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IDHA Chelates as a Micronutrient Source for Green Bean and Tomato in Fertigation and Hydroponics

^a Dep. of Agricultural Chemistry, Univ. Autónoma, 28049 Madrid, Spain
^b Dep. of Vegetal Production, Univ. de Almería, 04120 Almería, Spain

View larger version (11K): [in this window] [in a new window]   Fig. 1. Chelating agents described in the text.

View larger version (76K): [in this window] [in a new window]   Fig. 2. Visual aspect of green bean plants development in the experimental greenhouse of the Universidad Autónoma during 2006, after 15 d of treatment.

View larger version (62K): [in this window] [in a new window]   Fig. 3. Visual aspect of the green bean plants 39 d after the beginning of the treatments. Ethylene diamine tetraacetic acid (EDTA) treated plants suffer from fungus infection while control plants presented typical multi micronutrient deficiencies.

View larger version (140K): [in this window] [in a new window]   Fig. 4. Visual aspect of the green bean plants at the end of the experiment.

View larger version (11K): [in this window] [in a new window]   Fig. 5. Height evolution for green bean plant grown in hydroponics.

View larger version (17K): [in this window] [in a new window]   Fig. 6. Fresh weight of the green bean plants grown in hydroponics and sampled 29 and 49 d after the beginning of the experiment.

View larger version (16K): [in this window] [in a new window]   Fig. 7. Number of green bean pods collected 29, 39, and 49 d after treatments.

View larger version (16K): [in this window] [in a new window]   Fig. 8. Weight of green bean pods (g/plant) sampled 29, 39, and 49 d after the beginning of the treatments.