Progress 05/01/19 to 09/30/21
Outputs
Target Audience:The target audience was high plains corn producers; however, while the direct involvement with this audience was significantly limited due to COVID-19, multiple presentations were made virtually and a few were in person. Changes/Problems:Covid was the greatest challenge, not just for the dissemination of results but the implementation of the research.The location of the trial is 4.5 hours from campus, which means travel and overnight stays. If it were not for the great efforts of the local research station personnel, the work would have been lost. What opportunities for training and professional development has the project provided?During initial the Covid breakout, training was restricted to a few virtual meetings. However, since the implementation of the vaccine multiple in-person meetings were held including an on-site field day. The data was warmlyreceived and producers utilized the information and changed practices. More meetings will be held this spring in which this data will be presented. How have the results been disseminated to communities of interest?Factsheets, field days, presentations, youtube videos, and local newspress. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Goal 1. A rich data set was created over three growing seasons which included nitrogen by water treatments placed within a circle pivot in the panhandle. Each year the design on a 5 x 3 (5 nitrogen 3 water) factorial design replicated four times was implemented across 256 hectares. During the growing season, remote imagery was collected along with data from moisture sensors, at crop maturity yield was collected from all plots. At this point, the data has been summarized and is in the process of being submitted as a manuscript. Goal 2. While no direct tools were developed, this work is leading the researchers to better understand early-season rainfall patterns and the response to fertilizer nitrogen. This work will likely lead to adaptive N management strategies. It should be noted that due to this work producers in the region have reduced preplant N rates by up to 60 kg ha-1 per year.
Publications
- Type:
Other
Status:
Published
Year Published:
2019
Citation:
Pre-Plant Nitrogen Response in Irrigated Corn PSS-2186. 2019 Okla. Coop. Ext Serv. Okla. State Univ. Stillwater OK.
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Progress 10/01/19 to 09/30/20
Outputs
Target Audience:The target audience was high plains corn producers;however, the direct involvement with this audience was significantlylimited due to COVID-19. Changes/Problems:Covid prevented the opportunity to share the 2019 data as was planned. I expected to present it at least sixtimes at producer meetings. Most meetings were canceled and not rescheduled. What opportunities for training and professional development has the project provided?Multiple graduate students in Plant and Soil Sciences, Bio-systems Ag Engineering, and Ag Economics have had the opportunity to work in the field and on this data set. How have the results been disseminated to communities of interest?Basic N response data has been shared at a few producer meetings; however, the team is waiting for the third year of data (2020) before performing a much more in-depth analysis of the spatial interactions of Nitrogen and water. What do you plan to do during the next reporting period to accomplish the goals?During the next reporting period, we will harvest 2020 crops and establish 2021, begin analysis and in-depth reportingof the data(factsheets, presentations, and manuscripts), and begin the process of creating decision aid tools for the high plains corn producers of Oklahoma.
Impacts
What was accomplished under these goals?
Extensive field research was initiated in 2018 and will end in 2021 at the McCaull Research and Demonstration Farm located in northern Texas County, Oklahoma. The area has a cumulative season rainfall average of 250 mm; however, year-to-year has a great variance. The fluctuation of rainfall in the Panhandle increases water use, which over many years has significantly lowered the groundwater level of the Ogallala aquifer. Each year the study isconducted on a 50-hectare pivot. The project will use 3 pivots over the four-year study. Each pivot is in a different aspect of corn, wheat, sorghum rotation The study looked at five nitrogen rates across 3 levels of irrigation.The corn crop had variable N treatments prior to planting: 0, 79, 157, 235, and 314 kilogram nitrogen per hectare as anhydrous ammonia.The three irrigation rates of water that were used were 25 mm (80 percent ET, 25.4 mm), 32 mm (100 percent ET, 31.75 mm), and 38 mm (120 percent ET, 38.1 mm) approximately every five days. The irrigation capacity was 14.4, 18.2, and 30 liters per minute, respectively. Soil moisture sensors and reflectace data are regularly collected. During the last reporting cycle, the 2019 crop was harvested and the 2020 crop established.
Publications
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Progress 05/01/19 to 09/30/19
Outputs
Target Audience:Crop advisors and growers Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?
Nothing Reported
What do you plan to do during the next reporting period to accomplish the goals?In the Spring of 2020 studies will be initiated which follow the goals of the multi-sate project.
Impacts
What was accomplished under these goals?
This projected was initiated after planting season so no trials or demonstrations were established. Existing studies have been used for extension activities.
Publications
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