Potatoes - Maincrops
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Family | Solanaceae
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| Rotation | 1 in 4
last field before Lime
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| Soil suitability | pH 5 - 5.5
Brown earths
stone free
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| varieties | Golden wonders
roosters
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| seed bed prep | deep plough 22cm
till
remove stones
make ridges
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| Time of sowing | March
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| seeding rate | 40000 - 60000 seeds / Ha or 5 ton / ha
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| method | potato planter
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| fertiliser | N:P:K
150:150:300 Kg / Ha
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| too much nitrogen | delays maturity
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| 2 x pests | eelworms
aphids
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| 2 x diseases | Blight (fungus)
blackleg (Bacteria)
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| harvesting - time | Oct onwards
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| harvesting - method | elevator digger
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| Yield | 30 - 40 ton / ha
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| sprouting | expose potatoes to light to produce sprouts
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| too much potassium | reduces dry matter
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| phosphorous | increase DM
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| where is certified seed produced | Donegal
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| why is certified seed produced in Donegal | wet and windy weather keeps aphid population low --> these are "vectors" for disease
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| What is earthing - up? | Increasing the amount of soil around the stalks to prevent sunlight reaching the tubers to prevent greening
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| why, and when, do you burn off the haulms | 2-3 weeks before harvesting to make harvesting easier and toughen up the skins
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| leaf roll diease | viral disease
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| scab | damages the potato skin caused by a high pH
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| what is greening of the tubers? | sunlight cuases alkaloids in the potato to form this can be toxic if consumed at high levels
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Created by:
msbrowne
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