• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Fertilisers are substances that supply plant nutrients or correct soil fertility

Extracts from this document...

Introduction

´╗┐Fertilisers are substances that supply plant nutrients or correct soil fertility. They are the best way of increasing crop production and of improving the quality of food. Fertilisers are used to supplement nutrients in the soil, especially to correct yield-limiting factors, such as weather, space and water. The main nutrients in fertilisers are nitrogen, phosphorus, and potassium (these are the macro- nutrients) and other nutrients (micro nutrients) are added in smaller amounts. Fertilisers are usually applied to soil, or can be sprayed on leaves. Fertilisers usually provide, in different proportions: 1. Three main macro nutrients: nitrogen (N), phosphorus (P), and potassium (K). ...read more.

Middle

into usable food for plants. A phosphorus deficiency will lead to stunted looking plants that produce a lower quality fruit or flower. Potassium, often called potash, helps plants use water and resist drought. It promotes healthy green plants. It is important to food crops and enhances the size of fruits and vegetables. The macro nutrients are taken in, in larger quantities and are present in plant tissue in amounts from 0.2% to 4.0% . Micro nutrients are consumed in smaller quantities and are present in plant tissue in quantities measured in parts per million (ppm), ranging from 5 to 200 ppm. ...read more.

Conclusion

Inorganic fertilisers are often synthesized using the Haber process, which produces ammonia as the end product. This ammonia is used as a food for other nitrogen fertilizers, such as anhydrous ammonium nitrate and urea. Ammonia nitrate is a common high nitrogen fertiliser. The acid-base reaction of ammonia with nitric acid gives a solution of ammonium nitrate. It is 34.5% nitrogen HNO3(aq) + NH3(g) ? NH4NO3(aq) ammonia + nitric acid? ammonium nitrate. Organic fertilisers are fertiliser compounds that contain one or more kinds of organic matter. The ingredients may be animal or vegetable matter or a combination of the two. Processed organic fertilisers include compost, blood meal, bone meal, humic acid, amino acids, and seaweed extracts and naturally-occurring organic fertilisers include manure, slurry, worm castings, peat, seaweed, humic acid, and guano. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Organic Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Organic Chemistry essays

  1. Marked by a teacher

    Investigating the rate of reaction between magnesium and hydrochloric acid

    3 star(s)

    I feel I have done the experiment a number of times to get trustworthy results and used equipment that were easy to handle which means that I could do the experiments without any major errors or difficulty. Also my result match my line of best fit, which makes my confidence in reliability stronger.

  2. Peer reviewed

    Should food additives be banned

    3 star(s)

    Health risks of food colourings All additives in the UK and Europe are controlled by law, and can only be used following stringent tests and approval by an independent committee of scientists and medical experts. However, some scientists have linked additives - particularly tartrazine or E102 - to hyperactivity in children, allergies, asthma, migraines and even cancer.

  1. Should we produce more artificial fertilizers to produce more food?

    This is because artificial fertilizers can be directly taken up by plants without biological processes of microorganisms in the soil. Essentially, use of artificial fertilizers enhances the efficiency of agriculture and the productivity (crop yield) in comparatively comfortable and precise way rather than organic fertilizers.

  2. In this report the effects of fire and explosion are examined based on quantitative ...

    luminous, formation of blue cone, and either lift off or flashback down the burner tube. The height of the blue cone was also measured if it was visible at each reading. The test was repeated several times for varying sizes of burner tube, of which the internal diameter was measures using a micrometer.

  1. The Green House effect.

    Certain fuels contain impurities, which can cause pollution such as smog and acid rain whereas pure hydrocarbons produce no residue if the combustion is complete. When combustion occurs oxides of nitrogen and sulphur are released and dissolve in water in the atmosphere to make acid rain.

  2. GCSE Chemistry Revision Notes - everything!

    This is an example of thermal decomposition. Copper (II) oxide is a base; it reacts with acids to form salts. Blue copper (II) sulphate solution reacts with alkalis to form copper (II) hydroxide. When it reacts with ammonia solution the deep blue complex ion, [Cu (H20)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work