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Growing Sweet Potato, also Kumara

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10 Jul 18 Cathy (Australia - temperate climate)
When my tomato bed finished i refilled the bed with conpost and the sweet potatos started growing. I got quite a few potatoes and pulled them out in September to replant tomatoes. I couldnt get tomatoes to grow that summer so i gave up and let the je sweet potatoes come back naturally. Should i try for tomatoes again in that same bed? If so do i need to help the soil in any way? Thanks!!
13 Jul 18 Mike L (Australia - temperate climate)
I have been told sweet potatoes are a big consumer of nutrients from the soil - other words not much nutrient left in the soil after the crop Tomatoes would also take a lot from the soil. Did you add compost or totally refilled the bed with compost again. If the compost is not totally broken down then it will take N from the soil - therefore very little N for the intended crop. Look to the guide here for planting - although it has no planting time for sweet potatoes in temperate climates. After each crop you need to do one of two things - add completed compost, manures etc and make sure this is all broken down into the soil. Or you hit it up with some all round fertiliser. Also give your soil a rest for a few months and add compost and turn it in.
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