Problem statement: Plant derived fungicides are now being subjects of many research groups. These secondary metabolites have enormous potential to inspire and influence modern agrochemical research. The study aimed to investigate the antifungal activity and their potential use as fungicides in the agriculture of crude extracts and purified compounds derived from plants used in traditional medic...

HOWELL, C. R., and R. D. STIPANOVIC. 1979. Control of Rhizoctonia solani on cotton seedlings with Pseudomonasfluorescens and with an antibiotic produced by the bacterium. Phytopathology 69:480-482. A strain of Pseudomonasfluorescens antagonistic to Rhizoctonia solani Alternaria sp., and Verticillium dahliae. A Fusarium sp. was only partially was isolated from the rhizosphere of cotton seedlings...

Phytoplankton samples were collected at Bahı́a Engaño, Chubut, Argentina (438S, 658W) at different times of the year to assess the combined effect of ultraviolet radiation (UVR, 280–400 nm) and vertical mixing (i.e., the depth of the upper mixed layer, UML) on photosynthesis. Samples were exposed to fixed and fluctuating radiation regimes in an illuminated chamber at 158C (photosynthetically ava...