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ARS Home » Southeast Area » Booneville, Arkansas » Dale Bumpers Small Farms Research Center » Research » Publications at this Location » Publication #214659

Title: Yield Components and Nutritive Value of Black Locust and Mimosa in Arkansas.

item Burner, David
item Carrier, Danielle
item Belesky, David
item Pote, Daniel - Dan
item Ares, Adrian
item Clausen, Ed

Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: 8/14/2007
Publication Date: 11/7/2007
Citation: Burner, D.M., Carrier, D.J., Belesky, D.P., Pote, D.H., Ares, A., Clausen, E.C. 2007. Yield Components and Nutritive Value of Black Locust and Mimosa in Arkansas.. American Society of Agronomy Meetings. November 7, 2007 271-9.

Interpretive Summary: See Abstract

Technical Abstract: Ranchers need to provide alternative livestock feeds when herbaceous forages become limiting in summer. We determined foliar yield components and nutritive value (in vitro digestibility [IVDMD], total nonstructural carbohydrate [TNC], N, robinin, and mimosine) of transplanted Robinia pseudoacacia (black locust) and Albizia julibrissin (mimosa) trees pollarded at 50 cm in Arkansas, USA. Black locust exceeded mimosa for every yield component (foliage mass/tree, leaves/shoot, shoots/tree, shoot mass/tree, basal area, and biomass/tree) except mass leaf. Projected foliar yields were 1900 and 1600 kg foliage/ha for black locust and mimosa, respectively, assuming a population of 12300 trees/ha. Mimosa foliage had greater IVDMD, TNC, and N digestibility than black locust. Mimosa foliage exceeded the nutritional N requirements of growing cattle (Bos taurus) and goats (Capra hircus), but protein supplementation would be needed for growing goats grazing black locust foliage. Concentrations of robin in and mimosine were below detectable limits in black locust and mimosa, respectively. The extract of black locust bark, but not foliage, was toxic to bioassayed monkey (Cercopithecus aethiops) cells. Either black locust or mimosa could provide moderate quantities of high quality, rotationally grazed forage for cattle or goats during summer months when herbaceous forage may in short supply.