Spectral Response of Camelina (Camelina sativa (L.) Crantz) to Different Nitrogen Fertilization Regimes under Mediterranean Conditions

نویسندگان

چکیده

Knowledge about the spectral response of camelina under different regimes nitrogen (N) fertilization is very scarce. Therefore, 2-year open-field trials were carried out in 2021 and 2022 growing seasons with aim evaluating spring to four N by using remote (UAV) proximal (leaf-clip Dualex) sensing techniques. The tested treatments were: (i) control: no application (T0); (ii) top dressing: 60 kg ha−1 before stem elongation (T1); basal at sowing (T2); + dressing combination: (T3). Camelina seed yield use efficiency strongly affected regimes, best results obtained T2. A reduction plant development was detected 2022, probably due rise air temperatures. significant effect both season observed on photosynthetic pigments content T1 highest values 2022. oil achieved T1, while protein increased increasing N, T3. Positive correlations among several vegetation indices through UAV flights (NDVI, MRS705, FGCC) yield, as well between FGCC leaf concentration. Overall, these findings demonstrate feasibility utilizing techniques from UAVs for predicting camelina.

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ژورنال

عنوان ژورنال: Agronomy

سال: 2023

ISSN: ['2156-3276', '0065-4663']

DOI: https://doi.org/10.3390/agronomy13061539