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Feb
28
HARVEST & PRESERVATION OF RED PURPLE ONION
Thursday, February 28, 2019

HARVEST & PRESERVATION OF RED PURPLE ONION

 

Onions are vegetable food group, it used widely for processing food in our daily lives.


TYPE OF RED PURPLE ONION  
There are two types: Big round tubers and small long tubers.


HARVEST RED PURPLE ONION 


Most varieties have the time of 60 -65 days. When planting choose the old bulbs (tubers stop growing) have dark purple. Of varieties for commercial production to 60 -90 kg / 1000 m2, planted to keep the same 300-400 kg / 1,000 m2. Seasonality: In Soc Trang keep the same crop in months May-June, planting season-salable in October - November - December, in Khanh hoa harvest months December - January – February ; in Ben Tre often plant on middle of October to November and harvest on December to January.

PRESERVATION OF RED PURPLE ONION  ( Hinh 3)

After 55 - 60 days from grow date, the onion tubers have red color, the leaves have fallen 80%, began to spit, dried in sun  2 - 3 days for soft leaf for easy transport distance. Should be harvested only on dry days. Pulling tubers to shake off the land into your cart and moved to storage, avoid causing scratches or break out will affect the period of storage.

 STORAGE: Exposure to the sun 10 - 15 days, the straw was cleaning, pest must be clean, pile height of 1-5 m, a single layer covered with a layer of straw, or hanging whole bunch in a well-ventilated place or stored chemicals by chilled 40kg flour mixture Tale + Sevin + Rovral / 1 ton of onions.

 



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