| residual concentrations of propanil, tcab, and other pesticides in rice-growing of soils in the united states, 1972. | ninety-nine soil samples from the rice-growing states of arkansas, california, louisiana, mississippi, and texas were collected, primarily to monitor the herbicide propanil. no residual concentrations of propanil were detected in any of these samples, but tcab, a propanil transformation product, was detected in six samples at concentrations ranging from 0.01 ppm to 0.05 ppm. organochlorine and organphosphorus pesticide determinations were also performed. the compounds dieldrin, aldrin, and ddt a ... | 1980 | 7422467 |
| identification of candidate markers associated with agronomic traits in rice using discriminant analysis. | plant genetic mapping strategies routinely utilize marker genotype frequencies obtained from progeny of controlled crosses to declare presence of a quantitative trait locus (qtl) on previously constructed linkage maps. we have evaluated the potential of discriminant analysis (da), a multivariate statistical procedure, to detect candidate markers associated with agronomic traits among inbred lines of rice (oryza sativa l.). a total of 218 lines originating from the us and asia were planted in fie ... | 2005 | 15678327 |
| predicting economic losses from the continued spread of the mexican rice borer (lepidoptera: crambidae). | the mexican rice borer, eoreuma loftini (dyar) (lepidoptera: crambidae), is an invasive species that originated from mexico, and it is threatening to cause major economic losses to sugarcane, saccharum spp., and rice, oryza sativa l., industries in louisiana. the insect is expected to reach sugarcane and rice production areas in louisiana by 2008, and infest all of louisiana sugarcane and rice industries by 2035. when all sugarcane in louisiana becomes infested, annual yield losses of $220 milli ... | 2008 | 18459384 |
| effect of planting date on lissorhoptrus oryzophilus (coleoptera: curculionidae) density-yield relationship on rice in southeastern texas. | results of planting date and insecticide efficacy experiments targeting lissorhoptrus oryzophilus kuschel (coleoptera: curculionidae) on rice, oryza sativa l., in southeastern texas between 2002 and 2007 were used to determine density-yield relationships as a function of planting date. soil core samples were collected on two dates during main crop development to estimate immature l. oryzophilus populations followed by main and ratoon crop harvests. analysis of covariance (ancova) revealed that p ... | 2009 | 19736766 |
| nutritionally important starch fractions of rice cultivars grown in southern united states. | dietary starches can be classified into 3 major fractions according to in vitro digestibility as rapidly digestible (rds), slowly digestible (sds), and resistant starch (rs). literature indicates that sds and/or rs have significant implications on human health, particularly glucose metabolism, diabetes management, colon cancer prevention, mental performance, and satiety. in this study, the nutritionally important starch fractions (rds, sds, and rs) in cooked rice were assayed in vitro, making us ... | 2010 | 20629878 |
| variation in grain arsenic assessed in a diverse panel of rice (oryza sativa) grown in multiple sites. | • inorganic arsenic (as(i) ) in rice (oryza sativa) grains is a possible threat to human health, with risk being strongly linked to total dietary rice consumption and consumed rice as(i) content. this study aimed to identify the range and stability of genetic variation in grain arsenic (as) in rice. • six field trials were conducted (one each in bangladesh and china, two in arkansas, usa over 2 yr, and two in texas, usa comparing flooded and nonflood treatments) on a large number of common rice ... | 2011 | 22142234 |
| seasonal infestations of two stem borers (lepidoptera: crambidae) in noncrop grasses of gulf coast rice agroecosystems. | infestations of two stem borers, eoreuma loftini (dyar) and diatraea saccharalis (f.) (lepidoptera: crambidae), were compared in noncrop grasses adjacent to rice (oryza sativa l.) fields. three farms in the texas rice gulf coast production area were surveyed every 6-8 wk between 2007 and 2009 using quadrat sampling along transects. although d. saccharalis densities were relatively low, e. loftini average densities ranged from 0.3 to 5.7 immatures per m(2) throughout the 2-yr period. early annual ... | 2011 | 22251716 |
| population distribution and range expansion of the invasive mexican rice borer (lepidoptera: crambidae) in louisiana. | the mexican rice borer, eoreuma loftini (dyar) (lepidoptera: crambidae), is an invasive pest that was first introduced into southern texas in 1980 and has been expanding its range eastward along the united states gulf coast. the pest attacks rice (oryza sativa l.), sugarcane (saccharum spp.), corn (zea mays l.), and other graminaceous crops, and its establishment in louisiana is expected to have severe economic impacts on crop production. range expansion and population distribution of e. loftini ... | 2017 | 28334259 |
| monitoring mexican rice borer (lepidoptera: crambidae) populations in sugarcane and rice with conventional and electronic pheromone traps. | the mexican rice borer, eoreuma loftini (dyar), is a major pest of sugarcane, saccharum spp., rice, oryza sativa l., and other graminaceous crops in texas and louisiana. the ability of conventional and electronic pheromone traps to monitor e. loftini in sugarcane and rice habitats was evaluated in two separate 2-yr field studies. bucket traps baited with a synthetic female sex pheromone monitored e. loftini populations in commercial sugarcane fields in calcasieu and jefferson davis parishes thro ... | 2017 | 28053210 |
| the active space of mexican rice borer pheromone traps. | the mexican rice borer, eoreuma loftini (dyar) (lepidoptera: crambidae), is an invasive pest of sugarcane, saccharum spp., rice, oryza sativa l., and other graminaceous crops in the united states. traps baited with the synthetic female sex pheromone of e. loftini are used for monitoring and management of this invasive pest. however, the active space, or radius of attraction, of these traps is not known. two field experiments examined the effect of intertrap distance on trap captures with hexagon ... | 2016 | 27665613 |
| expansion of the mexican rice borer (lepidoptera: crambidae) into rice and sugarcane in louisiana. | the mexican rice borer, eoreuma loftini (dyar) (lepidoptera: crambidae), is an invasive pest of sugarcane, saccharum spp., rice, oryza sativa l., and other graminaceous crops in the gulf coast region of the united states. traps baited with e. loftini female sex pheromones were used to document establishment and distribution of e. loftini near sugarcane, rice, and noncrop hosts in seven southwest louisiana parishes from 2009 to 2013. additional field surveys documented larval infestations in comm ... | 2015 | 26313982 |
| residues of thiamethoxam and chlorantraniliprole in rice grain. | thiamethoxam and chlorantraniliprole insecticides have been important tools for controlling pests in rice. however, food safety issues related to pesticide residues are important to consider with a food crop such as rice. therefore, the objective of this study was to analyze thiamethoxam and chlorantraniliprole residues in rice hull, bran, and polished rice grains. the study was conducted during the 2012 cropping season at the texas a&m agrilife research, david r. wintermann rice research statio ... | 2015 | 25626153 |