Results 121 to 130 of about 52,524 (279)

Manejo integrado de pragas do algodoeiro no Brasil. [PDF]

open access: yes, 2011
Introducao; Insetos-praga; Amostragem de pragas; Estrategias de controle; Considera?oes importantes; Perspectivas futuras;bitstream/item/33370/1/MIP-ALGODAO ...
ALMEIDA, R. P. de, SILVA, C. A. D. da
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Infestation of Anthonomus grandis (Coleoptera: Curculionidae) on re-sprout of cotton plants

open access: yesPesquisa Agropecuária Tropical, 2015
The destruction of cotton crop residues at the end of the crop cycle is a key strategy for the phytosanitary crop management, since its off-season re-sprout can provide sites for feeding and oviposition of pests such as the boll weevil.
José Fernando Jurca Grigolli   +5 more
doaj   +1 more source

Mechanical damage in cotton buds caused by the boll weevil

open access: yesPesquisa Agropecuária Brasileira, 2003
The boll weevil (Anthonomus grandis Boheman) causes high levels of bud abscission in cotton plants due to feeding or oviposition punctures. It has been reported that abscission is mainly due to enzymes present in the insect's saliva, but mechanical ...
Santos Roseane Cavalcanti   +3 more
doaj  

Arthropods biodiversity index in Bollgard (R) cotton (CRy1Ac) in Brazil [PDF]

open access: yes, 2013
Shannon-Wiener's diversity index (SWI) was used under untreated conditions of a cotton field during the 2006/2007 crop season in the Cerrado region, Brazil.
Degrande, P.E.   +4 more
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Monitoring cotton squares with opened and/or yellowed bracts to determine the need and efficency of chemical control against the cotton boll weevil

open access: yesBrazilian Journal of Biology
The technique of terrestrial sampling of boll weevil (BW) populations is expensive and inefficient over large areas, but may be cheaper and more efficient without involving the manipulation of cotton squares.
T. A. Lima   +2 more
doaj   +1 more source

Método de diagnóstico para el monitoreo de resistencia a insecticidas en poblaciones de "picudo del algodonero", Anthonomus grandis (Coleoptera: Curculionidae) A diagnostic test for insecticide resistance monitoring in "cotton boll weevil" Anthonomus grandis (Coleoptera: Curculionidae) populations

open access: yesRevista de la Sociedad Entomológica Argentina, 2009
El control de las poblaciones de Anthonomus grandis Boheman, por debajo de su umbral de daño económico durante el ciclo del cultivo del algodón, se realiza en forma efectiva hasta el momento, a través de insecticidas de síntesis.
Teodoro Stadler
doaj  

Alternative food sources and overwintering feeding behavior of the boll weevil, Anthonomus grandis boheman (coleoptera: curculionidae) underthe tropical conditions of central Brazil [PDF]

open access: hybrid, 2010
P. de A. Ribeiro   +7 more
openalex   +1 more source

Seasonal Changes in Chemical Composition of Eurasion Watermilfoil (Myriophyllum spicatum L.) and Water Temperature at Two Sites in northern California: implications for Herbivory [PDF]

open access: yes, 1999
We compared seasonal changes in Eurasian watermilfoil (Myriophyllum spicatum L.) characteristics and water temperature for a shallow poind in Davis, CA, and the Truckee River, near Tahoe City, CA. Tissue C and N were 15% lower in plants from the Truckee
Ksander, Gregory G., Spencer, David F.
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