An investigation was carried out to evaluate the insecticidal activity of Allium sativum, Zingiber officinale and Nigella sativa extracts against the larvae of T. granarium under laboratory conditions in the University of Agriculture, Faisalabad, Pakistan during 2009-10. The highest concentration of (6 %) Z. officinale was found to be comparatively more toxic (16.70 %) than those of A. sativum (10.45 %) and N. sativa (5.49 %) at 96 hours exposure. Regarding latent effect of the test plant materials, Z. officinale gave significantly higher reduction (54.15 %) in F1 progeny than N. sativa (41.97 %) and A. sativum (32.19 %). The study reveals that Z. officinale had a strong latent effect against the larvae of the test pest. Further investigations on the efficacy of longer exposure in combination with higher concentrations of these extracts can be helpful to reduce the wheat store-insect damage. DOI: http://dx.doi.org/10.3329/agric.v11i1.15250 The Agriculturists 2013; 11(1) 103-111
International audienceThis chapter gives a detailed description of a test setup developed at KU Leuven for the launch and recovery of unpropelled tethered airplanes. The airplanes are launched by bringing them up to flying speed while attached by a tether to the end of a rotating arm. In the development of the setup, particular care was taken to allow experimental validation of advanced estimation and control techniques such as moving horizon estimation and model predictive control. A detailed overview of the hardware, sensors and software used on this setup is given in this chapter. The applied estimation and control techniques are outlined in this chapter as well, and an analysis of the closed loop performance is given
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