Results 21 to 30 of about 8,450 (217)

Selective application of malathion: effect on boll weevil, non-target insects and natural enemies [PDF]

Brazilian Journal of Biology
Non-selective chemical insecticides are the main method to manage the major insect pest of cotton in the Americas, the boll weevil Anthonomus grandis (Boheman, 1843) (Coleoptera: Curculionidae).
S. F. Camelo, C. A. D. Silva, J. C. Zanuncio   +2 more
doaj   +1 more source

Reevaluation of the degree day base 60°F concept in US cotton (Gossypium hirsutum L.) production

Agronomy Journal, Volume 115, Issue 6, Page 3045-3061, November/December 2023., 2023
Abstract Cotton (Gossypium hirsutum L.) management decisions to abet early growth, fruit set, boll maturation, and harvest preparation are often facilitated by prediction of the date when critical developmental stages are reached. In the United States, growing degree days calculated with a base 60°F (DD60s) are commonly used to predict cotton ...
Tyson B. Raper, Rebecca Ward, Cheyenne Rushing, Steve Brown, Tyler Sandlin, Randy Norton, Bob Hutmacher, John L. Snider, Dan Fromme, Darrin Dodds, Michael Jones, Keith Edmisten, Guy Collins, Seth Byrd, James Griffin, Murilo Maeda, Hunter Frame, Brian Pieralisi, Calvin Meeks, Jared Whitaker, Robert L. Nichols, Gaylon Morgan   +21 more
wiley   +1 more source

Parasitoids of boll weevil Anthonomus grandis and resident predators in kaolin-treated cotton

Semina: Ciências Agrárias, 2013
Simultaneous use of control methods is essential to reach success in managing arthropod pests. The current study investigated the effect of kaolin application on resident predators in the cotton plant canopy and parasitism of boll weevil on abscised ...
Roberta Leme Santos, Robério Caros dos Santos Neves, Felipe Colares, Jorge Braz Torres   +3 more
doaj   +1 more source

Survival pattern of the boll weevil during cotton fallow in Midwestern Brazil [PDF]

Pesquisa Agropecuária Brasileira, 2017
: The objective of this work was to determine the survival pattern of the cotton boll weevil during fallow in Midwestern Brazil. The percentage of adults that remained in the cotton reproductive structures, the percentage of adults searching for shelters,
Carmen Silvia Soares Pires, Mayra Pimenta, Renata Alves da Mata, Lucas Machado de Souza, Débora Pires Paula, Edison Ryoiti Sujii, Eliana Maria Gouveia Fontes   +6 more
doaj   +1 more source

A CC-NB-ARC-LRR Gene Regulates Bract Morphology in Cotton. [PDF]

Adv Sci (Weinh)
This research article focuses on cotton bracts. The authors clone the gene of the frego bract, construct a single‐cell atlas of cotton and excavate genes related to bract type‐related and analyze the mechanism of the different cell morphology of the two bracts.
Yan S, Si Z, Qi G, Zang Y, Xuan L, He L, Cao Y, Li X, Zhang T, Hu Y.   +9 more
europepmc   +2 more sources

Artificial fruits and nuts for studying predation of cryptic prey: a case of 3D‐printed coffee berries for studying predation of coffee berry borer by flat bark beetles

Entomologia Experimentalis et Applicata, Volume 171, Issue 9, Page 716-720, September 2023., 2023
Studying the effects of predation in cryptic herbivorous insects is difficult because many spend all or most of their life cycle inside their host plant. Here, we designed and 3D‐printed artificial coffee berries to study predation of coffee berry borer, Hypothenemus hampei (Coleoptera: Curculionidae, Scolytinae) by flat bark beetles, Cathartus ...
Pei‐Shih Liang, Nicolas C. Ladizinsky, Glenn Asmus, Lindsey J. Hamilton, Angelita L. Acebes‐Doria, Nicholas C. Manoukis, Peter A. Follett   +6 more
wiley   +1 more source

Influence of two acyclic homoterpenes (Tetranorterpenes) on the foraging behavior of anthonomus grandis Boh [PDF]

, 2016
Previous studies have shown that the boll weevil, Anthonomus grandis, is attracted to constitutive and conspecific herbivore-induced cotton volatiles, preferring the blend emitted by cotton at the reproductive over the vegetative stage.
Birkett, M. A., Blassioli-Moraes, Maria Carolina, Borges, M., Laumann, R. A., Magalhães, D. M., Pickett, John, Woodcock, C. M.   +6 more
core   +1 more source

Prey‐mediated effects of mCry51Aa2‐producing cotton on the predatory nontarget bug Orius majusculus (Reuter)

Insect Science, Volume 30, Issue 4, Page 1191-1206, August 2023., 2023
While genetically engineered Bt cotton producing insecticidal mCry51Aa2 is protected against plant bugs, beneficial predatory pirate bugs are also sensitive if exposed continuously to high concentrations. When a mix of prey with high and low toxin content was provided, when alternative prey species with lower concentrations were provided, or when ...
Anja Boss, Jörg Romeis, Michael Meissle
wiley   +1 more source

Development, survival and morphometric parameters of boll weevil reared in different photoperiods [PDF]

Brazilian Journal of Biology
Third instar larvae of the cotton boll weevil, Anthonomus grandis grandis (Boheman) (Coleoptera: Curculionidae) are offered to the parasitoid Jaliscoa grandis Burks, 1954 (=Catolaccus grandis) (Hymenoptera: Pteromalidae) for mass-rearing.
M. H. P. Martínez, E. D. Vasconcelos, J. G. Di Stefano, J. C. Zanuncio, C. A. D. Silva   +4 more
doaj   +1 more source

Rational Practices to Manage Boll Weevils Colonization and Population Growth on Family Farms in the Semiárido Region of Brazil

Insects, 2014
Because boll weevil, Anthonomus grandis Boh. develops partially protected inside cotton fruiting structures, once they become established in a field, they are difficult to control, even with nearly continuous insecticide spray.
Robério C. S. Neves, Felipe Colares, Jorge B. Torres, Roberta L. Santos, Cristina S. Bastos   +4 more
doaj   +1 more source