EFFICACY AND SELECTIVITY EVALUATION OF SEVERAL FERTILIZER EMPLOYED AS BIO-STIMULANTS ON APRICOT IN ITALY
The trial was set up in a farm sited in Campiglione Fenile, Piedmont Region – Northern Italy, in a typical apricot growing area.
The aim of the study was evaluated the efficacy and selectivity on the crop (apricot, LadyCot variety) of different bio-stimulants and fruit enlargers formulations. On treatment T2 was used the first reference product, Amminoacid Animal origin 10 L, applied at 200 mL/100L. On treatment T3 was applied test product Amminoacid Animal origin AMETECH at 200 mL/100L.
The second reference product Amminoacid Vegetable origin was used on treatment T4 at 200 mL/100L and on treatment T5 was applied the test product Amminoacid Vegetable origin AMETECH at the same rate.
Three applications were performed starting from fruits set and on April 16th at BBCH 71-72 (ovary growing), April 28th at BBCH 72 (green ovary surrounded by dying sepal crown, sepals beginning to fall) and on May 11th at BBCH 72-73 (second fruit fall)
with 12-13 days of interval between the applications.
By the analysis of the results of this trial, all test products didn’t provide a significant growth regulator activity compared to the untreated check. No differences were recorded between the control and the treatments in terms of yield, even if Amminoacid Animal origin AMETECH applied at 200 mL/100L showed an increase of yield per hectare compared to Amminoacid Animal origin applied alone. The best result was recorded for the reference product Amminoacid Vegetable origin applied alone that showed the highest value in terms of yield.
No differences were carried out between the test and references product in terms of fruit quality parameters.
No phytotoxic symptoms were observed during the assessments performed. All test products showed a complete selectivity on apricot, LadyCot variety.
Product Type Rate Unit Spray Volume Volume unit
Amminoacid Animal origin SL 200 mL/100 L 1000 L/ha
Amminoacid Animal origin Ametech SL 200 mL/100 L 1000 L/ha
Amminoacid Vegetable origin SL 200 mL/100 L 1000 L/ha
Amminoacid Vegetable origin Ametech SL 200 mL/100 L 1000 L/ha
Fig. - Yield per hectare (kg) calculated starting from the yield on 2 central trees per plot