Evaluation of iron pyrites as sulphur fertilizer

1984 ◽  
Vol 5 (3) ◽  
pp. 235-243 ◽  
Author(s):  
KN Tiwari ◽  
BS Dwivedi ◽  
AN Pathak
Keyword(s):  
Sulphur Fertilizer ◽  
Iron Pyrites

Iron pyrites as a sulphur fertilizer

1969 ◽  
Vol 20 (4) ◽  
pp. 697 ◽  
Author(s):  
CL Banath
Keyword(s):  
Particle Size ◽  
Thiobacillus Ferrooxidans ◽  
Trifolium Subterraneum ◽  
Dry Weight ◽  
Sodium Sulphate ◽  
Special Treatment ◽  
Similar Degree ◽  
Mean Particle Size ◽  
Sulphur Fertilizer ◽  
Iron Pyrites

Iron pyrites (FeS2), without any special treatment other than grinding, was found to be highly effective as a sulphur fertilizer for Trifolium subterraneum L. The dry weights of tops of plants fertilized with iron pyrites at 170 lb/acre (50% by weight of particles < 9 µ in diameter) or at 340 lb/acre (14% < 9 µ in diameter) were more than three times those of plants which did not receive applied sulphur (P < 0.001), and were similar to those of plants receiving 40 lb sulphur per acre (sulphur sufficiency) as either sodium sulphate or sublimed sulphur. The smallest mean particle size used (65% < 9 µ in diameter) did not produce any further increases in dry weights. Iron pyrites at very high rates of application (1360 and 680 lb/acre) of the smallest mean particle size were not toxic to the plants. Small quantities of sublimed sulphur applied with the iron pyrites did not increase the dry weight responses to the iron pyrites. Sterilization of the iron pyrites, or inoculation of sterilized iron pyrites with either an American or a Tasmanian culture of iron-oxidizing bacteria similar to Thiobacillus ferrooxidans, had no effect on the dry weight responses. No indications were found that the presence of phosphate ions decreased the dry weight responses to iron pyrites. It is suggested that in warmer humid climates, smaller applications or larger mean particle sizes of iron pyrites might suffice to alleviate a similar degree of sulphur deficiency.

Iron pyrites as a sulphur fertilizer in an alkaline soil

1976 ◽  
Vol 16 (80) ◽  
pp. 376 ◽  
Author(s):  
CL Banath ◽  
JF Holland
Keyword(s):  
Zea Mays ◽  
Clay Soil ◽  
Sodium Sulphate ◽  
Alkaline Soil ◽  
Incubation Experiment ◽  
Total Sulphur ◽  
Sulphur Concentration ◽  
Sulphur Fertilizer ◽  
Glasshouse Experiment ◽  
Iron Pyrites

Iron pyrites at two levels of grinding (14 and 50 per cent < 9 pm) each at three rates of application (190, 380 and 760 kg ha-l) was applied to maize (Zea mays) in an alkaline soil, in a glasshouse experiment. Every iron pyrites treatment significantly increased the dry weights of whole tops and of cobs over the no sulphur control. The two highest rates of the finer material produced yields of whole tops and of cobs, and total sulphur concentrations and quantities in the tops, similar to those in treatments receiving 45 kg sulphur ha-1 (sulphur sufficiency) either as sodium sulphate or sublimed sulphur. The highest rate of the coarser material produced highly significant positive responses in each of these four measures. The critical sulphur concentration in standard indicator leaves (0.13 per cent) was surpassed in treatments receiving the highest rate of the coarser material and the two highest rates of the finer material. In an incubation experiment, iron pyrites was mixed with the alkaline clay soil and kept at 25�C for 20 days. After allowance for oxidation of the iron pyrites incubated dry without soil, the net oxidation of the sulphide sulphur to sulphate in this soil was 0.98 and 2.39 per cent (both figures highly significant) for the coarser and finer material respectively.

Iron pyrites as sulphur fertilizer for legumes

1985 ◽  
Vol 86 (2) ◽  
pp. 295-298 ◽  
Author(s):  
K. N. Tiwari ◽  
B. S. Dwivedi ◽  
A. N. Pathak
Keyword(s):  
Sulphur Fertilizer ◽  
Iron Pyrites

Iron Pyrites in the Dickinson Mine

1995 ◽  
Vol 4 (1) ◽  
pp. 108-117
Author(s):  
Lewis Turco
Keyword(s):  
Iron Pyrites

Note on cobaltiferous Mispickel from Sulitjelma, Norway

1904 ◽  
Vol 14 (63) ◽  
pp. 54-55 ◽  
Author(s):  
Mark Fletcher
Keyword(s):  
Chemical Analysis ◽  
Specific Gravity ◽  
Naked Eye ◽  
White Colour ◽  
Iron Pyrites

Some months ago Professor Henry Louis presented to this college several isolated crystals which he had brought from the Sulitjelma (or Sulitelma) mines in Arctic Norway: they occur there in masses of copper-pyrites and iron-pyrites, for which this district has been famed for some years.The crystals are of various sizes, ranging in length from 4 to 8 mm. They have a metallic lustre and silver-white colour. The fracture is uneven, and no cleavage is visible. On a freshly broken surface small yellow particles can be seen with the naked eye; these also have a metallic lustre, and are probably iron-pyrites, a probability which is strengthened by the appended chemical analysis. The specific gravity varies from 5.94 to 6.02, and the hardness is just under 5. The crystals are all of a pronounced rhombic aspect.

scholarly journals Managment of sulphur fertilizer in forage sorghum crop cultivated in eutrophic Cambisol with alkaline pH

2019 ◽  
pp. 1258-1266 ◽  
Author(s):  
Thiago Henrique Ferreira Matos Castañon ◽  
Boanerges Freire de Aquino ◽  
Edna Maria Bonfim Silva ◽  
Izabel Maria Almeida Lima ◽  
Ana Paula Alves Barreto Damasceno
Keyword(s):  
Elemental Sulfur ◽  
Chemical Properties ◽  
Dry Mass ◽  
Alkaline Ph ◽  
Single Superphosphate ◽  
Soil Fertilization ◽  
Forage Sorghum ◽  
Randomized Design ◽  
Sulphur Fertilizer ◽  
Completely Randomized Design

The objective of this study was to analyze the effect of soil fertilization with sulfur-based fertilizers, sulfate and elemental sulfur forms on biomass production, nutrient characteristics of sorghum and soil chemical properties. The experiment was carried out in a 4 x 4 factorial scheme (four sulfur sources: single superphosphate, agricultural gypsum, elemental sulfur powder and elemental sulfur granulated with bentonite, and four sulfur doses: 0, 40, 80, 120 mgdm-3) using four replications in a completely randomized design, being cultivated in pots under greenhouse conditions. The sorghum was cultivated for a period of 51 days after emergence of the seedlings. The shoot dry mass, shoot macronutrients content, root and soil and pH of the soil were evaluated. There were interactions between sources and sulfur doses in the variables such as shoot dry mass, sulfur in the root, sulfur and calcium in the soil. Elemental sulfur (granulate) showed lower concentrations of phosphorus, sulfur and N:S ratio in the shoot. The concentrations of potassium, calcium and magnesium did not show significant differences, both for the shoot and the root. The pH of the soil was reduced depending on the sources and doses of elemental sulfur. The sources and doses of sulfur did not influence the levels of phosphorus, potassium, and magnesium in the soil. The elemental sulfur in the form of powder is the best source of sulfur for forage sorghum cultivated in soil with alkaline pH.

scholarly journals Iron Pyrites

Nature ◽  
1875 ◽  
Vol 11 (276) ◽  
pp. 285-285
Author(s):  
R.
Keyword(s):  
Iron Pyrites
Sign in / Sign up

Export Citation Format

Share Document