Greensleeves Conference Neil Pettican MSc
What is grass» Poaceae is the biological classification of the grass family» There are over 10,000 species of grass» Grasses include rice, wheat, maize and bamboo» There are less than 30 species which are of major importance to turf.
Who are Barenbrug» Private Company» Over 100 years old» Turnover 150 million» Volume of 70,000 tonnes grass seed» Over 500 employees» Specialist in grass
Barenbrug Worldwide Holland Head Office Belgium Poland France Luxembourg United Kingdom Romania USA (east coast) USA (west coast) China New Zealand Australia Argentina
Main Species Found in Turf Situations» Annual meadow grass» Smooth stalked meadow grass» Rough stalked meadow grass» Perennial ryegrass» Annual ryegrass» Creeping bent» Browntop bent» Velvet bent» Highland bent» Yorkshire fog» Strong creeping red fescue» Slender creeping red fescue» Chewings fescue» Tall fescue» Hard fescue» Sheeps fescue» Crested hairgrass» Tufted hairgrass» Crested dogstail» Timothy
Barenbrug Research & Development» It takes 15 years to develop a new cultivar» 10 research stations worldwide in various climate zones» Cropvale Research Barenbrug UK trial site» STRI BSPB trials and Barenbrug independent trials
Selecting Seed» What should we look for when selecting a grass seed mixture?» Select the correct grass species and cultivars for the area of use soil type, sport to be played, on-going maintenance etc.
What is a cultivar?» A cultivar is a type of grass species which has been bred by a breeder to improve its attributes e.g. fineness of leaf, disease tolerance etc.» Genus - Agrostis (bent grass) Species - capillaris (browntop) Cultivar - BarKing
Annual meadowgrass (Poa annua)»! Annual plant, has a short lifespan»! Very common, indigenous species»! Tufted growth habit»! Seeds at very low heights»! Poor aesthetics colour»! Poor wear tolerance»! Medium leaf width»! High nitrogen requirement»! Poor disease tolerance, drought tolerance»! Medium thatch production
Perennial ryegrass (Lolium perenne)»! Tufted»! Fast establishment»! Excellent wear tolerance»! Large variance between cultivars»! Germination down to 6-7 C soil temperature»! Optimum ph range 5.8-7.4»! Large seed 700 per gram»! Reasonable salt tolerance»! High N inputs, medium water requirements, minimal thatch production
Red Fescues (Festuca rubra sp.)» Tufted/rhizomatous» Very fine, needle like leaves» Medium establishment» Germination down to ~10 C soil temperature» Optimum ph range 5.4-6.8» Largish seed 1000 per gram» Variable salt tolerance» Susceptible to red thread» Low N inputs, low water requirements, medium-high thatch production
Red thread
Bent grass (Agrostis sp.)» Rhizomatous/stoloniferous» Medium/fine leaf width» Medium establishment» Germination down to ~14 C soil temperature» Optimum ph range 5.6-7.0» Very small seed 14,000 per gram» Susceptible to take all patch» Medium N inputs, medium-high water requirements, high-very high thatch production
Tall fescue (Festuca arundinacea)» Tufted & rhizomatous» Medium-slow establishment temp!» Germination down to ~10 C soil temperature» Optimum ph range 5.5-7.0» Large seed 400 per gram» Good salt tolerance» Medium N inputs, very low water requirements, low thatch production
Smooth stalked meadow grass (Poa pratensis)»! Strongly rhizomatous»! Slow establishment temp!»! Germination down to ~12 C soil temperature»! Optimum ph range 5.8-7.5»! Small seed 3,300 per gram»! Poor salt tolerance»! High N inputs, medium water requirements, medium thatch production
Yorkshire Fog (Holcus lanatus)» Tufted, perennial grass» Native on lawns» Occurs over a wide range of soil types» Well adapted to growing in wet conditions» Broad, pale grey/green leaves» Moderate drought» Optimal ph range 5.0-7.5» Poor wear tolerance
What do Barenbrug mean by Total Quality?» The quality of the characteristics of cultivars plays a vital part in the decision making process» But there are additional key factors influencing total quality and potential performance which are often overlooked
Why Total Quality?» Identifying these factors will enable you to assess the total quality value of your mixture selection» Purity» Germination» Vigour» This will ensure a faster establishment and a cleaner, stronger, more competitive sward
Quality Standards Species Min purity EU Min purity HVS Min germ Perennial ryegrass 96% 98% 80% Red fescue 90% 95% 75% Smooth stalked meadowgrass 85% 90% 75% Bent 90% 90% 75% Sheeps / hard fescue 85% 85% 75%
Barenbrug Quality Standards» Barenbrug UK has its own policy standard which aims to surpass the HVS standards» A minimum 99% purity» Germination in excess of 90%
Pure Live seed (Bent) BAR v EC BAR E C
Why BAR Extreme?
Why BAR Extreme?» Very fast establishing» Extremely fine-leafed for the species» Superior wear tolerance» Good year round colour» High shoot density» Cleanness of cut
Seeding preparation» Good preparation of the area to be sown is essential for successful results» Attention should be paid to ensure the seed is in good contact with the soil and to allow water and air infiltration» Thatch particularly inhibits oversowing establishment and this should be minimized prior to seeding.
Sowing Grass Seed» There are 2 main application methods of sowing grass seed» New sowings» Oversowing / overseeding» Remember one seed = one shoot, the more seeds the more shoots» Larger seeds need to be sown at higher rates
New sowing» A new sowing is seeding an area of bare soil with no existing grass or weed cover (construction)» New sowings need to be sown at a higher seeding rate to ensure significant grass cover» Care must be taken to ensure that any cultivation of the soil does not disturb the seed bank, which can cause weed seeds to germinate creating competition and looking unsightly.» BAR Extreme new sowing 25-35 grams per m2
Overseeding» Overseeding is sowing grass seed into an existing cover of grass, sometimes known as renovation» Overseeding is done to increase the density and quality of the overall grass cover» There are 2 main types of overseeding» Seeding to replace the grass cover of bare areas» To improve the species content of the grass cover known as species exchange» Species exchange will improve the quality of the grass e.g. better wear tolerance, fineness of leaf, disease tolerance and aesthetics» BAR Extreme oversow 15-25 grams per m2
Species Exchange
Sowing depth» Sowing depth is a vital factor in the success of germination and establishment» Sowing depth can influence speed of establishment, visual appearance and botanical composition of the sward, which could in turn influence the potential performance capability» Generally the larger the seed the deeper it should be sown (below thatch)» BAR Extreme, 12-15mm depth
Sowing depth BAR 10 RTF 4 weeks after sowing Left 8-10mm Right 12-15mm
Germinating Grass Seed» Germination of grass seed begins when sufficient temperatures are present and adequate moisture is available for absorption» Sufficient water is vital to the germination process, which only begins when water is absorbed by the seed.» This triggers a process within the seed which breaks down the embryo» First the root will emerge followed by the primary shoot.» As the shoot emerges the photosynthetic process will begin to provide energy for the successful establishment of the emerging plant.
Water Requirements» After sowing, the soil should be kept MOIST but not too wet in the zone in which the seed is placed.» Too much can be as bad as too little, it can preclude vital air from the pore space, and air is essential for germination.» Do not allow the seed or seedlings to dry out until germination has occurred little and often» Following germination, it is essential that newly emerged seedlings continue to receive sufficient irrigation/rainfall for successful establishment» Once a healthy root system is established a regular maintenance programme can be resumed.
Soil Temperatures» The temperature of a soil is an extremely important influencer on the germination process.» There are significant differences in temperature germination response not only between species, but also between specific cultivars within a species.» For the optimum results seed should be sown when temperatures are consistent for the relevant mixture.» Perennial ryegrass (BAR Extreme) 7-15 days with soil temperature of 7 C +» Red fescue - 10-21 days with soil temperature of 10 C +» Browntop bent - 10-21 days with a soil temperature of 12 C +
Summary» Select the correct grass species.» Select the highest quality seed» Good preparation = successful results» Think about the time of year you are seeding, soil temperature, seeding rate and depth» MOISTURE!
Barenbrug website
Thank you for your time Any questions? Barenbrug UK Ltd 33 Perkins Road, Rougham Industrial Estate, Bury St. Edmunds, Suffolk IP30 9ND Tel: 01359 272000 Fax: 01359 272001 Email: info@baruk.co.uk www.barenbrug.co.uk