Define irrigation.
The artificial application of water to soil or land to assist in growing crops.
What is a drip irrigation system?
A method that delivers water directly to the base of plants through a network of tubing.
True or false: Surface irrigation relies on gravity to distribute water.
TRUE
Fill in the blank: Sprinkler systems use _______ to distribute water over a field.
pipes and nozzles
What is a timer in irrigation?
A device that automates the scheduling of watering times and durations.
Define subsurface irrigation.
A method where water is applied below the soil surface, reducing evaporation.
What is the purpose of a backflow preventer?
To prevent contaminated water from flowing back into the main water supply.
True or false: Soaker hoses are designed to seep water along their length.
TRUE
Fill in the blank: Rainwater harvesting involves collecting _______ for irrigation.
rainwater
What does ET stand for in irrigation?
Evapotranspiration, the sum of evaporation and plant transpiration.
Define flood irrigation.
A method where fields are flooded with water, allowing it to soak into the soil.
What is a valve in an irrigation system?
A device that controls the flow of water through pipes.
True or false: Micro-irrigation is suitable for small, high-value crops.
TRUE
Fill in the blank: Hydroponics is a method of growing plants without _______.
soil
What is a sump pump used for in irrigation?
To remove excess water from low areas to prevent flooding.
Define pivot irrigation.
A system that rotates around a pivot point, watering crops in a circular pattern.
What is the role of fertilizer injectors in irrigation?
To mix fertilizers with irrigation water for efficient nutrient delivery.
True or false: Irrigation scheduling is important for water conservation.
TRUE
Fill in the blank: Soil moisture sensors measure _______ content in the soil.
water
What is a water meter used for?
To measure the volume of water used in an irrigation system.
Define aeroponics.
A method of growing plants in air or mist without soil.
What is the purpose of drainage systems in irrigation?
To remove excess water from fields to prevent waterlogging.
True or false: Irrigation runoff can lead to water pollution.
TRUE
Fill in the blank: Mulching helps retain _______ in the soil.
moisture