|GUO, JINGQI - Texas A&M Agrilife|
|DUO, FUGEN - Texas A&M Agrilife|
|ZHOU, XIN-GEN - Texas A&M Agrilife|
|HONS, FRANK - Texas A&M University|
Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 9/30/2015
Publication Date: 11/14/2015
Citation: Guo, J., Duo, F., Zhou, X., Hons, F.M., Mcclung, A.M. 2015. Effect of rice variety and nutrient management on rice productivity in organic rice system. Agronomy Abstracts, paper number 92406, Minneapolis, MN, Nov. 15-18,2015.https://scisoc.confex.com/scisoc/2015am/webprogram/Paper92406.html. ASA-CSSA-SSSA Annual Meeting Abstracts. Talk number 258-10.
Technical Abstract: Demand for organic rice has been increasing for decades. However, the information on sustainable organic rice production systems is still lacking. The objective of this study was to investigate the effects of soil amendment products, nitrogen rate, and variety on rice grain yield, yield components, grain protein, and chlorophyll content. Two field experiments with four replications were conducted including rice varieties, Presidio and Tesanai 2, soil amendment products, Nature Safe and Rhizogen, and nitrogen rates, 0 and 150 kg N/ha, in 2012 and 2013 at Beaumont, TX. Our data revealed interacting effects of soil amendments, year, variety, and nitrogen rate on panicle count. Presidio had significantly greater total grain milling yield and whole grain milling yield than Tesanai 2 under both nitrogen rate treatments and soil amendments. Rice yield was higher at nitrogen rate of 150 kg N/ha (9,210 kg/ha) as compared to 0 kg N/ha (8,176 kg/ha). However, no significant difference in rice yield or yield components was observed between the two soil amendment products. Furthermore, the data also showed that Tesanai 2 had greater rice yield and plant height than Presidio. Our study indicated that variety selection and nitrogen fertilization can be an effective tool for optimizing high-yielding organic rice production.