Sentences with phrase «guano phosphate»

This ready and seemingly inexhaustible supply of phosphorus, in the form of guano phosphate (seabird droppings), dramatically increased Australian crop yields, and agricultural productivity following the Second World War.

Not exact matches

While this was happening, a team of Australians who had been working in the struggling guano industry on various islands off North Queensland's coast were being rallied to take over the plant and equipment to get the new phosphate mining industry up and running.

While this was happening, a team of Australians who had been working in the struggling guano industry on various islands off North Queensland's coast were being rallied to take over the plant and equipment to get the new phosphate mining industry up and running.

The product was acid phosphate containing some 16 percent P 2 0 5, to which, in the earlier days were added small quantities of nitrogen carriers, such as guano, slaughterhouse tankage, garbage tankage, fish scrap, and lowanalysis potash salts of foreign origin, to be replaced gradually in subsequent years by the higher grades of nitrogen carriers, ammonium sulfate and sodium nitrate, for years likewise largely of foreign origin, and the more concentrated potash salts.

Scientists have known since the 1920s that organic fertilizers used by farmers to supplement conventional systems — composted animal manure, rock phosphates, fish emulsions, guano, wood ashes, etc. — further contaminate topsoil with varying concentrations of heavy metals.

However, SWFs are not confined to energy resources; Asian funds reinvest general trade surpluses and, believe it or not, one of the earliest funds, in Kiribati, derives its wealth from phosphate - rich deposits of bird guano.