scholarly journals Effects of Conspecific Herbivory and Mating Status on Host Searching and Oviposition Behavior ofPlutella xylostella(Lepidoptera: Plutellidae) in Relation to Its Host,Brassica oleracea(Brassicales: Brassicaceae)

2016 ◽  
Vol 99 (sp1) ◽  
pp. 159-165 ◽  
Author(s):  
Suk Ling Wee
Keyword(s):  
Brassica Oleracea ◽  
Oviposition Behavior ◽  
Host Searching ◽  
Mating Status

scholarly journals Biological Control May Fail on Pests Applied with High Doses of Insecticides: Effects of Sub-Lethal Concentrations of a Pyrethroid on the Host-Searching Behavior of the Aphid Parasitoid Aphidius colemani (Hymenoptera, Braconidae) on Aphid Pests

Agriculture ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 539
Author(s):  
Armando Alfaro-Tapia ◽  
Jeniffer K. Alvarez-Baca ◽  
Eduardo Fuentes-Contreras ◽  
Christian C. Figueroa
Keyword(s):  
Biological Control ◽  
Natural Enemies ◽  
Insect Pests ◽  
Oviposition Behavior ◽  
Rapid Evolution ◽  
Parasitoid Wasp ◽  
Host Searching ◽  
Aphid Parasitoid ◽  
Aphidius Colemani ◽  
Lethal Doses

The use of synthetic insecticides may cause failures in the biological control of insect pests due to undesired side effects on natural enemies and the rapid evolution of insecticide resistance in agroecosystems. Residues of neurotoxic insecticides can interfere with the recognition of chemical cues used by natural enemies to find pests. We investigated the effects of sub-lethal concentrations of the pyrethroid lambda-cyhalothrin on the interaction between the aphid parasitoid wasp Aphidius colemani and the peach potato aphid Myzus persicae. We studied changes in host-searching and oviposition behavior through laboratory bioassays when susceptible and kdr-resistant aphids are offered to parasitoid females, evaluating the effect of applying insecticides on the interacting species. The patch residence time, exploration, oviposition, and grooming were significantly disturbed when the parasitoids were offered resistant aphids sprayed with sub-lethal doses, but not when the parasitoids were offered susceptible M. persicae exposed to sub-lethal doses. We discuss how the effects of insecticides on parasitism behavior may result in failures of biological control if natural enemy populations are not adequately managed, particularly for the management of insecticide-resistant pest populations. Efforts to introduce biological control in integrated pest management (IPM) programs are also discussed.

Host-searching responses to herbivory-associated chemical information and patch use depend on mating status of female solitary parasitoid wasps

2010 ◽  
Vol 35 (3) ◽  
pp. 279-286 ◽  
Author(s):  
SOICHI KUGIMIYA ◽  
TAKESHI SHIMODA ◽  
ERIC WAJNBERG ◽  
MASAYOSHI UEFUNE ◽  
JUNJI TAKABAYASHI
Keyword(s):  
Chemical Information ◽  
Parasitoid Wasps ◽  
Host Searching ◽  
Mating Status ◽  
Patch Use ◽  
Solitary Parasitoid

Tronchuda cabbage (Brassica oleracea L. var. costata DC) leaf free amino acid profile

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
BM Silva ◽  
AP Oliveira ◽  
DM Pereira ◽  
C Sousa ◽  
RM Seabra ◽  
...  
Keyword(s):  
Amino Acid ◽  
Brassica Oleracea ◽  
Free Amino Acid ◽  
Free Amino ◽  
Amino Acid Profile ◽  
Tronchuda Cabbage ◽  
Brassica Oleracea L

EFFECT OF DIFFERENT DOSES OF BORON ON GROWTH AND YIELD OF OFF-SEASON CAULIFLOWER (BRASSICA OLERACEA VAR. BOTRYTIS) IN ARGHAKHANCHI, NEPAL

2020 ◽  
Vol 1 (1) ◽  
pp. 12-17
Author(s):  
Srijana Pandey ◽  
Sapana Parajuli ◽  
Biplov Oli ◽  
Surya Dhungana
Keyword(s):  
Brassica Oleracea ◽  
Growth Parameters ◽  
Block Design ◽  
Leaf Length ◽  
Growth And Yield ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Net Returns ◽  
Benefit Cost ◽  
Different Doses

The research was conducted at Beltari Sandhikharka-10, Arghakhanchi district to study about the effect of various doses of boron on growth and yield attributing characters of cauliflower (Brassica oleracea var. botrytis) during off-season from February to June in 2020. Five treatments; B0 (control/no application), B1: 2kg/ha, B2: 4kg/ha, B3: 6kg/ha, B4: 8kg/ha which are the different doses of boron application were laid out in Randomized Complete Block Design (RCBD) with 4 replications. The growth parameters like plant height, number of leaves per plant leaf length and leaf breadth of largest leaf were recorded multiple times with 15 days interval. Days to curd initiation and Days from curd initiation to harvest were recorded by regular field observation. The yield parameters; curd weight with leaves, Marketable curd weight, average curd yield, incidence of hollowing were recorded during harvest. The economics from application of boron doses in cauliflower production was obtained in terms of cost of cultivation, gross returns, net returns, and benefit cost ratio. The result showed that the growth and yield attributing characters of cauliflower were significantly affected by application of boron in which the value of these parameters was found significantly higher in B1 followed by other treatments. The average curd yield of cauliflower in B1 was found to be 12.39 mt/ha which was 48.92% higher than that of B0 with curd yield 8.32 mt/ha. Similarly, the net return was found significantly the highest in B1 and the lowest in B0. The result showed that application of boron in the range of 2-4 kg/ha is preferred to control and higher doses in respect of both productivity and economics.

Mentha x piperita volatiles promote Brassica oleracea-A pilot study for sustainable vegetable production

2018 ◽  
Vol 43 (1) ◽  
pp. 93-104 ◽  
Author(s):  
Andreas Ulbrich ◽  
Hannah Kahle ◽  
Philip Kramer ◽  
Margot Schulz
Keyword(s):  
Pilot Study ◽  
Brassica Oleracea ◽  
Vegetable Production ◽  
Mentha X Piperita

DESENVOLVIMENTO DE UMA EQUAÇÃO PARA CALCULAR A TAXA DE VARIAÇÃO DO CRESCIMENTO FOLIAR DA COUVE FOLHA (Brassica oleracea VAR. ACEPHALA) EM DIFERENTES SUBSTRATOS

2018 ◽  
Author(s):  
Gomes Francisco Mateus Medina ◽  
Chaves Davi Belchior ◽  
Silva Clélia Brasil Soares da ◽  
Quarto Renato Cesar de Carvalho ◽  
Simplício Antônio Alisson Fernandes
Keyword(s):  
Brassica Oleracea
Sign in / Sign up

Export Citation Format

Share Document