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This is not a disease, it is a physiological disorder, which farmers know by the name of onion flower or pipe formation etc. This problem is often seen in the onion in the 4-5 leaf stage.
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In this disease, onion leaves turn yellow and dry from the top and flowers start forming on the leaves, due to which the yield is affected along with the size of onion bulbs.
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Possible reasons – deficiency and excess of nitrogen in the crop, excessive irrigation, not selecting the variety according to the season, lack of nutrients in the soil, delay in transplanting, moisture in the atmosphere etc.
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Remedy – Use the right amount of nitrogen and nutrients at the right time. Keep in mind that do not use urea while making bulbs.
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Avoid excessive irrigation and choose only good quality variety according to the sowing season.
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Onion seedlings are ready for transplanting in 30-45 days, delay in transplanting also increases the chances of this disease.
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When you see flowers in the crop, pluck it. It is necessary to do this otherwise the tubers do not get enough nutrition and the tubers remain small.
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