Managing Global Resources for a Secure Future

2017 Annual Meeting | Oct. 22-25 | Tampa, FL

108997 Effect of Flood Timing on Rice Grain Yield in a Drill-Seeded, Delayed-Flood Rice Production System.

Poster Number 1210

See more from this Division: ASA Section: Agronomic Production Systems
See more from this Session: Agronomic Production Systems General Poster

Wednesday, October 25, 2017
Tampa Convention Center, East Exhibit Hall

Manoch Kongchum1, Dustin L. Harrell1 and Nutifafa Adotey2, (1)1373 Caffey Road, Louisiana State University Rice Experiment Station, Rayne, LA
(2)School of Plant, Environmental, and Soil Sciences, Louisiana State University, Baton Rouge, LA
Poster Presentation
  • SSSA 2017 poster_Kongchum.pdf (2.0 MB)
  • Abstract:
    In a drill-seeded delayed-flood rice production system, the permanent flood is applied just before rice begins tillering. The effect of flooding later or earlier on grain yield is unknown. A field experiment was conducted at LSU AgCenter H. Rouse Caffey Rice Research Station in Crowley, Louisiana, to evaluate rice grain yield at 5 different flood timings for nine rice varieties and hybrids: CL111, CL151, XL753, CLXL745, Cheniere, LaKast, Roy J, Mermentau, and Jupiter. Permanent flood was established 7 days after CL111 reached the 2-3 leaf growth stage and every 7 days thereafter. Mean grain yield across varieties from highest to lowest was 14 days (10,959 kg ha-1), 7 days (10,388 kg ha-1), 21 days (9,829), 0 days (9,503), and 28 days (9,287) after CL111 reached 2-3 leaf stage. Rice yield was affected by the flood timing by variety interaction. Five varieties (CL111, CL151, XL753, CLXL745, and LaKast) showed the highest yield when permanent flooding started 14 days after CL111 reached 2-3 leaf stage of development while the other 4 varieties (Cheniere, Roy J, Mermentau, and Jupiter) showed the highest yield when permanent was applied 7 days after CL111 reached 2-3 leaf stage of development. Preliminary data suggests that permanent flood establishment can be delayed up to 14 days after the 2-3 leaf stage of development for some rice varieties and hybrids without sacrificing grain yield.

    See more from this Division: ASA Section: Agronomic Production Systems
    See more from this Session: Agronomic Production Systems General Poster