USING UAV-DERIVED PLANT HEIGHT AS AN ESTIMATOR FOR BIOMASS AND N-UPTAKE

The TephATA database comprises morphological, geochemical, and chronological data of volcanic ash layers from the Atacama Desert. The dataset provides a basis for identifying the same volcanic ash layers in different sediment deposits and to determine their stratigraphic and chronological relationships. Known ages of volcanic eruptions can be transferred among equivalent ash layers, which allows dating of sediments. Also ash dispersal and the volcanic history of a region can be studied.

Leaf water potential was at certain thresholds, depending on soil type, water treatment, and weather conditions. In rainfed plots, the lower water availability in the stony soil resulted in fewer roots with a higher root tissue conductance than the silty soil. In the silty soil, higher stress in the rainfed soil led to more roots with a lower root tissue conductance than in the irrigated plot. Crop responses to water stress can be opposite, depending on soil water conditions that are compared.