CSS 202 Lecture Notes - Lecture 4: Fusarium, Blissus Leucopterus, Aeration
Document Summary
Kentucky bluegrass (circa 1900 1950: regularly decimated by melting out disease, established (and reestablished) from seed, common, delta, prime, aboretum. Merion kentucky bluegrass: discovered in the early 1930s by joseph valentine(i. e. kentucky bluegrass that was immune to melting out disease) In early 1940"s, usda planted sample in arlington turf gardens: demonstrated excellent resistance to melting out, transplanted to various usda facilities and penn state univ, released in 1947. Merion kentucky bluegrass (1960"s and 1970"s: predominant kentucky bluegrass cultivar, kentucky bluegrass most popular choice for home lawns, genesis of the sod industry, grown as monostands, stripe smut came along and made merion impractical to grow. Stripe smut resistance: each resistant to stripe smut, from diverse genetic lineages, any particular turfgrass cultivar is either immune or susceptible to stripe smut; there is no partial resistance to the causal pathogen. In michigan, necrotic ring spot is the most troublesome disease of.
