Four paddy fields in Guilan province in the north of Iran seasonally were sampled from April 2008 to January 2009. Twenty-two morphospecies belonging to three families of the heterocystous blue-green algae were identified. Fourteen species and one variety of these taxa are new record for Iran. Among the families Nostocaceae with six genera and 16 species showed the highest species richness.

Agricultural production has intensified over the last century both across increasingly homogenized landscapes and at field level. This study analyzes effects of land-use intensity landscape local scales on main insect pests, predators yield grain sorghum as a summer crop in Uruguay. It represents one very few studies focused reduced system other than organic agriculture adds information from an...

erodium (geranaiceae) species are distributed in different habitats of iran. some species are of medicinal importance while some are well known weeds. there are no chromosome counts for erdoium species of iran. chromosome numbers are given for six taxa of erodium (geraniaceae) from iran: e. cicutarium (2n=36), e. ciconium(2n=18), e. malacoides (2n=20), e. moschatum (2n=20), e. neuradifolium (2n...

1049-9644/$ see front matter Published by Elsevier doi:10.1016/j.biocontrol.2009.05.016 * Tel.: +1 605 693 5211; fax: +1 605 693 5240. E-mail address: [email protected] Non-prey foods are an integral component of the diets of most predaceous coccinellids. Under field conditions, numerous coccinellids consume nectar, honeydew, pollen, fruit, vegetation, and fungus. These non-prey fo...

a survey was conducted to determine the species of the genus lissonota gravenhorst, 1829 in two iranian southern provinces of fars and hormozgan from february 2011 through august 2013. six species were identified of which five species are recorded for the first time from iran. the newly recorded species are as follows: lissonota bivittata gravenhorst, 1829, l. clypeator gravenhorst, 1820, l. im...

Generalist predators are widely acknowledged to contribute valuable levels of biological control in agroecosystems throughout the world. Although their feeding habits can result in the rejection of target pests in favor of preferred and often more nutritious non-pest prey, these natural enemies are capable of colonizing habitats prior to the arrival of pests by subsisting on alternative sources...

Abstract Background The Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Liviidae) is an insect pest species responsible for damages of fruit quality and tree health. This a vector bacteria ‘ Candidatus Liberibacter’ spp . putative causal agent greening disease known as Huanglongbing (HLB), considered one the most destructive diseases orchards worldwide. Disease management mainly bas...