Crop Production and Management Notes

Crops

Plants of the same kind that are grown and cultivated as a source of food in a large cultivable land is called a crop. Crops may be food Crops, cash crops or commercial crops. Plants grown primarily for human use but not for making profit are called food crops examples; grains (like rice and wheat), vegetables, fruits, and legumes. Cash Crops are grown for the purpose of selling them and making profit , such as cotton, sugarcane, and tea. Additionally crops can be classified as fibre crops, pulses, cereals, legumes, fruits etc.

Types of Crops based on the season:

Kharif Crops	Examples: Rice, Maize, Millet, Cotton, Soybean	Season: June TO October (Monsoon)
Rabi Crops	Examples: Wheat, Barley, Mustard, Peas	Season: October TO March (Winter)

Steps of Farming

Farming is a process that involves several important steps to grow healthy crops and ensure good yield. The main steps in farming are:

1. Preparation of Soil

2.Sowing seeds

3. Adding Manure and Fertilizers

4. Irrigation

5. Protection from Weeds and Pests..

6. Harvesting

7. Threshing and Winnowing

8. Storage

Preparation of Soil

Preparation of soil is the first step before sowing seeds. It helps the soil become fertile, aerated, and suitable for seed sowing. The 3 important steps involved in soil preparation are:

1. Ploughing (Tilling): During this process, the soil is loosened and turned upside down using a plough. This helps in improving the movement of air deep into the soil and allows roots to penetrate deeper. For the sake of ploughing, a plough is used by the farmers for different purposes, such as adding fertilizers, tilling and loosening the soil

Plough

A. Plough is used for adding fertilizers to the soil, removing weeds, scraping of soil, etc.

B. The ploughshare is the triangular iron strip.

C. A ploughshaft is the main part of the plough, which is made using a log of wood.

D. The other end of the shaft has a handle.

E. The other end is attached to a beam which is placed on the bull’s neck.

F. A wooden, traditional plough can be operated by a pair of ox and a man.

G. Nowadays, these wooden ploughs are being replaced by iron ploughs.

2.Levelling: Ploughing makes soil uneven so, a leveller is used to break down large soil clumps into fine dust which helps to level the field. Levelling ensures uniform distribution of water during irrigation. It p revents soil erosion caused by wind or water and it also aids inproper seed sowingand crop growth.

3. Manuring/Adding manure

Manuring is the third important step in soil preparation. After ploughing and levelling, nutrients in the soil may be lost or insufficient. Manuring means adding natural or chemical substances (called manure or fertilizers) to the soil to make it fertile and suitable for healthy crop growth.

Purpose of Manuring:

• Replenishes nutrients lost from the soil due to previous crops.
• Improves soil fertility and enhances crop yield.
• Helps in the growth of healthy plants by supplying essential nutrients like nitrogen, phosphorus, and potassium.
• Improves soil structure and water-holding capacity, especially with organic manure

A hoe is a tool that is used to dig up soil to remove weeds and also loosen up the soil before planting a sapling.

Cultivator

1. A cultivator is attached to the tractor and helps in loosening soil.

2. Cultivators are used instead of ploughs since they are faster.

Sowing of seeds

Sowing is the process of planting seeds in the prepared soil. It is a crucial step in farming, as the success of the crop depends on the quality and method of sowing. Proper sowing ensures that plants grow well, get enough sunlight, air, nutrients, and water, and develop into healthy crops.

Important Aspects of Sowing:

• Selection of good quality seeds: Seeds must be clean, healthy, and of high yield variety.
• Proper depth and spacing: Seeds should be sown at the right depth to ensure proper germination and should be spaced to avoid overcrowding.
• Right time of sowing: Seeds must be sown according to the season and crop type.
• Sowing methods: Seeds can be sown manually by hand or using tools like seed drills for uniform distribution.

Techniques of Sowing Seeds

There are several methods used to sow seeds in the field. The choice of technique depends on the type of crop, size of the field, and tools available. The main techniques are:

1. Broadcasting: Seeds are scattered by hand over the soil surface. It is simple and quick method but often leads to uneven distribution. It is suitable for small farms and grass crops.

2. Drilling: Seeds are sown with the help of a seed drill , which places seeds at proper depth and spacing . It is used in modern farming . Drilling allows uniform distribution of seeds and better germination. It is economical as it saves time and labor.

3. Dibbling: Seeds are placed manually into holes or pits at a fixed depth and distance. It is used for larger seeds like maize or beans. It helps in proper spacing and growth.

4. Transplantation: Seedlings are grown in a nursery initially for sometime and then they are transplanted to the main field. Common for crops like paddy and tomato . It helps in selecting healthy plants.

Nursery

A nursery is a place where young plants or seedlings are grown and nurtured under controlled conditions before being transplanted to the main field. It is commonly used in agriculture and horticulture for crops that need special care during the early stages of growth.

Importance of Nursery for Farmers:

• Healthy Seedlings: Farmers can grow strong and disease-free plants in the nursery.
• Better Germination Rate: Controlled conditions ensure higher germination of seeds.
• Time and Space Saving: While the main field is being prepared, seedlings can grow in the nursery.
• Easy Monitoring: Watering, manuring, and pest control are easier in a small area.

Germination of Seeds

Germination is the process by which a seed develops into a new plant under suitable conditions. It is the beginning of a plant's life cycle.

Conditions Required for Germination:

1. Water: Activates enzymes and softens the seed coat.

2. Oxygen (Air): Needed for the seed to perform respiration and produce energy.

3. Suitable Temperature: Helps in enzyme activity and proper growth of the embryo.

Stages of Germination:The seed absorbs water and swells which leads to breakage of seed coat .In the next phase a radicle (baby root) comes out first and grows downward along with the plumule (baby shoot) grows upward toward the light.

Adding Manure and Fertilisers

Manure and fertilizers are added to the soil to restore and increase its fertility , ensuring healthy growth and high yield of crops. To replenish nutrients lost from the soil after repeated crop growing. Manure increase yield a nd crop quality by the healthy development of roots, stems, and fruits.

Differences between Manure and Fertilizers

Fertilizer	Manure
Fertilizer is an inorganic salt like Nitrogen (N) , Phosphorus (P), and Potassium (K) (often called NPK).	Manure is prepared from organic matter such as human waste, cow dung and farm waste, etc
Fertilizers are manufactured in factories	Manures can be prepared on farms
Fertilizers are added in comparatively smaller quantities	Manures need to be added in large quantities as the nutrient content is less
Fertilizers do not provide any humus to the soil	Manures provide a lot of humus to the soil

Disadvantages of Using Fertilizers

Although fertilizers assist in increasing crop yield, their excessive or improper use can cause several problems:

1. Soil Pollution: Overuse of chemical fertilizers can damage the natural composition of the soil, reducing its fertility over time.

2. Water Pollution: Excess fertilizers can get washed into nearby water bodies during rain or irrigation, causing eutrophication —excessive growth of algae that harms aquatic life.

3. Harm to Soil Organisms: Useful microbes and earthworms that maintain soil health may die due to strong chemicals in fertilizers.

4. Health Hazards: Crops grown with too many fertilizers may carry harmful chemical residues, which can affect human health when consumed.

5. Dependency:Continuous use of fertilizers can make farmers dependent on them, reducing the use of organic alternatives.

6. Expensive: Chemical fertilizers are often expensive and may not be affordable for all farmers.

Irrigation

Irrigation is the process of supplying water to crops at regular intervals to help them grow properly. It is essential in areas where rainfall is insufficient or irregular. Irrigation prevents drying of soil and Increases crop yield and quality.

Common Irrigation Techniques:

1. Traditional Methods: These are simple and low-cost methods, often using human or animal power.

o Moat (Pulley system): Water is drawn from a well using a bucket.

o Chain Pump: Uses a chain to lift water.

o Dhekli: A lever system to lift water.

o Rahat: Water is drawn using animals.

2. Modern Methods: These are efficient and save water by minimizing wastage.

o Sprinkler System: Water is sprayed through pipes in the form of rain-like droplets. It is best for sandy soil and uneven land.

o Drip Irrigation: Water drips slowly at the base of each plant through pipes. It saves water and is ideal for water-scarce areas.

o Surface Irrigation (Canals, Furrows): Water flows through channels or furrows in the field. It is very common but less water-efficient. Ensures healthy crop growth .

Protecting the crops from Weeds

Weeds are unwanted plants that grow alongside crops and compete with them for nutrients, water, sunlight, and space. If not controlled, weeds can greatly reduce crop yield.

Ways to Protect Crops from Weeds:

1. Weeding (Manual Removal): Removing weeds by hand or using tools like khurpi. This method is useful for small farms and during early crop stages.

2. Tillage: Farmers Plough the field before sowing which helps to pull the weeds roots up and destroy them.

3. Using Weedicides (Chemical Control): Special chemicals like 2,4-D are sprayed to kill weeds without harming crops. It should be used in correct quantity and at the right time (usually before flowering of weeds).

4. Mulching: It is the process of covering the soil with dry leaves, straw, or plastic to block sunlight, which prevents weed growth.

5. Crop Rotation and Intercropping: Changing crops seasonally and growing multiple crops together reduces the chance of weed domination.

Harvesting

Harvesting is the process of cutting and collecting mature crops from the field when they are ready. It marks the end of the crop-growing cycle and is a very important step in farming, It is done when the grains become hard and dry and when fruits or vegetables are fully ripened .

Methods of Harvesting:

• Manual Harvesting: It is done using simple tools like sickles. Commonly used by small farms and for delicate crops.
• Mechanical Harvesting: Done using machines like harvesters or combine harvesters. It is fast and efficient for large-scale farming.

Harvest Festivals:

Harvesting is often followed by celebrations in different parts of India. It is called with different names in different states . For example; Pongal in Tamil Nadu, Sankranti in Karnataka , Baisakhi in Punjab And Onam in Kerala

Separation of seeds

Threshing

• Threshing is the process of loosening the grains from the chaff.
• While it can be done manually, a machine is used that separates all the grain seeds these days.

Winnowing

• Winnowing is the process that separates grain seeds from the chaff using the help of the wind.
• Due to the wind, the lighter chaff flies away, and the heavier grains fall down.

6. Storage of Crops

After harvesting, storing crops properly is very important to protect them from pests, moisture, and spoilage. Good storage ensures that the crops remain fresh and safe for use over time. Proper storage prevents damage by insects, rats, and fungi . It helps to avoid spoilage due to moisture and maintain quality and quantity of grains. Better storage helps in selling the crops later at better prices

Methods of Storage:

1. For Small Farmers:

o Jute bags, clay pots, metal bins , or wooden boxes

o Grains are sun-dried before storing to remove moisture

2. For Large Scale Storage:

o Granaries: Large buildings used to store grains

o Silos: Tall, cylindrical structures made of metal or concrete

o Cold Storage: Used for perishable crops like fruits and vegetables to keep them fresh

Precautions during Storage:

• Crops must be completely dry before storage
• Regular cleaning and fumigation of storage spaces
• Use of natural or chemical pest control to avoid infestation

Animal Husbandry

Animal husbandry is the scientific care, breeding, and management of farm animals like cows, buffaloes, sheep, goats, poultry, and fish for useful products such as milk, meat, eggs, wool, and hides. Animal husbandry provides milk, meat, eggs, wool, and leather which can provide additional income to farmersespecially in rural areas. It helps in agriculture—animals like oxen are used for ploughing. Animal husbandry supports organic farming through manure and natural fertilizers.

Types of Animal Husbandry:

1. Dairy Farming:
Rearing of animals like cows and buffaloes for milk production.

2. Poultry Farming:
Rearing of chickens, ducks, and turkeys for eggs and meat.

3. Sheep and Goat Rearing:
For meat, milk, and wool.

4. Fish Farming (Pisciculture):
Breeding and raising fish in tanks or ponds.

5. Bee Keeping (Apiculture):
Rearing of bees for honey and wax.

Techniques of Better Farming

To improve crop yield, soil health, and sustainability, modern farming uses better and scientific techniques. These help farmers increase productivity while protecting natural resources.

1. Crop Rotation

• Growing different crops in a sequence on the same land.
• Prevents soil nutrient loss and controls pests and diseases .
• Example: Rotating wheat with legumes to naturally add nitrogen to the soil.

2. Mixed Farming

• Growing crops and rearing animals on the same farm.
• Provides additional income and ensures better resource use .

3. Organic Farming

• Using natural fertilizers (compost, cow dung) and biopesticides.
• Avoids chemical use and promotes eco-friendly agriculture.

4. Use of HYV Seeds (High Yielding Variety)

• Specially developed seeds that give more output.
• Require proper irrigation and fertilizers.
• Common in crops like wheat, rice, maize.

5. Modern Irrigation Methods

• Efficient techniques like drip irrigation and sprinklers save water and improve crop growth.

6. Integrated Pest Management (IPM)

• Combining natural and chemical methods to control pests.
• Reduces harmful effects of pesticides.

7 . Soil Testing and Fertilizer Management

• Testing soil to know nutrient levels.
• Applying right fertilizers in the right amount to maintain soil health.

Question Answers

Question 1.Select the correct word and fill in the blanks.

(Float, water, crop, nutrients, preparation)

1. The same kind of plants grown on a large scale at a place is called _________

2. An important task in growing crops is _________ of soil.

3. Damaged seeds would ___________ on top of the water.

4. For growing crop sufficient sunlight and _________ and _________ from the soil are essential.

Answers:

1. crop

2. preparation

3. float

4. water, nutrients

Question 2.Match items in column ‘A’ with those in column ‘B’:

(A) (B)

(i) Kharif crops (a) Food for cattle

(ii) Rabi crops (b) Urea and superphosphate

(iii) Chemical fertilizers (c) Animal excreta, cowdung, urine

(iv) Organic manure (d) Wheat, gram, pea

(e) Paddy and maize

Answer:

(A) (B)

(i) Kharif crops (e) Paddy and maize

(ii) Rabi crops (a) Wheat, gram, pea

(iii) Chemical fertilizers (b) Urea and superphosphate

(iv) Organic manure (c) Animal excreta, cow dung, urine, and plant waste.

Question 3. Give two examples of each of the following:

(?) Kharif crop

(b) Rabi crop

Answers:

(a) Kharif crops are Maize, paddy, soybean

(b) Rabi crops are Wheat, gram, pea

Question 4.Write a paragraph in your own words on each of the following:

(?) Preparation of soil

(b) Sowing

(c) Weeding

(d) Threshing

Answer:

(a) Preparation of soil. Preparation of soil involves two main steps-ploughing and levelling. Ploughing is the process of loosening and turning the soil so that the circulation of air is improved in the soil. It is done with the help of various types of ploughs like wooden iron for hard soil, bullock drawn, or tractor driven. Loosening of soil permits easy and deeper penetration of the roots and it provides good aeration to the roots. The ploughed land is levelled and pressed lightly with the help of a wooden plank or iron leveller.

(b) Sowing. Sowing is the process of putting seeds in the soil. Sowing can be done manually or by using a seed drill.

(c) Weeding. The removal of weeds is called weeding. It is necessary since weeds use nutrients from the soil. They compete for water and light and thus, affect the growth of crops by reducing the yield. Some weeds even interfere in the harvesting. Weeds can sometimes be poisonous for animals and human beings.

(d) Threshing. The process of separating grains from the harvested crop is called threshing. It may be done manually by striking the harvested crop against a hard surface or by using a machine called a thresher.

Question 5. Explain how fertilizers are different from manure.

Answer: Differences between Fertiliser and Manure

Fertilizers	Manure
Fertilizers are chemical or synthetic substances that supply nutrients to plants.	Manure is organic matter, usually decomposed animal dung or plant waste, used to enrich soil.
They contain concentrated nutrients like nitrogen, phosphorus, and potassium in specific ratios.	They contain nutrients in lower concentrations along with organic matter that improves soil texture.
Fertilizers act quickly to provide nutrients to plants.	Manure improves soil fertility gradually by enriching it with organic matter and microorganisms.
Excessive use can lead to soil and water pollution.	Manure improves soil health and structure without harming the environment if used properly.
Examples: Urea, superphosphate, ammonium nitrate.	Examples: Cow dung, composted plant waste, poultry manure.

Question 6. What is irrigation? Describe two methods of irrigation which conserve water.

Answer:The supply of water to crops at different intervals is called irrigation. Methods of irrigation which conserve water are:

1. Sprinkler system: This system is useful on uneven lands where water is available in smaller quantities. In this system, the perpendicular pipes, having rotating nozzles on the top, are joined to the main pipe at regular intervals. When the water flows through the main pipe with the help of a pump, it escapes from the rotating nozzles. It is sprinkled on the crop as if it is raining.

2. Drip system. In this system, the waterfalls drop by drop just at the position of the roots. This system consists of the main pipe to which lateral pipes are joined. The specially prepared nozzles are attached to these lateral pipes. The nozzles are grounded just near the roots of the plants. It provides water to plants drop by drop. Water is not wasted at all.

Question 7.If wheat is sown in Kharif season, what would happen? Discuss.

Answer:If wheat is sown in the Kharif season then it would not grow because a lot of water due to rain will spoil the seeds. Wheat crops require low temperature which it does not get in the Kharif season. Therefore, the quantity of wheat produced will be very less and quality will also be very poor.

Question 8. Explain how the soil is affected by the continuous plantation of crops in a field.

Answer: Continuous plantation of crops in a field year after year makes the soil barren in a few years because all the nutrients present in the soil will be depleted.

Question 9. What are weeds? How can we control them?

Answer:The undesirable plants in the field are called weeds which have to be removed, otherwise, our own crop plants may not get sufficient water, space, and light. The various methods to control the weeds are:

Mechanical method. Uprooting weeds with khurpi or hand, ploughing, burning, and flooding.

Cultural method, lb prepare proper seedbed and sowing of seed timely and intercropping and crop rotation are the methods included under cultural method.

Chemical method. By spraying chemicals known as herbicides or weedicides e.g. 2,4-D fluchloralin etc.

Question 10. Arrange the following boxes in proper order to make a flow chart of sugarcane crop production:

Answer:

Question 11. Complete the following word puzzle with the help of clues given below.

Down

1. Providing water to the crops.

2. Keeping crop grains for a long time under proper conditions.

5. Certain plants of the same kind grown on a large scale.

Across

3. A machine used for cutting the matured crop.

4. A rabi crop that is also one of the pulses.

6. A process of separating the grain from the chaff.

Additional Question Answers

Question 1. Why do organisms need energy?

Answer: Organisms need energy for carrying out their various body functions, such as digestion, respiration, and excretion.

Question 2. What is agriculture?

Answer: Agriculture is the study of science and the art of production of plants and animals useful to man.

Question 3.What is a crop?

Answer: The plants of the same kind grown at a place are called a crop. Examples are wheat, paddy, etc.

Question 4. What are agricultural practices?

Answer: The various tasks like preparation of soil, sowing seeds, irrigation, removal of weeds, use of manures and fertilizers, etc carried by farmers to cultivate crops are agricultural practices.

Question 5. Why is soil loosened?

Answer: The loosened soil allows the roots to penetrate freely, deeper, and breathe easily. The loosened soil also helps in the growth of earthworms and microbes, who are friends of the farmer, since they aid in further turning and loosening the soil and add humus to it.

Question 6. Why does the loosening of soil allow roots to breathe easily?

Answer:Air easily enters the loosened soil and thus, allows roots to breathe easily.

Question 7. Name the main tools used for ploughing. Explain their use and structure with the help of a diagram.

Answer(REFER TEXT BOOK FOR DIAGRAMS AND DRAW THEM IN HW AND CW)

The main tools used for ploughing are plough, hoe, and cultivator.

(i) Plough. It is used for tilling of the soil, adding fertilizers to the crop, removing the weeds, and scrapping of soil. Plough is made of wood and drawn by a pair of bulls. It contains a strong triangular iron strip called plough share. Its main part is a long log of wood called a plough shaft. There is a handle on one end. The other end is attached to a beam which is hung on the bulls necks. One pair of bulls and a man operates the plough.

(ii) Hoe is a simple tool used for removing seeds and loosening the soil. Hoe has a long rod of wood or iron. A strong, broad, and bent plate of iron is fixed to one of its ends and works as a blade. The other end of plough shaft is pulled by animals.

(iii) Cultivator. Nowadays ploughing is done by tractor driven cultivator. The use of a cultivator saves labour and time

Question 8.What is sowing?

Answer:Sowing is the process of putting seeds in the soil.

Question 9. What is meant by good quality seeds?

Answer:Good quality seeds mean clean and healthy seeds of a good variety.

Question 10. What are manures?

Answer: Manures are organic materials which supply all the elements a plant needs in small amounts. Besides serving as a source of nutrients, organic manures improve the physical conditions of the soil.

Question 11. What is organic manure?

Answer:Any organic matter obtained from plant or animal wastes is called organic manure.

Question 12. How do farmers make manure?

Answer:Farmers dump plant and animal wastes at open places and allow them to be decomposed by organisms like bacteria and fungi. The decomposed matter is called manure.

Question 13. What is irrigation?

Answer:Once the seeds or the seedlings establish themselves in the field, water is again given in the field. This is known as irrigation.

Question 14. What are the sources of irrigation?

Answer:The sources of irrigation are wells, tubewells, ponds, lakes, rivers, dam,s and canals.

Question 15. Draw a diagram to show sprinkler system and drip system.

Answer: Refer Text Book

Question 16. What are weeds?

Answer: Weeds are undesirable plants which grow along with crops and compete for sunlight, water, and nutrients, thus decreases the yield of the main crop.

Question 17. Give two examples of weeds?

Answer:Wild oat, Chenopodium, Amaranthus.

Question 18. What is weeding? Why is it necessary?

Answer:The removal of weeds is called weeding. It is necessary since weeds use nutrients from the soil. They compete for water and light and thus, affect the growth of crops by reducing the yield. Some weeds even interfere in the harvesting. Weeds can sometimes be poisonous for animals and humans beings.

Question 19.What is harvesting?

Answer:Harvesting is the process of cutting and collecting the matured crop from the fields.

Question 20. What is threshing?

Answer:The process of separating grains from the harvested crop is called threshing. It may be done manually by striking the harvested crop against a hard surface or by using a machine called a thresher.

Question 21. What does storage mean?

Answer: Storage means keeping the harvested fruits till they are taken finally to the consumer. Seeds are stored to protect them from birds, insects, rodents, and micro-organisms and also for use during periods of food scarcity.

Question 22. What precautions are taken before storing the grains?

Answer:Before storing the grains they are sun-dried to reduce the moisture level of grains so that they are saved from pest attacks. Humidity in storage places must also be controlled to prevent the growth of fungus.

Question 23. Why are dried neem leaves used for storing food grains at home?

Answer:Dried neem leaves protect food grains from pests and microorganisms.

Question 24. Name the foods obtained from animals?

Answer:Milk, eggs, fish, and meat.