Remote sensing of rice phenology and physiology via absorption coefficient derived from unmanned aerial vehicle imaging

Peng, Y.; Solovchenko, A.; Zhang, C.; Shurygin, B.; Liu, X.; Wu, X.; Gong, Y.; Fang, S.; Gitelson, A.

Авторы: Peng Yi, Solovchenko Alexei, Zhang Chaoran, Shurygin Boris, Liu Xiaojuan, Wu Xianting, Gong Yan, Fang Shenghui, Gitelson Anatoly
Журнал: Precision Agriculture
Год издания: 2023
Издательство: Springer Nature
Местоположение издательства: Switzerland
DOI: 10.1007/s11119-023-10068-y
Аннотация: Rice (Oryza sativa L.) is the most important staple crop feeding more than half of theworld’s population. Extensive effort currently undertaken to develop new and improveexisting rice cultivars calls for high-throughput, ideally non-invasive methods for monitoringthe phenology and performance of rice plants in the field. We report on the resultsof systematic application of canopy-level reflectance-derived absorption coefficients to themonitoring of rice stands with unmanned aerial vehicle multispectral sensors. The proposedapproach was tested in the field on 39 rice varieties. It was capable of assessing ricephenology and physiology traits such as canopy absorption in different spectral regions,biomass productivity, panicle weight and, eventually, crop yield. Importantly, the proposedapproach reflected the pigment transformation patterns accompanying the progression ofrice phenological phases. Based on this information, our results showed it was possibleto resolve with confidence the three key phases of rice phenology regardless of cultivarspecificvariation in stand optical properties. The absorption of photosynthetically activeradiation (αPAR) was significantly related to rice final yield. To the best of our knowledge,for the first time the absorption coefficients at blue and red bands were used to indicatepanicle ripening, thus estimating panicle biomass accurately in the tested 39 varieties withthe determination coefficient above 0.8. We argue that the proposed approach gives valuableinsights into the rice phenology and physiology in the field, so it will become a usefulcomplement to the traditional plant monitoring techniques welcomed by plant physiologistsand practitioners, especially those involving in accelerated rice breeding.
Добавил в систему: Соловченко Алексей Евгеньевич

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Remote sensing of rice phenology and physiology via absorption coefficient derived from unmanned aerial vehicle imagingстатья

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