WATER USE EFFICIENCY AND DRY MATTER ACCUMULATION IN FERTIGATED POTATOES

Improving water use efficiency (WUE) in irrigated agriculture is widely recognized as critical to reduce nitrogen leaching particularly in fertigated crop systems with high inputs of added organic matter.
Nowadays, the increasing precision of fertigation techniques allows management of both water and nutrient supply on the basis of daily crop dry matter (DM) accumulation and partitioning to plant organs.
In the frame of the EU project FertOrgaNic, a three year field experiment was carried out on potatoes in six European countries to assess WUE, DM accumulation and DM partitioning of two fertigation strategies (Static and Dynamic) in comparison with a Non-Irrigated/Non-Fertilised (NINF) and an Irrigated/Non-Fertilised (INF) control.
Static and Dynamic received at least 50% of N requirements from organic fertilisers.
WUE, DM accumulation and DM partitioning curves were calculated to assess difference between treatments and to verify the effectiveness and the applicability of the fertigation strategies applied.

V International Symposium on Irrigation of Horticultural Crops

A. Battilani, F.L. Plauborg, S. Hansen, F. Dolezal, W. Mazurczyk, J. Bizik, J. Coutinho

fertigation, efficiency indexes, DSS, model algorithms, FertOrgaNic

https://doi.org/10.17660/ActaHortic.2008.792.6