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Thu, Aug 4, 11 at 10:33
| i tried watermelons this year, Sugar Baby variety. the leaves started a beautiful green but lately have faded to a lime green with brown spots and something that looks like a white chalk on the leaves. the melons are still a beautiful dark green and they are unblemished. what is wrong with the leaves and does it affect the fruit at all? thanks everyone! |
Image link: watermelons, okay to eat? (12 k)
Follow-Up Postings:
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- Posted by dan_staley 5b/SS 2b AHS 6-7 (My Page) on Thu, Aug 4, 11 at 11:25
| From poor resolution foto, looks like nutrient deficiency. Impossible to tell how it will affect flavor. Dan |
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| well then how do i get the picture better? i had to resize them this small to even post them to this page. how can i get them better? |
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| "White chalk" suggests powdery mildew. Very common on squash & melon. |
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- Posted by tsugajunkie z5 SE WI (My Page) on Thu, Aug 4, 11 at 18:13
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| The white powdery stuff does look like Powdery Mildew, common on many plants when the weather turns hot and humid. Easily controlled by sprays of 1 teaspoon baking soda in 1 quart of water, or a 50/50 mixture of fat free milk and water applied every 5 to 7 days. The light green leaves may indicate a nutrient deficiency, a lack of soil moisture (which creates a nutrient deficiency), or maybe a too wet soil which does the same thing as not enough soil moisture. The brown spots could be from insect activity. Numerous insects can cause them. |
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| White chalk could be anything. Molting leaves can cause a white forum to spread like a virus through your plants, but is just discolouration and no real harm, though I've made the mistake and jumped to conclusions that I had powdery mildew because of it. Interesting, despite treating for powdery mildew, I still got the real thing on my pumpkins, but perhaps I didn't keep spraying long enough with cornell's solution. There are quite a few diseases that cause brown rusty spots, but I can't quite all the details now. So far my Sugar Babys have been growing well this year, though I did start quite late. |
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