Black spot is one of the most destructive diseases roses, causing premature defoliation, thus progressively weakening plant and even leading to death. This study aimed at identifying pathogen black on Rosa chinensis Jacq. cv. nhung (Hồng Nhung) R. var. minima Tỉ Muội) in Sa Đéc city, Đồng Tháp province, Vietnam, using a combination conidia morphology pathogenicity tests including detached leaf ...

Magnetic field plays an essential role for many species, including the migratory pest aphid. Our previous study investigated long-term exposure of static magnetic fields on growth development and productivity aphid Macrosiphum rosae, however, it is necessary to expand knowledge short-term insects a wider spectrum radiation. To achieve this, nymphs were exposed four induction at 0.065T, 0.1T, 0....

This work includes, identification eight species of Aphids (Homoptera: Aphididae) which collected from the leaves different plants in many localities Erbil governorate Kurdistan region-Iraq period May till July 2022, these are: Chaitophorus salijaponicus, Aphis fabae, Macrosiphum rosae, Capitophorus carduinus, Myzus persicae, ruborum, punca, and gossypii. The mitochondrial cytochrome C Oxidase ...

Two tropical macroalgae, Gracilaria salicornia and Padina sanctae-crusis, were exposed to varying concentrations of total Cu and subsequently subjected to photosynthesis-irradiance (P-I) response experiments. The study aimed to determine the effects of total Cu toxicity on the P-I model parameters and growth rate of the macroalgae. The photosynthetic efficiency (α) showed a decreasing pattern w...

introduction: macrosiphum rosae is one of the most important members of the aphididae (hemiptera) which feeds on plant juices, colonizes underside of leaves,stems and buds. this pest is a polyphagous insect vastly found in europe, asia and america. coccinella septempunctata (l.) (col: coccinellidae) is the successful biological control agent against aphids in under the greenhouse and field cond...

En México existen pocas o nulas colecciones en instituciones dedicadas al estudio de las arañas. Esto se refleja el limitado conocimiento sobre su biodiversidad, pues solo nueve entidades federativas 32 tienen documentada araneofauna. Hidalgo, número especies arañas conoce a partir dos recopilaciones bibliográficas la biodiversidad México. Por lo anterior, presente trabajo orientó ampliar esta ...