Crop Production and Management
Focused last-minute revision notes with clear concepts, exam traps, key comparisons and compact practice.
Chapter Snapshot
- A crop is a large-scale cultivation of plants of the same kind at one place.
- Kharif crops are mainly grown in the rainy season; Rabi crops mainly in winter.
- The crop cycle is: soil preparation → sowing → nutrients → irrigation → weeding → harvesting → storage.
- Ploughing loosens soil, improves aeration and supports root growth.
- A seed drill helps sow healthy seeds at suitable depth and spacing.
- Manure improves soil structure; fertilisers supply concentrated nutrients.
- Drip and sprinkler systems can use water more efficiently than uncontrolled flooding.
- Weeds compete with crops for light, water, nutrients and space.
- Harvesting is followed by threshing, winnowing, drying and safe storage where required.
What You Will Learn
- Classify common crops as Kharif or Rabi
- Arrange agricultural practices in correct sequence
- Explain soil preparation and sowing
- Compare manure and fertilisers
- Explain irrigation and weed control
- Differentiate harvesting, threshing and winnowing
- Explain why grains must be dried before storage
Last-Minute Chapter Map
Crop production is a sequence of connected practices; poor management at one stage can reduce final yield.
1. Crops and Crop Seasons
When plants of the same kind are grown on a large scale, they form a crop. Crop choice depends on temperature, rainfall, soil and water availability.
Kharif crops are generally sown with the monsoon and include paddy, maize, cotton and soybean. Rabi crops are generally sown in winter and include wheat, gram, pea and mustard. Exact months vary by region, so remember the season rather than memorising dates alone.
2. Preparation of Soil
The field is first tilled or ploughed. Loosening soil lets roots penetrate more deeply, increases air spaces, improves water entry and helps mix manure. Large clods are broken and the field is levelled so water spreads more uniformly.
Common implements include the plough, hoe and tractor-driven cultivator.
3. Sowing
Healthy, disease-free seeds should be chosen and placed at proper depth and spacing. Very deep seeds may struggle to emerge; very shallow seeds may dry out or be eaten. Overcrowded plants compete strongly for resources.
A seed drill places seeds in rows at more uniform depth and spacing and covers them with soil.
4. Manure, Fertilisers and Crop Rotation
Manure is decomposed organic matter. It adds humus, improves soil structure and water-holding capacity, but usually contains nutrients in lower concentration. Fertilisers provide specific nutrients such as nitrogen, phosphorus and potassium in concentrated form. Overuse can pollute water and disturb soil quality.
Crop rotation, especially including legumes, can help maintain soil fertility.
5. Irrigation
Irrigation is the artificial supply of water to crops. Its timing depends on crop, soil, climate and growth stage. Too little water causes poor growth; too much may reduce soil aeration.
Sprinkler irrigation sprays water like rain and is useful on uneven land. Drip irrigation delivers water near roots and is especially water-efficient for orchards and widely spaced crops.
6. Weeds and Weed Control
Weeds are unwanted plants growing with crops. They compete for water, minerals, light and space and may interfere with harvesting. Weeds can be removed manually, with tools, or controlled using suitable weedicides. Chemical control must follow recommended dose and safety guidance.
7. Harvesting and Storage
Harvesting is cutting the mature crop. Threshing separates grain from stalks. Winnowing uses moving air to separate lighter chaff from heavier grains.
Before storage, grains are dried to reduce moisture. Safe storage protects them from fungi, insects, rodents and spoilage. Large-scale storage may use granaries and silos.
Manure vs Fertilisers
| Feature | Manure | Fertilisers |
|---|---|---|
| Source | Decomposed plant/animal waste | Manufactured or processed nutrient sources |
| Organic matter | Adds humus | Usually adds little humus |
| Nutrient concentration | Lower | Higher |
| Main advantage | Improves soil condition | Supplies specific nutrients quickly |
Exam Focus
Must Revise Before the Exam
- Kharif vs Rabi crops
- Sequence of agricultural practices
- Benefits of ploughing
- Seed drill
- Manure vs fertiliser
- Drip vs sprinkler irrigation
- Weeds and weedicides
- Harvesting, threshing, winnowing
- Grain drying and storage
Common Mistakes
Key Terms
Key Terms
Quick Revision
Quick Revision
- Kharif = rainy-season crops; Rabi = winter crops.
- Ploughing improves root growth and aeration.
- Correct seed depth and spacing improve crop establishment.
- Manure improves soil; fertiliser supplies concentrated nutrients.
- Drip irrigation targets roots and saves water.
- Weeds compete with crops and should be controlled before heavy seed production.
- Dry grain before storage to reduce fungal and microbial spoilage.
Practice Questions
Which is a Kharif crop?
A. Wheat
B. Gram
C. Paddy
D. Mustard
View Solution
Correct Answer: C. Paddy
Paddy is commonly grown during the rainy or Kharif season.
Which implement places seeds at suitable depth and spacing?
A. Sickle
B. Seed drill
C. Hoe
D. Granary
View Solution
Correct Answer: B. Seed drill
A seed drill places seeds in rows at more uniform depth and spacing.
Which method supplies water close to roots?
A. Drip irrigation
B. Winnowing
C. Threshing
D. Ploughing
View Solution
Correct Answer: A. Drip irrigation
Drip irrigation delivers water near the root zone.
Winnowing separates:
A. grain from stalk
B. chaff from grain
C. weeds from crop
D. seeds from soil
View Solution
Correct Answer: B. chaff from grain
Moving air carries lighter chaff farther than heavier grains.
Why is soil loosened before sowing?
View Solution
Loose soil allows roots to penetrate, improves aeration and water entry, and helps mix organic matter and nutrients.
Why should grains be dried before storage?
View Solution
Drying lowers moisture, reducing fungal growth, microbial spoilage, unwanted germination and insect damage.
A farmer has little water and widely spaced fruit plants. Which irrigation method is suitable?
View Solution
Drip irrigation is suitable because it delivers water close to individual root zones and reduces unnecessary evaporation and runoff.
Chapter Summary
Chapter Summary
- Kharif = rainy-season crops; Rabi = winter crops.
- Ploughing improves root growth and aeration.
- Correct seed depth and spacing improve crop establishment.
- Manure improves soil; fertiliser supplies concentrated nutrients.
- Drip irrigation targets roots and saves water.
- Weeds compete with crops and should be controlled before heavy seed production.
- Dry grain before storage to reduce fungal and microbial spoilage.