Abstract
Climate change creates uncertainty for the future of animal agriculture and forage productivity. The use of palatable shrubs that can be browsed directly as a mid-story component in silvopastures may be one way to diversify resources and mitigate losses in forage productivity. While white mulberry (Morus alba) has been widely studied for its fodder potential, there remains a paucity of information for the native, shade tolerant red mulberry (M. rubra). We report on the initial growth, survival, biomass, and leaf nutritive value of M. rubra seedlings planted under a cherrybark oak (Quercus pagoda) canopy at four overstory densities: 3 × 3 m (D), 6 × 6 m (S–D), 9 × 9 m (S–O), and 12 × 12 m (O). Despite drought conditions, 81.25% of seedlings survived, with more seedlings surviving in S–O and O than in D. As canopy openness increased, stem diameter increased and specific leaf area decreased. Seedlings obtained greatest leaf biomass in S–O. Late summer nutritive value surpassed the quality of many common pasture forages. Crude protein was greater in S–D and D than it was in S–O and O. Acid detergent fiber was greatest in D and digestibility metrics did not differ between treatments. Our results indicate that production of M. rubra fodder can be optimized on this site at 66.21% Global Site Factor, an irradiance level that corresponds to around 500 trees ha−1. More research is needed to determine seedling response to repeated defoliation events. Additionally, information is needed on secondary metabolites and other anti-quality components that may reduce the value of this potential alternative forage source.
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The datasets generated and analyzed during the current study are available upon reasonable request of the leading author.
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The code generated during the current study is available upon reasonable request of the leading author.
References
Allard G, Nelson C, Pallardy S (1991) Shade effects on growth of tall fescue: II. Leaf gas exchange characteristics. Crop Sci 31:167–172
Broom DM, Galindo FA, Murgueitio E (2013) Biodiversity and good welfare for animals. Sustainable, efficient livestock production with high biodiversity and good welfare for animals. Proc R Soc 280:1–9
Buergler AL, Fike JH, Burger Ja, Feldhake CM, McKenna JR, Teutsch CD (2006) Forage nutritive value in an emulated silvopasture. Agron J 98:1265–1273. https://doi.org/10.2134/agronj2005.0199
Burgess KS, Husband BC (2006) Habitat differentiation and the ecological costs of hybridization: the effects of introduced mulberry (Morus alba) on a native congener (M. rubra). J Ecol 94:1061–1069. https://doi.org/10.1111/j.1365-2745.2006.01152.x
Burner D, Burke J (2012) Survival of bristly locust (Robinia hispida L.) in an emulated organic silvopasture. Nativ Plants J 13:195–200
Burton P, Bazzaz F (1991) Tree seedling emergence on interactive temperature and moisture gradients and in patches of old-field vegetation. Am J Bot 78:131–149. https://doi.org/10.2307/2445236
Dai A (2013) Increasing drought under global warming in observations and models. Nat Clim Chang 3:52–58. https://doi.org/10.1038/nclimate1633
Dailey D (2018) Missouri’s 2018 Drought differs from 2012 in varied impact. In: Drovers driv. Beef mark. https://www.drovers.com/article/missouris-2018-drought-differs-2012-varied-impact. Accessed 4 Feb 2019
Devendra C (2012) Intensification of integrated natural resources use and agricultural systems in the developing world. Agrotechnology 01:1–4. https://doi.org/10.4172/2168-9881.1000e101
Forwood JR, Owensby CE (1985) Nutritive value of tree leaves in the Kansas. J Range Manag 38:61–64
Fukui K (2000) Effects of temperature on growth and dry matter accumulation in mulberry saplings. Plant Prod Sci 3:404–409. https://doi.org/10.1626/pps.3.404
Hanson H (1917) Leaf-structure as related to environment. Am J Bot 4:533–560
Jones W, Anderson L, Ross M (1973) Bloat in cattle. New Zeal J Agric Res 16:441–446. https://doi.org/10.1080/00288233.1973.10421128
Jose S, Walter D, Kumar B (2018) Ecological considerations in sustainable silvopasture design and management. Agrofor Syst. https://doi.org/10.1007/s10457-016-0065-2
Kallenbach RL, Kerley MS, Bishop-Hurley GJ (2006) Cumulative forage production, forage quality and livestock performance from an annual ryegrass and cereal rye mixture in a Pine Walnut Silvopasture. Agrofor Syst 66:43–53. https://doi.org/10.1007/s10457-005-6640-6
Kephart K, Buxton D (1993) Forage quality responses of C3 and C4 perennial grasses to shade. Crop Sci 33:831–837
Kikvidze Z, Armas C (2010) Plant interaction indices based on experimental plant performance data. Posit Plant Interact Community Dyn, pp 17–37. https://doi.org/10.1201/9781439824955
Leafscan (2019) Leafscan. In: Leafscan App. https://www.leafscanapp.com/. Accessed 14 Feb 2019
Lin CH, Mcgraw ML, George MF, Garrett HE (2001) Nutritive quality and morphological development under partial shade of some forage species with agroforestry potential. Agrofor Syst 53:269–281. https://doi.org/10.1023/A:1013323409839
Loach K (1970) Shade tolerance in tree seedlings. New Phytol 69:273–286
Lovell ST, Wilson MH (2017) Multifunctional perennial cropping systems—supplemental design information
Makkar H (1989) Relationship of rumen degradability with microbial colonization, cell wall constituents and tannin levels in some tree leaves. Anim Prod, vol 49.
McClendon J, McMillen G (1982) The control of leaf morphology and the tolerance of shade by woody plants. Bot Gaz 143:79–83. https://doi.org/10.1086/337273
Moore KM, Barry TN, Cameron PN, Lopez-villalobos N, Cameron DJ (2003) Willow (Salix sp) as a supplement for grazing cattle under drought conditions. 104:1–11. https://doi.org/10.1016/S0377-8401(02)00326-7
Murgueitio E, Calle Z, Uribe F, Calle A, Solorio B (2011) Native trees and shrubs for the productive rehabilitation of tropical cattle ranching lands. For Ecol Manage 261:1654–1663. https://doi.org/10.1016/j.foreco.2010.09.027
Pang K, Van Sambeek JW, Navarrete-Tindall NE, Lin CH, Jose S, Garrett HE (2019) Responses of legumes and grasses to non-, moderate, and dense shade in Missouri, USA. I. Forage yield and its species-level plasticity. Agrofor Syst 93:11–24. https://doi.org/10.1007/s10457-017-0067-8
Papanastasis VP, Yiakoulaki MD, Decandia M, Dini-papanastasi O (2008) Integrating Woody Species into Livestock Feeding in the Mediterranean Areas of Europe 140:1–17. https://doi.org/10.1016/j.anifeedsci.2007.03.012
Paul C, Weber M (2016) Effects of planting food crops on survival and early growth of timber trees in eastern Panama. New For 47:53–72. https://doi.org/10.1007/s11056-015-9477-5
Pitta DW, Barry TN, Lopez-villalobos N, Kemp PD (2005) Effects on Ewe reproduction of grazing willow Fodder blocks during drought. Animal Feed Sci Technol 20:217–234. https://doi.org/10.1016/j.anifeedsci.2005.02.030
Pretzsch H (2009) Forest dynamics, growth and yield: from measurement to model. Springer-Verlag, Berlin Heidelberg, Berlin
Sadeghpour A, Jahanzad E, Lithourgidis AS, Hashemi M, Esmaeili A, Hosseini MB (2013) Forage yield and quality of barley-annual medic intercrops in semi-arid environments. Int J Plant Prod 8:77–89. https://doi.org/10.22069/ijpp.2014.1373
Samarakoon S (1990) Growth, morphology and nutritive quality of shaded Stenotaphrum secundatum. Axonopus compressus and Pennisetum clandestinum, J Agric Sci, p 114
Sánchez MD (2000) Mulberry: an exceptional forage available almost worldwide. World Rev Anim Prod 93:1–21
Sharma SK, Zote KK (2010) Mulberry: a multi-purpose tree species
Steel R, Torrie J (1980) Principles and procedures of statistics: a biometrical approach. McGraw-Hill, New York
Talamuci P, Pardini A (1999) Pastoral systems dominated by fodder crops harvesting and grazing. In: Dynamics and sustainability of Mediterranean pastoral systems, pp 29–44
Trenberth KE, Dai A, Van Der Schrier G, Jones PD, Barichivich J, Briffa KR, Sheffield J (2014) Global warming and changes in drought. Nat Clim Chang 4:17–22. https://doi.org/10.1038/nclimate2067
Vandermeulen S, Ramírez-Restrepo CA, Beckers Y, Claessens H, Bindelle J (2018a) Agroforestry for ruminants: a review of trees and shrubs as fodder in silvopastoral temperate and tropical production systems. Anim Prod Sci 58:767–777. https://doi.org/10.1071/AN16434
Vandermeulen S, Ramírez-Restrepo CA, Marche C, Decruyenaere V, Beckers Y, Bindelle J (2018b) Behaviour and browse species selectivity of heifers grazing in a temperate silvopastoral system. Agrofor Syst 92:705–716. https://doi.org/10.1007/s10457-016-0041-x
Wilson J (1996) Shade-stimulated growth and nitrogen uptake by pasture grasses in a subtropical environment. Austalian J Agric Res 47:1075–1093
Yiakoulaki MD (1995) Intake by goats grazing kermes oak shrublands with varying cover in Northern Greece. Small Rumin Res 17:223–228
Acknowledgements
This work would not have been possible without the generous support of a USDA Agricultural Research Service (ARS) grant. Special thanks to Jerry Van Sambeek, Barry Eschenbrenner, Aaron Templemire, Bo Young, Sam Sergent, and everyone else at the Horticulture and Agroforestry Research Center (HARC) who provided invaluable support in the field. Also, thanks to Michael C. Stambaugh for lending his camera and fisheye lens for hemispherical photographs.
Funding
This study was funded by a grant provided by the United States Department of Agriculture’s (USDA) Agricultural Research Service (ARS).
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Dibala, R., Jose, S., Gold, M. et al. Initial performance of red mulberry (Morus rubra L.) under a light gradient: an overlooked alternative livestock forage?. Agroforest Syst 96, 565–576 (2022). https://doi.org/10.1007/s10457-021-00699-3
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DOI: https://doi.org/10.1007/s10457-021-00699-3