Cover crops can increase ammonia volatilization and reduce the efficacy of urease inhibitors

Article Soil Science

Seasonal changes of soil carbon fractions and enzyme activities in response to winter cover crops under long-term rotation and tillage systems

Jasdeep Singh et al.

Summary: This study evaluated the effects of different crop rotations and winter cover crop managements on soil biochemical properties. The results showed that cover crops significantly enhanced enzyme activities, while tillage systems and rotation treatments also had impacts on soil microbial properties.

EUROPEAN JOURNAL OF SOIL SCIENCE (2021)

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Article Agronomy

Cover crop enzyme activities and resultant soil ammonium concentrations under different tillage systems

Clayton J. Nevins et al.

Summary: The study found that cover crops and tillage practices significantly impact the dynamics and amounts of enzyme activity, as well as nitrogen cycling in the soil. Additionally, cover crops have the potential to stimulate residue enzyme activity, suppress nitrogen release, and increase nitrogen immobilization in the soil, but improper levels of cover crop biomass accumulation may lead to nitrogen immobilization. Farmers should carefully consider the optimal winter biomass accumulation levels of cover crops to avoid potential issues with nitrogen immobilization.

EUROPEAN JOURNAL OF AGRONOMY (2021)

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Review Environmental Sciences

Improving the efficiency of urea-based fertilization leading to reduction in ammonia emission

Marta Klimczyk et al.

Summary: The addition of urease inhibitor NBPT to urea fertilizers can reduce ammonia emissions, while nitrification inhibitors may lead to an increase in ammonia emission. Factors such as dose and date of application, method of application, type of soil and pH, as well as atmospheric conditions, also have an impact on ammonia emissions.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

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Article Soil Science