نتایج جستجو برای: resistance to damping off and spider mite

تعداد نتایج: 18355683  

Journal: :caspian journal of environmental sciences 2005
m. montazeri h. hamdollah-zadeh

damping off caused by rhizoctonia solani (isolate ag4) constrains growing soybean in the north iranian province of golestan. the pathogen was grown on malt agar containing 0, 50, 100 or 200 ppm trifluralin then its vegetative growth and virulence were evaluated. the response of soybean cv. williams seedlings grown in soil containing 0, 0.5, 1 and 2 ?g ai g-1 trifluralin was investigated. on mal...

The well-known electro-mechanical analogy that equates current, voltage, resistance, inductance and capacitance to force, velocity, damping, spring constant and mass has a shortcoming in that mass can only be used to simulate a capacitor which has one terminal connected to ground. A new model that was previously proposed by the authors that combines a mass with a pulley (MP) is shown to simulat...

ژورنال: علوم آب و خاک 2006
پرویز طالبی چایچی, , کریم حداد ایرانی‌نژاد, , فریبا وفائی, , مصطفی ولیزاده, ,

During years 2000 and 2001, biology and population changes of two- spotted spider mite (T. urticae) was studied on five bean cultivars of two species at 25±1ºC temp., 45±4% RH and 15: 9 (L:D) photoperiod, using leaf disks made from 2-, 6- leaf and flowering stages of the plants. The mite mass rearing was carried out on tomato plants under the same environmental conditions and the effects of fee...

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