https://escholarship.org/content/qt6cx187pf/qt6cx187pf.pdf?t=pq1ugd

A comparison of the HYDRUS (2D/3D) and SALTMED models to investigate the influence of various water-saving irrigation strategies on the maize water footprint

Simulating maize yields when irrigating with saline water, using the AquaCrop, SALTMED, and SWAP models

Good management will be required to double food production by 2050. Testing management strategies is commonly carried
out in the field. Such trials are costly and require quite a long time to produce consistent and reliable results. An alternative option to field trials would be the use of tested models. Models can run with ‘what-if’ scenarios depicting different types of field management. They are a less costly and faster alternative to field trials.
In contrast to some existing models, the SALTMED 2013 model is designed for general applications that include various
irrigation systems and water application strategies, water of different qualities, variety of crops and trees, different nitrogen based fertilizers and different soil types. The model can simulate up to 20 fields with different treatments, different crops, different
irrigation systems and management as well as different N-fertilizer applications. The SALTMED model has been tested
using field experiment data from Portugal, Italy, Denmark, Morocco, Egypt, Syria, Brazil and Iran. It successfully simulated soil moisture, salinity, nitrogen content, grain yield and total dry matter.
The model provides academics, professionals and extension services with a management tool for crops, soil, water and nitrogen fertilizers. This paper describes the processes, the equations of the model and summarizes the different applications and results obtained.

/pdf/integrated-management-tool-for-water-crop-soil-and-n-4xsapqn6k9.pdf

Integrated Management Tool for Water, Crop, Soil and N-Fertilizers: The Saltmed Model†

Since the salinity of irrigation water is a critical constraint to the production of certain vegetable crops, salinity has been considered as one of the most important factors of irrigation water. The objective of this study was to investigate the response of lettuce and Chinese cabbage to various salinity levels of irrigation water in greenhouse cultivation. A pot experiment was conducted with different salinities under a glasshouse condition in Korea. A completely randomized experimental design was used with three replications. The analysis results of crop growth and yield of lettuce and Chinese cabbage indicated that the factors that were more significantly affected by saline irrigation water were crop yields rather than crop components such as number of leaves, leaf length, and leaf width. In this study, the point of salt concentration during an increase in salinity levels of irrigation water (ECw) at which yield starts to decline was determined to be 0.9 and 1.5 dS/m for lettuce and Chinese cabbage, respectively. Furthermore, the present study demonstrated that the continuous irrigation of saline water under greenhouse conditions could lead to a significant increase in electric conductivity (ECe) level and Na+ concentration in soil, as well as Na+ concentration in leaves of crops.

/pdf/effects-of-irrigation-with-saline-water-on-crop-growth-and-29ack786ei.pdf

Effects of Irrigation with Saline Water on Crop Growth and Yield in Greenhouse Cultivation

Grafting pepper onto tolerant rootstocks: An environmental-friendly technique overcome water and salt stress

The present study investigates the impact of using saline water on pepper crop yield and the application of a numerical model in predicting soil moisture and relative yield under saline irrigation conditions. In the greenhouse experimental study conducted in Antalya, Turkey, the effects of different irrigation regimes with salinity treatments using a drip irrigation system were investigated for two pepper varieties. The irrigation regimes consisted of four irrigation treatments with four salinity levels in two cropping seasons—spring 2011 and autumn 2011. The numerical model SALTMED was used and calibrated using measured soil moisture of a control experiment run during spring 2011. After the calibration, the model was validated using other experimental treatments during spring 2011 and all the experimental treatments in autumn 2011, with appropriate salinity stress parameter π50 values which are calibrated versus the highest salinity treatments in the spring 2011 and autumn 2011 experiments. The predicted results show the ability of the model to reproduce the measured soil moisture at three soil layers 0–20, 20–40 and 40–60 cm. The predicted relative yield results are in good agreement with measured data. Although the numerical model SALTMED has been used in several studies in the past, this is the first study that illustrates the potential capacity of the model for use in managing greenhouse production. Copyright © 2015 John Wiley & Sons, Ltd.

/pdf/the-effect-of-saline-irrigation-water-on-the-yield-of-pepper-5fqu2h59zl.pdf

The Effect of Saline Irrigation Water on the Yield of Pepper: Experimental and Modelling Study

Effects of drip-irrigation regimes with saline water on pepper productivity and soil salinity under greenhouse conditions

The present study investigates the application SALTMED model in predication of dry matter, yield, soil moisture and soil salinity level of greenhouse pepper (Capsicum annuum) experiment from Antalya, Turkey. In the greenhouse experimental study, the effects of different irrigation regime with salinity treatments using drip irrigation system were investigated. Irrigation regimes consisted of four irrigation treatments with four salinity levels. SALTMED model was calibrated using soil moisture data of the control experiment. After the calibration, the model was validated using the other experimental treatments. Results show the ability of the model to reproduce the measured soil moisture at three soil layers 0-20 cm, 20-40 cm and 40-60 cm. The simulated results are also seen to capture the salinity level during irrigation in these soil layers. Preliminary results of total dry matter and yield are showing good agreement.

/pdf/saltmed-2013-model-application-using-greenhouse-experiment-3d8ee8p15i.pdf

Akin Tepe

Papers

The Effect of Saline Irrigation Water on the Yield of Pepper: Experimental and Modelling Study

Effects of drip-irrigation regimes with saline water on pepper productivity and soil salinity under greenhouse conditions

SALTMED 2013 model application using greenhouse experiment data from Turkey