a faunistic study of the order thysanoptera was conducted in cereal crop fields of the southwestern iranian province of khuzestan during 2007-2009. the species florithrips traegardhi (trybom) was collected from various grasses including corn, rice and wheat and later found its genus and species are new records for iran.

Drought stress is the main abiotic factor affecting rice production. Rain-fed upland rice which is grown on unbounded fields and totally dependent on rainfall for moisture is more prone to drought stress compared to rice from other ecosystems. However, upland rice has adapted to this limited water condition, thus are more drought tolerant than rice from other ecosystems. We performed the first ...

(eds M.C.S. Wopereis et al.) 95 as the Togo Hills – African rice continues to be present, and is locally important (Barry et al., 2007; Nuijten et al., 2009; Okry, 2011, Teeken et al. 2011; Temudo, 2011). In these older, established areas of rice cultivation, wild rice is sometimes still gathered locally (Richards, 1986; Nuijten, 2005). It is often assumed that in traditional agriculture crops ...

a delphi study was conducted in three phases to identify the driving and inhibiting factors of the development of mechanized cultivation of rice in guilan province. after consultation with professors and researchers in related institutions, 30 experts from the agricultural organization of guilan province and its subsidiary offices as well as faculty members of agricultural research centers of g...

A tmospheric methane is recognized as one of the most important greenhouse gases. Sources of atmospheric methane are about 1/3 natural and 2/3 human-caused (1). Its concentration has roughly doubled in the past 100 years. This increase and any future continuation of it can affect Earth’s climate through global radiative forcing (increased forcing to date is between 0.5 and 0.7 W m 2) (2). Thus,...

Bipolaris oryzae causes rice brown spot disease which reduces rice yield with substantial global impact. Streptomycetes isolated from rice fields of Guilan Province, Iran, showed antifungal activity against the tested pathogen. From five active Streptomyces spp. isolates, isolate G showed high antagonistic activity. To determine its taxonomical identity, its colonies character...

The microbial control of Anopheles gambiae and other mosquitoes with a granular formulation of Bacillus sphaericus (Vectolex) was evaluated in rice fields and swamps, located around the suburban region of Kingabwa-village in Kinshasa, Zaíre. Ten treatment cycles with 15-day intervals were carried out with the same application rate, 10 kg/ha, during the dry season (May to September 1991). The tr...