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Advantages and disadvantages of fertiliser.

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Introduction

Advantages * Chemical fertilizer can be made much faster unlike the natural fertilizer * It has much more NPK, usually around 20 to 60 percent, natural fertilizer usually only has a max. of about 14 percent * If it is made according to the soil that it will be used on, it will do nothing but grow a healthy plant Disadvantages * Puts acid in the soil * Strengthens pesticides(they become stronger and more resistant to chemicals that should keep them away) * Other than NPK it contains inert filler and maybe some unnecessary chemicals * It has very little carbon which is a key element in plants * It has no energy, so it can only help the plant when there is enough organic matter around from where it can get the energy, otherwise it burns the roots and destroys the plant * Chemical fertilizer also get a lot of water out of the soil which it contaminated and therefore pollute water * It degrades ecosystems * It releases a green house gas called nitrous oxide So in total, chemical fertilizer is worse than natural fertilizer this site below helped me a lot, also for pros and cons about natural fertilizers So what is the advantages and disadvantages of fertilizers ? Most plants, especially modern varieties, will pull more fertilizer molecules out of the ground than what is naturally re supplied. ...read more.

Middle

the plant require, how much to add, and when to add it. It also needs to be watered in to avoid that the plant dies from thirst (plants which grow in fertilizer rich soil without water will cause water to exit the plants and kill them) This could also lead from tests in labs to complaints of faulty products. If this is true then there could be that a farmer comes along and that he lives in an area were there is a lot of rain. The thing is your fertilizer doesn't work in rain at all because it is only designed for the light. So you have to do the half the product again so it works at it's best for both products. There could also be a problem with miss calculations with the amounts of nutrients needed. You could also have the problem with people trying to copy your product so what you do is that you put a patent on it making you perfectly sure that your idea won't be stolen. When planted in the ground, the roots of a plant will take up water and in the water you will also find dissolved molecules of fertilizer. These molecules are used as building blocks to create plant tissue, flowers, fruits, and even foodstuffs for the plants themselves. ...read more.

Conclusion

Fertilized plants are generally often also more disease resistant than unfed plants. There really is no disadvantages to fertilizing, and most home owners should fertilize plants such as vegetables, fruits and flowers because these - presumably modern hybrids - tend to consume much more fertilizer than nature can provide.. This also goes for lawns, for example, which has individual grass plants growing very close together - much closer than grass plants would in nature - and therefore have to compete with each other for nutrients. However, if you give TOO MUCH fertilizer the plants can suffer just as they would if they get too little. For example, both magnesium and calcium molecules are needed by the plants, but given too much calcium, for example, can interfere with the plants ability to take up magnesium and the other way around, too. If you add fertilizer to certain plants when the soil is dry or the temperature is very hot, you also risk damaging the plants. While there are no specific disadvantages to fertilizing if doing it correctly, you do need to know approximately which type of fertilizer (which nutrients) the plant require, how much to add, and when to add it. It also needs to be watered in to avoid that the plant dies from thirst (plants which grow in fertilizer rich soil without water will cause water to exit the plants and kill them) There could again say why use fertilizer when you already have dung. ...read more.

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Here's what a teacher thought of this essay


** An account of the use of fertilizers which unfortunately contains many scientific inaccuracies. The candidate needs to understand that fertilizers are not plant 'food' before they start to discuss the advantages and disadvantages of fertilizer use.
To improve
The article needs a title and an introductory paragraph to explain the focus of the piece. It is not clear whether the writer is trying to compare inorganic and organic fertilizers or is just trying to discuss the use of chemical fertilizers.
The candidate needs to improve their understanding of how plants obtain their food and nutrients. There are many sentences that imply that fertilizers supply food to the plant rather than essential nutrients needed to convert sugars into amino acids.
A thorough proof reading of the piece would have prevented several pages of repeated pasted text.
The writer implies references have been used but these are not cited .

Marked by teacher Stevie Fleming 15/10/2013

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