Mango, the major fruit crop of India is affected by stone weevil, which can cause serious damage to the fruits. Acephate gives good control of mango stone weevil. Residues of acephate and its major metabolite, methamidophos were evaluated on mango fruits following repeated spray applications at the recommended dose (0.75 kg a.i. ha⁻¹) and double the recommended dose (1.5 kg a.i. ha⁻¹). Acephate residues mostly remained on the fruit peel which persisted up to 30 days. Movement of residues to the fruit pulp was detected after 1 day of application, increased to maximum of 0.14 and 0.26 mg kg⁻¹ after 3 days and reached to below detectable level (BDL) after 20 days. Methamidophos, a metabolite of acephate, was detected from 3rd day onwards in both peel and pulp and persisted up to 15 days. The residues (acephate + methamidophos) dissipated with the half-life of 5 days in peel and pulp. A safe pre-harvest interval of 30 days is recommended for consumption of mango fruits following treatment of acephate at the recommended dose of 0.75 kg a.i. ha⁻¹.
The present study demonstrates the pressure distribution on various faces of 'E' plan shaped tall buildings under wind excitation. Experimental and analytical studies were carried out using wind angles varying from 0° to 180° with an interval of 30°. The experimental study was conducted by open circuit boundary layer wind tunnel; whereas the analytical study was conducted with Computational Fluid Dynamics (CFD) technique using ANSYS CFX software package using k-ε turbulence model. A rigid model (made of perspex sheet) was used for wind tunnel test with a model scale of 1:300. Mean pressure coefficients of all the faces are found for all wind incidence angles and pressure contours are plotted on all the surfaces for 0° wind angles. Mean pressure coefficients are also calculated by CFD technique and the results have a good agreement with experimental results. Also, pressure contours on all the faces for a 0° wind angle are plotted and the contours are almost similar to those of experimental investigation. The flow pattern around the building model is also shown to understand the variation of pressures on different faces for a particular wind angle.
Residue levels of both trifloxystrobin and tebuconazole were below MRLs when grapes were harvested 30 days after the last of four applications of 175 g product ha(-1) (trifloxystrobin 44 g AI ha(-1), tebuconazole 88 g AI ha(-1)) under the semi-arid tropical climatic conditions of India.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.