The pot with the water will come last because it has no fertiliser to help it grow which mean there are minerals, which helps it grow.
What might happen if I use?
Twice the amount of dosage - I think it will grow the best crops out of them all because of the high amount of dosage.
Half the amount of dosage- I think it will grow but now as well as the 2* the amount of dosage because it only has half the amount.
Normal amount of dosage- I think it will make the crops grow good but not as good as the 2* because it doesn't have that extra strength.
Water - I think it will grow very little because of no fertiliser being used.
Making it a fair test.
The variables that can be change in my investigation are:
- Soil
- Cup
- Seeds can be change but the crops can be varies.
The varies I will change will be the dosage:
- Cup 1 - double the amount of dose.
- Cup 2 - normal amount of dose.
- Cup 3 - half the amount of dose.
- Cup 4 - water.
The variable I will keep the same will be:
- The amount of dose
- Number of seeds
- Amount of soil
- Cup size
- Amount of light
- Same temperature
Safety
- Protect from frost to make sure the plant won’t damage my plants and to make it not grow properly.
- Use quantities advice on plants, too much excess may damage plants because too much might make the crops dead because high dose might kill or damage the plant or the plants might not grow properly.
- Read the instruction on the manual of the fertiliser before I start because it tells us how much to use and what fertiliser is suitable for that kind of plants.
- Keep away from children cause children might think it some kind of drink, which they might drink, which is very harmful.
apparatus
I will use:
- Seeds
- Measuring cylinder to make it a fair test by measuring how much fertiliser there is to put in into the plant.
- Dose of different strength to see which amount of fertiliser grows the best crops.
- Ruler to measure how much the plant has grown.
Preparing my task
The plant, which I am going to grow, is going to be wheat so I will be growing wheat's.
The stage the plants are going to grow is probably be starting the grew the wheat because I just got 4 weeks of recording the results.
There are 3 cups, which I will be using fertilisers on, and the last one on just water.
The container I will use will be normal plastic drinking cups, which I will put in soil and the seeds in it.
To measure the plant I will use a small ruler to measure the height of the plants. I will not use a big one, which might destroy the plants and soil.
I will record the high of each plant twice a week to see its progress.
I will recorded the measurements as accurate as possible by doing it to a decimal place. I will also make a friend do a separate set of results to make sure that it is accurate as possible and if one of our same plant have different set of results I will do the average measure between the two separate reading.
It is so important to get the set of results so it will be a fair test.
The units I will use is centimetre (cm)
The condition I will store the plants in is in a dry warm place, which is room temperature near the window.
During the growing period I will just put the fertiliser or the water in the pot nothing else to making sure it is a fair test as possible.
Method:
First I will get 4 plastic cups and punch 4 holes on the bottom of the cups. I will then get some soil and try to put the same amount of soil in each cup to make it a fair test.
I will get 4 cups and put 10 seeds in each cup making sure I buried them and then I will put 40ml of dosage in each cups.
Cup1 - double the amount of dosage.
Cup2 - normal amount of dosage.
Cup3 - half the amount of dosage
Cup4 - water.
When I put the dose in all of the cup dose I will get a ruler and measure the height in each cup and record how high the crops have grown. During the weeks ahead I will keep on recording how high the crops are and I will be hoping that my prediction is right.
I will observe and measure the height of the crops in each cup by recording it in a table. I will record all my results twice a week to see the progress the crops are doing. I will do it for 4 week. Then when I have all the result I will do some graph to see how high each crops grow and describe it.
Conclusion
What happened to the crops.
2* the amount of dosage - it grew the last amount of height
Normal amount of dosage - it grew the highest amount of crops.
Half the amount of dosage - it grew the second highest crops.
Water - it grew the third highest crops.
And see separate sheet
Evaluation
The table shows that in average that the normal amount of dose grew the highest crops. It was probley because the dosage was right for that kind of crops. Half the amount of dosage grew the second highest by average it was probably because it was a mixture of fertiliser and water which both mixed together had good minerals combined together. The water cup came third probably because it had some good minerals in water but 2* the amount of dosage came last probably because it had to high amount of dosage which the plant might can’t take in.
I made it a fair test as possible but I made the test a bit unfair as well because when it was left in the tray on the window, some pots have more sunlight then others. Which might make some crops grow higher but then in the other hand I think it just grow towards the sunlight with out making the plant grow higher.
If I could change something to make the test better I would make sure that all of the plants have a fair equal amount of sunlight which might make it all grow at it’s own pace.
The only difficulties I have doing the experiment was that some of the plants where buried under the soil which made it hard to measure the plant properly. So to deal with that problem I just try to measure the plant as low as possible avoiding braking the plant and messing the soil up.
The other problem was that when I water the plant most of the fertiliser it still at the top (not absorbing) which might drown the plants but 10 minutes later it starts soaking.
Comparing my predictions.
By my set of results it shows that a pot2 (the normal amount of dosage) grew the best crops by average and my prediction was wrong it grew the lowest amount of crops. I think the double amount of dosage was too high for the plants take in so it couldn’t grew properly. But cup2 the normal amount of dosage was the right amount of minerals a plant need for the crops to grow properly.
If I could have done the experiment again I would improve the crops by making more plants grow because the experiment I did never grew all the amount crops it was suppose to do. I buried 6 seeds and half of the cups grew all the amount of crops I was suppose to so if I had to do it again I would make sure that I buried all the seeds properly so the seeds have more soil and area to grew.