superphosphate

By 1871 there were about 80 factories making superphosphate.

In 1872 he patented a new type of highly concentrated superphosphate.

Around the early 1960s there was a shortage of wagons for carrying superphosphate.

The front seat was replaced with a hopper to hold superphosphate for aerial topdressing.

Their investigations also produced the "superphosphate", consisting in the acid treatment of phosphate rock.

They advertised spreading superphosphate for £5 per ton, and several orders came from the audience.

Root-prune the wisteria if it didn't bloom this year, and then feed with superphosphate.

Superphosphate is the most commonly used phosphatic fertilizer to promote root activity.

Rototill in organic material, superphosphate and lime if the pH needs to be raised.

Superphosphate is a fertilizer produced by the action of concentrated sulphuric acid on powdered phosphate rock.

The business was established by Edward Packard, one of the first to manufacture superphosphate derived from coprolites, in 1843.

The airline was also used for agricultural purposes, spreading superphosphate, seeding and crop dusting, for example.

Soil quality became increasingly degraded and farmers reverted to excessive superphosphate use to compensate for the loss of nutrients.

Its surroundings are highly phosphatized that superphosphate materials can be mined out on a small-scale basis.

Aerial topdressing is the spreading of fertilisers such as superphosphate over farmland with the use of aircraft.

This mechanism has also been identified as a possible causal agent for take-up of the heavy metal cadmium from superphosphate based fertilizers.

The first research began in 1926; this was in the application of superphosphate its alternatives and the timing of application.

Likewise superphosphate and muriate of potash.

In the 1840s, scientists found that coprolites could be dissolved in sulfuric acid to produce what became known as superphosphate.

In around 1890, the soil in the district was found to be phosphate deficient, so superphosphate was introduced to the pastures.

Many inorganic fertilizers, particularly those based on superphosphate, may not replace trace mineral elements in the soil which become gradually depleted by crops.

Since fluorides occur in superphosphate fertilizers, increasing use of these in agriculture leads to increasing absorption by plants.

The result is hydrated to turn the calcium sulphate into the dihydrate gypsum and sold as superphosphate of lime.

By the start of the 20th century guano had been nearly completely depleted and was eventually overtaken with the discovery of superphosphate.

The 1948 fuel tank was replaced by a hopper with sides angled at 60 with a vibrating rod to loosen the superphosphate.