Quality of lawn composed of different creeping bentgrass (Agrostis stolonifera L.) varieties for the putting green golf course in Moscow region
The environmental test of 19 creeping bentgrass varieties was conducted on the golf course in the Moscow region in 2010-2012. It was found that different varieties of creeping bentgrass are the most susceptible to winter diseases, pathogens which are Microdochium nivale, Typhula incarnata and Typhula ishikariensis. The degree of creeping bentgrass susceptibility depends on meteorological conditions. In 2011 varieties Tyee SR1150 were more susceptible to diseases, and in 2012 - L-93 and Seaside II. The greatest resistance to disease showed Penn A-1. In summer 2011 the most susceptible varieties were such as Tyee and T-1 (15.3 and 11.3%, respectively), however, in 2012 susceptibility rate did not exceed 5%. Stands of the highest quality with the overall decoration, density and resistance to disease on greens were obtained with varieties Penn A-1, Alpha, Cobra nova, Crystal bluelinks, Pennlinks II. As an alternative to creeping bentgrass for growing lawns such varieties of red fescue as Bardiva, J-5, Bacayenne can be recommended as they are slightly damaged by winter disease (no more than 3% of projective plant cover) and generate high-quality grasslands throughout the growing period. Common bentgrass was hardly damaged by winter illnesses and formed low quality stands. Velvet bentgrass Legendary gives way to red fescue judging by the general decorative effect, but surpasses the varieties of colonial bentgrass by this parameter.