Susceptibility of Rice to Oebalus pugnax (F.) (Hemiptera: Pentatomidae) Feeding at Different Levels of Grain Maturity and Impacts on Insecticide Termination.

Autor:	Cato AJ; Department of Horticulture, University of Arkansas, Little Rock State Office, Little Rock, AR., Lorenz GM; Department of Entomology, University of Arkansas, Lonoke Extension Center, Lonoke, AR., Bateman NR; Department of Entomology, University of Arkansas, RREC, Stuttgart, AR., Hardke JT; Department of Crops, Soils, and Environmental Science, University of Arkansas, RREC, Stuttgart, AR., Black JL; Department of Entomology, Texas A&M University, College Station, TX., Thrash BC; Department of Entomology, University of Arkansas, Lonoke Extension Center, Lonoke, AR., Johnson DL; Department of Entomology, University of Arkansas, 319 Agriculture Building, University of Arkansas, Fayetteville, AR., Gore J; Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Delta Research and Extension Center, Stoneville, MS., Studebaker G; Department of Entomology, University of Arkansas, Northeast Research & Extension, NEREC, Keiser, AR., Fan SX; Department of Mathematics and Statistics, Auburn University, Statistical Consulting Center, Auburn, AL., Gaillard PR; Department of Mathematics and Statistics, Auburn University, Statistical Consulting Center, Auburn, AL.
Jazyk:	angličtina
Zdroj:	Journal of economic entomology [J Econ Entomol] 2020 Feb 08; Vol. 113 (1), pp. 249-254.
DOI:	10.1093/jee/toz250
Abstrakt:	The stages of rice, Oryza sativa L. (Poales: Poaceae), grain maturity that are most susceptible to rice stink bug, Oebalus pugnax (F.), damage have been identified; however, the stage at which they are no longer capable of causing appreciable damage during grain maturity is unclear. The objective of this study was to determine the susceptibility of rice to rice stink bug feeding at different levels of grain maturity and determine an insecticide termination timing. Rice stink bug damage was examined using five levels of grain maturity described as percent of kernels reaching mature straw coloration referred to as hard dough (20, 40, 60, 80, and 100%) across a range of infestation levels using single panicle sleeve cages and large cages. Hybrid and conventional cultivar rice panicles at 20, 40, and 60% hard dough were found to be susceptible to indirect yield loss, as two rice stink bugs per panicle resulted in over 7% peck. In large cage trials, 25 rice stink bugs caused 0.7-1% peck to hybrid and conventional rice plots at 20% hard dough. Much less damage was observed once rice reached 60% hard dough, where peck averages only reached 0.4%. Decreased damage at 60% hard dough was validated using uncaged trials where 0.4% additional peck was observed in unsprayed plots. These data indicate that rice in the early stages of hard dough is susceptible to large levels of indirect yield loss, but unless significant densities of rice stink bug are present at 60% hard dough, no more sampling or applications are necessary. (© The Author(s) 2019. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
Databáze:	MEDLINE
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