Lack of inhibitory effects of 1-Octyne and PTIO on ammonia oxidizers, nitrite oxidizers, and nitrate formation in acidic paddy soils

Applied Soil Ecology, Год журнала: 2024, Номер 203, С. 105673 - 105673

Опубликована: Окт. 3, 2024

Язык: Английский

Exploring Suitable Nitrification Inhibitor in an Intensively Cultivated Greenhouse Soil and Its Effect on the Abundance and Community of Soil Ammonia Oxidizers

Agronomy, Год журнала: 2025, Номер 15(2), С. 255 - 255

Опубликована: Янв. 21, 2025

The application of nitrification inhibitors (NIs) is an effective way to reduce soil nitrogen (N) losses and increase crop N uptake. Yet, the efficacy NIs commonly varies with dosages, systems environmental conditions. Hence, clarifying suitable type dosage extremely important for structuring best management regime at a regional scale. Here, based on microcosm experiments, we evaluated influence three widely used [Dicyandiamide, DCD; 3,4-Dimethylpyrazole phosphate, DMPP; 2-chloro-6-(trichloromethyl) pyridine, Nitrapyrin] activity intensively cultivated greenhouse soil. results showed that both DCD DMPP imposed transient inhibition (less than five days) regardless dosages applied, and, contrary, Nitrapyrin presented persistent suppression, longer duration action by higher dosage. Accordingly, incorporation 2% applied rate (w/w) recommendable local intensive production. Further, assessed various (0%, 0.25%, 0.5%, 5%) abundance community groups ammonia oxidizers [i.e., ammonia-oxidizing archaea (AOA), bacteria (AOB) completely (Comammox Nitrospira)] qPCR high-throughput amplicon sequencing. strongly lowered AOB Comammox Nitrospira abundances their richness even lowest also significantly altered structure all tested oxidizers, average relative some major members (i.e., Nitrososphaerales Clade Nitrososphaera, A, Nitrosospira briensis Clade, multiformis A.2 A-associated) obviously responded incorporation. Overall, our findings indicated were more sensitive as compared AOA. obtained here highlight importance optimizing fertilization in vegetable inhibits probably suppressing level herein.

Язык: Английский

Abundance, Diversity, and Community Composition of Comammox Nitrospira in Tea (Camellia Sinensis) Plantation Soils

Journal of soil science and plant nutrition, Год журнала: 2024, Номер unknown

Опубликована: Окт. 21, 2024

Язык: Английский