artificial fertilizer

At the same time, the range of artificial fertilizers was being improved.

Producing artificial fertilizer is also more costly in energy than this process.

Without artificial fertilizers there would not be enough food to sustain a population of seven billion people.

Artificial fertilizers were in use and the crop yields had increased.

Strawberries suffered lower quality due to disease and the use of artificial fertilizers.

And are you in favour of, for example, using artificial fertilizers on to grow crops?

Controversy has also surrounded the long-term effects of artificial fertilizer on the soil structure.

Modern hay production often relies on artificial fertilizer and herbicides.

In 1970 European farmers as a whole consumed about 17 billion tonnes of artificial fertilizer.

His father was a manufacturer of artificial fertilizer.

Farmers receive grants which allow them to farm the land by traditional methods, without using artificial fertilizers.

The emphasis of his work was on the use of potash as an artificial fertilizer.

The result is a more fragile ecosystem with an increased dependency on pesticides and artificial fertilizers.

Artificial fertilizers have already pushed crop yields to their attainable limit.

And do not bother to point out that genetically modified foods require less artificial fertilizer or pesticide.

Soil from land that has been recently dressed with artificial fertilizer should be similarly avoided, as this too will pollute the water.

The whole site is managed on traditional lines with light pony grazing without the use of artificial fertilizers and herbicides.

If the supply of manure or artificial fertilizer is limited, only the seedbeds are fertilized.

There is too much technology in agriculture, and too many artificial fertilizers that are destroying our soil for the future.

Artificial fertilizer production is now the largest source of human-produced fixed nitrogen in the Earth's ecosystem.

The Hatch Act was driven by farmers' interest in knowing the constituents of early artificial fertilizer.

Growing world population pushes the need for artificial fertilizers or greater incorporation of organic systems within agricultural infrastructure.

The only way plants, including vines, can grow in this "dead" soil, he says, is by the introduction of more chemicals - artificial fertilizers.

Hence Chinese farmers maintain a balance between different species - and generally without the use of heavy machinery or artificial fertilizers.

How many productive farmlands and aquifers has it saved by eliminating the need for artificial fertilizer?