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Publication Date
1997
Location
Manitoba and Saskatchewan
Description
The effect of Autumn grass regrowth interval on herbage production was studied during the Autumn/Winter periods of 1992/93 and 1993/ 94. Treatments, consisting of continual grass growth intervals ranging from 3 to 22 weeks after September 1, were used to examine the effects of Autumn grass regrowth intervals on herbage production. Herbage dry matter accumulation increased linearly from weeks 3 to 12, then plateaued and began to decrease after week 15 (mid- December). Dead material increased over time. Repeatedly harvested swards (every, 3, 4 or 5 weeks) generally produced less (P<0.05) herbage dry matter than corresponding continual growth treatments. Sward digestibility remained high (780 g/kg) for 9 to 10 weeks) and then declined. Highest digestibilities were seen on the more frequently defoliated treatments. Spring herbage production was highest in treatments which had been harvested under a long regrowth interval during the previous autumn.
Citation
O'Riordan, Edward G., "Effects of Regrowth Interval in the Autumn on Growth of Grass in the Autumn/Winter Period" (1997). IGC Proceedings (1985-2023). 22.
(URL: https://uknowledge.uky.edu/igc/1997/session29/22)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Effects of Regrowth Interval in the Autumn on Growth of Grass in the Autumn/Winter Period
Manitoba and Saskatchewan
The effect of Autumn grass regrowth interval on herbage production was studied during the Autumn/Winter periods of 1992/93 and 1993/ 94. Treatments, consisting of continual grass growth intervals ranging from 3 to 22 weeks after September 1, were used to examine the effects of Autumn grass regrowth intervals on herbage production. Herbage dry matter accumulation increased linearly from weeks 3 to 12, then plateaued and began to decrease after week 15 (mid- December). Dead material increased over time. Repeatedly harvested swards (every, 3, 4 or 5 weeks) generally produced less (P<0.05) herbage dry matter than corresponding continual growth treatments. Sward digestibility remained high (780 g/kg) for 9 to 10 weeks) and then declined. Highest digestibilities were seen on the more frequently defoliated treatments. Spring herbage production was highest in treatments which had been harvested under a long regrowth interval during the previous autumn.
