scholarly journals Effect of various kinds of phosphorus fertilizers on a peat soil

1958 ◽  
Vol 30 (1) ◽  
pp. 213-222
Author(s):  
Armi Kaila
Keyword(s):  
Surface Layer ◽  
Dry Matter ◽  
Rock Phosphate ◽  
Phosphorus Content ◽  
Peat Soil ◽  
Soft Rock ◽  
Basic Slag ◽  
P Content ◽  
Significant Difference ◽  
Phosphorus Fertilizers

Results are reported from a field trial on acid fen peat soil in which the effects of superphosphate and ground soft rock phosphate were compared as annual surface dressing on an old timothy ley. Until 1948 basic slag was used instead of rock phosphate; since that rock phosphate had been applied for ten years. Owing to the large variation in the results from the replicate plots the differences in the phosphorus conditions between the various treatments were less distinct than could have been expected. The accumulation of phosphorus quite in the surface layer was demonstrated. The hay yield produced by the annual dressing with 100 kg/ha of superphosphate in 1957 was equal to that produced by 130 kg/ha of rock phosphate. Also the yields from the treatments with 200 kg/ha of superphosphate or 260 kg/ha of rock phosphate were equal in size, but a significant difference was found in the phosphorus content of hay. In the superphosphate plots the P-content was about 0.21—0.23 per cent of dry matter, whereas in the rock phosphate plots only 0.14—0.15 per cent P in the dry matter was found.

scholarly journals Phosphorus requirement and partitioning in oat cultivars

2019 ◽  
Vol 49 (2) ◽  
Author(s):  
Jonas Manica ◽  
Pedro Alexandre Varella Escosteguy
Keyword(s):  
Avena Sativa ◽  
Cover Crop ◽  
Dry Matter ◽  
Phosphorus Content ◽  
Nutrient Requirements ◽  
Physiological Maturity ◽  
P Content ◽  
Phosphorus Requirement ◽  
Oat Cultivars ◽  
Dry Matter Weight

ABSTRACT: Maintenance fertilization changes with nutrient requirements and partitioning, but these are not well known for oat cultivars. The aim of this study was to evaluate whether phosphorus (P) requirements and partitioning vary among cultivars of oat (Avena sativa L.). The UPFA ‘Ouro’, UPFPS ‘Farroupilha’, IPR ‘Afrodite’, URS ‘FAPA Slava’, ‘Barbarasul’, ‘FAEM 007’, URS ‘Taura’, and ‘URS 21’ were cultivated in a Latosol with high P content in a greenhouse in 2015. Plants were sampled at physiological maturity and divided into roots, stem, leaves, and grain tissues. Phosphorus content and the dry matter weight of these parts were evaluated and the uptake amount and partitioning of P were estimated. The values of these variables differed across cultivars, except the P content in the grain (‘average’, 4.0g P kg-1). ‘Afrodite’ and ‘FAPA Slava’ have lower requirements and partitioning of P in the grain, but these did not vary among the other cultivars. Requirements and partitioning of P in stem and leaves increased in the following order: ‘Ouro’ and ‘Farroupilha’<‘Taura’ and ‘FAPA Slava’<‘URS 21’<‘Afrodite’, ‘Barbarasul’ and ‘FAEM 007’. Requirement and partitioning of P in roots, stem, leaves, and grain differs across cultivars, which indicates that this factor, besides how the oat is used (such as for grain, pasture, silage, cover crop), can be used to improve maintenance fertilization.

scholarly journals PENGARUH DOSIS INOKULUM AZOLLA DAN PUPUK FOSFAT ALAM TERHADAP KETERSEDIAAN P DAN HASIL PADI DI ALFISOL

2014 ◽  
Vol 29 (2) ◽  
pp. 106
Author(s):  
Canggih Jati Nusantara ◽  
Sumarno Sumarno ◽  
Widyatmani Sih Dewi ◽  
Sudadi Sudadi
Keyword(s):  
Rock Phosphate ◽  
Phosphorus Content ◽  
Rice Yield ◽  
Phosphate Fertilizer ◽  
Fertilizer N ◽  
Total N ◽  
Natural Phosphate ◽  
Significant Difference ◽  
Comparative Treatment ◽  
Difference Effect

<p>Rice production in Indonesia can not cover the national needs. The low productivity caused by the decline in soil fertility. One way to increase the phosphorus content in the soil is to provide natural phosphate fertilizer and Azolla inoculum. This study was conducted to determine the proper dose of Azolla inoculum and rock phosphate to increase the availability of phosphate and increase the yield of rice plants on land Alfisol. This study uses the two-factor factorial CRD comparative treatment of manure and fertilizer N, P, K. Analysis of the observed data using analysis of variance at 5% level and if there is a significant difference effect followed by DMRT 5% level to compare between treatments. The results showed that treatment of Azolla inoculum and phosphate can increase the availability of phosphate in the Alfisol soil and can increase rice yield. On the parameters available P showed the highest results in the treatment of Azolla 2.5 tons / ha without natural phosphate and Azolla 5 tons / ha of natural phosphate 350 kg / ha which is 10.81 ppm. In addition, administration of Azolla inoculum and phosphate levels give rise to CEC, organic matter, total N in the soil and soil pH.</p>

scholarly journals Effect on a peat soil of application of superphosphate at various rates

1959 ◽  
Vol 31 (1) ◽  
pp. 120-130
Author(s):  
Armi Kaila
Keyword(s):  
Total Phosphorus ◽  
Dry Matter ◽  
Phosphorus Content ◽  
Organic Phosphorus ◽  
Peat Soil ◽  
Available Phosphorus ◽  
Untreated Soil ◽  
Total Phosphorus Content ◽  
Low Phosphorus ◽  
Better Than

The effect on a fen soil of superphosphate applied for 34 years at the annual rates of 0, 100, 200, and 300 kg/ha was studied. The material consisted of samples from a field trial at the Leteensuo Experiment Station. The soil samples from the ploughing layer were collected in autumn 1956, and the hay samples from the crop harvested in 1957. The hay yields from the treatments with 200 or 300 kg/ha of superphosphate were about 7400 kg/ha, and the phosphorus content of the hay 1.69 and 1.85 per cent, respectively. The treatment with 100 kg/ha of superphosphate yielded only about 5100 kg/ha of hay dry matter with a very low phosphorus content, 0.96 per cent. The yield from the untreated plots was almost negligible. Also the biological and chemical soil tests showed that the untreated soil was almost depleted of available phosphorus. The phosphorus conditions in the soil annually treated with 100 kg/ha of superphosphate were not significantly better than in the untreated soil. An annual anplication of 200kg/ha of superphosphate was able to maintain a more satisfactory rate of available phosphorus in the soil, but only the treatment with 300 kg/ha of superphosphate resulted in markedly higher test values than those for the lower treatments. The total phosphorus content of the soil was the higher the larger the amount of superphosphate applied. About 40 to 50 per cent of the differences between the total phosphorus content of the treated and untreated samples was due to organic phosphorus. The potassium content of the hay was the lower the higher the superphosphate treatment. The hay from the treatment with 300 kg/ha of superphosphate contained only 1.25 per cent potassium. The possibility that potassium was a minimum factor in this treatment was discussed.

scholarly journals Effect of Phosphorus Solubilizing Bacteria on Soil Available Phosphorus and Growth and Yield of Sugarcane

2021 ◽  
Vol 18 (12) ◽  
Author(s):  
Pyone Pyone AYE ◽  
Pechrada PINJAI ◽  
Saowanuch TAWORNPRUEK
Keyword(s):  
Rock Phosphate ◽  
Phosphorus Content ◽  
Ammonium Phosphate ◽  
Phosphorus Fractions ◽  
Growth And Yield ◽  
Cane Yield ◽  
Available Phosphorus ◽  
Phosphorus Fertilizer ◽  
Soil Available Phosphorus ◽  
Phosphorus Fertilizers

Phosphorus solubilizing bacteria (PSB) can increase soil phosphorus (P) availability and improve plant growth, yield, and phosphorus content of several crops. The experiment was conducted to evaluate the effect of PSB on soil available phosphorus, growth, and yield of sugarcane at field conditions. Kosakonia radicincitans (PSB1) and Bacillus subtilis (PSB2) were applied with two different sources of phosphorus fertilizers: Di-ammonium phosphate (DAP) and rock phosphate (RP). The application of PSB with phosphorus fertilizers enhanced the yield from 17.03 to 38.42 % over no application of fertilizer. It also increased the percentage of commercial cane sugar percent (CCS %) from 4.8 to 19.96 % over control. The application of PSB2 with DAP showed effective results in available phosphorus content in the soil and yield of sugarcane. The PSB population and the available phosphorus contents were higher in treatments when phosphorus was given partly through RP and DAP than the control. The application of phosphorus fertilizer and PSB increased phosphorus fractions in the soil. The addition of phosphorus fertilizer to soil increased all the inorganic phosphorus fractions in soil. The treatments with PSB resulted in statistical differences in total phosphorus concentrations in the soil. The application of PSB with RP (T6, T7, and T8) showed the highest weight among the treatment at the harvesting time. The yield of sugarcane was highest in the application of PSB2 with either DAP or RP (T4 and T7). HIGHLIGHTS Evaluate the effect of Phosphate Solubilizing Bacteria (PSB) (Kosakonia radicincitans and Bacillus subtills) comminated with two different phosphorus (di-ammonium phosphate (DAP) and rock phosphate (RP) fertilizers on the changes in the soil available phosphorus level and sugarcane growth at Sa Kaeo Province, Thailand The application of P fertilizer and PSB can increase the inorganic P fractions in the soil and increased the cane yield over NPK without PSB The PSB application either single or co-inoculation of PSBs increased the average cane more than 13 % to over control

scholarly journals Effect Of Age And Wholesale Cuts On The Quality Of Indigenous Sheep Carcass

1970 ◽  
Vol 37 (1) ◽  
pp. 32-38
Author(s):  
MA Hamid ◽  
S Akhter ◽  
SME Rahman ◽  
M Khan
Keyword(s):  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Phosphorus Content ◽  
Coliform Bacteria ◽  
Meat Sample ◽  
Ether Extract ◽  
Significant Difference ◽  
Total Bacteria

The study was conducted to investigate the nutritive value and microbial status of different wholesale cuts of sheep carcass. The meat sample was obtained from 3 sheep. The ages of sheep were approximately of 1, 2 and 3 years. The wholesale cuts were shoulder, rack, loin and leg of each sheep carcass. The pH, juiciness, chemical composition, total bacteria, coliform bacteria, yeast and mould were studied to assess the quality of meat. The range of pH value were 5.077 - 5.927. The value of juiciness was decreased with the age. The value of dry matter, ash, crude protein, ether extract, calcium and phosphorus content of all samples were ranged from 23.32-30.40%, 0.88-1.027%, 20.50-24.88%, 8.10-12.13%, 0.012-0.038% and 0.048-0.185% respectively. Statistical analysis indicated that the value of pH, juiciness, dry matter, crude protein, ether extract, calcium, phosphorus and yeast (log value) was highly significant (P< 0.01) due to age and cut. Chemical composition, such as dry matter, ash, ether extract and calcium of all the samples increased gradually with the age, except crude protein, which decreased gradually with the age. The phosphorus content of the sample did not differ significantly due to age and cuts. The value of ash content was less significant (P<0.05) due to different cuts but highly significant (P<0.01) due to age. The range of total bacteria and coliform bacteria was 4.210-4.787 and 2.38-3.637/g of sample respectively. The range of yeast was 1.297-2.777/g of sample. Different meat cuts and ages did not show significant difference on total bacteria and coliform bacteria but in case of yeast, the value was highly significant (P<0.01) for the ages and cuts. Nutrient content of mutton varies due to different wholesale cuts as well as age. DOI: http://dx.doi.org/10.3329/bjas.v37i1.9865 BJAS 2008; 37(1): 32-38

Effectiveness of topdressed and incorporated superphosphate and Duchess rock phosphate for subterranean clover on sandy soils near Esperance Western Australia

1987 ◽  
Vol 27 (1) ◽  
pp. 87 ◽  
Author(s):  
MDA Bolland
Keyword(s):  
Sandy Soil ◽  
Dry Matter ◽  
Rock Phosphate ◽  
Phosphorus Content ◽  
Sandy Soils ◽  
Subterranean Clover ◽  
Soil Surface ◽  
The Other ◽  
Deep Yellow ◽  
Phosphate Incorporation

In 2 experiments on sandy soil near Esperance, W. A., superphosphate and Duchess (Queensland) apatite rock phosphate were either left on the soil surface after application (topdressed) or incorporated into the top 10 cm of the soil with a rotary hoe (incorporated). One experiment was on Fleming gravelly sand which had a greater capacity to adsorb phosphorus than did the deep yellow sand (Gibson sand) used in the other experiment. Dry matter or seed yield of subterranean clover and phosphorus content of dry herbage or seed were used as indicators of the effectiveness of the phosphorus treatments. Compared with topdressed superphosphate, incorporation of superphosphate did not greatly influence its effectiveness on the Gibson soil, but reduced its effectiveness by about 20% on the Fleming soil. Relative to topdressed rock phosphate, incorporation of rock phosphate almost doubled its effectiveness on the Fleming soil, and improved its effectiveness by about 1.5 times on the Gibson soil. Superphosphate was the more effective fertiliser. Relative to topdressed superphosphate, the effectiveness of topdressed and incorporated Duchess rock phosphate, respectively, was about 15 and 30% on the Fleming soil, and about 25 and 40% on the Gibson soil. There was no evidence of any leaching of phosphorus from Duchess rock phosphate from the 0-10 cm layer of either soil, nor of superphosphate on the Fleming soil. However, on the Gibson soil, there was some leaching of superphosphate to below 10cm, but not below 20 cm.

Efficiency with which yellow serradella and subterranean clover use superphosphate on a deep sandy soil near Esperance, Western Australia

1986 ◽  
Vol 26 (6) ◽  
pp. 675 ◽  
Author(s):  
MDA Bolland
Keyword(s):  
Linear Relationship ◽  
Sandy Soil ◽  
Dry Matter ◽  
Growth Stage ◽  
Phosphorus Content ◽  
Seedling Emergence ◽  
Subterranean Clover ◽  
Matter Production ◽  
P Content ◽  
The Relationship

In 1984, the efficiency with which an early- and a late-flowering yellow serradella (cv. Pitman and strain DP4 respectively) and a subterranean clover (cv. Seaton Park) utilise phosphorus (P) from superphosphate was compared on a deep sandy soil near Esperance, W.A. Phosphorus applications ranged from 0 to 90 kg/ha P. For each legume there was an approximately linear relationship between the amount of P applied and either the yield of dry herbage and seed, or the P content of dry herbage. The efficiency with which each legume utilised applied P (kg/ha) was determined by calculating the slope of the relationships between dry matter production, or phosphorus content of this dry matter, and the amount of phosphorus applied; this varied according to the growth stage at which the legumes were sampled. Strain DP4 utilised P more efficiently to produce dry herbage, and Seaton Park to produce seed. Pitman was the least efficient at utilising P for dry herbage production in September, and Seaton Park in early October. For dry herbage production in September and early October, the relationship between yield and P content was similar for all 3 legumes, and yield depended on the amount of P present in the herbage. For each legume, the rate of phosphorus applied had no effect on seedling emergence, the period between sowing and commencement of flowering, senescence or the weight per seed.

scholarly journals Methods of optimizing the phosphate regime of drained peat soils in the northern trans-Urals

2019 ◽  
Vol 135 ◽  
pp. 01003 ◽  
Author(s):  
Anatoly Iglovikov ◽  
Alexander Motorin
Keyword(s):  
Main Part ◽  
Phosphorus Content ◽  
Peat Soil ◽  
Ural Region ◽  
Forest Steppe ◽  
Summer Period ◽  
Peat Soils ◽  
Mobile Phosphorus ◽  
Phosphorus Fertilizers

The paper presents the results of long-term research to determine the content of phosphorus in drained peat soils and the influence of agro-meliorative techniques on its dynamics. The objects of research were medium-power peat soils on the typical genesis for subtaiga (Yernyakul bog located on the watershed of Tobol and Vagai rivers; Usalskoe bog – on the second floodplain terrace of Tobol river) and forest steppe (Tarmanskoe bog, Reshetnikovo object located on the second floodplain terrace of Tura river) of Northern Trans-Ural region. It has been revealed that the gross phosphorus content in drained peat soils is 0.1–0.3 %. The main part (83.8–95.2 %) of phosphorus in peat soil is in the form of organic compounds. The ratio of mobile phosphorus to its gross content corresponds to 4.8–16.2 %. The mobility of phosphorus during the 40-summer period increases insignificantly and only in the arable layer. The increase in the content of phosphorus is achieved by the use of phosphorus fertilizers and, to a lesser extent, the strengthening of the processes of mineralization of peat. Poor mobility and good availability of phosphorus plants on peat soils allows to put it in stock for 5 years.

scholarly journals Response of ley plants to rock phosphate and superphosphate

1960 ◽  
Vol 32 (1) ◽  
pp. 52-61
Author(s):  
Armi Kaila ◽  
Pentti Hänninen
Keyword(s):  
Dry Matter ◽  
Rock Phosphate ◽  
Phosphorus Content ◽  
Red Clover ◽  
Experimental Period ◽  
Fine Sand ◽  
Field Trials ◽  
Inorganic Phosphorus ◽  
Plant Groups ◽  
Fractionation Procedure

The results of two field trials in which the efficiency of superphosphate phosphorus and rock phosphate (Hyperphosphate Reno) phosphorus were compared on a fine sand soil and a humus soil, did not show any differences in the dry matter yields produced by the two fertilizers within the experimental period including the nurse crop and three years of ley. The analyses of the hay yields harvested from the third year red clover-timothy ley, fairly poor in red clover, proved that the phosphorus content of the hay from the hyperphosphate plots was markedly lower than that of the hay from the superphosphate plots. The respective figures were 0.17 and 0.21 per cent P of dry matter, while the phosphorus content of the hay from the untreated plots was 0.15—0.16 per cent. Red clover seemed to be able to synthesize plant material equally rich in phosphorus both when feeding on superphosphate and when feeding on hyperphosphate. On the other hand, the grasses, in these cases mainly timothy, took up far less phosphorus from hyperphosphate than from superphosphate. The differences in the phosphorus content of the respective plant groups were almost exclusively due to differences in their content of inorganic phosphorus, or phosphorus determined as inorganic forms by the simple fractionation procedure employed. No effect of the different phosphate treatments on the content of ash, calcium, potassium, or nitrogen in the ley plants could be detected. The results of the present study corroborate the earlier observation that on a ley, poor in clover, rock phosphate may produce crops too low in phosphorus for the needs of domestic animals. The results also emphasize that it is important not to judge the response to phosphate fertilizers only on the basis of the dry matter yields.

Rock phosphate and superphosphate as sources of phosphorus for subterranean clover on an acid sandy soil

1974 ◽  
Vol 14 (68) ◽  
pp. 358 ◽  
Author(s):  
AM Alston ◽  
KW Chin
Keyword(s):  
Sandy Soil ◽  
Dry Matter ◽  
Rock Phosphate ◽  
Phosphorus Content ◽  
Phosphorus Uptake ◽  
South Australia ◽  
Residual Effect ◽  
Subterranean Clover ◽  
Annual Rainfall ◽  
The Mean

Subterranean clover was grown on an acid sandy soil in a field experiment at Mount Compass, South Australia, where the mean annual rainfall is 837 mm. Rock phosphate and superphosphate were applied at 0 to 66 kg ha-1 P. Dry matter yields and phosphorus uptake by the clover and the phosphorus content of the soil were determined. At given levels of addition of phosphorus, rock phosphate was as effective as superphosphate in increasing dry matter yield and phosphorus uptake by the clover in the year of application. Rock phosphate also increased yield and uptake in subsequent years, but superphosphate had little residual effect. Leaching losses of phosphorus from the top 10 cm of soil during three and a half years were equal to 100 per cent and 80 per cent of that applied in superphosphate at 22 and 66 kg ha-1 P respectively. The corresponding losses where rock phosphate was applied were 80 per cent and 60 per cent. Most of the phosphorus leached from superphosphate was lost within two months of the application.

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