Progress 01/01/12 to 12/31/12
OUTPUTS: Activities: Soil Test Correlation/Calibration is extremely important for the overall productivity of Mississippi producers. In 2012 research was initiated to implement a strategy for revisiting Mississippi State University's P and K soil test recommendations. Current work includes the three major row crops in Mississippi soybean, corn, and cotton. Also work is underway to develop Zn fertilization recommendations for corn. Work completed in year one established 7 off station trials for soybean, 4 off station sites for corn and 2 off station sites for cotton. Long term fertilization trials were also initiated at the DREC to serve as a base for the program. Work conducted in 2012 allowed for a great starting point in the updating process. For cotton, year one trial results were variable, with little response to potash fertilization in all trials that were harvestable. For trials evaluating potash fertilization across multiple varieties, the interaction of variety x fertilization strategy was non-significant. Similar to the interaction, the main effect of potash fertilization strategy was also non-significant only the main effect of cotton variety influenced final cotton yield in the trial. In general, the more aggressively growing, longer season varieties tended to have the greatest lint yields. More specifically, PHY499WRF and ST5458B2F produced similar and greater cotton lint yields when compared with DP0912B2RF For soybean, 2 of 7 seven sites responded positively. Visual responses were noted at the trial location on the Jacks and Tabb farms. The Humphrey's Co. site had a significant response to potash fertilization but not to phosphorus. A significant response was also observed at a testing location near Boyle, MS. More specifically yield increases of 7 and 10 bu/ac were observed for the Boyle and Humphrey's county locations respectively. Both responsive sites had Mehlich-3 and Lancaster soil test K values less than 150 ppm. For Corn, 2 of 4 sites responded positively to potash fertilization. The two responsive sites were on producers fields in Bolivar and Leflore Co. At each site corn yields produced statistically greater yields when potash fertilizer was applied compared to the untreated control. Yield increases of 27 and 73 bu/acre were observed at the Bolivar and Leflore Co. sites, respectively. Lancaster and Mehlich-3 soil test K for the two responsive sites was 150 ppm or lower. At the Leflore site were the largest response occurred soil test K was less than 50 ppm. Soil test correlation to agronomic crop yield takes a wealth of data and 2012 provided a good start. Preliminary work conducted in 2012 generated an indication that with the changing crop rotational mix in Mississippi; soil test recommendations will need to be kept current and revised. Events: Research findings were presented at grower meetings, consultant meetings, field days, and demonstrations. Specific research results were presented at three scientific meetings. PARTICIPANTS: Bobby R. Golden Assistant Research Professor, Principal Investigator Activities: Coordinate all activities within research program. Cooperate with researchers at the Delta Research and Extension Center and the Mississippi State University campus. Procure funding for support of research program. Technology transfer to producers, extension agents, researchers, and industry personnel. Jim Nichols Research Associate Activities: Assist with all facets of research program, i.e., plot establishment, treatment application, data collection/processing/summarization, plot harvest Willie Earl Clark Research Technician Activities: Assist with all facets of research program, i.e., plot establishment, treatment application, data collection/processing/summarization, plot harvest Robert Sullivan Research technician Activities: Assist with all facets of research program, i.e., plot establishment, treatment application, data collection/processing/summarization, plot harvest Collaborators: Dr. Wayne Ebelhar, Research Professor Dr. Larry Oldham, Extension Professor TARGET AUDIENCES: Mississippi Corn, Cotton, and Soybean producers Mississippi Agricultural Consultants' Association Agricultural fertilizer companies and distributors PROJECT MODIFICATIONS: Not relevant to this project.
Research established to evaluate current soil test criteria are essential in revising and improving current soil test recommendations and fertility programs for Mississippi row crop producers. Current changes in the rotational mix as well as wider adaptation of grain crops that remove greater amounts of nutrients at harvest, has led to many producers needed to modify their long term fertility needs. This research provides unbiased data for fertilizer management strategies for the major row crops produced in Mississippi
- Golden, B.R., T.W. Walker, and S.L. Linscombe. 2012. Seeding date effects on grain yield stability. Rice Technical Working Group. Feb 27-29. Hot Springs, AR.
- Golden, B.R, J. Nichols, and L. Oldham. 2012. Corn Response to Environmentally Smart Nitrogen in the Mid South USA. American Society of Agronomy Annual Meetings. Oct 21-24. Cincinnati, OH.
- Fitts, P.W., Walker, T.W., J.L. Krutz, B.R. Golden, and J.J. Varco. 2012. Nitrogen loss potential by nitrification/denitrification as affected by N-source in rice. In Annual meetings abstracts [CD-ROM]. ASA, CSSA, and SSSA, Madison, WI. Southern Branch American Society Agronomy. Birmingham, AL. Feb 5-7, 2012.
- Fitts, P.W., Walker, T.W., J.L. Krutz, B.R. Golden, and J.J. Varco. 2012. Evaluation of N source on mitigating nitrification/denitrification loss in rice. . In Biannual meetings abstract [CD-ROM]. 34th Rice Technical Working Group. Hot Springs, AR. Feb 27-Mar 1.
- Gore, J. A. Catchot, D. Dodds, T. Irby, E. Larson, N. Buehring, T. Allen, J. Bond, T. Eubank, T. Walker, J. Krutz. R. Jackson, F. Musser, B. Golden, D. Cook, A. Henn, L. Oldham, and J.M. Riley. 2012. Using social media in IPM research and extension programs. In annual meetings abstract Journal of Insect Science.
- Oldham, L. and B.R. Golden. 2012. Macro-scale nutrient budgets in Mississippi Delta agronomic crop production. American Society of Agronomy Annual Meetings. Oct 21-24. Cincinnati, OH.
- Golden, B.R., T.W. Allen, S. Lu., P. Thaxton, G.L. Ssciumbato. 2012. Response of cottons varieties to inoculation with xanthomonas axonopodis pv. Malvacearum in Mississippi. In proceedings of the annual beltwide cotton conference. Orlando, Fl. January 3-6.
- Golden, B.R., D.M. Dodds,W.E. Clark, N.W. Buering, L. Falconer. M.W. Shankle. T.P. Wallace 2012. Mississippi cotton variety trials 2012. MS. Agric. Exp. Stn. Bull. 461. Starkville, MS.
- Irby, J.T., T.W. Eubank, and B.R. Golden. 2012. 2013 Soybean variety suggestions. [Online] Available at http://www.mississippi-crops.com/2012/12/05/2013-soybean-variety-sugg estions/.
- Golden, B.R. 2012. 2012 Cotton OVT preliminary data tables. 2012. [Online] Available at http://www.mississippi-crops.com/2012/11/12/2012-cotton-ovt-prelimina ry-data-tables/.
- Allen, T. and B.R. Golden. 2012 Response of Cotton Varieties to Inoculation with Xanthomonas axonopodis pv. malvacearum in Mississippi. [Online] Available at http://www.mississippi-crops.com/2012/07/04/response-of-cotton-variet ies-to-inoculation-with-xanthomonas-axonopodis-pv-malvacearum-in-miss issippi/.
- Allen, T., B.R. Golden, and D.M. Dodds. 2012. Scouting cotton for bacterial blight. [Online] Available at http://www.mississippi-crops.com/2012/06/29/scouting-cotton-for-bacte rial-blight/
- Golden, B.R. 2012. Zinc deficient corn observed in MS delta. [Online] Available at http://www.mississippi-crops.com/2012/04/21/zinc-deficient-corn-obser ved-in-ms-delta/.
- Golden, B.R. 2012. 2011 Official cotton variety trial booklet correction. [Online] Available at http://www.mississippi-crops.com/2012/02/13/2011-official-cotton-vari ety-trial-booklet-correction/
- Golden, B.R. 2012. Using Environmentally Smart Nitrogen Page 8-9 in Mississippi State University Delta Research and Extension Center 2012 Annual Report. Stoneville, MS: Delta Research and Extension Center. [Online]. Available at http://msucares.com/drec/news/drec_annual_report_2012.pdf
- Fitts, P.W., T.W. Walker, B.R. Golden, J.L. Corbin, and L.J. Krutz. 2012.Evaluation of nitrogen source on mitigating nitrification/denitrification loss in rice. Page 22 in Mississippi State University Delta Research and Extension Center 2012 Annual Report. Stoneville, MS: Delta Research and Extension Center. [Online]. Available at http://msucares.com/drec/news/drec_annual_report_2012.pdf
- Larson, E., B.R. Golden, and L. Oldham. 2012. Burning Stalks, What does it really cost [Online] Available at http://www.mississippi-crops.com/2012/08/09/burning-stalks-what-does- it-really-cost/
- Allen, T., B.R. Golden, and D.M. Dodds. 2012. Bacterial blight of cotton update: July 13, 2012. [Online] Available at http://www.mississippi-crops.com/2012/07/13/bacterial-blight-of-cotto n-update-july-13-2012/
- Golden, B.R. 2012. Soybean Inoculant Research. Page 26-27 in Mississippi State University Delta Research and Extension Center 2012 Annual Report. Stoneville, MS: Delta Research and Extension Center. [Online]. Available at http://msucares.com/drec/news/drec_annual_report_2012.pdf
- Golden, B.R., M. W. Ebelhar, and L. Oldham. 2012. Evaluation of Polymer Coated Urea as an Alternative N Source for Cotton. Southern Branch ASA. Feb. 5-7. Birmingham, AL.