Citas bibligráficas
Ramirez, M., (2024). Pérdidas de nitrógeno por volatilización usando diferentes fuentes nitrogenadas en un entisol en La Molina [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/6428
Ramirez, M., Pérdidas de nitrógeno por volatilización usando diferentes fuentes nitrogenadas en un entisol en La Molina []. PE: Universidad Nacional Agraria La Molina; 2024. https://hdl.handle.net/20.500.12996/6428
@misc{renati/1114020,
title = "Pérdidas de nitrógeno por volatilización usando diferentes fuentes nitrogenadas en un entisol en La Molina",
author = "Ramirez Rivera, Mijail Boris",
publisher = "Universidad Nacional Agraria La Molina",
year = "2024"
}
Volatilization is one of the main forms of nitrogen loss in ammonia fertilizers, significantly reducing their efficiency. The intensity of this loss is mainly affected by the pH of the soil. Therefore, this work aims to study the volatilization of nitrogen from different nitrogen sources in an entisol in La Molina, Peru. The experiment was carried out in 2022 in a slightly alkaline entisol (pH: 7.78) and with a low organic matter content. The measurements were made during three weeks where they presented an average temperature of 14.9°C. To quantify nitrogen lost by volatilization, it was measured by means of static semi-open collectors on days 1, 2, 3, 4, 5, 6, 7, 10, 14, 21 after the first fertilization (90 kg of N/ha). 3 nitrogen fertilizers were evaluated: urea, ammonium sulfate and urea + NBPT inhibitor. Nitrogen losses were highest for urea with 15.64% nitrogen applied, followed by ammonium sulfate with 11.95%. Urea + NBPT had the lowest nitrogen loss with 5.96%, reducing urea volatilization by 61.9%. The volatilization values for urea are not as high as in other jobs due to the low temperature and low organic matter content that reduce urease activity. In the case of ammonium sulphate, it presented relatively high values due to the basic pH of the soil. Finally, the low volatilization values for the treatment of Urea + NBPT inhibitor are due to the fact that suitable conditions were presented for greater stability in the soil (basic soil pH and low temperatures).
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