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The first three seasons of field sampling have been completed. Nutrient dynamics in fruiting and non-fruiting leaves suggests that leaves of fruiting spurs may exhibit nutrient deficiencies when non-fruiting leaves on the same tree may have adequate leaf concentrations. (Figure 1).
Results from 2010 leaf analysis for the month of May suggest that leaf samples from fruiting branches have a better relationship with yield than samples from non-fruiting branches, and leaves from the lower canopy have a better relationship with yield than leaves from the top of the branches for the...
This component of the SCRI project allows the systematic study of the interaction between fertility and water management in almonds. Almond research conducted by Bruce Lampinen has demonstrated a substantial influence of water management on tree nitrogen nutrition.
Beta development of web-based decision support toolkit "NutMan" Iterative validation and improvement of models and tools Beta-development of a web-based decision-support toolkit NutMan under control and deficit conditions, and iteratively testing to refine and validate models and tools.
Evaluate spectral measurements/correlate to crop status (Whiting, Lampinen, Slaughter, Upadhayaya) Relate ETa to plant water status (Shackel, Smart, Sanden) Modeling crop nutrient & water demand Climate/phenology based yield modeling (Whiting, Ustin) N & water modeling in pecan & almond (Sammis, Wan...
Affiliation Investigator Research Programs Patrick Brown, Professor of Plant Nutrition, Department of Plant Sciences, University of California, Davis, CA Crop Nutrient Status & Demand Jan Hopmans, Associate Dean and Professor, Department of Land, Air and Water Resources, University of California, Da...
Fig. 1. Image from NDVI time series Orchard-level NDVI image from a 2008 time series in a study orchard is shown in Fig. 1. The strong variation in canopy size and closure, as an indicator of vigor is demonstrated in Fig. 2.
Fig. 1. Compilation of remotely sensed data mapsOur goal in model development is to produce novel tools for multiyear grower planning to optimize the use of their resources, and for broader uses, such as regional planning and market projections.
