Yield increase of 25-60 % at 3 different sites with AMALGEROL + herbicide combination

In 2010, 3 different sunflower trials were conducted in Bulgaria:

a) the Agricultural University of Plovdiv compared an untreated control to an AMALGEROL + herbicide combination in 3 dosages: 3 l/ha, 4 l/ha and 5 l/ha (always in combination with a constant dose of broad leaf and grass herbicides, Fig. 1)

b) in Tschirpan (Institute of Cotton and Durum Wheat) as well as in c) Karnobat (Agricultural Institute, Eastern Bulgaria) an untreated control was compared to a combination of 3 l/ha AMALGEROL + broadleaf and grass herbicides (Fig. 2)

AMALGEROL was always applied together with the herbicides in the 6-8 leaves stage (BBCH 16-18).

In Plovdiv, the AMALGEROL + herbicides combination increased the sunflower yield by 33 % (3 l/ha), 46 % (4 l/ha) and 60 % (5 l/ha). Though the herbicide dose was equal in all 3 variants, yield increased 10 % per additional liter of AMALGEROL applied per hectare.

In Tschirpan the increase was 58 % (3 l/ha). The highest increase was measured in Karnobat with 63 %.  

+ 25 - 60 % more yield (AMALGEROL+herbicides)

+ bigger roots

+ earlier ripening

Fig. 3. AMALGEROL-treated sunflowers formed bigger roots than the untreated sunflowers.

Fig. 4. Sunflowers have already finished flowering forming seeds on the treated part of the field while they are still fully flowering on the untreated part.