Tonga Performance Data

Penn State Hay trials – Rock Springs, PA

Seeded August 1,1997
Comparison of 8 tetraploid perennial ryegrass varieties
Varieties in this trial include Tonga, Anaconda, Fetione, Impala, Tetramax, Respect, Aubisque, and Rosalin.

Variety

Cut 1 5/8-5/31

Cut 2 6/14-7/5

Cut 3 7/20-8/8

Cut 4 9/19

 2000 Yield 1999 Yield 1998 Yield 1998-00 Average Date 1st Cutting Stand 10/2/00
Highest score

1.28

0.92

0.53

0.45

 2.41 2.97 4.96 3.26 5/31 93.7
Tonga

0.87

0.49

0.38

0.25

 1.99 2.91 4.64 3.19 5/15 86.9
Lowest score

0.42

0.39

0.20

0.25

 1.47 2.51 4.38 2.93 5/15 86.9
LSD

0.27

0.20

0.19

0.28

 0.52 0.47 0.48 0.31   5.2


Additionally, Feed values were taken on the first cut of 2000.
Remember, for ADF and NDF, the LOWER the score the better.



Variety

% Protein

ADF

NDF
Highest Score

16.7

33.8

60.8
Tonga

13.0

27.5

54.3
Lowest Score

10.0

27.5

54.3


Ohio State University Forage Performance Trials

Ryegrass Variety Trial - Wooster, Ohio - 1999 Seeding

 

Yield in Tons DM/Acre in 2000

Maturitya

Rustb

Vigorc

Weedsd
Variety

22-May

22-Jun

25-Jul

25-Aug

27-Oct

Total

1st
growth

2nd
growth

22-Aug

22-Aug

22-Aug
Highest score

2.97

1.54

1.16

1.20

1.36

7.64

4.8

3.6

4.9

4.6

3.8
Tonga

2.83

1.28

1.09

1.05

1.26

7.52

4.0

1.0

2.2

4.4

3.0
Lowest Score

2.03

0.91

0.88

0.81

0.49

5.44

1.3

1.0

1.9

2.4

0.9
LSD 0.05

0.28

0.29

0.25

0.26

0.30

0.61

0.6

1.8

1.1

1.2

1.0

Data compares Tonga with other ryegrasses including Aubisque, Boxer, Elgon, Grand Daddy, Respect, Session, Barfort*, Prana, Samson, Amazon, Anaconda, Eminent, Sampson, Impact, Norlea and blends BG-34 and BG-16.

a Maturity -- 1 = vegetative, 2 = early boot, 3 = initial emergence of inflorescence (head emergence), 4 = complete emergence of inflorescence from boot, 5 = elongated peduncle (stem holding inflorescence).
b Rust: 1 = 1-20%, 2 = 21-40%, 3 = 41-60%, 4 = 61-80%, 5 = 81-100%.
c Vigor: 1 = least to 5 = most
d Weeds: 1 = least to 5 = most

Establishment: Seeded with a Hege 3-point hitch drill with press wheels at 20 lb/a.

Soil type and analysis: Riddles silt loam, pH = 6.13, P = 54lb/a, K = 228 lb/a (11/00).

2000 Fertilization: Ammonium Nitrate (34-0-0) applied 24-March at 225 lb/a and 150 lb/a after cuttings 1 - 4.

Further trial information may be found at: www.ag.ohio-state.edu/~perf/forage00/s195_t16.html