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NC State Extension

2016 Zucchini Squash Cultivar Evaluations

Horticulture Series # 218

Principle Investigators: Jonathan R. Schultheis, Professor and Vegetable Extension Specialist and Keith D. Starke, Research Associate, Department of Horticultural Science, NC State University, Raleigh, NC 27695-7609

Acknowledgements: We gratefully acknowledge the assistance of Cathy Herring, (Superintendent), and Brandon Poole, (Horticulture Supervisor), from the Central Crops Research Station, Clayton, NC, as well as, the personnel at the research station for their help in establishing, maintaining, and harvesting the squash cultivar evaluation trial. We gratefully acknowledge our summer research assistants, Stephen Bajorek and Libby Indermaur. We would also like to thank Joy Smith for conducting the statistical analysis on the data collected in this trial.

Finally, we would like to thank the following seed companies for their financial support: Bejo, Enza Zaden, HM Clause, Rijk Zwaan, Seminis/Monsanto, and Syngenta. We also want to acknowledge, support for this study was provided by the US Department of Agriculture, National Institute of Food and Agriculture, for the CucCAP Specialty Crop Research Initiative grant under award number 2015-51181-24285.

General Cultural Practices

The squash trials were established on black plastic mulch. Pesticides used on all plots were chemicals labelled for that crop, 2016 North Carolina Agricultural Chemicals Manual.

Zucchini cultivars and Seed companies

Cultivar

Company

10569 Rijk Zwaan
10607 Rijk Zwaan
10609 Rijk Zwaan
15S.49004 Rijk Zwaan
E28Z.00569 Enza
E28Z.00628 Enza
SV0474YG Seminis
SV0914YG Seminis
SV6009YG Seminis
SV9043YG Seminis
Bejo 3043 Bejo
Green Machine Enza
Modena Bejo
Respect HM Clause
Spineless Beauty Syngenta
Spineless Perfection Syngenta

Disclaimer

This publication presents data from the cultivar evaluation trials conducted during 2016. Information in this report is believed to be reliable but should not be relied upon as a sole source of information. Limited accompanying detail is included but excludes some pertinent information, which may aid interpretation.

Table 1. Zucchini Squash cultigen trial yields¹, number of 20 lb boxes per acre, per indicated harvests for replicated treatments. Clayton, NC, 2016.

Cultivar

Marketable²

Harvest 1 – 5

Marketable²

Harvests 6 – 10

Marketable²

Harvests 11 – 15

#1

#2

#1

#2

#1

#2

10569 90 26 323 77 145 9
10607 157 40 322 200 88 41
10609 62 15 333 133 78 27
15S.49004 10 4 51 42 24 21
E28Z.00569 139 52 293 148 85 26
E28Z.00628 151 54 456 129 216 32
SV0474YG 141 91 362 131 120 55
SV0914YG 17 10 259 56 87 35
SV6009YG 192 68 341 258 91 51
SV9043YG 139 64 460 172 115 40
Bejo 3043 145 58 326 156 162 19
Green Machine 87 39 198 96 62 14
Modena 63 52 377 180 167 60
Respect 233 64 399 185 191 29
Spineless Beauty 148 35 401 183 101 44
Spineless Perfection 167 40 417 167 108 89
Average 121 44 332 144 115 37
LSD (0.05) 77 38 187 84 95 34

Cultivar

Culls³

Harvests 1 – 5

Culls³

Harvests 6 – 10

Culls³

Harvests 11 – 15

10569 3 10 4
10607 3 34 8
10609 7 3 0
15S.49004 3 44 18
E28Z.00569 29 40 4
E28Z.00628 39 60 14
SV0474YG 19 32 4
SV0914YG 1 6 16
SV6009YG 24 57 28
SV9043YG 22 35 10
Bejo 3043 20 13 7
Green Machine 13 38 10
Modena 3 36 6
Respect 10 27 8
Spineless Beauty 5 15 23
Spineless Perfection 2 31 15
Average 13 30 11
LSD (0.05) 15 37 17

Cultivar

Virus

Harvests 1 – 5

Virus4

Harvests 6 – 10

Virus4

Harvests 11 – 15

10569 0 1 8
10607 0 0 5
10609 0 0 12
15S.49004 0 0 0
E28Z.00569 0 0 1
E28Z.00628 0 1 1
SV0474YG 3 0 0
SV0914YG 0 0 25
SV6009YG 0 0 29
SV9043YG 0 0 0
Bejo 3043 0 0 1
Green Machine 0 0 10
Modena 0 2 5
Respect 0 0 0
Spineless Beauty 0 0 4
Spineless Perfection 0 0 14
Average 0 0 7
LSD (0.05) * * 28

Cultivar

Total

Harvests 1 – 5

Total

Harvests 6 – 10

Total

Harvests 11 – 15

10569 119 411 166
10607 200 555 142
10609 84 469 117
15S.49004 17 137 63
E28Z.00569 221 481 117
E28Z.00628 244 645 262
SV0474YG 254 525 179
SV0914YG 28 321 163
SV6009YG 283 656 200
SV9043YG 225 666 166
Bejo 3043 223 495 189
Green Machine 138 332 95
Modena 118 595 237
Respect 307 610 227
Spineless Beauty 188 599 172
Spineless Perfection 208 614 227
Average 179 507 170
LSD (0.05) 93 220 NS

1 Total of 15 harvests. Planting was July 28, 2016. Harvests 1-5 occurred on 31 August; 2, 5, 7 and 9 September; Harvests 6-10 occurred on 12, 14, 16, 19 and 21 September; Harvests
11-15 occurred on 23, 26, 28 and 30 September; 3 October.
2 Marketable fruit are graded into U.S. No. 1 (requires younger and more tender squash than U.S. No. 2 which are permitted to be more mature and allows greater surface area to be
affected by defects).
3Culls consisted primarily of misshaped fruit.
4Fruit were discolored or rough/disfigured due to virus.
*virus incidence was low in harvests weeks (1-5) and (6-10); these data were not statistically different, therefore, they are only presented as observations.

NS indicates data were not statistically different.

Table 2. Zucchini Squash cultigen trial yields, cumulative boxes, (20 lbs.), per acre, among all harvests¹. Clayton, NC, 2016.

Marketable²

Percent

 Cultivar

#1

#2

 Culls³

 Virus4

 Total

 Marketable

 Cull

 Virus

10569 558 112 17 9 695 97 2 1
10607 567 280 45 5 898 95 5 1
10609 473 175 10 12 670 97 2 1
15S.49004 85 68 65 0 218 62 38 0
E28Z.00569 518 226 74 1 818 91 9 0
E28Z.00628 823 215 113 1 1152 89 11 0
SV0474YG 623 277 56 3 958 93 7 0
SV0914YG 363 101 23 25 512 92 5 3
SV6009YG 624 376 109 29 1139 88 9 2
SV9043YG 714 276 68 0 1057 94 6 0
Bejo 3043 346 149 61 10 565 87 11 1
Green Machine 822 277 45 0 1144 96 4 0
Modena 634 233 40 1 907 95 5 1
Respect 649 262 43 4 958 95 5 1
Spineless Beauty 692 296 48 14 1049 95 4 1
Spineless Perfection 606 292 46 7 951 95 5 1
Average 569 226 54 8 856 91 8 1
LSD (0.05) 302 109 47 15 26 15 13 *

1Total of 15 harvests.
2Marketable fruit are graded into U.S. No. 1 (requires younger and more tender squash than U.S. No. 2 which are permitted to
be more mature and allows greater surface area to be affected by defects).
3 Culls consisted of primarily misshaped fruit.
4 Fruit were discolored or rough/disfigured due to virus.
*Virus incidence was low in harvests weeks (1-5) and (6-10); these data were not statistically different, therefore, they are only
presented as observations.

Table 3. Zucchini Squash cultigen trial yields¹. Percentage marketable, cull, and virus symptomatic fruit per indicated harvests by fruit yield for replicated treatments, Clayton, NC, 2016.

Percentage of yield based upon grade.

Cultivar

Marketable2

 #1

Marketable2

 #2

 1 – 5

 6 – 10

 11 – 15

 1 – 5

 6 – 10

 11 – 15

10569 70.9 76.3 87.4 26.5 22.0 7.4
10607 81.4 58.3 64.8 16.8 36.2 24.0
10609 74.0 68.8 59.6 15.7 30.2 36.2
15S.49004 50.0 31.0 33.4 25.0 30.7 26.0
E28Z.00569 63.0 63.6 66.0 23.1 28.6 27.6
E28Z.00628 62.0 69.5 82.4 22.7 18.7 11.0
SV0474YG 52.5 67.1 68.8 36.0 25.9 29.2
SV0914YG 78.8 80.5 60.6 17.1 16.7 20.5
SV6009YG 67.4 51.1 41.8 24.0 40.3 31.6
SV9043YG 61.5 70.0 68.0 28.7 25.3 25.3
Bejo 3043 63.7 66.9 87.6 27.1 30.2 7.6
Green Machine 64.5 59.0 66.1 26.1 29.4 11.5
Modena 52.0 64.9 67.7 45.2 28.6 27.6
Respect 76.3 64.8 85.7 20.5 30.8 11.6
Spineless Beauty 73.9 67.5 57.0 23.8 30.0 25.3
Spineless Perfection 82.3 65.6 53.3 16.5 28.9 36.1
Average 67.1 64.1 65.6 24.7 28.3 22.4
LSD (0.05) 28 19 28 26 15 26

Cultivar

Culls3

Virus4

 1 – 5

 6 – 10

 11 – 15

 1 – 5

 6 – 10

 11 – 15

10569 2.5 1.5 2.1 0.0 0.2 3.2
10607 1.8 5.5 6.6 0.0 0.0 4.6
10609 10.3 1.0 0.0 0.0 0.0 4.2
15S.49004 25.0 38.3 40.6 0.0 0.0 0.0
E28Z.00569 13.9 7.8 5.5 0.0 0.0 1.0
E28Z.00628 15.3 11.6 6.4 0.0 0.2 0.2
SV0474YG 9.9 7.0 2.1 1.6 0.0 0.0
SV0914YG 4.2 2.8 8.2 0.0 0.0 10.7
SV6009YG 8.7 8.6 13.1 0.0 0.0 13.5
SV9043YG 9.8 4.7 6.8 0.0 0.0 0.0
Bejo 3043 9.2 3.0 4.5 0.0 0.0 0.3
Green Machine 9.4 11.6 13.3 0.0 0.0 9.1
Modena 2.8 6.0 2.9 0.0 0.5 1.7
Respect 3.3 4.4 2.7 0.0 0.0 0.0
Spineless Beauty 2.3 2.4 14.8 0.0 0.0 2.9
Spineless Perfection 1.2 5.5 5.6 0.0 0.0 5.0
Average 8.1 7.6 8.5 0.1 0.1 3.5
LSD (0.05) 19 13 17 * * 13

1 Total of 15 harvests. Planting was July 28, 2016. Harvests 1-5 occurred on 31 August; 2, 5, 7 and 9 September. Harvests 6-10 occurred on 12, 14, 16, 19 and 21
September. Harvests 11-15 occurred on 23, 26, 28 and 30 September; 3 October.
2 Marketable fruit are graded into U.S. No. 1 (requires younger and more tender squash than U.S. No. 2 which are permitted to be more mature and allows greater
surface area to be affected by defects).
3 Culls consisted primarily of mishaped fruit.
4 Fruit were discolored or rough/disfigured due to virus.
*Virus incidence was low in harvests weeks (1-5) and (6-10); these data were not statistically different, therefore, they are only presented as observations.

Table 4. Zucchini Squash cultigen trial yields¹, average number of fruit per plant, per indicated harvests for replicated treatments, Clayton, NC, 2016.

Number of Marketable³ fruit per plant per harvest period³

Cultivar

Harvest

1 – 5

Harvest

6 – 10

Harvest

11-15

 #1

 #2

 #1

 #2

 #1

 #2

10569 1.0 0.3 2.5 0.5 1.3 0.1
10607 1.8 0.4 2.2 1.5 1.2 0.4
10609 0.8 0.1 2.1 0.8 0.8 0.3
15S.49004 0.3 0.1 1.4 1.2 0.9 0.5
E28Z.00569 1.5 0.5 2.4 1.1 1.1 0.3
E28Z.00628 1.6 0.5 3.4 1.0 2.5 0.3
SV0474YG 1.4 0.8 2.6 0.9 1.3 0.4
SV0914YG 0.3 0.1 2.1 0.6 1.2 0.5
SV6009YG 2.0 0.6 2.4 1.5 0.9 0.6
SV9043YG 1.5 0.6 3.0 1.2 1.7 0.3
Bejo 3043 1.3 0.4 1.8 0.7 0.7 0.1
Green Machine 2.5 0.6 3.3 1.3 1.7 0.3
Modena 1.4 0.3 2.5 1.2 1.2 0.3
Respect 1.4 0.4 2.6 1.1 1.1 0.7
Spineless Beauty 0.8 0.5 2.5 1.0 1.9 0.5
Spineless Perfection 1.4 0.5 2.6 1.0 1.9 0.2
Average 1.3 0.4 2.5 1.0 1.3 0.4
LSD (0.05) 0.8 0.3 1.4 0.6 1.0 0.4

Cultivar

Culls4

Harvest

1 – 5

Culls4

Harvest

6 – 10

Culls4

Harvest

11 – 15

Virus5

Harvest

 1 – 5

Virus5

Harvest

6 – 10

Virus5

Harvest

11 – 15

Spineless Perfection 0.4 0.2 0.1 0.0 0.0 0.0
10569 0.1 0.1 0.1 0.0 0.0 0.1
10607 0.1 0.3 0.1 0.0 0.0 0.1
10609 0.2 0.1 0.0 0.0 0.0 0.1
15S.49004 0.1 0.9 0.4 0.0 0.0 0.0
E28Z.00569 1.0 0.6 0.2 0.0 0.0 0.0
E28Z.00628 1.0 0.6 0.3 0.0 0.0 0.0
SV0474YG 0.4 0.4

0.1

0.0 0.0 0.0
SV0914YG 0.0 0.1 0.3 0.0 0.0 0.4
SV6009YG 0.4 0.5 0.4 0.0 0.0 0.3
SV9043YG 1.0 0.7 0.2 0.0 0.0 0.0
Bejo 3043 0.6 0.5 0.3 0.0 0.0 0.1
Green Machine 0.6 0.3 0.1 0.0 0.0 0.0
Modena 0.1 0.2 0.3 0.0 0.0 0.1
Respect 0.1 0.2 0.2 0.0 0.0 0.1
Spineless Beauty 0.1 0.5 0.2 0.0 0.0 0.1
Average 0.4 0.4 0.2 0.0 0.0 0.1
LSD (0.05) 0.4 0.5 0.2 * * 0.5

Total fruit harvested

Cultivar

Harvest

1 – 5

Harvest

6 – 10

Harvest

11 – 15

10569 1.4 3.1 1.6
10607 2.4 3.9 1.8
10609 1.1 3.0 1.2
15S.49004 0.5 3.5 1.8
E28Z.00569 2.9 4.1 1.5
E28Z.00628 3.1 5.0 3.1
SV0474YG 2.6 4.0 1.8
SV0914YG 0.4 2.9 2.3
SV6009YG 2.9 4.4 2.3
SV9043YG 3.1 4.9 2.2
Bejo 3043 2.2 3.1 1.1
Green Machine 3.7 4.9 2.1
Modena 1.8 3.8 1.8
Respect 1.9 3.9 2.0
Spineless Beauty 1.4 4.1 2.5
Spineless Perfection 2.2 3.7 2.3
Average 2.1 3.9 2.0
LSD (0.05) 1.0 NS NS

1 Total of 15 harvests. Planting was July 28, 2016. Harvests 1-5 occurred on 31 August; 2, 5, 7 and 9 September. Harvests 6-10 occurred on 12, 14, 16, 19 and 21 September.
Harvests 11-15 occurred on 23, 26, 28 and 30 September; 3 October.
2 Average number of fruit harvested from each plant at each harvest period (i.e.: 1-5; 6-10; 11-15).
3 Marketable fruit are graded into U.S. No. 1 (requires younger and more tender squash than U.S. No. 2 which are permitted to be more mature and allows greater surface area to be affected by defects).
4 Culls consisted primarily of misshaped fruit.
5 Fruit were discolored or rough/disfigured due to virus.
*Virus incidence was low in harvests weeks (1-5) and (6-10); these data were not statistically different, therefore, they are only presented as observations.
NS indicates data were not statistically different.

Table 5. Zucchini squash cultigen trials. Cumulative fruit weight per plant and percent per plant among all harvests¹. Clayton, NC, 2016.

Cultivar

Marketable2

Culls3

Virus4

Total

Percent Marketable

Cull

Virus

 #1

 #2

10569 2.6 0.5 0.1 0.0 3.3 96.8 2.1 1.1
10607 2.8 1.4 0.2 0.0 4.4 94.7 4.6 0.7
10609 2.2 0.8 0.0 0.1 3.1 96.7 2.3 1.0
15S.49004 1.6 1.1 0.9 0.0 3.6 61.8 38.2 0.0
E28Z.00569 2.4 1.0 0.3 0.0 3.8 90.8 9.0 0.1
E28Z.00628 3.8 1.0 0.5 0.0 5.3 88.7 11.2 0.1
SV0474YG 2.9 1.3 0.3 0.0 4.4 92.9 6.7 0.4
SV0914YG 2.3 0.7 0.1 0.2 3.3 91.7 5.0 3.4
SV6009YG 3.0 1.8 0.5 0.1 5.4 88.2 9.4 2.4
SV9043YG 3.5 1.3 0.4 0.0 5.2 94.0 6.0 0.0
Bejo 3043 2.9 1.1 0.2 0.0 4.2 95.3 4.6 0.1
Green Machine 1.8 0.8 0.3 0.1 2.9 87.2 11.4 1.4
Modena 2.8 1.3 0.2 0.0 4.4 94.6 4.6 0.8
Respect 3.8 1.3 0.2 0.0 5.3 96.1 3.9 0.0
Spineless Beauty 3.0 1.2 0.2 0.0 4.4 95.0 4.5 0.5
Spineless Perfection 3.2 1.4 0.2 0.1 4.9 94.5 4.4 1.0
Average 2.8 1.1 0.3 0.0 4.2 91.2 8.0 0.8
LSD (0.05) NS 0.6 0.5 * NS 15 13 9

1 Total of 15 harvests.
2 Marketable fruit are graded into U.S. No. 1 (requires younger and more tender squash than U.S. No. 2 which are permitted to be more mature and allows greater surface area to be affected by defects).
3 Culls consisted primarily of mishaped fruit.
4 Fruit were discolored or rough/disfigured due to virus.
*Virus incidence was low in harvests weeks (1-5) and (6-10); these data were not statistically different, therefore,
they are only presented as observations.
NS indicates data were not statistically significant.

Table 6. Zucchini Squash cultigen trial yields, cumulative fruit number per plant, among all harvests1. Clayton, NC, 2016.

Cultivar

Marketable2

 Culls3

 Virus4

Total

Percent Marketable

 Cull

 Virus

 #1

 #2

10569 4.8 0.9 0.2 0.1 6.1 94.9 3.4 1.7
10607 5.2 2.3 0.6 0.1 8.1 91.9 7.0 1.1
10609 3.6 1.2 0.2 0.1 5.2 92.8 5.6 1.6
15S.49004 2.6 1.8 1.4 0.0 5.7 65.2 34.8 0.0
E28Z.00569 4.9 1.9 1.7 0.0 8.5 78.6 21.1 0.3
E28Z.00628 7.4 1.8 1.9 0.1 11.2 81.4 18.0 0.6
SV0474YG 5.4 2.1 0.9 0.0 8.4 88.2 11.4 0.4
SV0914YG 3.6 1.3 0.4 0.4 5.6 87.5 7.8 4.7
SV6009YG 5.3 2.7 1.3 0.3 9.6 83.7 13.1 3.2
SV9043YG 6.2 2.1 1.9 0.0 10.2 82.0 18.0 0.0
Bejo 3043 5.8 1.7 0.7 0.0 8.2 91.3 8.4 0.3
Green Machine 3.8 1.3 1.4 0.1 6.5 77.2 21.7 1.1
Modena 5.2 2.0 0.8 0.1 8.0 89.5 9.5 1.0
Respect 7.4 2.2 1.0 0.0 10.6 90.6 9.4 0.0
Spineless Beauty 5.0 1.8 0.6 0.1 7.5 91.3 7.4 1.3
Spineless Perfection 5.1 2.2 0.4 0.1 7.8 94.1 5.1 0.8
Average 5.1 1.8 1.0 0.1 8.0 86.3 12.6 1.1
LSD (0.05) 2.8 1.0 0.8 0.7 3.6 13.7 11.8 8.8

1 Total of 15 harvests.
2 Marketable fruit are graded into U.S. No. 1 (requires younger and more tender squash than U.S. No. 2 which are permitted to be more mature and allows greater surface area to be affected by defects).
3 Culls consisted of primarily misshaped fruit.
4 Fruit were discolored or rough/disfigured due to virus.

Table 7. Zucchini squash cultigen trials. Cumulative fruit number per acre and percentages, among all harvests1. Clayton, Fall, 2016.

Cultivar

   Marketable2

 Culls3

 Virus4

 Total

Percent Marketable

Percent Culls

Percent Virus

 #1

 #2

10569 20582 4029 871 545 26027 94.9 3.4 1.7
10607 21018 9257 2287 327 32888 91.9 7.0 1.1
10609 15791 5227 980 545 22542 92.8 5.6 1.6
15S.49004 2831 2287 2287 0 7405 65.2 34.8 0.0
E28Z.00569 21344 8168 7514 109 37135 78.6 21.1 0.3
E28Z.00628 32343 7950 8385 218 48896 81.4 18.0 0.6
SV0474YG 23305 8930 4029 109 36373 88.2 11.4 0.4
SV0914YG 11652 3812 1307 1198 17969 87.5 7.8 4.7
SV6009YG 22325 11652 5336 1307 40620 83.7 13.1 3.2
SV9043YG 24829 8385 7623 0 40838 82.0 18.0 0.0
Bejo 3043 25265 7296 2940 109 35610 91.3 8.4 0.3
Green Machine 14702 4901 5336 327 25265 77.2 21.7 1.1
Modena 22542 8494 3267 327 34630 89.5 9.5 1.0
Respect 32234 9583 4247 0 46065 90.6 9.4 0.0
Spineless Beauty 21889 7732 2396 436 32452 91.3 7.4 1.4
Spineless Perfection 21998 9474 1634 327 33432 94.1 5.1 0.8
Average 20916 7324 3777 368 32384 86.3 12.6 1.1
LSD (0.05) 10546 3299 2527 2962 13213 13.7 11.8 8.8

1 Total of 15 harvests.
2 Marketable fruit are graded into U.S. No. 1 (requires younger and more tender squash than U.S. No. 2 which are permitted to be more
mature and allows greater surface area to be affected by defects).
3 Culls consisted of primarily misshaped fruit.
4 Fruit were discolored or rough/disfigured due to virus.

Table 8. Zucchini squash cultigen trial yields¹. Number of fruit per acre by grade per indicated harvests for replicated treatments, Clayton, NC, 2016.

Cultivar

Marketable2 #1

Marketable2 #2

 1-5

 6-10

 11-15

 1-5

 6-10

 11-15

10569 4465 10672 5445 1198 2287 545
10607 7514 8712 4792 1634 5881 1742
10609 3376 8930 3485 545 3594 1089
15S.49004 436 1416 980 109 1742 436
E28Z.00569 6316 10454 4574 2287 4574 1307
E28Z.00628 6861 14593 10890 2178 4356 1416
SV0474YG 6098 11435 5772 3485 3920 1525
SV0914YG 980 6752 3920 545 2069 1198
SV6009YG 8276 10128 3920 2505 6425 2723
SV9043YG 5990 12306 6534 2396 4683 1307
Bejo 3043 5881 11108 8276 2178 4138 980
Green Machine 4901 7187 2614 1416 2940 545
Modena 3485 10890 8168 2069 4465 1960
Respect 10672 14266 7296 2614 5772 1198
Spineless Beauty 6207 10672 5009 1307 5227 1198
Spineless Perfection 6207 11217 4574 1634 4792 3049
LSD (0.05) 3470 5069 3885 1438 2184 1369

Cultivar

Culls3

Virus4

 1-5

 6-10

 11-15

 1-5

 6-10

 11-15

10569 327 218 327 0 109 436
10607 545 1198 545 0 0 327
10609 653 327 0 0 0 545
15S.49004 109 1198 980 0 0 0
E28Z.00569 4138 2723 653 0 0 109
E28Z.00628 4465 2723 1198 0 109 109
SV0474YG 1742 1851 436 109 0 0
SV0914YG 109 327 871 0 0 1198
SV6009YG 1525 2178 1634 0 0 1307
SV9043YG 4138 2614 871 0 0 0
Bejo 3043 1525 871 545 0 0 109
Green Machine 2287 2069 980 0 0 327
Modena 327 2287 653 0 109 218
Respect 2614 1198 436 0 0 0
Spineless Beauty 327 762 1307 0 0 436
Spineless Perfection 218 762 653 0 0 327
LSD (0.05) 1486 1482 988 * * 1838
Cultivar Total
 1-5  6-10  11-15
10569 5990 13286 6752
10607 9692 15791 7405
10609 4574 12850 5118
15S.49004 653 4356 2396
E28Z.00569 12741 17751 6643
E28Z.00628 13504 21780 13613
SV0474YG 11435 17206 7732
SV0914YG 1634 9148 7187
SV6009YG 12306 18731 9583
SV9043YG 12524 19602 8712
Bejo 3043 9583 16117 9910
Green Machine 8603 12197 4465
Modena 5881 17751 10999
Respect 15899 21236 8930
Spineless Beauty 7841 16662 7950
Spineless Perfection 8059 16771 8603
LSD (0.05) 4501 5815 5193

1Total of 15 harvests. Planting was 28 July 2016. Harvests 1-5 occurred on 31 August; 2, 5, 7 and 9 September; Harvests 6-10 occurred on 12, 14, 16, 19 and 21 September; Harvests 11-15 occurred on 23, 26, 28 and 30 September; 3 October.
2 Marketable fruit are graded into U.S. No. 1 (requires younger and more tender squash than U.S. No. 2 which are permitted to be more mature and allows greater
surface area to be affected by defects).
3 Culls consisted of primarily misshaped fruit.
4 Fruit were discolored or rough/disfigured due to virus.
*Virus incidence was low in harvests weeks (1-5) and (6-10); these data were not statistically different, therefore, they are only presented as observations.

Table 9. Zucchini squash cultigen trials¹. Percent fruit number per acre per indicated harvests, Clayton, NC, 2016.1

Cultivar

Marketable² #1

Marketable³ #2

 1-5

 6-10

 11-15

 1-5

 6-10

 11-15

10569 73.1 78.6 81.0 22.5 19.8 10.4
10607 79.2 56.4 64.7 14.9 36.7 22.1
10609 72.9 69.0 59.5 10.4 28.0 35.8
15S.49004 50.0 29.4 40.4 25.0 39.8 19.2
E28Z.00569 49.9 60.7 62.7 18.2 24.3 22.2
E28Z.00628 51.2 66.2 79.6 17.0 19.1 10.0
SV0474YG 48.6 65.7 75.6 31.9 24.0 19.2
SV0914YG 75.0 73.5 59.8 18.8 22.1 16.9
SV6009YG 66.9 53.7 38.0 20.4 34.6 32.2
SV9043YG 48.4 63.7 73.0 20.1 23.7 16.0
Bejo 3043 61.2 69.0 84.1 22.8 25.5 7.9
Green Machine 57.8 58.6 59.0 15.7 24.6 11.9
Modena 59.2 61.5 72.7 35.4 25.2 19.1
Respect 67.1 66.8 83.1 16.3 27.6 12.9
Spineless Beauty 77.6 64.6 61.4 19.3 30.9 15.9
Spineless Perfection 80.1 63.7 58.3 16.4 30.6 31.4
Average 63.6 62.6 65.8 20.3 27.3 18.9
LSD (0.05) 28.2 15.4 28.9 24.7 12.0 25.5

Cultivar

Culls3

Virus4

 1-5

 6-10

 11-15

 1-5

 6-10

 11-15

10569 4.4 1.1 4.4 0.0 0.5 4.2
10607 5.9 6.9 8.3 0.0 0.0 4.8
10609 16.7 3.0 0.0 0.0 0.0 4.6
15S.49004 25.0 30.9 40.4 0.0 0.0 0.0
E28Z.00569 32.0 15.0 13.7 0.0 0.0 1.5
E28Z.00628 31.8 14.0 9.7 0.0 0.8 0.6
SV0474YG 18.2 10.4 5.2 1.3 0.0 0.0
SV0914YG 6.3 4.4 11.7 0.0 0.0 11.5
SV6009YG 12.7 11.7 16.2 0.0 0.0 13.6
SV9043YG 31.5 12.6 11.0 0.0 0.0 0.0
Bejo 3043 16.0 5.6 7.3 0.0 0.0 0.7
Green Machine 26.4 16.8 21.4 0.0 0.0 7.7
Modena 5.4 12.7 6.6 0.0 0.7 1.6
Respect 16.6 5.7 4.0 0.0 0.0 0.0
Spineless Beauty 3.1 4.5 16.1 0.0 0.0 6.7
Spineless Perfection 3.6 5.7 6.7 0.0 0.0 3.5
Average 16.0 10.1 11.4 0.1 0.1 3.8
LSD (0.05) 21.9 11.6 17.9 * * 11.1

1 Total of 15 harvests. Planting was 28 July 2016. Harvests 1-5 occurred on 31 August; 2, 5, 7 and 9 September; Harvests 6-10 occurred on 12, 14, 16, 19 and 21 September; Harvests 11-15 occurred on 23, 26, 28 and 30 September; 3 October.
2 Marketable fruit are graded into U.S. No. 1 (requires younger and more tender squash than U.S. No. 2 which are permitted to be more mature and allows greater surface area to be affected by defects).
3 Culls consisted of primarily misshaped fruit.
4 Fruit were discolored or rough/disfigured due to virus.
*Virus incidence was low in harvests weeks (1-5) and (6-10); these data were not statistically different, therefore, they are only presented as observations.

Table 10. Zucchini Squash cultigen trial – Percent plant stand and average fruit length and width among replicated treatments, Clayton, NC, 2016.

Cultivar

% Stand¹

Fruit Size (cm) 2

Avg. Length

Fruit Size (cm) 2

Avg. Width

10569 98 17.2 5.0
10607 95 16.9 4.8
10609 100 17.5 5.2
15S.49004 30 14.7 4.6
E28Z.00569 100 18.8 4.9
E28Z.00628 100 19.4 5.2
SV0474YG 100 17.0 4.9
SV0914YG 93 17.5 4.8
SV6009YG 98 17.2 5.0
SV9043YG 100 19.1 5.2
Bejo 3043 100 17.4 4.9
Green Machine 90 17.1 4.3
Modena 100 18.3 4.6
Respect 100 18.9 5.1
Spineless Beauty 100 19.5 5.4
Spineless Perfection 98 19.1 5.2
Average 94 17.8 4.9
LSD (0.05) 3.1 0.9

1 Final plant stand count was taken on 31 August 2016.
2 Fruit Size was obtained using the average length and width of 5 US No. 1 fruits from harvest 7 on
14 September 2016.