A new virus disease of cotton found so far in several southeastern US states has attracted a lot of attention lately.  This is the “cotton blue disease”, which is caused by the cotton leaf roll dwarf virus.  Symptoms are seen in the new growth following virus infection and include stunting, blistering or crinkling of leaves (Figure 1), and downward cupping of leaves (Figure 2).  Other symptoms can include reddening, shortened internodes, upward cupping of leaves and abnormal top growth.  Plants may also exhibit a green-blue leaf… Read More →