منابع مشابه
Silicas for control of the poultry red mite Dermanyssus gallinae
Control of the poultry red mite Dermanyssus gallinae is a challenge for organic as well as conventional egg producers. In organic agriculture, control should be attempted by mechanically acting substances (e.g. oils or diatomaceous earth), before acaricides are applied. Diatomaceous earth (DE) without acaricides was at least as effective as DE supplemented with pyrethrum or essential oils and a...
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This paper applies option value theory to determine the timing and value of pesticides in controlling crop damage. Entomologists and economists have both sought to determine '~ction" or 'economic" thresholds which would trigger the application of a pesticide, or an alternative pest control policy. These concepts are reviewed, and the differences arising in each discipline are noted. Two mathema...
متن کامل1999 Conference on Control Applications 22 - 27 August 1999
This paper considers the fundamental design and modeling of the Caltech ducted fan. The Caltech ducted fan is a scaled model of the longitudinal axis of a ight vehicle. The purpose of the ducted fan is the research and development of new nonlinear ight guidance and control techniques for Uninhabited Combat Aerial Vehicles. It is shown that critical design relations must be satis ed in order tha...
متن کاملThe Effect of Copper Nano-capsules on the Control of Two Spotted Spider Mite (Tetranychusurticae)
Common bean (Phaseolus vulgaris L.) is one of the most important and widely cultivated Legume in the world. The two-spotted spider mite (TTSM), is one of the most important agricultural pests. This research provided some evidence of the applicability of CuO nano particles and nano capsule for controlling TTSM. To evaluate the effect of copper nano-capsules on the populations of TSSM from red be...
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s and Introductions Serologic and molecular investigations of a chimera N.A. MIFSUD, A.P. HADDAD, C.F. HART, R. HOLDSWORTH, J.A. CONDON, M. SWAIN, AND R.L. SPARROW Precipitation of serum proteins by polyethylene glycol (PEG) in pretransfusion testing J. HOFFER,W.P. KOSLOSKY, E.S. GLOSTER,T.M. DIMAIO, AND M.E. REID Hemochromatosis, iron, and blood donation: a short review A.C. FIELDS AND A.J. GR...
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ژورنال
عنوان ژورنال: Arthropod Management Tests
سال: 2000
ISSN: 2155-9856
DOI: 10.1093/amt/25.1.a23