Effect of Depth of Flooding on the Rice Water Weevil,<i>Lissorhoptrus oryzophilus</i>, and Yield of Rice

Tindall, Kelly V.; Bernhardt, J. L.; Stout, Michael J.; Beighley, Donn

doi:10.1673/031.013.6201

Cited by 11 publications

(11 citation statements)

References 20 publications

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“…On the other hand, a smaller water depth can reduce oviposition before plants become more tolerant to insect attack, reducing infestation and damages to roots . Furthermore, the water can reach temperatures that are lethal to eggs and larvae (Raksarart & Tugwell, 1975;Martins et al, 2009;Tindall et al, 2013).…”

Section: Maximum Valuementioning

confidence: 99%

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Relationship between the occurrence of the rice water weevil and water depth in flooded rice crop

Büttow

Pazini

Seidel

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to assess the relationship between the depth of irrigation water and larval infestation by Oryzophagus oryzae in flooded rice crop. Water depth and larval infestation were evaluated in the upper levee, in between levees, and in the lower levee. The data were subjected to the descriptive statistical and geostatistical analyses. The highest larval infestation occurs in field areas with greater water depth, which is typical of the lower levee. The spatial distribution of O. oryzae larvae is of the aggregate type and depends on the greater irrigation water depth.Index terms: Oryza sativa, Oryzophagus oryzae, geostatistics, spatial distribution. Relação entre ocorrência da bicheira-da-raiz e profundidade da água em arroz irrigado por inundaçãoResumo -O objetivo deste trabalho foi determinar a relação entre profundidade da água de irrigação e infestação larval de Oryzophagus oryzae em arroz irrigado por inundação. A profundidade da água e a infestação larval foram avaliadas no leiveiro superior, no centro do quadro e no leiveiro inferior. Os dados foram submetidos às análises estatística descritiva e geoestatística. A maior infestação larval ocorre em áreas da lavoura de maior profundidade da água, típica do leiveiro inferior. A distribuição espacial das larvas de O. oryzae é do tipo agregada e dependente da maior profundidade da lâmina de irrigação.Termos para indexação: Oryza sativa, Oryzophagus oryzae, geoestatística, distribuição espacial.

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Section: Maximum Valuementioning

confidence: 99%

“…The depth of irrigation water affects the population dynamics of rice water weevils (Martins et al, 2009;Tindall et al, 2013). Therefore, spatial distribution and larval density can be altered by soil irregularities and flatness, which includes upper and lower levees and the center of the area limited by both levees in sloped areas.…”

mentioning

confidence: 99%

Relationship between the occurrence of the rice water weevil and water depth in flooded rice crop

Büttow

Pazini

Seidel

et al. 2017

Pesq. agropec. bras.

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“…Both tactics had been shown previously to reduce weevil populations in small-plot field trials (46)(47)(48). To evaluate integrated use of these tactics, a split-plot experiment was conducted over two years, with three replications during both the years.…”

Section: Integrated Use Of Reduced Rates Of Cap Shallow Flooding Anmentioning

confidence: 99%

The Use of Systemic Anthranilic Diamide and Neonicotinoid Seed Treatments in Rice Pest Management

Lanka

Stout

2014

ACS Symposium Series

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The rice water weevil, Lissorhoptrus oryzophilus, is the key insect pest of rice in the United States. Over the last five years, anthranilic diamide and neonicotinoid seed treatments have been introduced into the U.S. rice market for management of rice water weevils and other early and mid-season pests. This chapter reviews several aspects of the use of seed treatments in rice. In a four-year field study involving over 40 commercial fields throughout Louisiana, threshold densities of rice water weevil larvae were exceeded in over 80% of untreated fields. Seed treatments of thiamethoxam, a neonicotinoid, were about as effective as foliar applications of pyrethroids at reducing densities of rice water weevil larvae in commercial fields, while seed treatments containing chlorantraniliprole were significantly more effective than pyrethroids or thiamethoxam. A series of greenhouse studies demonstrated that seed treatments of chlorantraniliprole and thiamethoxam have differential effects on life stages of the rice water weevil. Seed treatment with thiamethoxam reduced survival of adults feeding on leaves of treated plants, and had pronounced effects on egg-laying and early instar survival; chlorantraniliprole seed treatment, in contrast, had no effects on adults and exerted its effects primarily on root-feeding larvae. These differences in biological activities were consistent with patterns of distribution of insecticides in tissues of treated plants: high concentrations of chlorantraniliprole were found

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“…Several nonchemical tactics have been explored for management of the RWW. Manipulating flood depth has been suggested as a potential cultural tactic for management and shallow flood depth was found to reduce immature weevil densities in small plot experiments (Stout et al ., ; Tindall et al ., ). Also, evidence for differences in resistance to RWW among rice cultivars has been reported (Stout et al ., ).…”

Section: Introductionmentioning

confidence: 97%

Integrating flood depth and plant resistance with chlorantraniliprole seed treatments for management of rice water weevil, Lissorhoptrus oryzophilus (Coleoptera: Curculionidae)

2014

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Chlorantraniliprole seed treatments in rice provide effective suppression of rice water weevil populations in the United States; however, heavy reliance on prophylactic insecticide treatments as a sole strategy could destabilize management programs for this insect. The present research evaluated the compatibility of seed treatments with two other potential management tactics-plant resistance and shallow flooding-by conducting two split-plot experiments in 2009 and 2011. In both experiments, no substantial antagonism was found among the 3 different tactics. Statistical interactions in these experiments arose from the strong and persistent effects of chlorantraniliprole on larval densities rather than incompatibility of tactics. In 2009, weevil densities differed among varieties and were significantly lower on the cultivar "Jefferson." In 2011, weevil densities were reduced significantly in shallow-flooded plots compared to deep-flooded plots. Significant reductions in weevil numbers by chlorantraniliprole seed treatments, even at application rates 5 fold lower than commercially recommended rates, demonstrated the potential to reduce application rates of this highly potent larvicide. These latter results suggest that future studies on the relationship between chlorantraniliprole seed treatment rate and weevil fitness are warranted.

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Effect of Depth of Flooding on the Rice Water Weevil,Lissorhoptrus oryzophilus, and Yield of Rice

Cited by 11 publications

References 20 publications

Relationship between the occurrence of the rice water weevil and water depth in flooded rice crop

Relationship between the occurrence of the rice water weevil and water depth in flooded rice crop

The Use of Systemic Anthranilic Diamide and Neonicotinoid Seed Treatments in Rice Pest Management

Integrating flood depth and plant resistance with chlorantraniliprole seed treatments for management of rice water weevil, Lissorhoptrus oryzophilus (Coleoptera: Curculionidae)

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