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In the case of any two of the following describe a laboratory or field method: (a) To show the effect of magnesium deficiency on the growth of a plant - Leaving Cert Agricultural Science - Question 4 - 2016
Question 4
In the case of any two of the following describe a laboratory or field method: (a) To show the effect of magnesium deficiency on the growth of a plant. (b) To esti... show full transcript
Worked Solution & Example Answer:In the case of any two of the following describe a laboratory or field method: (a) To show the effect of magnesium deficiency on the growth of a plant - Leaving Cert Agricultural Science - Question 4 - 2016
Step 1
To show the effect of magnesium deficiency on the growth of a plant.
Answer
To investigate the effect of magnesium deficiency on the growth of a plant, you can set up an experiment with seeds or seedlings. Use two groups: one group should be grown in nutrient-rich soil containing sufficient magnesium, and the other in soil deficient in magnesium. Ensure that both groups are kept under identical conditions (e.g., light, temperature, and humidity).
Over a specific period, measure the growth of the plants by comparing their height and overall health. Additionally, observe any symptoms of magnesium deficiency, such as chlorosis (yellowing of leaves). By documenting growth rates and any visual differences, you can assess the impact of magnesium deficiency.
Step 2
To estimate the yield of a named root crop.
Answer
To estimate the yield of a named root crop, select a specific crop, such as carrots. Set up a measured area, for example, a quadrat measuring 1 m². Plant the seeds at random in this area, ensuring proper care and conditions for growth.
At harvest time, count the number of roots produced and weigh the total yield. To obtain the yield per hectare, repeat this process multiple times, recording your results. Average the results and multiply by 10,000 (the number of square meters in a hectare) to estimate the total yield.