KCSE Agriculture Paper 1 (443/1) is a 2-hour paper worth 90 marks. Section A has short questions worth 30 marks, Section B has a few structured or diagram questions worth 20 marks, and Section C asks you to answer 2 of 3 essay questions worth 20 marks each. Paper 1 covers crop production, soil fertility, farm tools, agricultural economics and land use. Below are original practice questions in that style, with marking-scheme style answers so you can see how many points each mark needs.
Original CBC Guides questions in the KCSE format, not an official KNEC paper. Confirm your paper date on the timetable your school issued.
Section A: Short Answers
1. State four ways in which organic matter improves soil. (2 marks)
Answer (any four, ½ mark each): improves soil structure and aeration; increases water-holding capacity; releases nutrients as it decomposes; buffers soil pH; provides food for soil micro-organisms; increases cation exchange capacity, so nutrients are not easily leached.
2. Give two reasons for hardening off seedlings before transplanting. (1 mark)
Answer: it prepares seedlings for harsher field conditions such as direct sun and less water; it reduces transplanting shock, so more seedlings survive.
3. Name four methods of controlling soil erosion that are biological rather than physical. (2 marks)
Answer: cover cropping; mulching; grass strips; agroforestry or planting trees; strip cropping; contour farming with crops; afforestation.
4. Calculate the amount of CAN (21% N) needed to supply 60 kg of nitrogen per hectare to a 2-hectare maize field. (2 marks)
Working: CAN per hectare = 60 × 100 ÷ 21 = 285.7 kg. For 2 hectares: 285.7 × 2 = 571.4 kg (about 11.4 bags of 50 kg). Examiners award the method mark for 100/21 even if the arithmetic slips, so always write it.
5. State two differences between a land lease and land consolidation. (2 marks)
Answer: a lease gives temporary use of land for a fixed period in exchange for rent, while consolidation permanently combines a farmer’s scattered fragments into one holding; a lease does not change ownership, while consolidation involves government-led reallocation and new title deeds.
Section B: Structured Question
6. Farm records (5 marks)
Mr Otieno kept the following for his dairy unit in March: milk sales KSh 64,000; dairy meal KSh 18,500; veterinary costs KSh 3,200; labour KSh 12,000; heifer calf sold KSh 15,000. (a) Calculate his gross margin, treating labour as a fixed cost. (b) State two uses of farm records.
Working: Gross output = 64,000 + 15,000 = 79,000. Variable costs = 18,500 + 3,200 = 21,700. Gross margin = KSh 57,300. Labour is fixed here so it is not subtracted. (b) Any two: show whether the farm is making a profit or loss; help plan and budget; support a loan application; help in tax assessment; settle disputes when the farm is shared or inherited.
Section C: Essay
7. Describe the production of dry beans under the following headings: land preparation, planting, field management and harvesting. (20 marks)
Land preparation (4 marks): clear the land and plough early, before the rains; harrow to a medium tilth because bean seeds are medium-sized; remove perennial weeds such as couch grass; incorporate well-decomposed manure.
Planting (6 marks): use certified seed of a recommended variety such as Rosecoco or Mwitemania; plant at the onset of the long rains; spacing of about 45–50 cm between rows and 10–15 cm within the row, or 2 seeds per hole at 30 cm; plant 3–5 cm deep; apply DAP or TSP in the planting hole and mix with soil to avoid scorching the seed. Do not use nitrogen top-dressing heavily, since beans fix nitrogen with Rhizobium bacteria; seed can be inoculated where beans have not grown before.
Field management (6 marks): weed early, twice before flowering, and avoid weeding during flowering or when leaves are wet to limit flower drop and spread of disease; control bean fly with seed dressing; control aphids with a recommended insecticide; control anthracnose and halo blight by using clean seed and crop rotation; rogue diseased plants.
Harvesting (4 marks): harvest when most pods have turned yellow and dry, about 3 months after planting; uproot whole plants and dry them on a clean surface; thresh by beating in a bag or on a tarpaulin; winnow, dry to about 13% moisture, dust with a storage pesticide and store in clean, aerated bags.
How Agriculture Answers Are Marked
Most short questions give half a mark per correct point, so a 2-mark question needs four clear points. In essays, each well-explained point usually earns one mark, so write in short numbered points with a verb and a reason, for example “weed early, to reduce competition for nutrients”. Measurements and named varieties earn marks that vague answers lose.
Agriculture Paper 2 (443/2) covers livestock production, farm structures and farm power, and Paper 3 is the project, assessed in school. See the KCSE 2026 guide for every subject we cover.