Effects of poor quality irrigation waters on the nutrient leaching and groundwater quality from sandy soil

Jalali, Mohsen; Merrikhpour, Hajar

doi:10.1007/s00254-007-0735-5

Cited by 42 publications

(17 citation statements)

References 32 publications

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“…Conversely, in both years, exchangeable Ca and Mg showed a significant decrease in the SW treatment compared with FW. These results are in agreement with those reported by Jalali and Merikhpour (). They found that the addition of poor‐quality water resulted in an increase of exchangeable Na on the exchange complex at the expense of exchangeable Ca and Mg.…”

Section: Resultssupporting

confidence: 94%

Effects of Irrigation Volume and Saline Water On Maize Yield and Soil in Southern Italy

Leogrande

Vitti

Lopedota

et al. 2016

Irrigation and Drainage

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A field experiment was carried out in southern Italy to investigate the effects of irrigation and salinity on a maize crop and soil properties. The experiment was laid out comparing different irrigation rates (I1, I2, I3—re‐establishing 50, 75 and 100% of the calculated maximum evapotranspiration) and water quality (FW, fresh water and SW, saline water). Grain yield was significantly greater by 60% in 2008 than in 2010. No significant difference was shown for grain yield between the irrigation treatments, whereas water productivity decreased significantly with increasing irrigation rates. Irrigation with saline water did not significantly reduce grain yield compared with fresh water, but it improved grain quality with higher protein content (9.1%) and lower grain moisture percentage (13.3%). Saline water determined a significant increase of saturated soil paste extract Na, ECe, SAR, some exchangeable cations and ESP compared with FW in both years. Furthermore, at the end of the experiment these parameters were lower than those at the end of the first maize crop. Lastly, in the saline treatment, at the end of the trial, the ECe and ESP values were below the critical threshold for soil salinization and/or sodification. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Resultssupporting

confidence: 94%

Effects of Irrigation Volume and Saline Water On Maize Yield and Soil in Southern Italy

Leogrande

Vitti

Lopedota

et al. 2016

Irrigation and Drainage

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“…Besides the concentration of solution K + and the type of clay minerals present in the soil, K + release from clay minerals also depends on the concentration of other cations especially Ca 2+ , Mg 2+ , and Na + . High concentrations of Ca 2+ , Mg 2+ , and Na + in irrigation water lead to K + desorption and leaching (Jalali and Merrikhpour, 2008). The desorbed K + can easily leach and even be lost from the soil profile.…”

Section: K + and Na + Dynamics In Soilmentioning

confidence: 99%

Potassium–sodium interactions in soil and plant under saline‐sodic conditions

Wakeel

2013

Z. Pflanzenernähr. Bodenk.

183

104

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About 7% of the total land around the globe is salt-affected causing a great loss to agriculture. Salt stress refers to the excessive amount of soluble salts in the root zone which induce osmotic stress and ion toxicity in the growing plant. Among toxic ions, sodium (Na + ) has the most adverse effects on plant growth by its detrimental influence on plant metabolism in inhibiting enzyme activities. An optimal potassium (K + ) : Na + ratio is vital to activate enzymatic reactions in the cytoplasm necessary for maintenance of plant growth and yield development. Although most soils have adequate amounts of K + , in many soils available K + has become insufficient because of large amounts of K + removal by high-yielding crops. This problem is exacerbated under sodic or saline-sodic soil conditions as a consequence of K + -Na + antagonism. Here K + uptake by plants is severely affected by the presence of Na + in the nutrient medium. Due to its similar physicochemical properties, Na + competes with K + in plant uptake specifically through high-affinity potassium transporters (HKTs) and nonselective cation channels (NSCCs). Membrane depolarization caused by Na + makes it difficult for K + to be taken up by K + inward-rectifying channels (KIRs) and increases K + leakage from the cell by activating potassium outward-rectifying channels (KORs). Minimizing Na + uptake and preventing K + losses from the cell may help to maintain a K + : Na + ratio optimum for plant metabolism in the cytoplasm under salt-stress conditions. It would seem a reasonable assumption therefore that an increase in the concentration of K + in salt-affected soils may support enhanced K + uptake and reduce Na + influx via HKTs and NCCSs. Although very useful information is available regarding K + -Na + homeostasis indicating their antagonistic effect in plants, current knowledge in applied research is still inadequate to recommend application of potassium fertilizers to alleviate Na + stress in plants under sodic and saline-sodic conditions. Nevertheless some encouraging results regarding alleviation of Na + stress by potassium fertilization provide the motivation for conducting further studies to improve our understanding and perspectives for potassium fertilization in sodic and saline-sodic environments. : Exogenously supplied compatible solutes rapidly ameliorate NaCl-induced potassium efflux from barley roots. : Loss of the AKT2/3 potassium channel affects sugar loading into the phloem of Arabidopsis. Planta 216, 334-344.Demidchik, V., Maathuis, F. J. M. (2007): Physiological roles of nonselective cation channels in plants: from salt stress to signaling and development. New Phytol. 175, 387-404. Demidchik, V., Tester, M. (2002): Sodium fluxes through nonselective cation channels in the plasma membrane of protoplasts from Arabidopsis roots. Plant Physiol. 128, 379-387. Demidchik, V., Shabala, S. N., Coutts, K. B., Tester, M. A., Davies, J. M. (2003): Free oxygen radicals regulate plasma membrane Ca 2+ and K + -permeable channels in plant root ce...

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“…Irrigation with water with high concentrations of Ca, Mg, and Na leads to an increase in K desorption and leaching (Meiri et al, 1984;Jalali and Merrikhpour, 2008). This K may be more readily available to plant roots, but it is also easily leached down beyond the root zone.…”

Section: Introductionmentioning

confidence: 96%

Effect of sodium and magnesium on kinetics of potassium release in some calcareous soils of western Iran

Jalali

2008

Geoderma

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Effects of poor quality irrigation waters on the nutrient leaching and groundwater quality from sandy soil

Cited by 42 publications

References 32 publications

Effects of Irrigation Volume and Saline Water On Maize Yield and Soil in Southern Italy

Effects of Irrigation Volume and Saline Water On Maize Yield and Soil in Southern Italy

Potassium–sodium interactions in soil and plant under saline‐sodic conditions

Effect of sodium and magnesium on kinetics of potassium release in some calcareous soils of western Iran

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