Effect of organic matter and hydrogel application on nitrate leaching in a turfgrass crop: a simulation study using HYDRUS
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Other documents of the author: Martin del Campo, Miguel Angel; Esteller, María V.; Morell, Ignacio; Expósito, José L.; Bandenay, Gladys L.; Morales Casique, Eric
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https://doi.org/10.1007/s11368-020-02847-1 |
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Title
Effect of organic matter and hydrogel application on nitrate leaching in a turfgrass crop: a simulation study using HYDRUSAuthor (s)
Date
2021-01-07Publisher
SpringerISSN
1439-0108; 1614-7480Bibliographic citation
Martin del Campo, M.A., Esteller, M.V., Morell, I. et al. Effect of organic matter and hydrogel application on nitrate leaching in a turfgrass crop: a simulation study using HYDRUS. J Soils Sediments 21, 1190–1205 (2021). https://doi.org/10.1007/s11368-020-02847-1Type
info:eu-repo/semantics/articlePublisher version
https://link.springer.com/article/10.1007/s11368-020-02847-1Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
Abstract
Purpose The intensive cultivation of turfgrass requires a high quantity of water and fertilizer. The fertilizers can leach and reach
groundwater or be transported by run-off to water surface. It is necessary ... [+]
Abstract
Purpose The intensive cultivation of turfgrass requires a high quantity of water and fertilizer. The fertilizers can leach and reach
groundwater or be transported by run-off to water surface. It is necessary to improve irrigation and fertilization techniques to
guarantee water and fertilizer optimal use and avoid contamination. The objectives were to analyze water flow and nitrate
transport using the HYDRUS-1D and explore the effect of organic matter and hydrogel on the nitrate leaching.
Materials and methods The experimental site was divided into 4 plots, each with an approximate area of 40 m2 and a volume of
10 m3
. The substrate is composed of sand, which is superimposed on a gravel layer where drainage pipes are installed to collect
the leachates. The plots were constructed with different amendments in order to evaluate their influence on water flow and
contaminant transport. The plot 1 contains organic matter (OM) and hydrogel (HG). The plot 2 contains OM. The plot 3 was
constructed with only HG and the plot 4 with only sand.
Results and discussion The results’ simulation indicated that the plot P1 retained water and, accordingly, retained the nitrate
leached (2% of total applied nitrogen). The plot P4 drained a greater volume of water and nitrate leached (12% of total applied
nitrogen). The greatest differences between the predicted and observed data occurred after 650 h, which appears to confirm the
difficulty of modeling relatively long time periods. During this period, there may be changes in the hydraulic parameters that
affect water flow. The simulations of nitrate transport indicated that the model partially represents the observed data. This may be
due to aspects not considered in the model, such as moisture retention, piston flow, and preferential flow, which favor the
leaching of more or less nitrates.
Conclusions The use of hydrogel appears to be a good option for controlling leaching and, therefore, can be recommended, for
example, in intensive crop fields or greenhouse crops. [-]
Is part of
Journal of Soils and Sediments volume 21, pages1190–1205(2021)Rights
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