> English > Climate Encyclopaedia > Food and Climate > basics > 1. Plants and climate > * Worksheet 1
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Experiments on crop yields
Have a look in Basics - Plants and climate - Plants and the environment and see how high temperatures and water logged soils affect the growth of important crops. ExperimentTry this simple experiment and see just how important water, warmth, and light are to the growth of plants.
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What you need:- 1 pack of cress seeds
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Sowing:- Mark the plastic boxes 1, 2 and 3. - Cut the filter paper to fit. - Sow the cress seeds in each box.
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Box No. 1: Keep the filter paper wet and place the box near a south facing window. Box No. 2: Place the box near a south facing window but don't water it Box No. 3: Keep the filter paper wet and store the box in a dark cupboard.
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Once the seeds have germinated (this will take several days) measure the height of the cress at the same time everyday using a ruler. Record the results in the table below. Keep an eye on what happens in the boxes and don't forget to water boxes 1 and 3 once a day.
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...And if you want a quick experiment:
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What you need:- 3 boxes of water cress from the supermarket - 1 ruler - a set of kitchen scales
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Instructions:- Mark the plastic boxes with the numbers 1, 2 and 3. Box No. 1: Place the box near a south facing window but don't water it. Box No. 2: Water the box regularly and place it near a south facing window. Box No. 3: Make sure the box is wet and then put it in the freezer for 24 hours. Water Box 2 regularly! After 24 hours weigh and measure the cress boxes again. Record the results in the table below.
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About this page:author: Sarah Ancot - University of Nürnberg, Nürnberg, Germany
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