The effect of yellow rust on the yield of spring and winter wheat

The Effect of Yellow Rust and its Control on the Yield of Joss Cambier Winter Wheat

“…The regression coefficients are higher than those calculated by Doling and Doodson (1968) but a valid comparison is not possible because the basis of estimating the per cent yellow rust on the foliage differed. The key used by the author was based on that suggested by the Plant Pathology Laboratory, Harpenden and used by the Agricultural Advisory and Development Service.…”

“…The race of rust identified was 3/55D (Joss Cambier type) and it was iirst recorded in 1969 and described by Chamberlain et al (1971). The disease can cause considerable yield losses (Batts 1957;Doling and Doodson, 1968) but the absence of satisfactory means of protecting susceptible cultivars makes the field evaluation of such losses difficult to determine.…”

Crop losses due to diseases and their implications for global food production losses and food security

“…Using another approach, known as the single-point or critical stage approach (Romig and Calpouzos 1970), yield loss estimates were based on stem rust assessment at the ¾ berry stage (Feeke's growth stage 10.54; DeWolf et al 2011). Vanderplank (1963) however suggested that yield loss of small grains should consider the entire crop development for polycyclic diseases, being either proportional to the area under the disease progress curve or proportional to disease severity at a critical development stage (Doling and Doodson 1968). The critical stage approach was more accurate for measuring wheat stem rust loss (Romig and Calpouzos 1970).…”

Effectiveness of fungicides in controlling stripe rust, leaf rust, and black point in soft white spring wheat

“…In the Pacific Northwest of the United States, this disease has caused yield losses in soft white spring wheat that ranged as high as 20 to 37.5%, depending on the time that symptoms developed and the severity of the disease (McNeal & Sharp 1963, Sunderman & Wise 1964, Griffey & Allan 1986). In England, Doling and Doodson (1968) reported that stripe rust reduced the yields of winter and spring wheat cultivars by as much as 45%. In addition to yield losses, grain from severely infected fields is often downgraded because of shrivelled kernels (Doling & Doodson 1968).…”

“…In England, Doling and Doodson (1968) reported that stripe rust reduced the yields of winter and spring wheat cultivars by as much as 45%. In addition to yield losses, grain from severely infected fields is often downgraded because of shrivelled kernels (Doling & Doodson 1968). The impact of stripe rust on the yield of soft white spring wheat in western Canada has not been previously reported.…”