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Questions and Answers
What is the primary advantage of deep placement fertilizer?
What is the primary advantage of deep placement fertilizer?
- It prevents soil erosion during the growing season.
- It increases the overall biomass of the soil.
- It reduces fertilizer nitrogen losses and enhances crop uptake efficiency. (correct)
- It allows plants to absorb water more effectively.
How deep should briquettes be placed for optimal results?
How deep should briquettes be placed for optimal results?
- 4-6 centimeters
- 7-10 centimeters (correct)
- 1-3 centimeters
- 11-15 centimeters
Which method involves spraying liquid fertilizer directly onto plant leaves?
Which method involves spraying liquid fertilizer directly onto plant leaves?
- Foliar application (correct)
- Injection into soil
- Fertigation
- Deep placement
What is fertigation?
What is fertigation?
What is a common consequence of nutrient deficiency in plants?
What is a common consequence of nutrient deficiency in plants?
What type of application involves placing liquid or gaseous fertilizer into the soil?
What type of application involves placing liquid or gaseous fertilizer into the soil?
Which statement correctly describes the process of aerial application?
Which statement correctly describes the process of aerial application?
What is the primary limitation of using solid fertilizers compared to liquid options?
What is the primary limitation of using solid fertilizers compared to liquid options?
What is the primary benefit of using compound fertilizers in farming?
What is the primary benefit of using compound fertilizers in farming?
Which of the following is NOT a method of applying solid fertilizers?
Which of the following is NOT a method of applying solid fertilizers?
During which process is fertilizer spread over the entire soil area evenly?
During which process is fertilizer spread over the entire soil area evenly?
What type of application is avoided during heavy rains to prevent leaching?
What type of application is avoided during heavy rains to prevent leaching?
In which method is fertilizer placed at the bottom of the plough furrow?
In which method is fertilizer placed at the bottom of the plough furrow?
Which application method is recommended for poor root systems requiring small quantities of fertilizers?
Which application method is recommended for poor root systems requiring small quantities of fertilizers?
What must be ensured when using Top Dressing on crops?
What must be ensured when using Top Dressing on crops?
What is the primary purpose of Basal Application?
What is the primary purpose of Basal Application?
What is a primary benefit of adding coco peat to soil?
What is a primary benefit of adding coco peat to soil?
Which growing medium is derived from expanded volcanic glass?
Which growing medium is derived from expanded volcanic glass?
What is the definition of organic fertilizer?
What is the definition of organic fertilizer?
Which type of fertilizer can supply multiple nutrients in each granule?
Which type of fertilizer can supply multiple nutrients in each granule?
What characteristic is true about peat moss?
What characteristic is true about peat moss?
What is the primary function of sand in growing media?
What is the primary function of sand in growing media?
Which of the following is a characteristic of straight fertilizer?
Which of the following is a characteristic of straight fertilizer?
What is an example of a straight fertilizer?
What is an example of a straight fertilizer?
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Study Notes
Types of Fertilizers
- Multiple-nutrient granules in compound fertilizers promote uniform distribution of micronutrients in the root zone.
- Compound fertilizers are typically more expensive than other fertilizers.
- Liquid and powder fertilizers can be applied in different ways, including broadcasting, top dressing, and placement.
Application of Solid Fertilizer
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Broadcasting: Spreading fertilizer evenly across the soil area before or during crop growth; includes top dressing and basal application.
- Top Dressing: Fertilizer is spread over standing crops; must avoid plant contact to prevent damage.
- Basal Application: Fertilizer is mixed into the soil at sowing time.
-
Placement: Fertilizer is positioned in the soil without regard to seed or plant location; suited for small quantities and poorly developed root systems.
- Plough Sole Placement: Fertilizer is placed at the bottom of plough furrows, recommended in dry soils.
- Deep Placement: Involves placing fertilizer briquettes 7-10 cm deep near plant roots, promotes gradual nitrogen release.
Application of Liquid Fertilizers
- Foliar Application: Direct spraying onto leaves using a small amount of fertilizer.
- Injection into Soil: Liquid or gaseous fertilizers are placed below the soil near roots.
- Fertigation: Mixing water-soluble fertilizers with irrigation systems.
- Aerial Application: Spraying crops from an agricultural aircraft.
Nutrient Deficiency in Plants
- Nutrient deficiency occurs when plants lack essential nutrients necessary for growth.
- Growing mediums in native nurseries often include artificial soils made of peat moss or compost.
Types of Growing Media
- Coco Peat: Derived from coconut husks; enhances soil drainage.
- Perlite: Expanded volcanic glass; very porous and water-absorbent.
- Peat Moss: Partially decomposed plant layers; forms slowly in bogs.
- Sand: Naturally occurring; promotes proper airflow in soil.
Definition of Fertilizers
- Fertilizers are organic or inorganic materials that supply essential nutrients to promote plant growth.
- Types of fertilizers include organic and chemical, which can be in granular, powder, or liquid form.
Granular Fertilizers
- Straight Fertilizers: Supply a single nutrient; examples include urea, rock phosphate, and muriate of potash.
- Mixed Fertilizers: Combine multiple straight fertilizers to provide various nutrients.
- Compound Fertilizers: Contain multiple nutrients in each granule, facilitating comprehensive nutrient supply.
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