scholarly journals Analysis of pesticide residues in strawberries and soils by GC-MS/MS, LC-MS/MS and two-dimensional GC-time-of-flight MS comparing organic and integrated pest management farming

2014 ◽  
Vol 31 (2) ◽  
pp. 262-270 ◽  
Author(s):  
Virgínia C. Fernandes ◽  
Steven J. Lehotay ◽  
Lucía Geis-Asteggiante ◽  
Hyeyoung Kwon ◽  
Hans G.J. Mol ◽  
...  
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Pesticide Residues ◽  
Time Of Flight ◽  
Two Dimensional

scholarly journals A Holling Type II Discrete Switching Host-Parasitoid System with a Nonlinear Threshold Policy for Integrated Pest Management

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Mengqi He ◽  
Sanyi Tang ◽  
Robert A. Cheke
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Period Doubling ◽  
Host Population ◽  
Type Ii ◽  
Two Dimensional ◽  
Switching System ◽  
Dimensional Parameter ◽  
Threshold Policy ◽  
Nonlinear Switching

A nonlinear discrete switching host-parasitoid model with Holling type II functional response function, in which the switch is guided by an economic threshold (ET), is proposed. Thus, if the weighted density of two generations of the host population increases and exceeds the ET, then integrated pest management (IPM) measures are enacted, i.e., biological and chemical measures are implemented together, assuming that the chemical immediately precedes the biological inputs to avoid pesticide-induced deaths of the natural enemies. First, the existence and local stability of the equilibria of two subsystems were studied, and the existence and coexistence of several types of equilibria of a nonlinear switching system were analysed. Next, the nonlinear switching system was investigated by numerical simulation, showing that the system exhibits quite complex dynamic behaviour. A two-dimensional bifurcation diagram revealed the existence and coexistence regions of different types of equilibria including regular and virtual equilibria. Moreover, period-adding bifurcations in two-dimensional parameter spaces were found. One-dimensional bifurcation diagrams revealed that the system has periodic, quasiperiodic, and chaotic solutions, Neimark–Sacker bifurcation, multiple coexisting attractors, period-doubling bifurcations, period-halving bifurcations, and so on. Finally, the initial densities of hosts and parasitoids associated with host outbreaks and their biological implications are discussed.

scholarly journals Pesticide residues in Portuguese strawberries grown in 2009–2010 using integrated pest management and organic farming

2012 ◽  
Vol 19 (9) ◽  
pp. 4184-4192 ◽  
Author(s):  
Virgínia C. Fernandes ◽  
Valentina F. Domingues ◽  
Nuno Mateus ◽  
Cristina Delerue-Matos
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Organic Farming ◽  
Pesticide Residues

Determination of Pesticide Residues in Integrated Pest Management and Nonintegrated Pest Management Samples of Apple (Malus pumilaMill.)

2009 ◽  
Vol 57 (23) ◽  
pp. 11277-11283 ◽  
Author(s):  
Shashi Bala Singh ◽  
Irani Mukherjee ◽  
Jaya Maisnam ◽  
Praveen Kumar ◽  
Madhuban Gopal ◽  
...  
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Pesticide Residues

scholarly journals Analysis of pesticide residues in honeybee (Apis mellifera L.) and in corbicular pollen. Exposure in citrus orchard with an integrated pest management system

Talanta ◽  
2019 ◽  
Vol 204 ◽  
pp. 153-162 ◽  
Author(s):  
Ana Isabel García-Valcárcel ◽  
Maria Teresa Martínez-Ferrer ◽  
José Miguel Campos-Rivela ◽  
Maria Dolores Hernando Guil
Keyword(s):  
Apis Mellifera ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Pesticide Residues ◽  
Management System ◽  
Citrus Orchard ◽  
Pollen Exposure
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