Inorganic Fungicides (Phosphites) Instead of Organic Fungicides in Winter Wheat—Consequences for Nitrogen Fertilizer Productivity

نویسندگان

چکیده

Substitution of organic with inorganic fungicides (phosphites, Phi) does not change the efficiency fertilizer nitrogen (Nf) in winter wheat. This hypothesis was tested 2016/2017 and 2017/2018 growing seasons. A two-factorial experiment three phosphite variants (Cu–Phi, Mg–Phi, Cu/Mg) six plant protection methods (fungicides + Phi ⟶ reduced fungicide frequency phosphite). Grain yield decreased increasing phosphites instead fungicides. The decrease yields 3.6 t ha−1 favorable 1.1 dry 2017/2018. primary reason for a given season increased wheat infestation by pathogens. direct cause disturbances status after flowering on treatments predominance phosphites. thousand grain weight (TGW) responded negatively to application frequency. critical stage assessment pathogen pressure medium milk phase (BBCH 75). At this stage, indices SPAD leaf greenness together pathogens allowed reliable prediction both TGW yield. It can be concluded that do substitute limiting Moreover, significantly reduces Nf productivity.

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ژورنال

عنوان ژورنال: Agronomy

سال: 2023

ISSN: ['2156-3276', '0065-4663']

DOI: https://doi.org/10.3390/agronomy13030627