, sewage sludge is mainly disposed in landfills. Under the framework of Cyclic Economy and EU Green Deal, sewage sludge represents an ideal soil amendment and fertilizer with a potential to increase soil OM, provide nutrients and reduce chemical fertilization. Nonetheless, its agronomic use comes with limitations due to the presence of heavy metals and pathogenic microorganisms. Several stabilization technologies, including composting, thermal treatment and liming, aim to produce safe sewage sludge products suitable for agronomic use.</p><p>This incubation study investigated the effects of municipal sewage sludge (stabilized by alternative and common methods) on nutrient and microbial dynamics in two soils; an acidic (pH 5) and an alkaline (pH 8). Stabilized sewage sludge (Thessaloniki WWTP, Greece) with clay minerals (bentonite and vermiculite), biochar (pine residues), Ca(OH)<sub>2</sub> and air-drying, was applied at 1% and 3% dw, in soil mesocosms (300 g). Non-amended soils were also included as control. Soils were incubated (15 days; 25<sup>o</sup>C) and equilibrated with periodic wetting and air-drying. Then, chemical soil properties, heavy metal concentrations and microbial abundance were determined using standard methods.</p><p>Treated sewage sludge addition in the acidic soil, noticeably increased soil pH (pH 5.2 – 8.5), compared to the control treatment (pH 5.0). In the alkaline soil, pH remained at similar levels (pH 8.1 – 8.6). Interestingly, EC increased from 0.42 up to 4.10 and 0.80 up to 3.08 dS m-1 for the acidic and alkaline soils, respectively. The C/N ratio was approx. 10 for all treatments, except biochar (C/N=16). Higher NO<sub>3</sub><sup>-</sup> concentrations were observed for (CaOH)<sub>2</sub>, biochar and vermiculite stabilized sewage sludge treatments, and higher NH<sub>4</sub><sup>+</sup> concentrations were observed for air-dried, bentonite and vermiculite stabilized sewage sludge treatments, in both soils, when compared to the control. Heavy metal concentration increased in all treatments, yet, it remained below legislative critical levels. Sewage sludge amendment increased total heterotroph abundance in all treatments (5.4 – 7.5 log<sub>10</sub> CFU g<sup>-1</sup>) compared to the control. Antibiotic resistant prokaryote abundance ranged between 3.9 – 7.0 log<sub>10</sub> CFU g<sup>-1</sup> and no persistent pattern was found. Pathogens remained below legislative critical levels in all treatments.</p><p>Our preliminary results show that stabilized sewage sludge has the potential to be a safe soil conditioner and fertilizer under the framework of Cyclic Economy and EU Green Deal. A desirable increase in soil fertility and organic C was observed for both soils, and an advantageous pH increase for acidic soil. Though, care should be taken not to exceed EC>2 dS m<sup>-1</sup> when amending agricultural soils with sewage sludge products. Also, further experimentation is required to understand the effects of soil amendments on plant nutrition and productivity.</p><p> </p><p>Funding Acknowledgement: The research work was supported by the Hellenic Foundation for Research and Innovation (H.F.R.I.) under the “First Call for H.F.R.I. Research Projects to support Faculty members and Researchers and the procurement of high-cost research equipment grant” (Project Number: HFRI-FM17-1907).</p>

scholarly journals Field Proximal Soil Sensor Fusion for Improving High-Resolution Soil Property Maps

Soil Systems ◽  
2020 ◽  
Vol 4 (3) ◽  
pp. 52
Author(s):  
Gustavo M. Vasques ◽  
Hugo M. Rodrigues ◽  
Maurício R. Coelho ◽  
Jesus F. M. Baca ◽  
Ricardo O. Dart ◽  
...  
Keyword(s):  
Soil Properties ◽  
Ordinary Kriging ◽  
Soil Property ◽  
Clay Content ◽  
Exchange Capacity ◽  
Organic C ◽  
Covariate Data ◽  
Independent Validation ◽  
Soil Sensors ◽  
Dense Grid

Mapping soil properties, using geostatistical methods in support of precision agriculture and related activities, requires a large number of samples. To reduce soil sampling and measurement time and cost, a combination of field proximal soil sensors was used to predict and map laboratory-measured soil properties in a 3.4-ha pasture field in southeastern Brazil. Sensor soil properties were measured in situ on a 10 × 10-m dense grid (377 samples) using apparent electrical conductivity meters, apparent magnetic susceptibility meter, gamma-ray spectrometer, water content reflectometer, cone penetrometer, and portable X-ray fluorescence spectrometer (pXRF). Soil samples were collected on a 20 × 20-m thin grid (105 samples) and analyzed in the laboratory for organic C, sum of bases, cation exchange capacity, clay content, soil volumetric moisture, and bulk density. Another 25 samples collected throughout the area were also analyzed for the same soil properties and used for independent validation of models and maps. To test whether the combination of sensors enhances soil property predictions, stepwise multiple linear regression (MLR) models of the laboratory soil properties were derived using individual sensor covariate data versus combined sensor data—except for the pXRF data, which were evaluated separately. Then, to test whether a denser grid sample boosted by sensor-based soil property predictions enhances soil property maps, ordinary kriging of the laboratory-measured soil properties from the thin grid was compared to ordinary kriging of the sensor-based predictions from the dense grid, and ordinary cokriging of the laboratory properties aided by sensor covariate data. The combination of multiple soil sensors improved the MLR predictions for all soil properties relative to single sensors. The pXRF data produced the best MLR predictions for organic C content, clay content, and bulk density, standing out as the best single sensor for soil property prediction, whereas the other sensors combined outperformed the pXRF sensor for the sum of bases, cation exchange capacity, and soil volumetric moisture, based on independent validation. Ordinary kriging of sensor-based predictions outperformed the other interpolation approaches for all soil properties, except organic C content, based on validation results. Thus, combining soil sensors, and using sensor-based soil property predictions to increase the sample size and spatial coverage, leads to more detailed and accurate soil property maps.

Study on the Effect of the Use of FGD Gypsum into the Alkalization Soil to Improve Soil Property

2013 ◽  
Vol 448-453 ◽  
pp. 482-487
Author(s):  
Yu Bo Li ◽  
Qing Tao Xu
Keyword(s):  
Soil Ph ◽  
Soil Property ◽  
Ph Value ◽  
Growth Index ◽  
Salt Resistance ◽  
Jilin Province ◽  
Fresh Weight ◽  
The West ◽  
Fgd Gypsum ◽  
The Difference

Through this pot experiment of corns, the paper studied the effect of the use of FGD gypsum into the alkalization soil to improve corn output and soil property in the alkalization soil of the west of Jilin Province. The study indicated that FGD gypsum reduced effectively the PH value of the alkalization soil and improved the corn output. When the amount of FGD gypsum was 3t/667m2, the growth index of planting corn, such as the plant height, root length, plant fresh weight, was the best. But when the amount of FGD gypsum was 2t/667m2, the difference was not obvious. The results indicated that considering the factors of soil PH value and salt-resistance, when the amount of FGD gypsum was 2t/667m2, the effect of the use of FGD gypsum of the alkalization soil in the west of Jilin Province to improve soil property was the best.

EFFECT OF COMBINING ORGANIC RESIDUES WITH MINJINGU PHOSPHATE ROCK ON SORPTION AND AVAILABILITY OF PHOSPHORUS AND MAIZE PRODUCTION IN ACID SOILS OF WESTERN KENYA

2007 ◽  
Vol 43 (1) ◽  
pp. 51-66 ◽  
Author(s):  
M. N. KIFUKO ◽  
C. O. OTHIENO ◽  
J. R. OKALEBO ◽  
L. N. KIMENYE ◽  
K. W. NDUNG'U ◽  
...  
Keyword(s):  
Soil Ph ◽  
Phosphate Rock ◽  
Farmyard Manure ◽  
Combined Treatment ◽  
Chicken Manure ◽  
Available P ◽  
Organic Residues ◽  
Maize Production ◽  
Study Results ◽  
Minjingu Phosphate Rock

Experiments were conducted in both the greenhouse and the field on highly weathered (Orthic Ferralsol) soils to evaluate the effect of combining on-farm organic residues (chicken manure, farmyard manure, sugar bagasse) with Minjingu phosphate rock (MPR) on soil pH, extractable (available) and sorbed phosphorus (P), and to assess the cost benefit for maize production. The greenhouse study results indicated that, in the first eight weeks of incubation, soil pH increased linearly with increase in MPR rates and decreased thereafter. The available P also increased linearly. Chicken manure and sugar bagasse were most and least effective respectively in reducing P sorption, while there was a significant negative relationship between P adsorption maxima and extractable P. The field experiment data showed that the available P values increased significantly above the control in all the treatments where MPR and organic materials were applied separately or combined. Treatment effects on Langmuir sorption maxima (Smax) in the field were variable. An increase in Smax with an increase in MPR rates was noted. However, there was a positive relationship between Smax and available P (r = 0.52 to 0.69), suggesting the diversity of factors affecting the complex nature of P dynamics under field conditions. MPR applied alone in the first season gave a significant residual positive effect on maize grain yield for two additional seasons. The economic analysis revealed that a single application of chicken manure (2 t ha−1) combined with MPR at 60 kg P ha−1 gave the highest incremental net benefit equivalent to US$ 657 ha−1 during the three maize cropping seasons.

scholarly journals Long term trends in fertility of soils under continuous cultivation and cereal cropping in southern Queensland. II. Total organic carbon and its rate of loss from the soil profile

Soil Research ◽  
1986 ◽  
Vol 24 (2) ◽  
pp. 281 ◽  
Author(s):  
RC Dalal ◽  
RJ Mayer
Keyword(s):  
Activity Ratio ◽  
Clay Content ◽  
Continuous Cultivation ◽  
Stepwise Multiple Regression ◽  
Annual Rainfall ◽  
Aggregation Index ◽  
Organic C ◽  
Long Term Trends ◽  
Kinetics Of

The kinetics of organic C loss were studied in six southern Queensland soils subjected to different periods (0-70 years) of cultivation and cereal cropping. The equation: Ct = Ce + (C0 - Ce)exp(- kt), where C0, Ce and C, are organic C contents initially, at equilibrium and at time k respectively, and k is the rate of loss of organic C from soil, was employed in the study. The parameter k was calculated both for %C (kc) and for weight of organic C/volume of soil (k,), determined by correcting for differences in sampling depth due to changes in bulk density upon cultivation. Mean annual rainfall largely determined both C, and Ce, presumably by influencing the amount of dry matter produced. Values of kc and kw varied greatly among the soils studied. For the 0-0.1 m depth, kw was 0.065, 0.080, 0.180, 0.259, 0.069 and 1.224 year-1 respectively for Waco (black earth - initially grassland), Langland-Logie (grey brown and red clays - brigalow), Cecilvale (grey, brown and red clays - poplar box), Billa Billa (grey, brown and red clays - belah), Thallon (grey, brown and red clays - coolibah) and Riverview (red earths - silver-leaved ironbark). The k values were significantly correlated with organic Chrease activity ratio (r = 0.99***) and reciprocal of clay content (r = 0.97**) of the virgin soils. In stepwise multiple regression analysis, aggregation index (for kc values) or exchangeable sodium percentage (for kw) and organic C/urease activity ratio of soils were significantly associated with the overall rate of loss of organic C. It was inferred, therefore, that the relative inaccessibility and protection of organic matter against microbial and enzymic attack resulted in reduced organic C loss. Losses of organic C from the deeper layers (0-0.2 m, 0-0.3 m) were observed in Waco, Langlands-Logie, Cecilvale and Riverview soils, although generally rate of loss decreased with depth.

PREDICTION OF CHANGES IN THE COMPOSITION OF NATURALLY FERMENTED AND CHEMICALLY PRESERVED COLOSTRUM DURING STORAGE

1980 ◽  
Vol 60 (3) ◽  
pp. 763-777
Author(s):  
E. ELIZABETH WHEELER ◽  
S. A. IKURIOR ◽  
J. B. STONE ◽  
I. McMILLAN
Keyword(s):  
Titratable Acidity ◽  
Stepwise Multiple Regression ◽  
Nonprotein Nitrogen ◽  
Total Solids ◽  
Ambient Temperatures ◽  
Effects Of Temperature ◽  
Highly Correlated ◽  
Nutrient Changes ◽  
Temperature Time ◽  
Storage Temperatures

Colostrum was treated with Chemstor (C), formic acid (FA) or a mixture (M) each at the 0.50, 0.75 and 1.00% level (vol/vol) ornaturally fermented (NF) and stored for42 days at each of three ambient temperatures (12, 20 and 28 °C). Analyses of pH, titratable acidity, total solids, protein, nonprotein nitrogen (NPN), lactose and fat were performed initially and at 14-day intervals during storage. Observed data were analyzed by stepwise multiple regression to isolate effects of temperature, time and level of preservative and to predict nutrient changes throughout storage. In NF colostrum, the predicted pH and protein decreased and NPN increased at all storage temperatures. An increase in acidity and decreases in total solids, lactose and fat were predicted over time only in NF colostrum stored at high temperatures. The predicted pH remained constant over temperature and time in FA- and M-treated colostrum and was determined exclusively by the level of preservative applied. M-treatment resulted in lower predicted NPN and higher total solids, protein, lactose and fat during storage than C- or FA-treatment. Fewer nutrient losses were predicted in treated than in NF colostrum. Predicted and observed values were highly correlated.

scholarly journals Perbaikan Beberapa Sifat Kimia Tanah Ultisol Dengan Pemberian Bokashi Bungkil Inti Sawit (BIS) Terhadap Pertumbuhan Bibit Kelapa Sawit

2019 ◽  
Vol 1 (2) ◽  
pp. 119 ◽  
Author(s):  
Hema Malini
Keyword(s):  
Plant Height ◽  
Soil Ph ◽  
Block Design ◽  
Palm Kernel ◽  
Stem Diameter ◽  
Plant Weight ◽  
Organic C ◽  
Kernel Meal ◽  
Number Of Leaves ◽  
Palm Kernel Meal

The purpose of this study was to improve some of the chemical properties of Ultisol soil by giving Palm oil bokashi and to determine the effect of the best bokashi doses for the growth of oil palm seedlings.This research was conducted for 6 months starting in June until December 2017. The research location was at Jl. Mount Lingai North Samarinda. The design used was a randomized block design consisting of nine treatments and three replications. The treatment consisted of (P0) 0 g bokashi polybag-1, (P1) 100 g bokashi polybag-1, (P2) 200 g bokashi polybag-1, (P3) 300 g bokashi polybag-1, (P4) 400 g bokashi polybag-1, (P5) 500 g bokashi polybag-1, (P6) 600 g bokashi polybag-1, (P7) 700 g bokashi polybag-1, (P8) 800 g bokashi polybag-1. Soil samples were composited, then analyzed in the laboratory with the parameters of soil pH, organic C, N and C/N ratio. Plant data analyzed were plant height, number of leaves, stem diameter and plant weight. If it is significant then the LSD test will be at the level of 5%. The results showed that bokashi administration could improve soil pH, organic C, N and C/N ratio on Ultisol soil. Giving Bokashi Palm kernel meal obtained a soil pH of 4.57; Organic C 7.48; N 0,420; C/N Ratio of 19.45 in Ultisol soil. The application of Bokashi Palm kernel meal at a dose of 800 g polybag-1 in treatment P8 showed a significant effect on leaf number and plant weight, a very significant effect on plant height and stem diameter. The average plant height is 85.77 cm; average number of leaves 12.67; stem diameter of 4.90 cm; plant weight of 3.07 kg.

scholarly journals Soil macrofauna diversity in andisol after eight years of Mount Sinabung eruption in Sumatra, Indonesia

2021 ◽  
Vol 22 (6) ◽  
Author(s):  
Mariani Sembiring ◽  
HIDAYATULAH MUNAWAROH ◽  
MUKHLIS MUKHLIS ◽  
BENNY HIDAYAT ◽  
TENGKU SABRINA
Keyword(s):  
Soil Moisture ◽  
Soil Temperature ◽  
Soil Ph ◽  
Volcanic Ash ◽  
Soil Surface ◽  
Pitfall Trap ◽  
The Other ◽  
Soil Macrofauna ◽  
Organic C ◽  
Hand Sorting

Abstract. Sembiring M, Munawaroh H, Mukhlis, Hidayat B, Sabrina T. 2021. Soil macrofauna diversity in andisol after eight years of Mount Sinabung eruption in Sumatra, Indonesia. Biodiversitas 22: 3024-3030. The eruption of Mount Sinabung resulted in volcanic ash covering the soil of various thicknesses. That will affect the population and diversity of macrofauna in it. This research aimed to determine the Andisol soil macrofauna in Karo District with various thicknesses of volcanic ash covering from Mount Sinabung. This research was conducted in May 2019. Plots were placed in four locations, Location I: processed land (0 cm), Location II: Land covered by thin ash (?2 cm), Location III: Land covered by medium ash (2-5 cm), Location IV: Land covered by thick ash (?5 cm). Sampling was conducted by using the Pitfall trap, Monolith squared, and Hand sorting methods. The research results indicated that the thicker the volcanic ash covering the soil surface, it would reduce soil moisture, soil water content, organic C, and soil pH, but on the other hand, increase the soil temperature. A total of 20 species were able to live on the Andisols affected by the eruption of Mount Sinabung.

scholarly journals Dinamika P Tersedia, pH, C-Organik dan Serapan P Nilam (Pogostemon cablin Benth.) pada Berbagai Aras Bahan Organik dan Fosfat di Ultisols

2017 ◽  
Vol 14 (3) ◽  
Author(s):  
Any Kusumastuti
Keyword(s):  
Soil Ph ◽  
Block Design ◽  
P Uptake ◽  
Available P ◽  
Organic C ◽  
Randomized Block Design ◽  
Pogostemon Cablin ◽  
Soil Available P ◽  
Two Factors ◽  
The Media

The experiment was conducted at field experiment of Lampung State Polytechnic from June up to November 2012, using complete randomized block design with factorial pattern, which consists of two factors, and three replications. The first factor is organic matter (POME) dosage, consists of three dosages (without POME, 25% POME with 75% soil, and 50% POME with 50% soil). The second factor is dosage of SP-36 Fertilizer (without SP-36, 1.8 g, 3.6 g, and 5.4 g SP-36 per polybag (plant) respectively. The study aims was to determine (1) The dynamics of soil available P, (2) The effect of the best POME dosage for pH, C-organic and P uptake, (3) The effect of the best SP-36 dosage for pH, C-organic and P uptake, (4) The interaction between dosages of POME and SP-36 on pH, C-organic and P uptake of plant. The observation consists of (a) Soil available P, (b) pH and C-organic (c) and P uptake of plant. The data was analysis with variance analysis, furthermore, if the result is significance, was continued with LSD test, but soil available P dynamics was presented in graphic form. The result showed that (a) Applications of POME and SP-36 increase the soil available P, (b) The media with 25% POME and 50% POME were gave the better result on pH, C-organic and P uptake by plant, (c) SP-36 fertilizer fertilizer at various doses has not been any impact on soil pH, organic-C and P uptake of plants (d) There is no interaction between POME and SP-36 fertilizer on soil pH, organic C and P uptake of plants Keywords : P Dynamics, P Uptake of Patchouli, Pogostemon cablin, ultisols

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