IGCSEEnvironmental ManagementCambridge (CIE)Exam QuestionsLandFood Production & Crop Yield

Food Production & Crop Yield (Cambridge (CIE) IGCSE Environmental Management): Exam Questions

Exam code: 0680

6 mins2 questions
1
2 marks

The scientist investigates the effect of three different fertilisers on the crop yield of maize plants.

Table 3.1 shows the results of the investigation.

fertiliser used

formula for ion

days until harvest

crop yield / thousand kg per Ha

nitrate

..........

94

31

phosphate

..........

98

28

potassium

K⁺

95

25

control

96

18

Complete Table 3.1.

How did you do?

2
4 marks

Figure 3.2 shows plants surrounded by a layer of mulch.

Photograph showing rows of young green crops growing through a thick layer of dry straw and plant stems covering the soil across a large field, illustrating organic mulch around the plants.
Figure 3.2 Volker Prasuhn, CC BY-SA 3.0, via Wikimedia Commons

Describe four ways that mulch increases crop yield.

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