The Latest Cultivation Techniques and Planting Methods Tutorial for Pattypan Squash

Pattypan squash is a rare ornamental-and-edible garden plant, also known as disk squash, saucer squash, scallop squash, and flattened round zucchini, among other names. It is a variety of Cucurbita pepo in the gourd family Cucurbitaceae, and its fruit can be both ornamental and edible. Its cultivation history in China is very short, having been introduced from Russia, South Korea, the United States and other places. Now let us take a look at pattypan squash cultivation techniques!

Growth Habits of Pattypan Squash

Pattypan squash prefers a warm environment, with a suitable growing temperature of 13-28°C. If the temperature is too high, the fruit is prone to aborting; if the temperature is below 10°C, growth stagnates and the fruit does not swell. It likes light but can tolerate a certain degree of weak light, so it is suitable for both open-field cultivation and protected cultivation. It likes moisture and is not drought-tolerant. Because its leaves are large and transpiration is strong, special attention must be paid to water management in cultivation. The air humidity should be kept at 70-80%; excessive humidity makes it prone to powdery mildew. It likes fertilizer and is best cultivated in sandy loam or loam, with a suitable soil pH of 6.5-7.0.

Seedling Techniques for Pattypan Squash

1. Germination and sowing: Pattypan squash is raised in paper tubes or nutrient pots. Select plump seeds free of disease and insect damage and soak them at 28-30°C for 8-10 hours, then germinate them at 25-28°C. During germination, keep the germination bag moist and change the water 1-2 times a day. When more than 50% of the seeds have sprouted, sow them in a pre-prepared sowing tray, with a bottom soil thickness of at least 5 cm.

2. Mulching with plastic film: After sowing pattypan squash, cover with plastic film or a small arch tunnel to keep warm and moist. It is best to maintain the soil temperature above 25°C, which helps the seedlings emerge. After the seedlings emerge, remove the covering and lower the temperature appropriately to prevent leggy growth. After the cotyledons have flattened out, transplant the seedlings into seedling pots (10*10 cm).

3. Seedling-stage management: During the seedling stage, pattypan squash must receive sufficient light, maintaining about 10 hours of light per day, which is beneficial for female flower differentiation. Use variable-temperature management: on sunny days keep it at 23-28°C during the day and lower it to 12-15°C at night; on cloudy days keep it at 20-25°C during the day and lower it to 10-12°C at night, with a day-night temperature difference of 10-15°C. Harden the seedlings 5-7 days before transplanting.

Cultivation Techniques for Pattypan Squash

1. Land preparation and transplanting: After the frost period, transplant when the minimum temperature stably exceeds 10°C. Use flat beds or ridge planting. For flat beds, the bed spacing is 40-50 cm, the bed width is 120 cm, and the plant spacing is 80-100 cm, with 2 rows per bed. For ridge planting, the ridge spacing is 70 cm and the plant spacing is 100 cm. The plant and row spacing can be determined specifically according to the characteristics of the variety. Prepare the land before transplanting, applying 4000-5000 kg of decomposed organic fertilizer, 30 kg of diammonium phosphate, and 50-100 kg of superphosphate per mu.

2. Fertilizer and water management: After transplanting and seedling recovery, water once together with topdressing to promote vine growth, and increase the water supply during the flowering and fruiting period. During periods of sustained strong light and high temperature in midsummer, water twice a day if necessary. During the growing period, apply topdressing three times: after seedling recovery, at full bloom, and at full fruit set. Avoid weed infestation. Before flowering, hoe and loosen the soil 2-3 times and cultivate to remove weeds to promote root development.

3. Vine tying and disease prevention: Pattypan squash should be tied to supports in time, and old and diseased leaves removed. Manual pollination can be carried out from 6-9 a.m. to help fruit set. At the same time, pay attention to pest and disease control. A 2000-3000 times dilution of 20% fenvalerate emulsifiable concentrate can be sprayed on the leaves to control aphids, a 2000 times dilution of 25% buprofezin wettable powder can control whiteflies, and a 2000-2500 times dilution of 25% triadimefon wettable powder can be selected to control powdery mildew.

Container Cultivation Techniques for Pattypan Squash

1. Seedling raising and transplanting: For container cultivation of pattypan squash, transplant once the plant has unfolded 1-2 true leaves. The planting pot should have a top diameter of 40-50 cm and be filled with nutrient soil. The nutrient soil formula is: field soil : decomposed livestock and poultry manure : sawdust (or decomposed horse manure) = 7:2:1. Plant 1 pattypan squash per pot, set up 1 support stake 1 m tall and 2-3 cm thick, and water thoroughly after transplanting.

2. Growing management: During the growing period, keep the soil moist for pattypan squash. Because pattypan squash is a light-loving plant, place the pot in a well-ventilated place with ample light. For dwarf types, keep 2-3 fruits per plant; for vining types, keep 3-5 fruits per plant. Keep the soil moist, and tie the vine once each time the plant extends 20 cm. During the growing period, mainly prevent the occurrence of aphids and powdery mildew. Pick the fruit after it is fully ripe.