Tests on sunflower mineral fertilizers PARTNER ™
UAN State University Institute of Grain Crops
Dnipro, Erastivske research station
Soil: low-humus heavy loam chernozems and their poorly washed varieties. The reaction of the soil solution is neutral, the pH of the water extract is in the range of 6.5-7.0. The content of humus in the arable layer is from 4.0 to 4.5%. Gross content of nutrients: nitrogen from 0.23 to 0.26%, phosphorus from 0.11 to 0.16%, potassium from 2.0 to 2.5%. The nitrification ability of ordinary chernozem is average and high (2.0-3.2 mg N per 100 g of soil). Mobile phosphorus, according to Chirikov, in the arable layer - 7-10 mg per 100 g of soil.
Predecessor: winter wheat
Hybrid Fragment
Sowing: May 13, 2017
Full maturity of seeds: September 17, 2017
Scheme of research of the effectiveness of complex mineral fertilizers PARTNER ™ on sunflower:
Control (without treatment of seeds and sowing)
ENERGY NPK 13.40.13 + AMK + ME (4 kg / ha) (16.8 g in 1 l of H2O) in the phase of 5-6 leaves
BOR + NPK 20.20.20 + 2B + ME (4 kg / ha) in the phase of 8-10 leaves
ENERGY NPK 13.40.13 + AMK + ME (4 kg / ha) (16.8 g in 1 l of H2O) in the phase of 5-6 leaves BOR + NPK 20.20.20 + 2B + ME (4 kg / ha) in the phase of 8-10 leaves
Dates of the onset of the main phenological phases of growth and development of sunflower plants, 2017
Sep 13.05
Seedlings 29.05
5-6 leaves 12.06
Asterisk 25.06
The appearance of the basket 07/05
Flowering 20.07
Full ripeness of seeds 17.09
Determining the structural elements of the sunflower crop in the experiment showed a positive effect of the application of complex water-soluble mineral fertilizers on the growth and development of cultural plants.
The use of PARTNER ™ fertilizers in the technology of sunflower cultivation had a positive effect on the formation of biometric indicators and elements of the crop structure.
In the variant without crop treatment, the height of sunflower plants was 176.7 cm, the diameter of the basket - 16.8 cm, the weight of seeds from the basket - 53.2 g, the weight of 1000 seeds - 54.0 g. The use of each of the investigated preparations increased these indicators for 5.0-8.1 cm; 2.8-3.4 cm; 2.6-3.4 g and 6.3-8.2 g, respectively.
The best results were obtained when crops were sprayed twice with both types of fertilizer, in this case the difference with the control was 16.9 cm; 4.7 cm; 4.5 g 7.7 g.
Structural elements of sunflower seed yield depending on the use of PARTNER ™ fertilizer
Sunflower yield depending on spraying plants with PARTNER ™ complex fertilizers,
2017, c/ha
Conclusion
Weather conditions in 2017 in terms of humidity and air temperature were moderately favorable for the germination of seeds, growth and development of sunflower plants.
The summer weather was dry and hot, which did not allow to fully realize the genetic potential of plants and to obtain the corresponding productivity of cultivated crops.
The use of complex fertilizers PARTNER ™ on sunflower crops ensured an increase in seed yield.
A single spraying in the phase of three pairs of leaves with fertilizer
ENERGY NPK 13.40.13 + AMK + ME, or in the phase of 10 leaves with fertilizerBOR + NPK 20.20.20 + 2B + ME contributed to an increase in sunflower yield by 6.5%.
Two-time spraying with these fertilizers ensured a yield increase of13.4%, compared to the control.
