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United States Department of Agriculture

Agricultural Research Service

Title: Re-Establishment and Regrowth of Self-Seeded Italian Ryegrass

Authors
item Bartholomew, Paul
item Williams, Robert

Submitted to: Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting
Publication Type: Abstract Only
Publication Acceptance Date: October 24, 2004
Publication Date: November 1, 2004
Citation: Bartholomew, P.W., Williams, R.D. 2004. Re-establishment and regrowth of self-seeded Italian ryegrass [abstract]. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Paper No. 5636.

Interpretive Summary: Abstract Only

Technical Abstract: Self-reseeding may offer a low-input method of regenerating Italian ryegrass (Lolium multiflorum L.) for cool-season forage production in the Southern Great Plains, but management practices that enable this are not well defined. In its first production year, Italian ryegrass was subjected to initial-harvest treatments in mid-April, early-May or mid-May and to three levels of forage offtake, 100, 76 or 53% of standing crop, at each harvest. Following initial harvest, plots were allowed to regrow and set seed, prior to a second harvest in July. The crop re-established in early fall and forage production was measured under a uniform clipping regime during the following cool-season. Total forage yield of the re-established crop was greater on plots harvested in mid-April and early-May (2310 kg ha-1) than on plots harvested in mid-May (1810 kg ha-1) of the first production year. At the end of the second growing season the number of mature seed-bearing tillers produced (mean of 110 tillers m-2) did not differ significantly among first-year harvest and offtake treatments. Management during the first production year affected re-establishment and forage output of Italian ryegrass in the following cropping season, but did not appear to influence the potential for reseeding at the end of the second year.

Last Modified: 4/19/2014
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