QUESTIONS
SECTION A (30 marks)
Answer all the questions in this section in the spaces provided.
- State four human factors that influence agriculture. (2 marks)
- Name four methods of harvesting agroforestry trees. (2 marks)
-
- Differentiate between reafforestation and afforestation. (1 mark)
- Name four cover crops farmers can use for soil and water conservation. (2 marks)
- Name four types of water pumps. (2 marks)
- State four factors considered when selecting planting materials for forage crops. (2 marks)
- Which branch of agriculture deals with:
- utilisation of scarce resources? (1 mark)
- maintenance of farm tools and equipment? (1 mark)
- Give four factors that a farmer should consider in order to prepare good quality chicken manure. (2 marks)
- Give four reasons for keeping labour utilisation records. (2 mark)
- State four types of land reforms practised in Kenya. (2 marks)
- Give one use of each of the two types of inventory records kept by farmers. (2 marks)
Type of inventory record Use - State four characteristics of nitrogenous fertilisers. (2marks)
- Give four reasons why Kenyans should practise agroforestry. (2 marks)
- Distinguish between a dam and a weir. (1 mark)
- Name four types of grasses grown in high altitude areas as forage. (2 marks)
- Give four reasons for preparing a seedbed in crop production. (2 marks)
SECTION B (20 marks)
Answer all the questions in this section in the spaces provided.
- If a tomato crop is planted at a spacing of 100 cm by 50 cm, calculate the plant population for plot of land measuring 5 m by 6m. (5 mark)
- The diagram below shows a method of grafting.
- Identify the method of grafting. (1 mark)
- Name two other methods of grafting apart from the one illustrated. (2 mark)
- Give two reasons why a farmer may prefer using the grafting method illustrated. (2 mark)
- The diagram below shows a maize cob infected by a certain disease.
- Identify the disease. (1 mark)
- State two control measures for the disease. (2 marks)
- Name any other two diseases of maize in the field. (2 marks)
- The diagram below shows a crop rotation programme practised on a virgin land for three
Arrows show how crops were rotated after the first season.- Give one reason why:
- maize was planted first in plot A (1 mark)
- Irish potato was rotated with cabbage after the first season (1 mark)
- Name two crops that can be planted in the place of Irish potatoes in the rotation programme. (2 marks)
- Give a reason why it is important to include a grass lay in the rotation programme. (1 mark)
- Give one reason why:
SECTION C (40 marks)
Answer any two questions from this section in the spaces provided after question 22.
-
- Describe cabbage production under each of the following sub-headings:
- varieties (2 marks)
- nursery establishment (5 marks)
- Give seven agricultural support services available to wheat farmers in Kenya. (7 marks)
- Explain any six cultural methods of weed control. (6 marks)
- Describe cabbage production under each of the following sub-headings:
-
- Explain six harmful effects of crop pests. (6 marks)
- State four problems farmers encounter when marketing milk. (4 marks)
- Give four reasons why farmers should prepare a farm budget. (4 marks)
- Describe the harvesting of tea under the following sub-headings:
- harvesting procedure (3 marks)
- precautions taken during harvesting (3 marks)
-
- Describe five ways in which each of the following affects agriculture:
- HIV and AIDS (5 marks)
- poor economic growth (5 marks)
- Give five roles of calcium in the growing of tomatoes. (5 marks)
- State five details farmers should include in a purchase order. (5 marks)
- Describe five ways in which each of the following affects agriculture:
MARKING SCHEME
-
- Level of education and technology;
- Health;
- Economy;
- Government policy;
- Market forces;
- Cultural practices and religious beliefs;
- Transport and communication. 4x1⁄2 = (2 marks)
-
- Pruning;
- Coppicing;
- Pollarding;
- Thinning. 4x1⁄2 = (2 marks)
-
- Reafforestation is the planting of trees where forests have been cleared while afforestation is the planting of trees where they had never existed. ( 1 mark)
-
- Sweet potatoes;
- Lucerne;
- Desmodium;
- Spreading beans. 4x1⁄2 = (2 marks)
-
- Centrifugal/ rotardynamic pump;
- Piston/ reciprocating pump;
- Semi-rotary pump;
- Hydram. 4x1⁄2 = (2 marks)
-
- Adaptability to the local ecological conditions;
- Fast growth;
- High herbage yield;
- High germination percentage:
- High nutritive value;
- Pure/certified seed. 4x1⁄2 = (2 marks)
-
- Agricultural economics;
- Agricultural engineering. 2x1⁄2 = (2 marks)
-
- Type of litter;
- Type of food eaten;
- Method of storage;
- Age of the manure/maturity period. 4x1⁄2 = (2 marks)
-
- Help determine labour allocation;
- Determine labour requirements;
- Help settle labour disputes;
- Help determine peak labour demand periods;
- Determine cost of labour. 4x1⁄2 = (2 marks)
-
- Land consolidation;
- Land adjudication;
- Land registration;
- Settlement;
- Resettlement. 4x1⁄2 = (2 marks)
-
- Consumable goods inventory: records assets of the farm which are used up in the production process. (1 mark)
- Permanent goods inventory: records farm assets not used up in the production process. (1 mark)
-
- Highly volatile;
- Have scorching/ burning effects;
- Short residual effects;
- Highly soluble in water;
- Easily leached;
- Highly corrosive;
- They are hygroscopic.
-
- Supply forestry products;
- Increase productivity of the land;
- Soil and water conservation;
- Labour saving:
- Improves water catchment areas;
- Provide aesthetic value in the farm;
- Conserves forests. 4x1⁄2 = (2 marks)
-
- A dam is a barrier constructed across a river or dry valley to collect and hold large volume of water while
- A weir is a barrier constructed across a river to raise the water level and allow the excess water to flow over it.
-
- Kikuyu grass;
- Nandi Seteria;
- Giant Seteria;
- Rhodes grass;
- Molasses grass. 4x1⁄2 = (2 marks)
-
- Kill weeds;
- Incorporate organic matter into the soil;
- Aerates the soil;
- Encourage root penetration;
- Encourage water infiltration;
- Destroy different stages of crop pests.
- Plant population
= Area of land
Spacing
= 5m x 6m
100cm x 50 cm
= 500 x 600 = 300,000;
100 x 50 5000
= 60 plants; (5 marks) -
- Side grafting: ( 1mark)
-
- Whip/tongue;
- Approach;
- Bark;
- Notch; 2x1 = (2marks)
-
- When the scion is smaller in diameter than the root stock;
- To repair damaged trees;
- To produce different types of fruits on the same root stock;
- To utilize a high quality root stock. 2x1 = (2marks)
-
- Maize smut; ( 1mark)
-
- Crop rotation;
- Field hygiene;
- Use of certified/ clean seeds
- Use of fungicides; 2x1 = (2marks)
-
- Leaf blight;
- Rust;
- Maize steak 2x1 = (2 marks)
-
-
- Maize is a heavy/gross feeder hence starts on virgin land; (1 mark)
-
- Irish potato is a root crop while cabbage is a leaf crop hence different nutritional requirements;
- Irish potato and cabbage have different families of origin hence different pests and diseases. 1x1 = (1 mark)
-
- Sweet potatoes;
- Cassava;
- Carrots. 2x1 = (2 marks)
- To improve soil structure; control soil erosion. 1x1 = (1 mark)
-
-
-
- Varieties
- Brusnick;
- Sugar loaf,
- Early Jersey;
- Mukuki;
- Drum head;
- Copenhagen;
- Golden acre;
- Gloria;
- Sure-head;
- Savoy; 2x1 = (2 marks)
- Nursery Establishment
- Cabbage nursery should be sited in an area where the Brassica family crops have not been grown for the last three years;
- The nursery should be prepared to a fine tilth;
- Remove all roots, stones and perennial weeds.
- Shallow drills should be made 10 cm apart where seeds are evenly drilled and covered lightly with soil;
- Apply mulch on the surface which should be removed on emergence of the seedlings;
- Construct a thin shade over the nursery;
- Water the seedlings in the nursery regularly. 5x1 = ( 5marks)
- Varieties
-
- Tractor hire service;
- Banking services;
- Extension services;
- Farmer training:
- Credit services;
- Marketing services;
- Agricultural research;
- Input supply;
- Insurance. 7x1 = (7 marks)
-
- Crop rotation: to destroy weeds associated with certain crops;
- Timely planting: allows the crop to establish earlier before the weeds thus smothers weeds;
- Use clean seeds/planting materials: prevents entry of weeds to the farm land;
- Proper spacing: for the canopy to smother weeds/ leaves little space for weed growth;
- Clean seedbed: for the crop to establish and outcompete weeds; Flooding: to suffocate and discourage growth of non-aquatic weeds;
- Mulching to smother/ prevent growth of weeds;
- Cover cropping to smother/ prevent growth of weeds;
-
-
-
- Pests unearth planted seeds resulting to low crop population e.g. squirrels, mice.
- Pests damage crop roots causing wilting and death e.g. nematodes, moles, mites, etc.
- Destroy leaves reducing photosynthetic area, reducing yield e.g. cutworm, armyworm etc.
- They suck the plant sap leading to retarded growth e.g. aphids
- Pests attack fruits, berries, flowers, lowering their quality and quantity e.g. bollworm.
- Some pests destroy embryos of seeds-lowering germination potential e.g. weevils.
- Transmit diseases or open the plan to secondary infection e.g. aphids, mealy bugs
- Some pests attack the growing points of the crops leading to stunted growth e.g. stalk borer
-
- Perishability easily goes bad before marketing;
- Seasonality is plenty during rainy season hence floods the market;
- Bulkiness - is bulky hence difficult to store and transport;
- Storage - requires special storage facilities which are expensive;
- Poor transport system - most rural areas have poor road network 4x1 = (4 marks)
-
- To plan for the production process;
- To plan for the labour costs and other expected costs and revenue;
- Avoid over or under estimation;
- For future planning and budgeting;
- Assist in farm evaluation;
- Assist the farmer to get bank overdrafts and loans. 4x1 = (4 marks)
-
-
- Pluck using hands
- Pluck at intervals of 7 days in wet season and 10-14 days in dry season;
- Pluck the 1st and 2nd leaves and a bud;
- Ready for plucking at two years (pegging) or 4 years (formative pruned); 3x1 = (3 marks)
-
- Do not compress the tea leaves to prevent heating up;
- Keep plucked tea cool under shade as plucking continues;
- Deliver plucked tea leaves to the factory on the same day;
- Put plucked tea in woven basket to allow free air circulation. 3x1= (3 marks)
-
-
-
-
-
- Reduces population;
- Most affected are young and energetic leading to loss of manpower;
- Some of the affected are highly skilled whose life is lost leaving behind the old and unskilled;
- A lot of money and time is spent on treatment of opportunistic infections;
- Time spent on caring for the sick could be valuable for agricultural production;
- Loss of interest or motivation to invest in agriculture;
- Low food supply and increase in poverty in general;
- Low standards of living;
- Increased cost of living;
- Shortage of labour; 5x1 = (5 marks)
-
- compromises availability of capital for agricultural production;
- Poor marketing facilities;
- Poor use of natural resources;
- Collapse of agro-based industries;
- Low adoption of improved agricultural technologies/ innovations.
-
-
- It improves soil aeration;
- It improves water infiltration;
- Improves water holding capacity;
- Helps to neutralize acidic soils;
- Strengthens plant cell-wall;
- Increases protein synthesis;
- It is used in cell division;
- It improves cation exchange capacity (CEC). 5x1 = (5 marks)
-
- Purchase order number/ serial number;
- Types of goods required;
- Quantities of the goods ordered;
- Name of the farmer/ farm;
- Name and signature of authorizing person;
- Date within which the goods should be delivered. 5x1 = (5 marks)
-
Download AGRICULTURE Paper 1 Questions and Answers - KCSE 2022 Past Papers.
Tap Here to Download for 50/-
Get on WhatsApp for 50/-
Why download?
- ✔ To read offline at any time.
- ✔ To Print at your convenience
- ✔ Share Easily with Friends / Students