Effect Leaching Management on the Salinity Changes in the Drip Irrigation System (A Case Study: Semnan)

آب و خاک

Article 3, Volume 32, Issue 5 - Serial Number 61, November 2018, Pages 879-890   

Document Type: Research Article

DOI: 10.22067/jsw.v32i5.71960

Authors

hossein dehghani^* ; Hamidreza Haji Agha Bozorgi; ali asghar ghaemi

Shiraz University

Abstract

Introduction: The main problem of salinity, in addition to reducing agricultural and horticulture products is the gradual decline of their cultivation area. Several factors such as climate and irrigation (precipitation, fraction of leaching), soil type and soil salinity, salinity of irrigation water, uniform distribution of the system and irrigation with saline water affects the soil salinity changes. Therefore, in irrigated agriculture, soil salinity should be reduced and controlled to an optimal level of the economic production. Leaching with proper irrigation management is one of the effective ways to reduce soil salinity.
Materials and Methods: The study was conducted during 2012-2013 in as pistachio garden located in the Safaeieh region of Semnan province. The garden was 100 ha and 2 ha of that was selected for this study with 10 years old pistachio trees equipped to subsurface drip irrigation system. The treatments of this study were three irrigation regimes; control (I1), Irrigation based on irrigation requirement (I2) and I2 plus leaching requirement (I3), three soil depth of 25, 50, and 75 cm from soil surface and time before and after irrigation. The drip line laterals include emitters with 2.26 lph flow rate was buried in 40 cm soil depth. Soil samples to evaluation salt concentration were collected from 25, 50, and 75 soil depth before and after irrigation. To study the impact of different irrigation regimes, soil depth and time (before and after irrigation) and also their bilateral impact a factorial design in randomize block was applied.
Results and Discussion: The results showed that ECe and SAR accumulation decreased after development, growth stage and continued to end growth stage. The results showed that I2 and I3 irrigation regimes were more effective in reducing the amount of sodium from the root zone and the I2 irrigation regime showed better performance in comparison to I3 irrigation regime. Regarding the amount of magnesium in the soil, the I2 irrigation regime was more successful than the I1 and I3 regimens. In I1 irrigation regime, the amount of magnesium at the end growth stage increased compared to the beginning growth stage. Significant decrease in ECe level at the end growth stage compared to the beginning growth stage belonged to the I2 irrigation regime, which suggests that I2 irrigation regime was more successful in ECe leaching during the period of pistachio growth, which attributed to the potential for leaching from the soil surface to the depths below the soil surface. The results showed that excessive water application under saline conditions for any reason, such as leaching not only does not have a beneficial effect on the removal of salts from the root zone, but also may lead to accumulation of salts and damage to the plant. The highest amount of calcium in the soil was recorded 98 days after the first irrigation under the I2 and I3 irrigation regimes which was 52.5 and 58.1 Meq/l, respectively. The lowest amount of this element The I1 and I2 regimens were 40.8 meq/l, respectively, which were recorded in 152 days after the first irrigation. In terms of SAR, the lowest value in the I2 regime was more noticeable than other irrigation regimes. The effects of soil depth of time after the first irrigation showed that there was no significant difference at the depth of 25 cm and 75 cm at the end growth stage compared with the valued recorded in beginning growth stage, but at a depth of 50 cm there was a significant reduction in ECe. The highest ECe value equaled to 14.5 dS/m was recorded at a depth of 75 cm in 98 days after first irrigation. In the I1 irrigation regime at all three depths of 25, 50 and in the I3 irrigation regime at a depth of 75 cm the amount of SAR at the end growth stage were not less than that in beginning growth stage, however, the reduction in SAR was recorded in the I2 irrigation regime at all three depths.
Conclusions: Irrigation regime I2 was successful to control the SAR in different soil depth compared to the other two irrigation regimes, which is very important for the next irrigation season to moderate the harmful effects on blossoms. Moreover, it is suggested that in a field, equipped with a subsurface drip irrigation system, leaching water at the end of the season by surface irrigation or heavy subsurface drip irrigation during the rainfall to leach out the accumulated salt to lower soil layers.

Keywords

Leaching management; Saline soils; SAR; Soil salts; Substrate drip

References

1- Aga Khani AS. 2005. Effect of salinity of irrigation water and soil leaching on wheat yield. Irrigation and Drainage Master's thesis, Faculty of Agriculture, Technology University of Isfahan. (In Persian with English abstract)

2- Alizadeh A. 1388. Drip irrigation (principles and operations). Second edition. Imam Reza University Press, 92-238. (In Persian)

3- Allen R.G., Pereira L.S., Raes D., and Smith M. 1998. Crop evapotranspiration: Guidelines for Computing Crop Water Requirements. FAO Irrigation and Drainage Paper 56. FAO, Rome, 300(9): D05109.

4- Ayers R.S., and Westcot D.W. 1985. Water quality for agriculture. Irrigation and Drainage. Food and Agriculture Organization of the United Nations. Rome, Italy, 29: 1-117.

5- Behbahanizadeh Rezaeian Z., Pazira E., Panahpour E., and Zohrabi N. 2017. Comparison of different methods of leaching of soluble salts from the profile of saline and sodium salts. Journal of Water Science and Engineering, 7(15): 79– 93. (In Persian with English abstract)

6- Corwin D.L., Rhoades J.D., and Simunek J. 2007. Leaching requirement for soil salinity control: steady-state versus transient models. Agricultural Water Management, 90(3): 165-180.

7- Cote C.M., Bristow K.L., and Ross P.J. 2000. Increasing the efficiency of solute leaching. Soil Science Society of America Journal, 43: 1100-1106.

8- Farshi A. A., Shariati M. H., Jarollahi R., Ghaemi M. H., Shabifar M., and Tolaei MM. 1997. Estimated water requirement major plants agricultural and horticultural of country. Soil and Water Research Institute, Publication of Agriculture Education in Karaj, 394p. (In Persian)

9- Feizi M. 1993. The effects of water quality and quantity on soil salinization of Rudasht Zone of Isfahan restrict. Journal of Soil and Water, 8: 16–34. (In Persian with English abstract)

10- Feyzi M. 1998. Investigating the effects of different salting water management on cotton yield. Agricultural Research Center, Esfahan, Final report, 1-18. (In Persian with English abstract)

11- Feizi M. 2012. Effect of water quality and management on soil chemical properties. Soil Research (Soil and Water Science), 27(2): 239–252. (In Persian with English abstract)

12- Flagella Z., Giuliani M. M., Rotunno T., Di Caterina R., and De Caro A. 2004. Effect of saline water on oil yield and quality of a high oleic sunflower (Helianthus annuus L.) hybrid. European Journal of Agronomy, 21: 267-272.

13- Ganjegunte G.K., Leinauer B., Schiavon M., and Serena M. 2013. Using electro-magnetic induction to determine soil salinity and sodicity in turf root zones. Agronomy Journal, 105: 836–844.

14- Garcia-Sanchez F., Carvajal M., Porras I., Botıa P., and Martınez V. 2003: Effects of salinity and rate of irrigation on yield, fruit quality and mineral composition of ‘Fino 49’ lemon. European Journal of Agronomy, 19: 427–437.

15- Ghassemzadeh Mojaveri F. 1990. Evaluation of irrigation systems of farms. Mashhad: Astan Quds Razavi. Bhnshr company, 329p. (In Persian)

16- Hosseini Nia M., Hasanpour F., Naghavi H., and Abbasi F. 2017. Comparative effects of chemical amendments on salt leaching from a saline-sodic soil in Kerman under laboratory condition. Journal of Soil Management and Sustainable, 7(2): 119– 134. (In Persian with English abstract)

17- Jones A., Panagos P., Barcelo S., Bouraoui F., Bosco C., Dewitte O., Gardi C., Hervas J., Hiederer R., and Jeffery S. 2012. The state of soil in Europe -a contribution of the JRC to the European environment agency’s environment state and outlook R- SOER 2010.

18- Kaya C., Higges D., and Kimak H. 2001. The effects of high salinity and supplementary Phosphorus and Potassium on physiology and Nutrition development of spinach. Bulgarian Journal of Plant Physiology, 27: 47-59.

19- Konukcu F., Gowing G.W., and Rose D.A. 2005. Dry Drainage: a sustainable solution to water logging and salinity problems in irrigation areas. Agricultural Water Management, 83(1): 1-12.

20- Kosari H. 2009. Evaluation of soil surface energy balance to estimation of evapotranspiration and its components in surface and sub-surface drip irrigation systems. Irrigation and Drainage Master's thesis, University of Tehran. (In Persian with English abstract)

21- Landi A. 1993. Investigating the effect of irrigation water quality and leaching ratio on drainage quality and distribution of salt in soil profile. Irrigation and Drainage Master's thesis, Faculty of Agriculture, Technology University of Isfahan (In Persian with English abstract)

22- Li F.H., and Keren R. 2009. Calcareous sodic soil reclamation as affected by corn stalk application and incubation: A laboratory study. Pedosphere, 19: 465-475.

23- Mostafazadeh-Fard B., Heidarpour M., Aghakhani A., and Feizi M. 2008. Effects of leaching on soil desalinization for wheat crop in an arid region. Plant Soil and Environment, 54(1), p.20.

24- Oron G., Demalach Y., Gillerman L., David I., and Rao V.P. 1999. Improved saline-water use under subsurface drip irrigation. Agricultural Water Management, 39: 19–33.

25- Rodrigues da Silveria K., Rosas Ribeiro M., Bezerra de Oliveira L., John Heck R., and Rodrigues da Silveira R. 2008. Gypsum-saturated water to reclaim alluvi saline-Sodic and Sodic soils. Scientia Agricola, 65: 69-76.

26- Sayyari N., Ghahraman B., and Davari K. 2007. Study of soil cations under substrate drip irrigation system (SDI) in Rafsanjan Pistachio garden with saline water. Science and Agriculture Industry, 21(1): 43-56. (In Persian with English abstract)

27- Schiavon M., Leinauer B., Serena M., Maier B., and Sallenave R. 2014. Plant growth regulator and soil surfactants’ effects on saline and deficit irrigated warm-season grasses: I. Turf quality and soil moisture. Crop Science, 54(6): 2815-2826.

28- Taheri M., Abbasi M., Mostafavi K., and Vahedi S. 2016. Patterns of soil salinity and sodium under surface and subsurface drip irrigation in olive trees. Journal of Water and Irrigation Engineering, 7(26): 127-141. (In Persian with English abstract)

29- Tόth G., Montanarella L., and Rusco E. 2008. Threats to soil quality in Europe. EUR 23438 EN. Institute for Environment and Sustainability, Land Management and Natural Hazards Unit, Office for the Official Publications of the European Communities, Luxembourg, 162p.

30- Wang S., Feng Q., Zhou Y., Mao X., Chen Y., and Xu H. 2017. Dynamic changes in water and salinity in saline-alkali soils after simulated irrigation and leaching. PloS one, 12(11), p.e0187536.