Answer ALL the questions in this section in the spaces provided.
1. Define organic farming (1mark)
2. List THREE soil constituents (1 ½ mark)
3. Give FOUR benefits of crop rotation (1mark)
4. State TWO disadvantages of using hydram pumps in pumping water in the farm(1mark)
5. List FOUR benefits of land consolidation in farming (2marks)
6. Name a crop weed that is:
(i) Parasitic to maize crop (1/2 mark)
(ii)Alternate host for rusts (1/2 mark)
(iii)Aquatic (1/2 mark)
(iv) Has medicinal value (1/2 mark)
7. State THREE ways in which nitrogen is lost from the soil (1½ marks)
8. State FOUR benefits of mulching in soil and water conservation (2marks)
9. Give FOUR disadvantages of using organic manures in crop production (2marks)
10.(i) Define opportunity cost (1mark)
(ii)Name Two types of inventory records kept by farmers (1mark)
11.(a) Give TWO importance of sub-soiling (1mark)
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