30 Dec 16 Michael (New Zealand - temperate climate)
Hi there, we have had beetroot growing for about three years now and had very good crops. This year however, we applied compost very heavily & the bulb is not very big & in some cases not at all. What have we done wrong?
If the compost wasn't completely broken down it would take N from the soil to break it down. Very little left for the beetroot. On the other hand heaps of good compost and soil could be too rich. What I try and do is when mixing in compost etc - do it 4 weeks before planting anything. Turn the soil over several times and wet it to mix it all up and help break it down. Don't have too rich a soil to start with - you can add fert as they grow depending on how they are doing. I use inorganic fert - 2-4 teaspoons to 9 L of water in a watering can.
13 Jan 17 Jean Beardsall (New Zealand - temperate climate)
I could hazard a guess that your compost contained too much nitrogen. Anything with bulbs or roots doesnt respons well to nitrogen. Maybe add a little lime to bring it to the correct PH. Google says: Beetroot prefer a soil pH of 5.8-7.0 but can tolerate a pH of up to 7.6. Acid soils are likely to create nutrient deficiency problems and should be avoided or limed to raise the pH.
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