How to measure the leaching losses of nutrients in experimental field under any easy quick convenient method ?
Dear Sushanta,
The publication contained in the following link describes three methods to measuring leaching losses of nitrate and conducts comparisons among them:
Monitoring of Nitrate Leaching in Sandy Soils: Comparison of Three Methods
Lincoln Zotarelli, Johannes M. Scholberg*ý' Michael D. Dukes, and Rafael Mufioz-Carpena
Proper N fertilizer and irrigation management can reduce nitrate leaching while maintaining crop yield, which is critical to enhance the sustainability of vegetable production on soils with poor water and nutrient-holding capacities. This study evaluated different methods to measure nitrate leaching in mulched drip-irrigated zucchini, pepper, and tomato production systems. Fertigation rates were 145 and 217 kg N ha- 1 for zucchini; 192 and 288 kg N ha-3 for pepper; and 208 and
312 kg N ha- 1 for tomato. Irrigation was either applied at a fixed daily rate or based on threshold values of soil moisture sensors placed in production beds. Ceramic suction cup lysimeters, subsurface drainage lysimeters and soil cores were used to access the interactive effects of N rate and irrigation management on N leaching. Irrigation treatments and N rate interaction effects on N leaching were significant for all crops. Applying N rates in excess of standard recommendations increased
N leaching by 64, 59, and 32%, respectively, for pepper, tomato, and zucchini crops. Independent of the irrigation treatment or nitrogen rate, N leaching values measured from the ceramic cup lysimeter-based N leaching values were lower than the values from the drainage lysimeter and soil coring methods. However, overall nitrate concentration patterns were similar for all methods when the nitrate
concentration and leached volume were relatively low.
http://www.acclima.com/poc7/research/NitrateLeaching.pdf
hoping this will be helpful,
Rafik
Can you message me with what you have for equipment and what level of accuracy you need (i.e. screening or precise quantification). Also, are you looking for specific nutrients, or NPK plus Ca, Mg?
Havlik T.: Hydrometallurgy Principles and Applications, CRC Press, Cambridge, England, ISBN 978-1-4200-7044-6, 2008, pp.536
I mean N, P, K, Ca Mg losses. I do not have any equipment. How to estimate the losses manually.
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