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Irrigation Practices and Water Management
Research Guide
What is Irrigation Practices and Water Management?
Irrigation Practices and Water Management is the application of deficit irrigation and innovative techniques such as mulching, drip irrigation, and soil moisture management to enhance water use efficiency and crop productivity in arid and semiarid regions.
This field encompasses 60,438 works focused on physiological crop responses to water scarcity conditions. Key methods include computing crop evapotranspiration using meteorological data and crop coefficients as detailed in "Crop evapotranspiration : guidelines for computing crop water requirements" by Allen et al. (1998). Techniques like drip irrigation and mulching address soil moisture balance for horticultural crops in water-limited environments.
Topic Hierarchy
Research Sub-Topics
Deficit Irrigation Strategies for Crop Yield
This sub-topic evaluates regulated deficit irrigation timing and severity to optimize yield and quality in fruit trees and vegetables under water scarcity. Researchers conduct field trials measuring physiological responses and economic viability.
Drip Irrigation Systems and Water Use Efficiency
This sub-topic focuses on design, pressure compensation, and emitter clogging in drip systems to maximize WUE in row crops. Researchers model hydraulic performance and integrate with soil sensors for precision application.
Soil Moisture Management in Mulched Systems
This sub-topic examines organic and plastic mulching effects on evaporation suppression, root zone wetting, and microbial activity. Researchers use neutron probes and modeling to quantify moisture dynamics.
Crop Evapotranspiration Modeling
This sub-topic develops Penman-Monteith based models for reference and crop-specific ET under deficit conditions. Researchers validate against lysimeter data for scheduling irrigation.
Physiological Responses to Water Deficit
This sub-topic studies stomatal conductance, photosynthesis, and hormone signaling in crops under progressive drought. Researchers link gas exchange data to yield components via stress indices.
Why It Matters
Irrigation Practices and Water Management directly supports crop productivity in arid areas where water scarcity limits yields, with applications in designing systems for moisture, air, and salt balance as described in "Properties of Porous Media Affecting Fluid Flow" by Brooks and Corey (1966). For instance, "Crop evapotranspiration : guidelines for computing crop water requirements" by Allen et al. (1998) provides procedures used worldwide, cited 20,473 times, to calculate water needs for irrigation planning. These methods improve water use efficiency in rain-fed and irrigated agriculture, as evaluated in "Estimating Potential Evapotranspiration" by Hargreaves and Samani (1982), which compares four estimation approaches to meet growing food demands.
Reading Guide
Where to Start
"Crop evapotranspiration : guidelines for computing crop water requirements" by Allen et al. (1998) is the starting point because it provides foundational procedures for calculating water needs using meteorological data and crop coefficients, essential for all irrigation planning.
Key Papers Explained
Allen et al. (1998) in "Crop evapotranspiration : guidelines for computing crop water requirements" establishes evapotranspiration computation, which builds into Hargreaves and Samani (1982)'s "Estimating Potential Evapotranspiration" comparing practical methods. Saxton et al. (1986) in "Estimating Generalized Soil‐water Characteristics from Texture" supplies soil data for these models, while Brooks and Corey (1966) in "Properties of Porous Media Affecting Fluid Flow" explains underlying fluid dynamics. Doorenbos and Kassam (1979)'s "Yield response to water" links water deficits to yields, integrating with Feddes (1978)'s "Simulation of field water use and crop yield" for simulation applications.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Research continues to refine deficit irrigation models for arid crops, emphasizing soil moisture sensors and drip systems from cluster keywords. No recent preprints or news indicate steady focus on classical methods amid water scarcity challenges.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Crop evapotranspiration : guidelines for computing crop water ... | 1998 | — | 20.5K | ✕ |
| 2 | Effective and efficient global optimization for conceptual rai... | 1992 | Water Resources Research | 3.3K | ✕ |
| 3 | Properties of Porous Media Affecting Fluid Flow | 1966 | Journal of the Irrigat... | 2.3K | ✕ |
| 4 | A Test of a Modified Line Intersect Method of Estimating Root ... | 1975 | Journal of Ecology | 2.3K | ✕ |
| 5 | Model for predicting evaporation from a row crop with incomple... | 1972 | Water Resources Research | 2.2K | ✕ |
| 6 | Yield response to water. | 1979 | — | 2.0K | ✕ |
| 7 | Estimating Generalized Soil‐water Characteristics from Texture | 1986 | Soil Science Society o... | 1.9K | ✕ |
| 8 | Simulation of field water use and crop yield | 1978 | Wageningen University ... | 1.9K | ✓ |
| 9 | Estimating Potential Evapotranspiration | 1982 | Journal of the Irrigat... | 1.9K | ✕ |
| 10 | Root Architecture and Plant Productivity | 1995 | PLANT PHYSIOLOGY | 1.9K | ✓ |
Frequently Asked Questions
What is the standard method for computing crop water requirements?
The FAO procedure in "Crop evapotranspiration : guidelines for computing crop water requirements" by Allen et al. (1998) calculates reference and crop evapotranspiration from meteorological data and crop coefficients. This updated method from the 1977 paper enables accurate irrigation scheduling. It has been cited 20,473 times for global applications.
How does deficit irrigation affect crop productivity?
Deficit irrigation strategies improve water use efficiency by managing soil moisture levels in arid regions. Papers like "Yield response to water" by Doorenbos and Kassam (1979) quantify yield reductions under water deficits. These approaches sustain productivity for horticultural crops under scarcity.
What role does soil texture play in water management?
Soil-water characteristics can be estimated from texture using models in "Estimating Generalized Soil‐water Characteristics from Texture" by Saxton et al. (1986). This provides hydraulic conductivity and potential relationships without costly measurements. It supports irrigation design for plant growth.
How is evapotranspiration estimated for irrigation?
"Estimating Potential Evapotranspiration" by Hargreaves and Samani (1982) evaluates four methods including temperature-based approaches for agricultural water needs. These aid both irrigated and rain-fed systems amid population growth. The work has 1,871 citations.
Why is root length estimation important in irrigation studies?
The modified line intersect method in "A Test of a Modified Line Intersect Method of Estimating Root Length" by Tennant (1975) measures root systems affecting water uptake. Accurate root data informs soil moisture management models. It has 2,264 citations in ecological and agricultural research.
What are key factors in porous media for fluid flow in soils?
"Properties of Porous Media Affecting Fluid Flow" by Brooks and Corey (1966) details moisture retention and drainage for irrigation systems. Engineers use these properties to balance water, air, and salts for crops. The paper has 2,273 citations.
Open Research Questions
- ? How can conceptual rainfall-runoff models achieve unique parameter calibration under varying irrigation scenarios, as calibration remains challenging per Duan et al. (1992)?
- ? What precise evaporation rates apply to row crops with incomplete cover during early growth stages without water limitations?
- ? How do root architectures optimize water acquisition in nutrient-poor arid soils to boost yields?
- ? Which soil-water characteristic models best predict field water use and crop yield under deficit irrigation?
- ? How do generalized texture-based estimates improve real-time irrigation decisions in semiarid regions?
Recent Trends
The field holds 60,438 works with sustained emphasis on deficit irrigation, drip systems, and mulching for water use efficiency in arid areas, as no growth rate or recent preprints are available.
Highly cited classics like Allen et al. with 20,473 citations remain central, reflecting stable reliance on evapotranspiration guidelines.
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