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Grain Corn
Silage-Specific
Corn
Soybeans
Sunflowers
Canola
Alfalfa
Sorghum
Agronomy
Alfalfa Variety
4A420
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Traits and Technology
Not applicable
Separate Refuge Requirements
Not applicable
Overview
Maintains high forage quality in delayed harvest scenarios.
High resistance to six major diseases along with resistance to Aphanomyces Race 2.
Management Guidelines
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Product Ratings
7-9 Good
4-6 Fair
1-3 Poor
Management Traits
Cuttings Per Season
3 or >
Cutting Recovery
8
Fall Dormancy
4.2
Forage Quality
9
Yield Level
8
Winterhardiness
1.6
Disease Traits
Anthracnose
Highly Resistant
Aphanomyces Race 1
Highly Resistant
Aphanomyces Race 2
Resistant
Bacterial Wilt
Highly Resistant
Disease Index
30
Fusarium Wilt
Highly Resistant
Phytophthora Root Rot
Highly Resistant
Verticillium Wilt
Highly Resistant
Insect Traits
Blue Alfalfa Aphid
Not Rated
Pea Aphid
Resistant
Potato Leafhopper
Not Available
Spotted Pea Aphid
Not Available
Stem Nematode
Highly Resistant
Management Guidelines
Optimum forage potential is achieved when planted in moderately to well-drained, highly productive soils. Refer to local recommendations for seeding rates for your area to achieve optimal productive stand establishment.
Maintain good soil fertility levels throughout the life of the alfalfa field by replacing fertility according to the tons of forage removed. Each ton of alfalfa harvested removes about 14 pounds of P2O5 and 58 pounds of K2O.
Soil testing and/or tissue testing can provide key nutrient analysis for potassium, phosphorus, sulfur, boron and molybdenum. If necessary, apply lime six to 12 months before planting to maintain a pH range of 6.5 to 7.0.
Consider rotating the alfalfa field when stands fall below four healthy crowns or 55 harvestable stems per square foot.
A planting rate of 16 to 18 pounds per acre is recommended to ensure full productive stands.
Seed pre-inoculated with Nitragin® Gold rhizobium inoculant and treated with Apron® XL fungicide.
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