विधियों की तुलना करें

	Soil Moisture Curve	फसल वृद्धि मॉडल (DSSAT/APSIM)	पेनमैन-मोंटीथ समीकरण	मृदा श्वसन मापन
क्षेत्र	सस्य विज्ञान	सस्य विज्ञान	सस्य विज्ञान	सस्य विज्ञान
परिवार	Process / pipeline	Process / pipeline	Process / pipeline	Process / pipeline
उद्भव वर्ष	1956-1980	1993-2003	1948-1965	Mid-20th century (chamber methods formalised ~1950s–1970s; automated systems ~1990s)
प्रवर्तक	Willard Robert Gardner, Rollin H. Brooks, Arthur T. Corey	James W. Jones, Gerbrand T. Hoogenboom (DSSAT); Brian A. Keating, Peter S. Carberry (APSIM)	Howard Latimer Penman, John Monteith	Multiple contributors
प्रकार	Empirical soil water retention model	Mechanistic crop simulation pipeline	Mechanistic evapotranspiration model	Field measurement technique
मौलिक स्रोत	Gardner, W. R. (1956). Representation of soil aggregate-size distribution by a logarithmic-normal distribution. Soil Science Society of America Journal, 20(2), 151-153.	Jones, J. W., Hoogenboom, G., Porter, C. H., et al. (2003). The DSSAT cropping system model. European Journal of Agronomy, 18(3-4), 235-265.	Penman, H. L. (1948). Natural evaporation from open water, bare soil and grass. Proceedings of the Royal Society A, 193(1032), 120-145.	Hanson, P. J., Edwards, N. T., Garten, C. T., & Andrews, J. A. (2000). Separating root and soil microbial contributions to soil respiration: A review of methods and observations. Biogeochemistry, 48(1), 115–146.
उपनाम	Water Retention Curve, pF Curve, Characteristic Curve, SWRC	DSSAT, APSIM, Crop Simulation Model	PM Equation, FAO-56 PM, Evapotranspiration Model	soil CO2 efflux measurement, soil carbon flux measurement, belowground respiration measurement, soil surface CO2 flux measurement
संबंधित	3	3	3	1
सारांश	The soil moisture curve (or soil water retention curve, SWRC) describes the relationship between soil water content and soil matric potential (water tension). It characterizes how tightly water is bound in pores of different sizes: large pores drain at low tensions (wet soils), while smaller pores retain water at high tensions (dry soils). Quantifying this relationship is essential for water balance modeling, unsaturated flow prediction, and assessing plant-available water.	Crop growth models are mechanistic simulation systems designed to predict crop development, biomass accumulation, and yield under varying environmental and management conditions. DSSAT (Decision Support System for Agrotechnology Transfer) and APSIM (Agricultural Production Systems Simulator) are the most widely used platforms, developed in the 1990s-2000s to support agronomic decision-making and climate adaptation research.	The Penman-Monteith equation is a mechanistic model for estimating evapotranspiration (ET), the combined loss of water from soil and plant canopies to the atmosphere. First proposed by Penman (1948) for bare soil and water surfaces, then extended by Monteith (1965) to incorporate plant resistance to water vapor diffusion, it has become the international standard for water balance studies, crop water requirement calculation, and hydrological modeling.	Soil respiration measurement quantifies the rate at which CO2 is released from the soil surface to the atmosphere, integrating contributions from root respiration and microbial decomposition of organic matter. It is a fundamental technique in agronomy, ecology, and climate science, providing insight into belowground carbon cycling, soil biological activity, and ecosystem carbon balance. Measurements are typically made using static or dynamic chambers placed on the soil surface.