Irrigation and Water Management Flashcards
6 cards from real Agronomy practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Irrigation and Water Management flashcards as text
Which irrigation method delivers water directly to the root zone and is the most water-efficient?
Answer: Drip (trickle) irrigation
Drip irrigation delivers water slowly and directly to the plant root zone through emitters, minimizing evaporation and runoff losses.
What is evapotranspiration (ET) used for in irrigation management?
Answer: Estimating crop water use to schedule irrigation timing and amounts
ET estimates the combined water loss from soil evaporation and plant transpiration, providing the basis for scheduling irrigation to replace crop water use.
What is the field capacity of a soil?
Answer: The soil water content after free drainage has ceased following saturation
Field capacity is the soil moisture content remaining after excess water has drained under gravity, representing the upper limit of plant-available water.
Which of the following is a common method for measuring soil moisture in irrigated fields?
Answer: Tensiometer
Tensiometers measure soil water tension (suction), which indicates how tightly water is held in the soil and when irrigation is needed.
What is the permanent wilting point (PWP) of a soil?
Answer: The soil water content below which plants cannot recover turgor
The permanent wilting point is the soil moisture level at which plants can no longer extract water and will not recover even when water is added.
Center pivot irrigation systems are designed to apply water in what pattern?
Answer: Circular pattern around a central pivot point
Center pivots rotate around a fixed central point, applying water in a circular pattern and covering large areas efficiently.