Forage Establishment Dr. Ray Smith and Dr. Garry Lacefield Forage Extension Specialists University of Kentucky
Establishment Basics Site SelectionSite Selection Soil Fertility and FertilizationSoil Fertility and Fertilization Seedbed PreparationSeedbed Preparation Seeding OperationSeeding Operation New Stand ManagementNew Stand Management Site SelectionSite Selection Soil Fertility and FertilizationSoil Fertility and Fertilization Seedbed PreparationSeedbed Preparation Seeding OperationSeeding Operation New Stand ManagementNew Stand Management
Site Selection
Address Soil Fertility Soil Test!Soil Test! LimeLime PhosphorousPhosphorous PotassiumPotassium Minor nutrientsMinor nutrients Discuss practical fertilization.Discuss practical fertilization. Soil Test!Soil Test! LimeLime PhosphorousPhosphorous PotassiumPotassium Minor nutrientsMinor nutrients Discuss practical fertilization.Discuss practical fertilization.
Maintain Phosphorus and Potassium
Maintain Correct Soil pH
Not Inoculated Inoculated
PlantingPlanting Seed Treatments and Flow Rate Lime Coatings Increase Flow Rate of SeedLime Coatings Increase Flow Rate of Seed Amount Varies by Coating Manufacturer and Drill TypeAmount Varies by Coating Manufacturer and Drill Type Range of Increase Measured was 17 to 33% for ‘Tye’-type SeederRange of Increase Measured was 17 to 33% for ‘Tye’-type Seeder Lime Coatings Increase Flow Rate of SeedLime Coatings Increase Flow Rate of Seed Amount Varies by Coating Manufacturer and Drill TypeAmount Varies by Coating Manufacturer and Drill Type Range of Increase Measured was 17 to 33% for ‘Tye’-type SeederRange of Increase Measured was 17 to 33% for ‘Tye’-type Seeder
Seeding Rate He who sows sparingly shall also reap sparingly AGR-18 Forage Pocket Guide
Seeding Date Spring –Legumes Fall –Grasses AGR-18
Seedbed Preparation Prepared seedbed No-till + herbicide Broadcasting Prepared seedbed No-till + herbicide Broadcasting
Seedbed: Fine and Firm
Seeding Depth Shallow! ¼ to ½ inch
Broadcast Seedings Good for clover (Frost seeding especially) The more bare ground, the better Outside force is necessary –Freezing and Thawing –Cattle traffic No for Alfalfa (unless prepared seedbed and cultipacking afterwards).
Residue Reduction and Sod Suppression
graze close before seeding
Clover vs. Alfalfa Frost Seeding
CONTROLLING COMPETITION After Germination
Maximizing Success With Broadcast Clover Seedings Get soil fertility levels up –Especially P and pH Hold back existing grass Show some dirt! Get seed out when there are still 4 to 6 weeks of night temperature below 32 degrees. –Mid-February good goal Manage grass competition after emergence Get soil fertility levels up –Especially P and pH Hold back existing grass Show some dirt! Get seed out when there are still 4 to 6 weeks of night temperature below 32 degrees. –Mid-February good goal Manage grass competition after emergence
No-Till Generally always better than ‘frost seedings” Killed sod needed for alfalfa Clovers can be drilled into overgrazed sod with success Drill setup is crucial
No-Till Drill More effort and attention to detail More consistent results –putting seed in contact with soil Can be successful in spring or fall
Best method for alfalfa and grasses Suppress sod and reduce residue Calibrate drill prior to seeding Check and recheck seeding depth –don’t take somebody’s word –seeding depth should never be deeper than 1/2” –general rule: if you can’t see a little seed along slit, then you are going too deep Control competition after seeding
Sod Suppression with Herbicide for Alfalfa and Grasses Sod Suppression with Herbicide for Alfalfa and Grasses
Traditional Spray/Smother/Spray Approach
Double Roundup Application
Alfalfa into Fescue Sod Alfalfa Into Suppressed Fescue Sod: Green County Gramoxone – 1.7 pt/acre mid March Gramoxone – 1.0 pt/acre early April Seeded alfalfa within a few days of last spray.
Roundup Ready Alfalfa
Minimum Tillage Graze pasture hard to reduce residue Disturb 40-60% of the sod –light disking, field cultivator or other tillage implement Broadcast seed or use conventional drill Cultipack to get good soil-seed contact Control competition –grazing or clipping
Livestock Seeding Feed seed to livestock –legumes work better than grass Stands not uniform –4 day rotation it takes 4-5 years to get 1 manure pile/yd 2 Germination high on pat, actual establishment can be low –roots do not penetrate soil Seed inoculation is difficult
Don’t Overgraze New Seedlings
Allow stands to get established before heavily used
Reasons Why Seedings Fail Adverse Weather Competition Poor Seedbed Preparation Poor Seeding Techniques Low Quality Seed Unadapted Varieties Adverse Weather Competition Poor Seedbed Preparation Poor Seeding Techniques Low Quality Seed Unadapted Varieties Seedling Diseases Insects Failure to Inoculate Low Soils and Fertility Poor Physical Conditions of Soil Grazing New Seedings Early/Excessively Seedling Diseases Insects Failure to Inoculate Low Soils and Fertility Poor Physical Conditions of Soil Grazing New Seedings Early/Excessively