Quantification of nitrogen leaching losses by paddy cultivation under controlled and continual runoff conditions

MPGNM Palliyaguru, CM Navaratne, D.D. Wickramasinghe, C.M. Nanayakkara

Abstract


In Asia, paddy is an important food crop that requires a high level of nitrogen, which is provided by straight chemical fertilizers that contribute a single nutrient, mainly urea. A study was conducted to quantify the leaching loss of nitrogen (as NO3--N) under two water management practices: controlled runoff and continual runoff in paddy cultivation at Low Country Intermediate Zone, Sri Lanka from 2015 to 2016 for four consecutive cropping seasons. Urea (N 46%) was applied as a sole source of Nitrogen at the rate of 225 kg ha-1. A randomized complete block design was employed with triplicates by two factors and two levels (cropping seasons; Yala, Maha, gradients; upper, lower). Lysimeters were arranged to collect leached water. The leachate from the study plots was collected weekly throughout the cropping period and the total amount of leached NO3--N for each cropping season was quantified. The leaching losses of NO3--N accounted under controlled runoff and continual runoff conditions were 8.6 kg ha-1 and 3.0 kg ha-1 respectively throughout the cropping period. It contributed to 8% and 3% of Nitrogen out of the total amount of applied N fertilizers in the same order. The water management practices and gradient effects were significant with respect to nitrogen leaching losses from paddy fields while cropping season had no effect on nitrogen leaching. A significant amount of nitrogen leaching losses could occur under the root zone, even though a controlled runoff situation posing possible threats of surface and groundwater pollution.

Keywords: Nitrogen leaching, chemical fertilizer, paddy, rice.

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References


Abeygunawardane AWGN, Dayawansa NDK, Pathmarajha S. 2011. Socioeconomic implications of water pollution in an urban environment: A case study in Meda ela catchment, Kandy, Sri Lanka. Tropical Agricultural Research 22 (4): 374-383.

https://doi.org/10.4038/tar. v22i4.3788.

Alam MS, Khanam M, Rahman MM. 2023. Environment-friendly nitrogen management practices in wetland paddy cultivation. Frontiers in Sustainable Food System (7): 1-19.

https://doi.org/10.3389/fsufs.2023.1020570.

Anthony DMG. 2003. Nitrogen use efficiency/ of crop plants: Physiological constraints upon Nnitrogen absorption. Critical reviews in Plant Science 22(5): 453-470.

https://doi.org/10.1080/07352680390243512.

APHA 2000. Standard methods for the analysis of water and wastewater. 15th edition, American public health association and water pollution control federation, Washington DC, 12-56.

AQUASTAT 2012. FAO’s global Information System on Water and Agriculture. Food and Agriculture organization of the United nations, Italy.

Carroll PV, Claudia U, Deborah LA. 2023. Phosphorus acquisition and use: Critical adaptation by plants for securing a non-renewable resource. New Phytologist 157 (3): 423-447.

https://doi.org/10.1046/j.1469-8137.2003.00695.x.

CBSL. 2020. Central bank of Sri Lanka, annual report. central bank, Colombo, Sri Lanka.

Choudhury ATMA, Kennedy IR. 2005. Nitrogen fertilizer losses from rice soil and control of environmental pollution problems. Communication in Plant Science and Plant Analysis 36: 1625-1639. https://doi.org/10.1081/CSS-200059104.

Fageria NK. 2007. Yield physiology of rice. Journal of Plant Nutrition 30: 843–879.

https://doi.org/10.1080/15226510701374831.

Glass ADM. 2003. Nitrogen use efficiency of crop plants: Physiological constraints upon nitrogen absorption. Critical reviews in plant science 22(5): 453-470.

https://doi.org/10.1080/07352680390243512.

Hashim MM, Yusop MK, Othman R, Wahid SA. 2015. Characterization of Nitrogen Uptake Pattern in Malaysian Rice MR219 at Different Growth Stages Using 15N Isotope. Rice Science 22(5): 250-254; https://doi.org/10.1016/j.rsci.2015.09.005.

Holcomb MK. 2010. Quantifying the water footprint: Growing crops sustainably in Northwest India., School of Environmental and Natural Resources: Ohio State University (unpublished thesis).

Illeperuma OA. 2000. Environmental pollution in Sri Lanka: A Review. Journal of the National Science Foundation of Sri Lanka 28(4): 301-325.

https://doi.org/10.4038/jnsfsr.v28i4.2644.

Iqbal MT. 2011. Nitrogen leaching from paddy fields under different fertilization rates. Malaysian Journal of soil science 15: 101-114.

IRRI, 2015. Steps to successful rice production. International rice research institute, Metro Manila, Philippines.

Liu X, Wang H, Zhou J, Hu F, Zhu D, Chen Z and Liu Y. 2016. Effect of N frtilization pattern on rice yield, N use efficiency and fertilizer-N fate in the Yangtze river basin, China. Plos One 11(11): 1-20; https://doi.org/10.1371/journal.pone.0166002.

Mapa RB, Dassanayake AR, Nayakekorale HB. 2005. Soils of the intermediate zone of Sri Lanka. Vishva Lanka publishers, Sri Lanka.

Meng F, Olesen JE, Sun X, Wu W. 2014. Inorganic nitrogen leaching from organic and conventional rice production on a newly claimed calciustoll in Central Asia. Plos One 9(5): 1-10. https://doi.org/10.1371/journal.pone.0098138.

Piyasiri S. 2009. Surface water, its status, and management. Economic review 23-31.

Rice Almanac. 2002. International rice research institute, Los Banos, Philippines.

Suprapti H, Mawardi M, Shiddieq D. 2010. Nitrogen transport and distribution on paddy rice soil under water-efficient irrigation method. International Seminar of ICID, Yogjakarta.

Wang J, Wang D, Zhang G, Wang Y, Wang C, Teng Y, Christie P. 2014. Nitrogen and phosphorus leaching losses from intensively managed paddy fields with straw retention. Agricultural water management 141: 66-73.

https://doi.org/ 10.1016/j.agwat.2014.04.008.

Yan X, Wei ZQ, Hong QQ, Lu ZH, Wu JF. 2017. Phosphorus fractions and sorption characteristics in subtropical paddy soil as influenced by fertilizer sources. Geoderma 295: 80-85. https://doi.org/10.1016/j.geoderma.2017.02.012.

Zhang Q, Yang Z, Zhang H, Jun Yi J. 2012. Recovery efficiency and loss of 15N-labelled urea in a rice–soil system in the upper reaches of the yellow river basin. Agriculture Ecosystems and Environment 158: 118-126. https://doi.org/10.1016/j.agee.2012.06.003.

Zhu JG, Han Y, Liu G, Zhang YL, Shao XH. 2000. Nitrogen in percolation water in paddy fields with a rice/wheat rotation. Nutrient Cycling in Agroecosystems 57: 75-82.

https://doi.org/10.1023/A:1009712404335.


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