The Use of Malathion Ulv for Boll Weevil Eradication PDF Download
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Author: Gerald H. McKibben
Publisher:
ISBN:
Category : Boll weevil
Languages : en
Pages : 110
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Author: Gerald H. McKibben
Publisher:
ISBN:
Category : Boll weevil
Languages : en
Pages : 110
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Author: Dan A. Wolfenbarger
Publisher:
ISBN:
Category : Cotton
Languages : en
Pages : 16
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Book Description
Methyl parathion in low-volume (LV) spray was more effective than malathion against larvae of tobacco budworm and bollworm in the laboratory. In topical applications, malathion and methyl parathion were more toxic than malaoxon and methyl paraoxon to the tobacco budworm and the bollworm. Topical applications of malathion, malaoxon, methyl parathion, and methyl paraoxon killed greater percentages of larvae of the bollworm than of the tobacco budworm.
Author: Karl Mierzejewski
Publisher:
ISBN:
Category : Aerial spraying and dusting in agriculture
Languages : en
Pages : 34
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Author: James Joseph Butler
Publisher:
ISBN:
Category :
Languages : en
Pages :
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The boll weevil (Anthonomus grandis grandis Boheman) is currently under eradication in the U.S. The eradication program is implemented by means of area-wide applications of malathion ULV. Frequent applications of this insecticide result in high mortality of many beneficial insects, and a greater risk of secondary pest outbreaks. Notable among the latter are the outbreaks of beet armyworm (Spodoptera exigua Hübner) and cotton aphid (Aphis gossypii Glover) in the Lower Rio Grande Valley in 1995. The present study (i) compared densities of beneficial and pest insect and spider populations between cotton fields in eradication and non-eradication areas; (ii) evaluated the use of beneficial cotton arthropod population densities as indicators of pest damage risks from cotton aphid, beet armyworm, bollworm (Helicoverpa zea Boddie), and other worms (Estigmene acrea Drury, Pseudoplusia includens Walker, and Trichoplusia ni Hübner); and (iii) evaluated the effects of malathion ULV on the red imported fire ant (Solenopsis invicta Buren) a key arthropod predator in cotton agroecosystems. Studies were conducted in central Texas, in the vicinities of College Station and Dallas, during 2002 and 2003. Results showed that a majority of cotton predators were negatively impacted by malathion ULV applications. However, convergent lady beetle (Hippodamia convergens Guérin-Méneville) densities were greater in active eradication fields than inactive fields. Stepwise regression analyses identified densities of lacewing (Chrysoperla carnea Stephens) larvae and lady beetle larvae (H. convergens, Coleomegilla maculata De Geer, Harmonia axyridis Pallas, and Coccinella septempunctata L.) as predictors of cotton aphid density, and density of total spiders as predictors of bollworm density. Predictors of beet armyworm or other worm densities could not be determined. This study demonstrated malathion ULV was highly toxic to fire ants, and could repel ants from treated surfaces. Malathion ULV reduced the number of foraging fire ants in the cotton canopy for three weeks and reduced fire ant predation of beet armyworm eggs. Predictors of secondary pest densities have been suggested which, if utilized, may help to prevent the occurrence of secondary pest outbreaks under boll weevil eradication. Validation of these predictors should be preformed before implementing them into an eradication program.
Author: Opender Koul
Publisher: CABI
ISBN: 1845933729
Category : Technology & Engineering
Languages : en
Pages : 614
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This book aims (1) to lay out the historical underpinnings of the areawide pest (including weeds, plant and stored grain insect pests) management (AWPM) and to highlight current activity in the field; (2) to delve into concepts that have direct impact on the successful implementation of AWPM, which include: (i) biological and ecological concepts important for understanding the dynamics of populations in spatially heterogeneous environments; (ii) the critical role of inter-agency and multidisciplinary interactions in the development and implementation of AWPM programmes, which are often complex inter-agency and intergovernmental endeavours; (iii) the roles of modelling, meteorology and databases in AWPM programmes which, by their nature, are information intensive; and (iv) the importance of economic and sociological evaluation in successful AWPM implementation; and (3) to compile recent case examples of pest management programmes that have used the AWPM approach. A survey in presented on a wide variety of programmes developed for protecting agricultural and natural resource systems and which use a wide range of pest management tactics.
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 252
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Author:
Publisher:
ISBN:
Category : Boll weevil
Languages : en
Pages : 180
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Author:
Publisher:
ISBN:
Category : Boll weevil
Languages : en
Pages : 3
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Author:
Publisher:
ISBN:
Category : Environmental toxicology
Languages : en
Pages : 332
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
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Book Description
