Status Determination

Plant and orchard (or vineyard) based determination of water and nutrient status, and remote and local sensing of water and nutrient status.

The ultimate goal of this activity is to produce a model of crop nutrient and water status. 'Status' reflects real-time crop conditions in relation to nutrients and water. Research inputs involve cooperative programs by participating principle investigators and their teams. The diagram below illustrates the interactions involved.

		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, Wang)

		Re-evaluate leaf & orchard sampling methods and "Critical Value" concept (Brown, Lampinen)

Monitoring water & nutrient fluxes in soil (Hopmans, Brown, Smart)