In the quest for sustainability, every drop counts!
In 2024, The Dora trial team embarked on a new journey with the AOS fertilizer efficiency test, aiming to utilize every ounce of potential from our natural bounty.
The trial was conducted in the CSNAP in Changshu, Jiangsu. In April, sow the seeds in field, In May and June, A total of 4 treatments were set up in the experiment, as follows:
Group A: Control, only urea and compound fertilizer were applied.
Group B: Reduce 20% fertilizer dosage, Add 0.01% AOS into the fertilizer application.
Group C: Add 0.25% DMPP into the fertilizer application.
Group D: Add 0.15% NBPT into the fertilizer application.
The first fertilization time of the field test was May 22. 2g urea was evenly applied to each corn seedling in each treatment. Groups A, C, and D applied 340g urea, and Group B applied 272g urea + AOS.
The topdressing time was June 18, and compound fertilizer (NPK 16-16-16) was added. Groups A, C, and D applied 340g urea and 264g compound fertilizer. Group B applied 272g urea + AOS and 264g compound fertilizer.
When saving 20% of fertilizer, the empty panicle part of group B with 0.01% AOS was the shortest, the empty panicle part of the NBPT group was medium, and the difference between the control group and the DMPP group was very small, which shows that the role of DMPP is limited.
Dora AOS has excellent efficacy in promoting the growth and development of corn kernels. It improves nutrient utilization and makes corn ears fuller and more complete. Application of NBPT also showed positive effects, although not to the same extent as Dora AOS. In contrast, the effect of DMPP remains limited.
The 100-grain weight of the group treated with Dora AOS (Group B) was significantly higher than that of the control group and the group treated with a combination of DMPP and NBPT. In addition, the 100-grain weight of the NBPT group was also better than that of the control group. There were no significant differences between the DMPP and control groups, indicating that Dora AOS and NBPT were more effective in promoting corn kernel filling and accumulation of material within individual kernels, thereby increasing their weight and thus overall hundred-kernel weight.
AOS, DMPP and NBPT have a positive impact on the ear yield of fresh corn, and they can all increase the ear emergence rate of corn to increase yield potential.
Even with a 20% reduction in chemical fertilizers, Group B treated with 0.01% AOS had the highest yields, and the yields of the NBPT group also increased. These results highlight that both Dora AOS and NBPT can improve fertilizer nutrient use efficiency, thereby increasing crop yields, while also Take advantage of the synergistic effect of fertilizers. In contrast, the impact of DMPP on yield appears limited.
When fertilizer is reduced by 20%, the application of AOS can achieve better results than adding DMPP alone, and can also be comparable to or exceed the effect of adding NBPT alone to a certain extent. Therefore, AOS can be applied in the field to achieve the purpose of saving fertilizer and reducing carbon.