The use of Clean Fertilizer Technology, particularly CF-N28 and NSB, in sunflower cultivation is a promising agronomic strategy to support plants' recovery from post emergence herbicides, grain and oil yield, while decreasing the total Nitrogen supply. Clean Fertilizer technology represents also an opportunity to boost the yield when applied as a Nitrogen extra supply in difficult situations. The Clean fertilizer Technology complies with environmental constraints linked to the carbon impact of nitrogen fertilization in general. This summary presents the results of trials conducted with the support of the agronomy department of Braila University (Romania) and SADEF (France), highlighting the agronomical, economical, and physiological benefits of this technology.
The trials were conducted in two different countries with strong pedoclimatic differences and during different seasons. Were also tried different strategies: decrease of total Nitrogen supply integrating CLEAN FERTILIZER technology in mix with the post emergence herbicide or extra Nitrogen supply before flowering together with a fungicide to support the plants towards the drought stress.
Comparisons between:
Control: baseline fertilization with urea (full or reduced).
CF N28 and CF NSB: integration of CF-N28 and CF NSB at 30 L/ha at BBCH 14/16 or in combination with a fungicide at BBCH 50 (before flowering).
(see table)
