1a.Objectives (from AD-416):
Physiological basis for optimal nitrogen availability in potato rootzone during the growing season to enhance uptake efficiency and optimal partitioning into different plant parts.
1b.Approach (from AD-416):
Field experiments will be conducted using different potato varieties under different irrigation and nitrogen management. The dynamics of nitrogen uptake and partitioning into different plant parts will also be investigate using 15N labeled fertilizer. In addition to evaluation of tuber yield and quality responses to different nitrogen management practices, soil and plant growth parameters will be measured to assist field validation of potato growth simulation model.
Due to sequester and recision cuts, this SCA was unfunded this FY. Project is on hold.
This project contributes to in-house Objective 2C: "Validate the ARS Potato Growth Simulation Model for the irrigated inland Pacific Northwest region".