When rise pumpkins ( Cucurbita maxima diverseness ) in the family garden , the sight of yellowing leave can collide gardeners used to enjoying sprawling immature foliage and deep orange fruit on these annual vines . Yellowing leaves signal something amiss with your pumpkin harvest , and can be because of several dissimilar factors . quick action and the right diagnosing can help you limit damage to your pumpkin and get your harvest back on track .
Step 1
Appropriate care for your pumpkin vines is all important to a dear craw and greenish leave . Healthy autumn pumpkin have a greater likelihood of avoiding and recovering from pestilence and disease issues that feign these well - hump squash . Grow pumpkin vines in areas that provide full sunlight for best development . Maintain moist , well - drained soil with pH levels between 6.2 and 6.5 for best growth . Pumpkins need irrigation , though overhead watering can put up to problems with fungal disease . Water stain instantly through method like drip irrigation . Irrigate to a depth of 6 inch for moist , but not saturated , dirt .
Step 2
Balancing Nutrition
When care is under control , nourishing deficiency may be behind yellow-bellied pumpkin leaves . Even when compost is generously mixed in the garden before planting , pumpkins often require surplus atomic number 7 . Incorporate compost or a 5 - 10 - 10 granulose fertilizer at implant at a rate of 1 to 2 tablespoon per flora . One week after autumn pumpkin blossom , add a high - N plant food such as 33 - 0 - 0 ammonium ion nitrate at the rate of 1 tablespoonful per plant . Repeat that covering again in three weeks . wear down gloves and safety goggles when working with chemicals , and water the area well after your coating . A soil test helps confirm any other potential nutrient problems .
Managing Mildew
Powdery mildew is a common pumpkin disease have by fungous infection . During tender weather , powdery mold starts with yellow leaf stain that grow into yellow , dying leave . A powderlike foggy growth also develops on foliage , as the name suggests . To keep powdery mildew on pumpkins , keep the area surround your pumpkin complimentary of weeds , and head off overhead irrigation . H2O in the mornings , so leaves dry by fall . Never work with your pumpkins when leaf is wet , and keep all equipment sterilized with household germicide to prevent disease bed covering . If mildew is severe , apply a quick - to - use horticultural oil spray to control further spread . Never use oils on drouth - stressed pumpkin or with temperatures above 90 degrees Fahrenheit .
Beating Borers
Squash vine borers attack pumpkins with the potency for severe damage . Wreaking havoc as emollient - imbue , brown - headed larvae measure around 1 inch in length , these pests bore into pumpkin vines . tedious suppress the water and nutrient dispersion throughout the plant , conduct to wilt , yellowed farewell and plant expiry . Prevention and interposition are primal to control . Cover Cucurbita pepo plant with row screen as presently as you mark squelch rock drill bodily process . If you ’ve had past problems , do it right after planting . Destroy all affect vine and plant and dispose of the septic junk . flora pumpkins in different areas each yr . A ready - to - use painted daisy atomiser can help control damage . sprayer exit thoroughly so the cuss reach out to the spray .
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