Summer-Fall, 1988

 During the summer-fall season of 1988, two germplasm evaluation trials were established. In the first trial,
 varieties included Agata, Amarista, Bonaro, Colorette, Dune. EAS 11. Paria, Suabor, Suabor 2 and Viola. The
 second trial Included nine varieties: EAS 12, Labino Red, Limonette, Miguela, Squish. Tano, Tapato Fine, Viola and
 Whity Thany. The first trial was planted on May 16 and harvested on October3, while the second trial was planted
 on May 24 and harvested on October 11. Experimental procedures, planting and cultural practices were similar to
 those In the previous trial.
 Total yield ranged from 5.2 to 21.2 t ha-', while marketable yield ranged from 3.6 to 11.0 t1 ha' (Table 17).
 Colorette produced the highest total yield. Differences in marketable yield were not significant among varieties.
 Viola produced one of the lowest yields, but the percent of marketable yield was the highest (84.9 percent). Viola
 and Suabor 2 had the lowest weevil damage.

 Table 17. Total and marketable tuber yield of sweet potato varieties
 grown during summer-fall, 1988, at UVI-AES, from May 10to October 3.

 Yield (t ha)' Marketable Weevil damage'
 Variety Total Marketable yield (%) (%)

 Colorette 21.2 a 11.0 a 51.9 48.7 ab
 Peria 12.6 ab 8.0 a 63.5 44.3 ab
 Agata 12.2 b 5.8 a 47.5 78.9 a
 Amarista 11.4 ab 6.4 a 56.1 73.9 a
 EAS 11 8.0 b 5.6 a 70.0 36.6 b
 Suabor 2 7.1 b 4.7 a 66.2 26.8 b
 Suabor 6.2 b 4.0 a 64.5 42.9 ab
 Dune 5.8 b 4.7 a 81.0 32.7 b
 Viola 5.3 b 4.5 a 84.9 26.9 b
 Bonaro 4.2 b 3.6 a 69.2 46.3 ab

 'Means within a column followed bythe same letter are not significant ly
 different by Duncan's Multiple Range Test. (P-0.05).


 In the second trial, total yield ranged from 0.3to 9.4t ha-', and marketable yield rangedfrom 0.04 to3.8t ha-' (Table
18). These yields are generally lower than those in the first set. Miguela. Toquesila, Squish, Whity Thany, Vidaand EAS
12 were the best-yielding varieties. Varieties with high percentage of marketable yield were Umonette (100 percent).
Tano (84.6 percent) and Vida (80.9 percent). Tapato Fine and Umonette had the lowest percentage of weevil damage.

 Table 18. Total and marketable tuber yield of sweet potato varieties
 grown duringsummer-fall, 1988, at UVI-AES, from May24to October 11.

 Yield (t ha')' Marketable Weevil damage'
 Variety Total Marketable (%) (%)

 Miguela 9.4 a 2.0 abc 21.3 79.2 ab
 Toquesita 9.0 ab 4.8 a 53.3 49.0 be
 Squish 5.7 ab 2.6 abc 45.6 51.2 bc
 WhityThany 5.4 ab 3.4 ab 63.0 37.8 cd
 Vkida 4.7 ab 3.8 ab 80.9 23.3 cd
 EAS 12 4.2 ab 2.4 abc 57.1 42.0 cd
 Tapato Fine 1.9 b 1.8 abc 94.7 4.4 d
 Tano 1.3 b 1.1 bc 84.6 10.4 d
 Limonette 0.9 b 0.9 bc 100.0 5.1 d
 Sabino Red 0.3 b 0.04 c 13.3 87.8 a

 'Means within a column followed bythe same letter are not significantly
 different by Duncan's Multiple Range Test, (P-0.05).