It will be difficult to define the fertilization strategy in this summer cycle, considering that the crops planted will mostly be late, expired or delayed. it is also present the strict girlthe lack of humidity in the profiles and the expectations of a return to rain only for the month of February.
How to consider each variable, decide and get stable returns? Faced with great uncertainty, we must start with certainties
For this Fertilizar Asociación Civil organized a technical meeting focused on fertilization and water availability. He titled it: “Summer crop nutrition, with a focus on water management”.
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According to the Fertilize Technical Committee, when the resource restriction scenario is due to water, it is important to focus on agronomy to understand the contribution of each technology.
Those producers who decide to plant a late harvestwithout a fully available moisture profile, likewise, they must propose a beneficial plant nutrition strategy thinking about water use efficiency because “water is best used when nutritional conditions are best, reducing surrender”, highlighted the coordinator of the Committee and professor of the National University of La Pampa, Martin Diaz Zorita (Photo 1).
Díaz Zorita gave a central consideration to the “nutrient of the year”: phosphorus. “This campaign is the cycle of phosphorus, the drought-tolerant nutrient”quoted from Fertilize.
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“With balanced fertilization and adequate phosphorus nutrition, root architecture changes -prolificacy and depth-, generating more resources to grow in Corn. Likewise, inside military, increases the nodulation. A better nodulated crop is more nitrogen to grow,” she pointed out.
PHOSPHORUS
From Fertilize they insisted, once again, that the shortcomings of phosphorus They are very frequent and important. In 2011, the extractable phosphorus in the Central Region was 23.3 parts per million (ppm), but in 7 years (in 2018) it was 16.3 ppm. “Lack of phosphorus application keeps productivity down by 10 percent.”
Before offering considerations, Díaz Zorita assured that “the phosphorus fertilization strategy is very important for the results”.
CONSIDERATIONS
- The second soybean responds positively to residual fertilization in wheat, only when replacement doses of phosphorus in wheat are applied.
- With the frequent practice of fertilizing wheat, fertilizing second soybean crops improves yields.
- In the case of maize, in studies conducted in Eduardo Castex (La Pampa) and Nogoyá (Entre Ríos), fertilization optimized production “because it improved the efficiency of water use”.
We share the newsletter @LTecnoagro which delves into the economic and technical aspects of fertilizing this coarse campaign: https://t.co/VNHNllMOgo pic.twitter.com/DaESKGT0bi
— Fertilizar AC (@FertilizarAC) November 14, 2022
ZINC
For his part, the technical coordinator of the institution, Nicolás Rouillet (photo 2), focused on zinc, a nutrient already deficient in 83% of the Pampas region, and also a determining factor in the face of thermal stress, a factor to be expected in this summer with heat waves.
“Beyond need, zinc protects crops from overexposure to light -radiation with closed stomata-. This stress generates free radicals, which damage cells. Zinc protects cells from these harmful chemicals,” Rouillet explained.
The consultant also rated zinc as an important nutrient for human nutrition.
Both Díaz Zorita and Rouillet highlighted the results seen in Fertilizar’s “Nutrition Strategies Valuation Network”.
“The result over 6 years and 66 trials on representative crops was that current use of fertilizers increases yields by up to 22% and that the yield gap due to improvements in nutrition between current management and high yields is 14 %. ”, maintained.
For them, fertilization improves production and with better nutritional strategies there are answers.
“During fertilization, the goal is to increase the efficiency of water use and doing it responsibly improves nutrient availability for plants. Every millimeter transmitted must be converted into performance,” they concluded.
