Sowing configuration affects competition and persistence of lucerne (Medicago sativa) in mixed pasture swards
Richard C. Hayes
A E F , Matthew T. Newell B , Keith G. Pembleton C , Mark B. Peoples D and Guangdi D. Li A
+ Author Affiliations
- Author Affiliations
A NSW Department of Primary Industries, Wagga Wagga Agricultural Institute, Pine Gully Road, Wagga, NSW 2650, Australia.
B NSW Department of Primary Industries, Cowra Agricultural Research and Advisory Station, Binni Creek Road, Cowra, NSW 2794, Australia.
C University of Southern Queensland, School of Sciences and Centre for Sustainable Agricultural Systems, West St, Toowoomba, Qld 4350, Australia.
D CSIRO Agriculture and Food, GPO Box 1700, Canberra, ACT 2601, Australia.
E University of Tasmania, Private Bag 3523, Burnie, Tas. 7320, Australia.
F Corresponding author. Email: richard.hayes@dpi.nsw.gov.au
Crop and Pasture Science - https://doi.org/10.1071/CP20270
Submitted: 27 July 2020 Accepted: 5 November 2020 Published online: 25 March 2021
Abstract
Spatial separation of species at sowing has been proposed as a means of managing interspecific competition in mixed swards. This study examined the effect of row configuration on persistence of lucerne (Medicago sativa L.) in pastures and pasture–cover crop mixtures at three sites in the Central West, and in pasture mixtures at three sites in the Riverina, New South Wales, Australia. Lucerne density, taproot diameter, groundcover, and spatial distribution relative to the original drill row were measured at all sites, and plant-available soil water and light interception during spring were assessed at some sites. Row configuration (alternate or mixed drill rows) did not affect lucerne persistence; however, where lucerne seed was concentrated in every third drill row, intraspecific competition led to increased lucerne mortality. This was estimated to occur at densities >28 plants/m drill row. A lucerne density of ~55 plants/m2 in every or alternate drill rows (at row spacings of 250 mm) would likely achieve maximum lucerne production in the semi-arid environments tested, subject to the chance event of favourable conditions in the period after sowing that would maintain that density (e.g. cumulative summer rainfall >100 mm and summer day degrees <2160°C in 2 years at Cowra). The presence of a cover crop in the establishment year reduced lucerne density by 39% compared with pasture only, regardless of row configuration. Changed row configuration did not reduce competition for light under a cover crop, but there was a small increase in available soil water of up to 4.9 mm in the 0–1.15 m depth, mainly during the first summer, where pasture was sown in alternate compared with mixed drill rows with a cover crop. Soil was drier in pasture-only treatments than those with a cover crop, attributable to increased lucerne density and lower levels of litter cover on the soil surface. Pasture species remained largely confined to the original drill row, especially in drier environments, highlighting the importance of narrower row spacings for pasture establishment. In addition, we determined a mathematical relationship between lucerne density and the non-destructive measure of basal frequency; this relationship could be applied in mature lucerne stands with densities ≤80 plants/m2.
Keywords: ground cover, soil water, alfalfa, cover crop.
References
Bedoussac L, Journet E-P, Hauggaard-Nielsen H, Naudin C, Corre-Hellou G, Jensen ES, Prieur L, Justes E (2015) Ecological principles underlying the increase of productivity achieved by cereal–grain legume intercrops in organic farming. A review. Agronomy for Sustainable Development 35, 911–935.| Ecological principles underlying the increase of productivity achieved by cereal–grain legume intercrops in organic farming. A review.Crossref | GoogleScholarGoogle Scholar |
Boschma SP, Lodge GM, Harden S (2010) Seedling competition of lucerne in mixtures with temperate and tropical pasture species. Crop & Pasture Science 61, 411–419.
Bowman AM, Peoples MB, Smith W, Brockwell J (2002) Factors affecting nitrogen fixation by dryland lucerne in central-western New South Wales. Australian Journal of Experimental Agriculture 42, 439–451.
| Factors affecting nitrogen fixation by dryland lucerne in central-western New South Wales.Crossref | GoogleScholarGoogle Scholar |
Brummer EC, Bouton JH (1991) Plant traits associated with grazing-tolerant alfalfa. Agronomy Journal 83, 996–1000.
| Plant traits associated with grazing-tolerant alfalfa.Crossref | GoogleScholarGoogle Scholar |
Butler D (2020) ‘Package ‘ASReml’ 4.1.0.130.’ (VSN International: Hemel Hempstead, UK)
Butler TJ, Stein JD, Interrante SM, Malinowski DP (2011) Novel approaches to establishing alfalfa–tall fescue pastures in the Southern Great Plains. Forage and Grazinglands 9,
| Novel approaches to establishing alfalfa–tall fescue pastures in the Southern Great Plains.Crossref | GoogleScholarGoogle Scholar |
Christian KR (1977) Effects of the environment on the growth of alfalfa. Advances in Agronomy 29, 183–227.
| Effects of the environment on the growth of alfalfa.Crossref | GoogleScholarGoogle Scholar |
Donald C (1954) Competition among pasture plants. II. The influence of density on flowering and seed production in annual pasture plants. Australian Journal of Agricultural Research 5, 585–597.
| Competition among pasture plants. II. The influence of density on flowering and seed production in annual pasture plants.Crossref | GoogleScholarGoogle Scholar |
Glendening GE (1942) Germination and emergence of some native grasses in relation to litter cover and soil moisture. Agronomy Journal 34, 797–804.
| Germination and emergence of some native grasses in relation to litter cover and soil moisture.Crossref | GoogleScholarGoogle Scholar |
Hakl J, Pisarčik M, Fuksa P, Šantrůček J (2018) Development of lucerne root morphology traits in lucerne-grass mixture in relation to forage yield and root disease score. Field Crops Research 226, 66–73.
| Development of lucerne root morphology traits in lucerne-grass mixture in relation to forage yield and root disease score.Crossref | GoogleScholarGoogle Scholar |
Hayes RC, Li GD, Dear BS, Conyers MK, Virgona JM, Tidd J (2010) Perennial pastures for recharge control in temperate drought-prone environments. Part 2: soil drying capacity of key species. New Zealand Journal of Agricultural Research 53, 327–345.
| Perennial pastures for recharge control in temperate drought-prone environments. Part 2: soil drying capacity of key species.Crossref | GoogleScholarGoogle Scholar |
Hayes RC, Li GD, Conyers MK, Virgona JM, Dear BS (2016) Lime increases productivity and the capacity of lucerne (Medicago sativa L.) and phalaris (Phalaris aquatica L.) to utilise stored soil water on an acidic soil in south-eastern Australia. Plant and Soil 400, 29–43.
| Lime increases productivity and the capacity of lucerne (Medicago sativa L.) and phalaris (Phalaris aquatica L.) to utilise stored soil water on an acidic soil in south-eastern Australia.Crossref | GoogleScholarGoogle Scholar |
Hayes RC, Newell MT, Crews TE, Peoples MB (2017a) Perennial cereal crops: an initial evaluation of wheat derivatives grown in mixtures with a regenerating legume. Renewable Agriculture and Food Systems 32, 276–290.
| Perennial cereal crops: an initial evaluation of wheat derivatives grown in mixtures with a regenerating legume.Crossref | GoogleScholarGoogle Scholar |
Hayes RC, Li GD, Sandral GA, Swan TD, Price A, Hildebrand S, Goward L, Fuller C, Peoples MB (2017b) Enhancing composition and persistence of mixed pasture swards in southern New South Wales through alternative spatial configurations and improved legume performance. Crop & Pasture Science 68, 1112–1130.
| Enhancing composition and persistence of mixed pasture swards in southern New South Wales through alternative spatial configurations and improved legume performance.Crossref | GoogleScholarGoogle Scholar |
Hayes RC, Li GD, Norton MR, Culvenor RA (2018) Effects of contrasting seasonal growth patterns on composition and persistence of mixed grass–legume pastures over 5 years in a semi‐arid Australian cropping environment. Journal of Agronomy & Crop Science 204, 228–242.
| Effects of contrasting seasonal growth patterns on composition and persistence of mixed grass–legume pastures over 5 years in a semi‐arid Australian cropping environment.Crossref | GoogleScholarGoogle Scholar |
Hayes RC, Li GD, Rawnsley RP, Corkrey R, Peoples MB (2020a) The legacy of pasture drill rows on soil chemical characteristics and subsequent wheat production. Plant and Soil 455, 319–337.
| The legacy of pasture drill rows on soil chemical characteristics and subsequent wheat production.Crossref | GoogleScholarGoogle Scholar |
Hayes RC, Gupta VVSR, Li GD, Peoples MB, Rawnsley RP, Pembleton KG (2020b) Contrasting soil microbial abundance and diversity on and between pasture drill rows in the third growing season after sowing. Renewable Agriculture and Food Systems First View, 1–10.
| Contrasting soil microbial abundance and diversity on and between pasture drill rows in the third growing season after sowing.Crossref | GoogleScholarGoogle Scholar |
Hunt JR, Swan AD, Fettell NA, Breust PD, Menz ID, Peoples MB, Kirkegaard JA (2016) Sheep grazing on crop residues do not reduce crop yields in no-till, controlled traffic farming systems in an equi-seasonal rainfall environment. Field Crops Research 196, 22–32.
| Sheep grazing on crop residues do not reduce crop yields in no-till, controlled traffic farming systems in an equi-seasonal rainfall environment.Crossref | GoogleScholarGoogle Scholar |
Jeffrey SJ, Carter JO, Moodie KB, Beswick AR (2001) Using spatial interpolation to construct a comprehensive archive of Australian climate data. Environmental Modelling and Software 16, 309–330.
| Using spatial interpolation to construct a comprehensive archive of Australian climate data.Crossref | GoogleScholarGoogle Scholar |
Lamb JFS, Samac DA, Barnes DK, Henjum KI (2000) Increased herbage yield in alfalfa associated with selection for fibrous and lateral roots. Crop Science 40, 693–699.
| Increased herbage yield in alfalfa associated with selection for fibrous and lateral roots.Crossref | GoogleScholarGoogle Scholar |
Latta RA, Blacklow L-J (2001) Reducing the cost of lucerne establishment in Western Australia. In ‘Proceedings of the 10th Australian Agronomy Conference’. Hobart, Tas. (Australian Society of Agronomy) http://agronomyaustraliaproceedings.org/images/sampledata/2001/3/d/latta.pdf
Lattimore MA, McCormick L (2012) Pasture varieties used in New South Wales 2012–13. Published jointly by NSW Department of Primary Industries and the Grassland Society of NSW Inc., New South Wales.
Lodge G, Gleeson A (1984) A comparison of methods of estimating lucerne population for monitoring persistence. Australian Journal of Experimental Agriculture 24, 174–177.
| A comparison of methods of estimating lucerne population for monitoring persistence.Crossref | GoogleScholarGoogle Scholar |
McCormick JI, Hayes RC, Li GD, Norton MR (2014) A review of pasture establishment by undersowing with special reference to the mixed farming zone of south-eastern Australia. Crop & Pasture Science 65, 956–972.
| A review of pasture establishment by undersowing with special reference to the mixed farming zone of south-eastern Australia.Crossref | GoogleScholarGoogle Scholar |
Palmer TP, Wynn-Williams RB (1976) Relationship between density and yield of lucerne. New Zealand Journal of Experimental Agriculture 4, 71–77.
| Relationship between density and yield of lucerne.Crossref | GoogleScholarGoogle Scholar |
Pembleton KG, Hills JL, Freeman MJ, McLaren DK, French M, Rawnsley RP (2016) More milk from forage: milk production, blood metabolites, and forage intake of dairy cows grazing pasture mixtures and spatially adjacent monocultures. Journal of Dairy Science 99, 3512–3528.
| More milk from forage: milk production, blood metabolites, and forage intake of dairy cows grazing pasture mixtures and spatially adjacent monocultures.Crossref | GoogleScholarGoogle Scholar | 26923052PubMed |
Peoples MB, Brockwell J, Hunt JR, Swan AD, Watson L, Hayes RC, Li GD, Hackney B, Nuttall JG, Davies SL, Fillery IRP (2012) Factors affecting the potential contributions of N2 fixation by legumes in Australian pasture systems. Crop & Pasture Science 63, 759–786.
Ridley AM, Christy B, Dunin FX, Haines PJ, Wilson KF, Ellington A (2001) Lucerne in crop rotations on the Riverine Plains. 1. The soil water balance. Australian Journal of Agricultural Research 52, 263–277.
| Lucerne in crop rotations on the Riverine Plains. 1. The soil water balance.Crossref | GoogleScholarGoogle Scholar |
Rossiter RC (1961) The influence of defoliation on the components of seed yield in swards of subterranean clover (Trifolium subterraneum L.). Australian Journal of Agricultural Research 12, 821–833.
| The influence of defoliation on the components of seed yield in swards of subterranean clover (Trifolium subterraneum L.).Crossref | GoogleScholarGoogle Scholar |
Sandral GA, Dear BS, Virgona JM, Swan AD, Orchard BA (2006) Changes in soil water content under annual- and perennial-based pasture systems in the wheatbelt of southern New South Wales. Australian Journal of Agricultural Research 57, 321–333.
| Changes in soil water content under annual- and perennial-based pasture systems in the wheatbelt of southern New South Wales.Crossref | GoogleScholarGoogle Scholar |
Santhirasegaram K, Black JN (1967) Competition between wheat and undersown pasture in the year of sowing and the effect of undersowing on the yield of pasture in the following year. Journal of the British Grassland Society 22, 239–244.
| Competition between wheat and undersown pasture in the year of sowing and the effect of undersowing on the yield of pasture in the following year.Crossref | GoogleScholarGoogle Scholar |
Suzuki M (1991) Effects of stand age on agronomic, morphological and chemical characteristics of alfalfa. Canadian Journal of Plant Science 71, 445–452.
| Effects of stand age on agronomic, morphological and chemical characteristics of alfalfa.Crossref | GoogleScholarGoogle Scholar |
Swan AD, Peoples MB, Hayes RC, Li GD, Casburn GR, McCormick JI, Dear BS (2014) Farmer experience with perennial pastures in the mixed farming areas of southern New South Wales: on-farm participatory research investigating pasture establishment with cover-cropping. Crop & Pasture Science 65, 973–987.
Tautges NE, Jungers JM, DeHaan LR, Wyse DL, Sheaffer CC (2018) Maintaining grain yields of the perennial cereal intermediate wheatgrass in monoculture v. bi-culture with alfalfa in the Upper Midwestern USA. The Journal of Agricultural Science 156, 758–773.
| Maintaining grain yields of the perennial cereal intermediate wheatgrass in monoculture v. bi-culture with alfalfa in the Upper Midwestern USA.Crossref | GoogleScholarGoogle Scholar |
Ventroni LM, Volenec JJ, Cangiano CA (2010) Fall dormancy and cutting frequency impact on alfalfa yield and yield components. Field Crops Research 119, 252–259.
| Fall dormancy and cutting frequency impact on alfalfa yield and yield components.Crossref | GoogleScholarGoogle Scholar |
Vogel KP, Masters RA (2001) Frequency grid: a simple tool for measuring grassland establishment. Journal of Range Management 54, 653–655.
| Frequency grid: a simple tool for measuring grassland establishment.Crossref | GoogleScholarGoogle Scholar |
Wolfe EC, Southwood OR (1980) Plant productivity and persistence in mixed pastures containing lucerne at a range of densities with subterranean clover or phalaris. Australian Journal of Experimental Agriculture and Animal Husbandry 20, 189–196.
| Plant productivity and persistence in mixed pastures containing lucerne at a range of densities with subterranean clover or phalaris.Crossref | GoogleScholarGoogle Scholar |
