Yellow Squash and Zucchini Cultivar Evaluation in Georgia

Abstract

<jats:p>Ten yellow squash (<jats:italic>Cucurbita pepo</jats:italic>) and nine zucchini (<jats:italic>C. pepo</jats:italic>) cultivars were evaluated in southwest Georgia during spring and fall growing seasons in 2014 and 2015. Plants were grown using plastic mulch and drip irrigation following standard production practices for squash in Georgia. Plants were harvested 10 to 13 times during each study season. Fruit were graded into fancy, medium, and culls. Virus pressure was low during the trials. For yellow squash yields, there were significant cultivar by season interactions; however, Solstice, a straightneck yellow squash, and Gentry, a crookneck cultivar, were consistently among the highest yielding yellow types. Despite having no documented virus resistance, ‘Gentry’ performed well during the fall season. However, ‘Precious II’, a yellow straightneck cultivar with the presence of the precocious yellow gene, experienced high cull rates in the fall due to virus effects on the fruit. There was a year by season by cultivar interaction for zucchini yield. Despite this interaction, ‘Respect’ was ranked among the highest yielding cultivars in all four seasons of the trial. Differences were also observed between seasons for yellow and zucchini squash, with fall yields generally being lower than those in the spring. The results of this study suggest significant differences in the adaptability of squash cultivars for spring and fall production in Georgia. In addition, virus resistance, while important, should not be the exclusive factor for determining cultivars for fall-planted squash in Georgia.</jats:p>

Comparative Performance of Sugarcane Bagasse and Black Polyethylene as Mulch for Squash (Cucurbita pepo L.) Production

“…9, No. 11;2017 Although the 2015 and 2016 minimum, maximum, and average air temperatures were equivalent across years, which resulted in similar CGDD and DADD values (Table 1), the mulching treatments significantly impacted the minimum, maximum, and average soil temperatures at 2.54 cm depth ( Table 2). The differences in soil temperatures, therefore, significantly influenced CGDD and DADD among mulching treatments (Table 2).…”

“…GDD were calculated using a base temperature (T base ) of 8 °C for squash (Coolong, 2017;Maynard & Hochmuth, 2007;NeSmith & Hoogenboom, 1994;Yousef et al, 2013) and a daily maximum temperature (T max ) of 32 °C (Coolong, 2017;NeSmith, 1997;NeSmith & Hoogenboom, 1994;Yousef et al, 2013). The daily minimum temperature (T min ) was used for all calculations.…”

Combining Cultural Tactics and Insecticides for the Management of the Sweetpotato Whitefly, Bemisia tabaci MEAM1, and Viruses in Yellow Squash

“…Southeastern states, including Georgia and Florida, are among the top producers of fresh market yellow and zucchini squash (Cucurbita pepo L.) in the United States, with a market valued at USD 37.6 million in 2019 [1]. The majority of Georgia's yellow and zucchini squash (hereafter referred to as squash) are grown in the fall season, during Horticulturae 2022, 8, 341 2 of 19 which pressure from pests and pathogens is typically higher than in the spring [2][3][4]. The sweetpotato whitefly, Bemisia tabaci Gennadius MEAM1 (Hemiptera: Aleyrodidae), is arguably one of the most important pests of squash.…”

“…This can result in the establishment of vector reservoirs and virus inoculum sources once infected seedlings are transplanted into the field [29][30][31][32][33]. Resistant crop varieties offer the best protection against whiteflies and viruses, but there are no commercially available squash varieties with resistance to whiteflies and/or CuLCrV and CYSDV [3,34,35]. Insecticide use, often multiple applications per week, is the norm for whitefly and virus management, indirectly [35,36].…”

Важливі Кореляційні Взаємозалежності Між Комплексом Господарсько-Цінних Ознак Гібридів F1 Кабачка В Аспекті Їх Адаптивного Потенціалу

“…Основною перевагою кабачка, як гарбузової овочевої рослини є скоростиглість, висока врожайність та холодостійкість. Серед усіх сортотипів даної овочевої рослини особливою популярністю на ринку користуються кабачкицукіні (Teresa A. L. & Harry S., 2016;Coolong, T., 2017). Цей сортотип вирізняється довгастою формою плода з жовтим, зеленим або темнозеленим забарвленням шкірки.…”