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English Agriculture News

Hot in the Garden: Too Much Sun Can Be Bad for Vegetables

Website: VOAnews.com

Source: YouTube

Title: Hot in the Garden: Too Much Sun Can Be Bad for Vegetables

Description: This is a VOA Special English Agriculture Report.
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Text:
Last week we discussed how to grow vegetables in partial sun. This week we learn how to protect vegetables from too much sun. Curtis Swift is an extension agent at Colorado State University. He says shading plants from intense sunlight in hot weather can increase production. Tomatoes, peppers, eggplants, and okra and other members of that family drop flower buds and young fruit when the plant temperatures exceed thirty-two degrees Celsius.Plants can get sunburn. Yellow spots may appear on their leaves and fruit. These areas can become thin and white as plant tissue is affected.Curtis Swift says shade can help correct these problems. "What it does is, it actually allows the plant to give off adequate water, which cools the tissue."He suggests shading plants with bed sheets, shade cloth or brush -- in other words, sticks and branches. Cut them about a meter long and stand them in the ground on the south and west sides of plants. "Anything you can put over the plant. A lot of people can cut brush at the edge of the field and stick that into the soil on the south and west side of the plant and provide some shade." Curtis Swift says if you use cloth sheeting, suspend it at least five centimeters above the plants. That way there is enough space for bees to fly around. Be careful not to cover plants too closely, which could trap heat and defeat the purpose of shading. People can also buy canopies to shelter their plants. Some canopies have narrow strips of metal or wood to provide either sunlight or shade, depending on the position of the sun. Curtis Swift says shading works with field crops as well as vine crops like squash. People sometimes plant shrubs or trees to shade their vegetables. But he says tree roots compete with the vegetable roots. The veggies may not get enough nutrients and water. Now, here are a few comments on last week's report about shade growing. Ko from South Korea wrote: I can't imagine plants in the shade for most of day without sunshine! That's a really creative idea. Andy in Chile wrote: This is an interesting article. But you forget that the shadow allows the growth of the fungi. And Slava in Croatia recalled: Once I grew small tomatoes on a balcony under a roof. Sun shone there only in the afternoon. In October the plants had only a few green tomatoes. I took them inside behind the window and they had ripe fruits on Christmas and the entire winter. For VOA Special English, I'm Carolyn Presutti.

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