2020 Harrell's BA Guide Coastal Plains and SE

2020 Harrell's BA Guide Coastal Plains and SE

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Your SUCCESS SCIENCE

TWO Ph.D’s on Staff

At Harrell’s we are dedicated to helping you succeed through quality products and valuable services. Our two employee-owner Ph.D’s work in cooperation with TurPh.Dudes all across the country bringing you the latest industry research to help you succeed day-in and day-out.

Dr. Raymond Snyder Director of Agronomy

Dr. Jeff Atkinson Director of Agronomy

15+ States

22+ Trials

16+ Universities

- Alabama - Arkansas - California - Florida

- New Jersey - Ohio - Pennsylvania - South Carolina - Tennessee - Texas - Virginia

- Arkansas University - Auburn University - Clemson University - Iowa State University - Ohio State University - Pennsylvania State University - Michigan State University - Rutgers University

- Texas A&M - Virginia Tech - University of California Riverside - University of Florida - University of Kentucky - University of Maryland - University of Massachusetts - University of Tennessee

- Cool &Warm Season -Nutrient Availability -Plant Health -Root Development -Water Distribution -Aerification Recovery -Grow-In Programs

- Kentucky - Maryland - Massachusetts - Michigan

-Liquid & Granular Products -Environmental Sustainability -Nematode Management

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Use the tables on this page to assess the impact of irrigation water on plant quality

Table 1. Total salinity hazard classification guidelines for variable quality irrigation water based on Electrical Conductivity (ECw) and Total Dissolved Salts (ppm). Salinity Hazard Class ECw (dS/m) Total Dissolved Salts (ppm) Potential Injury & Management Requirements Low 2,000 Damage to plants with high tolerance to salinity may occur. Use salt-tolerant plants. Site must have good drainage. Excess irrigation for drainage.

Table 2. Salt tolerance of selected turfgrass species. Tolerance Species ECw (dS/m) ppm Excellent Seashore paspalum >10 6,500 Good St. Augustinegrass Zoysiagrass Bermudagrass Kikuyugrass 6-10 4,000 -6,500 Fair Perennial ryegrass Tall fescue Annual ryegrass 3-6 2,000 - 4,000 Poor 0.7 0 – 3 0.7 - 0.2 0 – 3 2.5

Severe problems

SAR

=

3 – 6 >1.2

3 – 6 1.2 – 0.3 6 – 12 1.9 – 0.5 12 – 20 2.9 – 1.3 20 – 40 5 – 2.9

3 – 6 1.9

6 – 12 2.9 20 – 40 >5.0

12 – 20