View Full Table | Close Full ViewTable 1.

Measurements of shoot and root components at 14 d after planting two-node stem cuttings taken from upper or lower positions on Merkeron napiergrass stalks and planted in the soil horizontally (buried) or vertically.

 
Cane position Planting method Root mass Shoot mass Root length Shoot length Primary shoots cutting−1 Total shoots cutting−1 Viable cuttings
g cm %
Upper horizontal 0.34d† 10.6b 16.3c 40.9b 1.6b 2.0c 57.5b
Upper vertical 1.01c 9.5b 26.4b 43.8b 1.8a 2.5b 85.0a
Lower horizontal 2.13b 27.2a 37.6a 64.8a 1.9a 2.0c 100.0a
Lower vertical 2.84a 21.8a 42.0a 61.8a 1.9a 3.1a 97.5a
Within columns, means followed by the same letter are not significantly different.



View Full Table | Close Full ViewTable 2.

Average fall and spring emergence of primary shoots (hills), percentage of cuttings producing at least one shoot, and percentage of emerged hills surviving the winter for napiergrass cuttings of varying node numbers, with 10 total nodes in each plot.

 
Planting date Nodes cutting−1 Fall Spring Fall vs. spring Fall Spring Surviving hills
shoots plot−1 %
29 Oct. 2009 1 2.9a† 0.8b *** 28.5c 8.1c 28.6
2 2.2ab 2.0a ns‡ 43.7b 40.0b 91.5
5 1.7bc 2.4a ** 63.0a 83.3a 144.4
10 1.0c 1.8a ** 48.1ab 81.5a 175.0
17 Sept. 2010 1 4.8a 2.5b *** 48.1c 24.8c 51.5
2 3.9b 3.4a ns 69.6b 60.7b 89.4
5 3.4bc 3.9a ns 90.7a 98.1a 113.0
10 2.7c 3.8a *** 100.0a 100.0a 139.2
15 Nov. 2010 1 2.7ab 27.0c
2 3.5a 65.9b
5 2.9ab 85.2a
10 2.3b 96.3a
**Significant at the 0.01 probability level.
***Significant at the 0.001 probability level.
Within columns and planting dates, means with the same letter are not significantly different.
ns, not significant at the 0.05 probability level.



View Full Table | Close Full ViewTable 3.

Average fall and spring emergence of primary shoots (hills) and percentage of cuttings producing at least one shoot for napiergrass and energycane cuttings at varying planting dates. Each cutting contained 10 nodes from the lower half of the stem.

 
Year Planting date Fall emergence
Spring emergence
shoots plot−1 % shoots plot−1 %
2009 17 Sept. 2.2a† 94.4a 2.1a 94.4a
1 Oct. 1.2b 72.2b 1.4b 72.2b
15 Oct 0.8bc 55.6b 1.3b 91.7ab
2 Nov. 0.3c 13.9c 2.1a 100.0a
16 Nov. 1.6ab 94.4a
2010 3 Sept. 2.4a 80.6a 4.5a 100.0a
17 Sept. 1.9a 69.4ab 3.4b 100.0a
1 Oct. 1.1b 61.1b 2.4c 97.2a
15 Oct 2.2a 80.6a 2.5c 100.0a
29 Oct. 0.4c 22.2c 1.6 d 88.9ab
15 Nov. 1.5 d 75.0b
Within columns and years, means with the same letter are not significantly different.



View Full Table | Close Full ViewTable 4.

Fall and spring emergence of seven napiergrass genotypes and two energycane genotypes, averaged across planting dates. Fall emergence means do not include the latest plantings (16 Nov. 2009 and 15 Nov. 2010), for which no emergence was observed until the following spring.

 
2009–2010
2010–2011
Genotype Fall Spring Fall Spring
shoots cutting−1
Merkeron 1.8a† 1.9abcd 2.5b 3.2ab
04-1-62 0.8b 1.2cd 1.2cd 2.2bc
07-110 1.1ab 1.6abcd 2.2bc 2.8ab
07-219 0.4b 1.1d 0.5de 1.3c
07-239 1.3ab 1.5bcd 3.7a 3.8a
07-353 0.9ab 1.5bcd 2.2bc 2.8ab
07-83 1.3ab 2.0abc 2.0bc 3.0ab
Ho-02-144‡ 1.1ab 2.3ab 0.1 e 2.3b
L79-1002‡ 1.3ab 2.4a 0.4 de 2.5b
Means within columns with the same letter are not significantly different.
Energycanes.