Skip to main content

NC State Extension

2018 Zucchini Squash Cultigen Evaluations

Horticulture Series # 224

Jonathan R. Schultheis & Keith D. Starke, Department of Horticultural Science

General Cultural Practices

The squash study was established on black plastic mulch. Pesticides used on all plots were chemicals labelled for that crop, 2018 North Carolina Agricultural Chemicals Manual.

Acknowledgements

2018 squash booklet

View the pdf version of the 2018 squash evaluations

We gratefully acknowledge the assistance of Cathy Herring, (Superintendent), and Charles Barrow, (Horticulture Supervisor, 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 want to acknowledge the following summer employees for their assistance with the trials: Chandler Fulmer, Benjamin Indermaur, Tanner Seay, Shannon Dexter, Elizabeth Indermaur, as well as, graduate student; Fernando Montero De Espinosa. We would also like to thank Joy Smith for conducting the statistical analysis on the data that was collected in this trial. The cooperation and support of Clifton, Bejo, Enza Zaden, HM Clause, Seedway, Seminis/Monsanto, and Syngenta are also appreciated. View the pdf version of the 2018 squash evaluations.

Disclaimer

This publication presents data from the cultivar evaluation trial conducted during 2018. 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.

Zucchini Squash Cultural Practices for 2018 Cultigen Study, Central Crops Research Station; Clayton, NC

Introduction

In 2018, summer squash production totaled2,400 acres in North Carolina. Summer squash remains an important crop to North Carolina producers as the state ranked 7th among those states that produced the crop nationwide in 2013. Summer squash ranks among the top 10 vegetables grown in North Carolina. Squash represents significant economic importance to North Carolina growers with a crop value of $10.1 million in 2017. North Carolina growers have maintained their competitiveness through producing squash varieties that are highly desired by the consumer. In an effort to remain competitive in the marketplace and maximize profitability growers seek to grow squash varieties that will provide them with the highest yields and greatest overall fruit quality. The zucchini market in North Carolina has typically been supplied with a medium green fruit, however, some markets have seen increased demand for cultivars that produce a darker green fruit. Summer squash plantings in North Carolina typically experience higher incidence of disease and insect pressure as they are harvested in the fall when environmental factors favor increased presence of these plant pests. In 2018 the field trial was planted on 4 May and we began harvesting on 4 June. The squash were rated for marketable and nonmarketable yields, for early and late production, and for consistency of production throughout the harvest period. Quality measurements were collected and average plant stand counts were calculated to conduct the most complete evaluation of each cultivar in the field trial. We again included the number of fruit produced per plant over various harvest intervals, and for the entire production season to compliment the yield data.

Materials and Methods

Seeds were sown on 4 May 2018. Hills with seed skips were replanted 5 days after planting to maximize plant stand counts in each plot. Final stand counts were taken on 25 May (approx. 3 weeks after initial planting). The study area was treated with Telone C-17 (10 gal/ac) on 1 November 2017. A broadcast equivalent application of 12-6-24 pre-plant fertilizer (400 lb/ac) was made across the entire trial area on 23 April 2018. Black plastic mulch (0.70 mil thick high density film, 48 inches wide; B.B. Hobbs, Clinton, NC ) and drip irrigation tape (NETAFIM, 12 inch spacing, 0.24 gal/hr; NETAFIM, Tel Aviv, Israel) with these materials being laid out in the field on 23 April 2018. The herbicides Prefar (5 qts/ac), Sonolan (4 pts/ac) and Honcho (2 qts/ac) were applied to row middles on 4 May 2018. The insecticides Asana, Assail, FanFare, Endosulfan, were rotated and applied as a preventative measure beginning 15 May and on the following dates: 23 and 31 May; 6, 13, 20 and 27 June 2018. The following fungicide products were used as a preventive measure and on a rotational basis throughout the entire growing season: Presidio, Pristine, Procure, Proline 480, Ranman, and Zampro. The first fungicide application was made on 31 May; and on the following dates 6, 13, 20 and 27 June 2018. Liquid fertilizer (7-0-7) was applied through drip irrigation beginning 10 May and on the following dates: 16, 23 and 30 May; 6, 13, 20, 27 and 29 June. Harvests were conducted three times per week for the trial with a total of 13 harvests. The first harvest was 4 June and the final harvest (#13) was completed on 2 July 2018.

Most fruit were harvested when the blossom was detached from the fruit, and then categorized as marketable or nonmarketable. Fruit that were small or undersized, or were misshapen, were categorized as culls (non-marketable). Graded fruit were weighed and counted for each category and plot. The study design was a randomized complete block with four replications. Other than yield, other quality measurements taken were: percent plant stand and average fruit length and width. Overall, plant stands were excellent at 100%. Disease and insect pressure were very minimal, therefore, overall fruit yield and quality were very good for the entire study. The highest yielding (> 700 boxes/acre) cultigens (advanced line or cultivar) for marketable fruit in early harvests (1-4) were Ladoga and SV9494YG, while the lowest yielding (< 500 boxes/acre) were Sanabria, Spineless King, SV0914YG and SV9043YG (Table 1). Mid-season included 5 harvests (5-9). Yields were higher for all cultigens in the mid-season versus the early or late season harvests (10-13). The highest yielding mid-season cultigens (> 800 boxes/acre) were Cash Machine, Ladoga and SV9494YG, while yields were again highest for the late harvests for these same three cultigens. The highest cull fruit production was in the late harvests for all cultigens except Leopard. The cultigens that produced the most culls were Zucchini Elite and SVYG6633. No virus symptoms were observed in any fruit.

Marketable yields across all harvests (13) were greatest (> 2000 boxes/acre) for Cash Machine, Ladoga and SV94949YG while Bejo 3251, Sanabria and Zucchini Elite had the lowest marketable yields (<1500 boxes/acre) (Table 2). Cull fruit production was highest for Zucchini Elite (479 boxes/acre, 24% of fruit produced) followed by SVYG6633 (364 boxes/acre, 18% of fruit produced). Disease pressure was minimal throughout the season in this study, however, insect pressure was managed well through the early and mid-season harvests but increased pest presence in the late harvests (10-13) may have impacted fruit quality. Marketable fruit was 88% across all entries for the season (Table 2). Entries that performed well above the average were SVYG5395 (95%), Leopard (94%), SV0914YG ((93%), SV6009 and SV9494YG (92%), Ladoga (91%). The entry with the highest cumulative yield (13 harvests) of marketable fruit was SV9494YG (2192 boxes/acre) and Bejo 3251 (1485 boxes/acre) was the lowest.

The highest percentage of marketable squash, averaged across entries, was obtained in the mid-season harvests (5-9) (95%) followed by early season harvests (1-4) (90%) and late season harvests (9-12) (75 %) (Table 3). The percentage yield of marketable fruit was especially high for SV0914 (97%), Ladoga (96%), SV6009YG and SVYG5395 were (95%) for early season harvests (1-4); Leopard, Sanabria and SVYG5395 were (99%); Bejo 3251 and SV6009YG were (97%) for mid-season harvests (5-9); and for late season harvests (10-13) SVYG5395 (89%) and Leopard yielded (88%) marketable fruit.

The average number of fruit per plant for each entry during three harvest intervals are shown in Table 4. Cumulative marketable fruit weight per plant over all harvests (13) averaged 88% (Table 5), while cumulative marketable fruit number per plant averaged 83% (Table 6).

The cumulative number of fruits per acre for each cultigen across all harvests (13) and for each grade are provided in (Table 7). The number of fruits per acre for each cultigen for early season harvests (1-4), mid-season harvests (5-9) and late season harvests (10-13) are provided in Table 8, with corresponding percentages in Table 9.

Plant stands were excellent (100%) for all cultigens and average fruit length and widths were determined (Table 10). In this trial Cash Machine, Spineless King, Zucchini Elite and SV9494YG produced longer fruits. In addition, all plots in the study were rated for the following characteristics, plant canopy, foliage color, presence or absence of spines and overall vigor (Table 11). Cultigens with a dense canopy included Ladoga, Sanabria and Spineless King, while cultigens with the least dense canopies were Bejo 3251, SV6009YG and SVYG5395. Cultigens with few or no spines were Spineless King and SVYG6633. The most vigorous vine growth was recorded on Spineless King, while cultigens with the least vigorous vines were SVYG5395 and Cash Machine.

Summary

Overall, yields and fruit quality in this study were excellent. Excellent growing conditions with minimal pest pressure were important factors that contributed to these results.

Zucchini Squash Cultigen and Seed Company

  • Cash Machine – Enza Zaden
  • Green Machine – Enza Zaden
  • Ladoga – Bejo
  • Leopard – HM Clause
  • Payload – Syngenta
  • Sanabria – Bejo
  • Spineless King – Seedway
  • Zucchini Elite – Clifton Seed
  • Bejo 3251 – Bejo
  • SV6009YG – Seminis
  • SV0914YG – Seminis
  • SV9043YG – Seminis
  • SV9494YG – Seminis
  • SVYG5395 – Seminis
  • SVYG6633 – Seminis

View Images of 15 Zucchini cultigens on page 7 of the pdf booklet

Table 1. Zucchini Squash cultigen study yields¹, number of 20 lb boxes per acre, per indicated harvests for replicated treatments. Clayton, NC, 2018.

Number of 20 pound boxes per acre

Cultigen

Marketable

Culls²

Hvsts.
1 – 4

Hvsts.
5 – 9

Hvsts.
10 – 13

Hvsts.
1 – 4

Hvsts.
5 – 9

Hvsts.
10 – 13

Cash Machine 610 866 592 130 45 149
Green Machine 585 674 364 111 65 118
Ladoga 724 809 501 33 34 130
Leopard 680 715 462 56 4 52
Payload 614 737 337 51 50 163
Sanabria 427 729 333 60 8 147
Spineless King 449 653 418 54 41 167
Zucchini Elite 625 638 224 140 46 293
Bejo 3251 503 607 375 70 21 95
SV6009YG 588 727 411 33 25 95
SV0914YG 442 773 391 16 20 80
SV9043YG 441 769 426 65 34 98
SV9494YG 755 937 500 51 38 105
SVYG5395 552 720 431 36 8 50
SVYG6633 622 646 381 59 65 240
Average 574 733 410 64 34 132
LSD (0.05) 124 202 124 60 40 92

1 Total of 13 harvests. Planting was 4 May 2018. Harvests 1-4 occurred on 4, 6, 8 and 11 June; Harvests 5-9 occurred on 13, 15, 18, 20 and 22 June; Harvests 10-13 occurred on 25, 27, 29 June and 2  July 2018.
2 Culls consisted primarily of misshaped fruit.

Number of 20 pound boxes per acre

Cultigen

Virus³

Total

Hvsts.
1 – 4

Hvsts.
5 – 9

Hvsts.
10 – 13

Hvsts.
1 – 4

Hvsts.
5 – 9

Hvsts.
10 – 13

Cash Machine 0 0 0 659 812 653
Green Machine 0 0 0 695 738 482
Ladoga 0 0 0 757 843 631
Leopard 0 0 0 736 719 515
Payload 0 0 0 664 786 500
Sanabria 0 0 0 488 736 480
Spineless King 0 0 0 504 695 584
Zucchini Elite 0 0 0 765 683 517
Bejo 3251 0 0 0 573 628 470
SV6009YG 0 0 0 620 752 505
SV0914YG 0 0 0 458 793 471
SV9043YG 0 0 0 505 803 524
SV9494YG 0 0 0 806 975 605
SVYG5395 0 0 0 589 729 481
SVYG6633 0 0 0 682 711 621
Average 0 0 0 633 760 536
LSD (0.05) 0 0 0 144 206 112

3 Fruit were discolored or rough/disfigured due to virus.

Table 2. Zucchini Squash cultigen study yields, cumulative boxes, (20 lbs.), per acre, among all harvests1. Clayton, NC, 2018.

 Cultigen

Marketable

 Culls

 Virus3

 Total4

% Marketable

%

Cull

%

Virus

Cash Machine 2069 358 0 2426 85 15 0
Green Machine 1623 293 0 1916 84 16 0
Ladoga 2034 197 0 2231 91 9 0
Leopard 1858 112 0 1969 94 6 0
Payload 1687 263 0 1950 87 13 0
Sanabria 1489 215 0 1704 87 13 0
Spineless King 1520 262 0 1783 85 15 0
Zucchini Elite 1486 479 0 1965 76 24 0
Bejo 3251 1485 186 0 1671 89 11 0
SV6009YG 1725 152 0 1877 92 8 0
SV0914YG 1606 116 0 1722 93 7 0
SV9043YG 1636 197 0 1833 89 11 0
SV9494YG 2192 193 0 2385 92 8 0
SVYG5395 1704 95 0 1798 95 5 0
SVYG6633 1650 364 0 2014 82 18 0
Average 1700 230 0 1930 88 12 0
LSD (0.05) 322 118 0 351 6 6 0

1 Total of 13 harvests. Planting was 4 May 2018. Harvests 1-4 occurred on 4, 6, 8 and 11 June; Harvests 5-9 occurred on 13, 15, 18, 20 and 22 June; Harvests 10-13 occurred on 25, 27, 29 June and 2 July 2018.
2 Culls consisted primarily of misshaped fruit.
Fruit were discolored or rough/disfigured due to virus.

Table 3. Zucchini Squash cultigen study yields¹. Percentage marketable, cull, and virus symptomatic fruit per indicated harvests by number of 20 lb boxes for replicated treatments. Clayton, NC, 2018.

Percentage (%) of yield based upon grade.

 Cultigen

Marketable 

Culls

Virus

1 – 4 5 – 9 10 – 13 1 – 4 5 – 9 10 – 13 1 – 4 5 – 9 10 – 13
Cash Machine 81 95 79 19 5 21 0 0 0
Green Machine 84 90 74 16 10 26 0 0 0
Ladoga 96 96 80 4 4 20 0 0 0
Leopard 92 99 88 8 1 12 0 0 0
Payload 93 94 67 7 6 33 0 0 0
Sanabria 88 99 67 12 1 33 0 0 0
Spineless King 89 94 72 11 6 28 0 0 0
Zucchini Elite 81 93 42 19 7 58 0 0 0
Bejo 3251 89 97 81 11 3 19 0 0 0
SV6009YG 95 97 82 5 3 18 0 0 0
SV0914YG 97 98 83 3 2 17 0 0 0
SV9043YG 86 96 83 14 4 17 0 0 0
SV9494YG 94 96 82 6 4 18 0 0 0
SVYG5395 95 99 89 5 1 11 0 0 0
SVYG6633 92 91 61 8 9 39 0 0 0
Average 90 95 75 10 5 25 0 0 0
LSD (0.05) 9 6 16 9 6 16 0 0 0

1 Total of 13 harvests. Planting was 4 May 2018. Harvests 1-4 occurred on 4, 6, 8 and 11 June; Harvests 5-9 occurred on 13, 15, 18, 20 and 22 June;  Harvests 10-13 occurred on 25, 27, 29 June and 2 July 2018.
2 Culls consisted primarily of misshaped fruit.
3 Fruit were discolored or rough/disfigured due to virus.

Table 4. Zucchini Squash cultigen study yields1, average number of fruit per plant, per indicated harvests for replicated treatments. Clayton, NC, 2018.

Number of fruit per plant per harvest period2

Cultigen

 Marketable

 Culls3

Hvsts.

1 – 4

Hvsts.

5 – 9

Hvsts.

10 – 13

Hvsts.

1 – 4

Hvsts.

5 – 9

Hvsts.

10 – 13

Cash Machine 4 6 3 2 0 1
Green Machine 4 4 3 2 1 1
Ladoga 4 4 3 0 0 1
Leopard 4 4 3 1 0 0
Payload 3 5 3 1 1 1
Sanabria 2 4 3 1 0 1
Spineless King 2 4 3 1 0 1
Zucchini Elite 4 4 2 2 0 2
Bejo 3251 3 4 3 1 0 1
SV6009YG 3 4 3 0 0 1
SV0914YG 3 5 3 0 0 1
SV9043YG 2 4 3 0 1 1
SV9494YG 4 6 3 1 0 1
SVYG5395 3 5 3 1 0 1
SVYG6633 3 4 3 1 1 2
Average 3 4 3 1 0 1
LSD (0.05) 1 1 1 1 0 1

Number of fruit per plant per harvest period2

Cultigen

 Virus4

 Total

Hvsts.
1 – 4

Hvsts.
5 – 9

Hvsts.
10 – 13

Hvsts.
1 – 4

Hvsts.
5 – 9

Hvsts.
10 – 13

Cash Machine 0 0 0 5 6 5
Green Machine 0 0 0 5 5 4
Ladoga 0 0 0 4 5 4
Leopard 0 0 0 4 4 3
Payload 0 0 0 4 5 4
Sanabria 0 0 0 3 5 4
Spineless King 0 0 0 3 4 3
Zucchini Elite 0 0 0 5 4 4
Bejo 3251 0 0 0 4 4 3
SV6009YG 0 0 0 3 4 4
SV0914YG 0 0 0 3 5 4
SV9043YG 0 0 0 3 5 4
SV9494YG 0 0 0 5 6 4
SVYG5395 0 0 0 4 5 4
SVYG6633 0 0 0 5 5 5
Average 0 0 0 4 5 4
LSD (0.05) 0 0 0 1 1 1

1 Total of 13 harvests. Planting was 4 May 2018. Harvests 1-4 occurred on 4, 6, 8 and 11 June; Harvests 5-9 occurred on 13, 15, 18, 20 and 22 June; Harvests 10-13 occurred on 25, 27, 29 June and 2 July 2018.
2 Average number of fruit harvested from each plant at each harvest period (i.e.: 1-5; 6-10; 11-15).
3 Culls consisted primarily of misshaped fruit.
4 Fruit were discolored or rough/disfigured due to virus.

Table 5 . Zucchini squash cultigen study. Cumulative fruit weight and percent per plant among all harvests¹. Clayton, NC, 2018.

  Cultigen

 Marketable

 Culls2

 Virus3

 Total

 %Marketable

 %Culls

 %Virus

Cash Machine 9.5 1.5 0.0 9.8 85.4 14.6 0.0
Green Machine 7.4 1.3 0.0 8.8 83.8 16.2 0.0
Ladoga 9.3 0.9 0.0 10.2 91.1 8.9 0.0
Leopard 8.5 0.5 0.0 9.0 94.2 5.8 0.0
Payload 7.7 1.2 0.0 9.0 86.6 13.4 0.0
Sanabria 6.8 1.0 0.0 7.8 87.2 12.8 0.0
Spineless King 7.0 1.2 0.0 8.2 85.3 14.7 0.0
Zucchini Elite 6.8 2.2 0.0 9.0 75.6 24.4 0.0
Bejo 3251 6.8 0.9 0.0 7.7 89.5 10.5 0.0
SV6009YG 7.9 0.7 0.0 8.6 92.2 7.8 0.0
SV0914YG 7.4 0.5 0.0 7.9 93.1 6.9 0.0
SV9043YG 7.5 0.9 0.0 8.4 89.0 11.0 0.0
SV9494YG 10.1 0.9 0.0 11.0 91.9 8.1 0.0
SVYG5395 7.8 0.4 0.0 8.3 94.6 5.4 0.0
SVYG6633 7.6 1.7 0.0 9.2 81.9 18.1 0.0
Average 7.9 1.1 0.0 8.9 88.1 11.9 0.0
LSD (0.05) 1.5 0.5 0.0 1.6 5.6 5.6 0.0

1 Total of 13 harvests.
2 Culls consisted primarily of mishaped fruit.
3 Fruit were discolored or rough/disfigured due to virus.

Table 6. Zucchini squash cultigen study yields, cumulative fruit number per plant and percent per grade among all harvests¹. Clayton, NC, 2018.

 Cultigen

 Marketable

 Culls²

 Virus³

Total

% Marketable

% Culls

% Virus

Cash Machine 11 3 0 14 78 22 0
Green Machine 10 3 0 14 75 25 0
Ladoga 11 2 0 13 87 13 0
Leopard 11 1 0 12 91 9 0
Payload 11 3 0 13 81 19 0
Sanabria 10 2 0 12 82 18 0
Spineless King 8 2 0 11 81 19 0
Zucchini Elite 10 4 0 14 72 28 0
Bejo 3251 9 2 0 11 85 15 0
SV6009YG 10 1 0 12 87 13 0
SV0914YG 10 1 0 11 91 9 0
SV9043YG 9 2 0 11 84 16 0
SV9494YG 14 2 0 16 88 12 0
SVYG5395 11 1 0 12 88 12 0
SVYG6633 10 5 0 15 69 31 0
Average 10 2 0 13 83 17 0
LSD (0.05) 2 1 0 2 7 7 0

1 Total of 13 harvests.
2 Culls consisted of primarily misshaped fruit.
3 Fruit were discolored or rough/disfigured due to virus.

Table 7. Zucchini squash cultigen study. Cumulative fruit number per acre and percentages, among all harvests¹. Clayton, NC, 2018.

 Cultigen

 Marketable

 Culls

 Virus3

 Total

 % Marketable

 % Culls

 % Virus

Cash Machine 54341 14919 0 69260 78 22 0
Green Machine 45629 14702 0 60331 75 25 0
Ladoga 49005 7079 0 56084 87 13 0
Leopard 47807 4901 0 52708 91 9 0
Payload 47154 11543 0 58697 81 19 0
Sanabria 42689 9039 0 51728 82 18 0
Spineless King 36917 8821 0 45738 81 19 0
Zucchini Elite 42689 16771 0 59459 72 28 0
Bejo 3251 41273 7841 0 49114 85 15 0
SV6009YG 44105 6425 0 50530 87 13 0
SV0914YG 44758 4574 0 49332 91 9 0
SV9043YG 40402 7623 0 48025 84 16 0
SV9494YG 59786 8494 0 68280 88 12 0
SVYG5395 45847 6425 0 52272 88 12 0
SVYG6633 43778 19602 0 63380 69 31 0
Average 45745 9917 0 55662 83 17 0
LSD (0.05) 7756 4201 0 8443 7 7 0

1 Total of 13 harvests.
2 Culls consisted of primarily misshaped fruit.
3 Fruit were discolored or rough/disfigured due to virus.

Table 8. Zucchini squash cultigen study yields1. Number of fruit per acre by grade per indicated harvests for replicated treatments. Clayton, NC, 2018.

Number of fruit per acre per harvest period

Cultigen

 Marketable

 Culls²

Hvsts.
1 – 4

Hvsts.
5 – 9

Hvsts.
10 – 13

Hvsts.
1 – 4

Hvsts.
5 – 9

Hvsts.
10 – 13

Cash Machine 15464 24176 14702 8168 1634 5118
Green Machine 15573 18840 11217 7950 2287 4465
Ladoga 16008 19493 13504 1851 1307 3920
Leopard 16444 18731 12632 2723 436 1742
Payload 15246 19711 12197 3267 3158 5118
Sanabria 10890 19493 12306 2831 653 5554
Spineless King 9583 16444 10890 2505 2069 4247
Zucchini Elite 16117 16771 9801 6752 1851 8168
Bejo 3251 12632 16553 12088 4247 980 2614
SV6009YG 13613 18186 12306 1525 871 4029
SV0914YG 11217 20038 13504 871 980 2723
SV9043YG 9583 18077 12741 2069 2614 2940
SV9494YG 19275 25918 14593 2178 1960 4356
SVYG5395 12524 19602 13721 3376 762 2287
SVYG6633 14484 16662 12632 5554 4792 9257
Average 13910 19246 12589 3724 1757 4436
LSD (0.05) 4496 3808 3659 2479 1349 2768

Cultigen

 Virus³

 Total

Hvsts.

1 – 4

Hvsts.

5 – 9

Hvsts.

10 – 13

Hvsts.

1 – 4

Hvsts.

5 – 9

Hvsts.

10 – 13

Cash Machine 0 0 0 23631 21127 19820
Green Machine 0 0 0 23522 21127 15682
Ladoga 0 0 0 17860 20800 17424
Leopard 0 0 0 19166 19166 14375
Payload 0 0 0 18513 22869 17315
Sanabria 0 0 0 13721 20147 17860
Spineless King 0 0 0 12088 18513 15137
Zucchini Elite 0 0 0 22869 18622 17968
Bejo 3251 0 0 0 16880 17533 14702
SV6009YG 0 0 0 15137 19058 16335
SV0914YG 0 0 0 12088 21018 16226
SV9043YG 0 0 0 11652 20691 15682
SV9494YG 0 0 0 21453 27878 18949
SVYG5395 0 0 0 15899 20364 16008
SVYG6633 0 0 0 20038 21453 21889
Average 0 0 0 17635 20691 17025
LSD (0.05) 0 0 0 5210 4042 2978

1 Total of 13 harvests. Planting was 4 May 2018. Harvests 1-4 occurred on 4, 6, 8 and 11 June; Harvests 5-9 occurred on 13, 15, 18, 20 and 22 June; Harvests 10-13 occurred on 25,   27, 29 June and 2  July 2018.
2 Culls consisted of primarily misshaped fruit.
3 Fruit were discolored or rough/disfigured due to virus.

Table 9. Zucchini squash cultigen study¹. Percent fruit number per acre per indicated harvests for replicated treatments. Clayton, NC, 2018.

Marketable

Culls²

Virus³

 Cultigen

Hvsts. 1 – 4  

Hvsts. 5 – 9 

Hvsts. 10- 13 

Hvsts. 1 – 4  

Hvsts. 5 – 9 

Hvsts. 10- 13 

Hvsts. 1 – 4  

Hvsts. 5 – 9 

Hvsts. 10-13 

Cash Machine 65 94 74 35 6 26 0 0 0
Green Machine 64 89 70 36 11 30 0 0 0
Ladoga 89 94 78 11 6 22 0 0 0
Leopard 86 98 87 14 2 13 0 0 0
Payload 84 86 71 16 14 29 0 0 0
Sanabria 81 97 67 19 3 33 0 0 0
Spineless King 79 89 72 21 11 28 0 0 0
Zucchini Elite 69 90 54 31 10 46 0 0 0
Bejo 3251 78 94 82 22 6 18 0 0 0
SV6009YG 90 95 76 10 5 24 0 0 0
SV0914YG 93 96 83 7 4 17 0 0 0
SV9043YG 81 87 82 19 13 18 0 0 0
SV9494YG 89 93 76 11 7 24 0 0 0
SVYG5395 81 97 86 19 3 14 0 0 0
SVYG6633 73 77 58 27 23 42 0 0 0
Average 80 92 74 20 8 26 0 0 0
LSD (0.05) 12 6 16 12 6 16 0 0 0

1 Total of 13 harvests. Planting was 4 May 2018. Harvests 1-4 occurred on 4, 6, 8 and 11 June; Harvests 5-9 occurred on 13, 15, 18, 20 and 22 June;   Harvests 10-13 occurred on 25, 27, 29 and 2 July 2018.
2 Culls consisted of primarily misshaped fruit.
3 Fruit were discolored or rough/disfigured due to virus.

Table 10. Zucchini Squash cultigen study – Percent plant stand count and average fruit length and width among replicated treatments. Clayton, NC, 2018.

Fruit Size (cm)

 Cultigen

 % Stand¹

 Avg. Length

Avg. Width

Cash Machine 100 21 5
Green Machine 100 19 5
Ladoga 100 19 5
Leopard 100 19 5
Payload 100 20 5
Sanabria 100 19 5
Spineless King 100 20 5
Zucchini Elite 100 20 5
Bejo 3251 100 19 5
SV6009YG 100 19 5
SV0914YG 100 19 5
SV9043YG 100 19 5
SV9494YG 100 20 5
SVYG5395 100 18 5
SVYG6633 100 18 5
Average 19 5
LSD (0.05) 2 0

1 Final plant stand count was taken on 25 June 2018.

Table 11. Zucchini Squash cultigen study – Plant growth quality data. Clayton, NC, 2018.

 Cultigen

 Canopy1

 Color

 Spine

 Vigor

Cash Machine 7 8 5 5
Green Machine 7 8 6 7
Ladoga 8 8 5 7
Leopard 6 8 7 7
Payload 7 8 5 6
Sanabria 8 7 5 7
Spineless King 9 8 1 9
Zucchini Elite 7 7 6 8
Bejo 3251 5 7 6 7
SV6009YG 5 8 5 8
SV0914YG 3 8 6 6
SV9043YG 6 8 6 8
SV9494YG 7 8 5 8
SVYG5395 5 6 6 5
SVYG6633 7 8 2 7
Average 6 7 5 7
LSD (0.05) 2 1 2 2

1 Canopy ratings are on a scale of 1-10; 1 = open, 10 = dense.
2 Color ratings are for plant foliage on a scale of 1-10; 1 =  pale green , 10 = dark green.
3 Color ratings are for plant foliage on a scale of 1-10; 1 = no spines, 10 = coarse spines.
4 Color ratings are for plant foliage on a scale of 1-10; 1 = smaller plants, 10 = robust plants.