{"id":166863,"date":"2021-01-29T17:07:08","date_gmt":"2021-01-29T14:07:08","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/increasing-soil-ph-reduces-fertilizer-derived-nitrous-oxide-emissions\/"},"modified":"2021-01-29T17:07:08","modified_gmt":"2021-01-29T14:07:08","slug":"increasing-soil-ph-reduces-fertilizer-derived-nitrous-oxide-emissions","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/increasing-soil-ph-reduces-fertilizer-derived-nitrous-oxide-emissions\/","title":{"rendered":"#Increasing soil pH reduces fertilizer-derived nitrous oxide emissions"},"content":{"rendered":"

“#Increasing soil pH reduces fertilizer-derived nitrous oxide emissions<\/strong>”<\/p>\n

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\n Experimental plots with greenhouse gas measurement chambers in Teagasc Johnstown Castle Research Centre. Credit: Teagasc
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A new scientific paper from Teagasc has shown that getting soil pH right through a liming program can significantly reduce emissions of nitrous oxide (N2<\/sub>O), a potent greenhouse gas. The paper from researchers at the Teagasc Environment, Soils and Land-Use Department in Johnstown Castle, County Wexford has just been published in the scientific journal Agriculture, Ecosystems and Environment<\/i> (AGEE). It concludes that increasing soil pH reduces fertilizer derived N2<\/sub>O emissions in intensively managed temperate grassland.<\/p>\n


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Head of the Teagasc Environment Research Department, Dr. Karl Richards said: “The paper shows that there are reduced N2<\/sub>O emissions from fertilizer app<\/a>lied to higher pH soils, where the pH is in the recommended agronomic range. Farmers that can improve soil pH for agronomic benefits, can also reduce N2<\/sub>O emissions. This represents a win-win for the farmer and the environment.”<\/p>\n

Soil pH is general<\/a>ly considered a master variable, controlling a wide range of physical, chemical and biological properties, including a significant effect on microbial processes responsible for production and consumption of N2<\/sub>O. Senior Research officer at Johnstown Castle, Dr. David Wall stated that “using an existing long-term intensive grassland liming and P trial, this research investigated the effect of longer-term lime and P management and their interaction on N2<\/sub>O emissions and grassland productivity.<\/p>\n

Postdoc Researcher with Teagasc, Ognjen (Oggy) Zurovec outlined the main findings: “We found that a long-term increase in soil pH as a result of liming significantly decreased N2<\/sub>O emissions over 12-month measurement period. In addition, keeping the soil pH and P at the optimum level has the potential to further reduce N2<\/sub>O emissions due to higher grass N uptake through increased yields. This means that the application of good farming practices has considerable N2<\/sub>O mitigation potential in temperate grasslands.”<\/p>\n

The results showed that applying 5 tons of lime per hectare every three to four years increased soil pH from 5.1 to 6.9 and reduced N2<\/sub>O emissions by 39%. The study estimated that the increase in soil pH of grasslands in Ireland over the last 12 years potentially reduced national N2<\/sub>O emissions by 95,000 T CO2<\/sub>-eq yr\u22121<\/sup>, with potential for a further reduction by up to 254,000 T CO2<\/sub>-eq yr\u22121<\/sup> if all the remaining acidic soils are brought up to optimal pH.<\/p>\n\n

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Company outlines steps to reduce ammonia emissions\n <\/p><\/div>\n

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\n More information:<\/strong>
\n Ognjen \u017durovec et al. Increasing soil pH reduces fertiliser derived N2O emissions in intensively managed temperate grassland, Agriculture, Ecosystems & Environment<\/i> (2021). DOI: 10.1016\/j.agee.2021.107319<\/a><\/p><\/div>\n

Provided by
\n Teagasc<\/p>\n

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Citation<\/strong>:
\n Increasing soil pH reduces fertilizer-derived nitrous oxide emissions (2021, January 29)
\n retrieved 30 January 2021
\n from https:\/\/phys.org\/news<\/a>\/2021-01-soil-ph-fertilizer-derived-nitrous-oxide.html<\/p>\n

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