This article is about an area of Mexico City, for other uses read Polanco (disambiguation). Polanco is an upscale area in the Miguel Hidalgo borough of Mexico City, located north of Chapultepec Park and consisting of five official neighborhoods ( colonias ).olanco is served by the Polanco and Auditorio stations of the Mexico City metro (subway). Peseros (minibuses), city buses and trolleybuses ply numerous streets in Polanco continuing to and from other parts of the city.
Bean Root Rots. Many fungi, including Rhizoctonia solani, Pythium species and Fusarium solani, form species phaseoli, live in the soil and will infect young seedlings or the seeds of bean plants. Seedlings fail to emerge after planting when the seeds rot in the soil or young seedlings may be stunted.
Q. When I dug my carrots, I found galls or swelling on the roots. A. These are root knot nematodes. Root knot is a species of nematode which causes galls or swellings on plant roots. It restricts the uptake of nutrients from the root system to the foliage, resulting in a yellow and stunted plant.