Preserving potatoes with dry sand

The method of preserving potatoes with dry sand is very effective. After 5-month storage, tubers are not sprouted, not shrunken due to dehydration, loss rate is below 10%. Simple preservation process, suitable for household size.

Prepare supplies and chemical treatment

Preserving potatoes with sand needs to use some chemicals to treat germination, antifungal, bacteria eradication such as MH, VBC, CBZ (Carbendazim), EM. The amount used to treat preservation of 1 ton of potatoes: 200 g CBZ, 100 g MH, 3 liters of EM preparations, 2 blocks (m ³ ) of sand.

Handling before harvest

Before harvesting 2-3 weeks, spraying mixture of MH 0.2% and VBC 0.2% into potato field. Spray in the early morning or late afternoon, spray wet leaves, spray about 30 liters / Northern pole. The use of these chemicals is intended to inhibit potato germination and to kill pathogens before harvest and storage.

Harvesting and transportation

Choose a sunny day to harvest. Harvesting potatoes must be gentle, avoiding the maximum of mechanical effects causing tuber scratches.

After unloading, it is necessary to put potatoes into baskets, baskets, baskets to transport, not to pour from one basket to another easily scratched. Do not contain potatoes and transport potatoes in sacks.

Treatment of tuber recovery

Potatoes have the ability to recover scratched tissue after 1-2 months of harvest. After harvesting, the potato stalks on a dry tile floor are 30 -40 cm thick, top covered with a dry layer of 40-50 cm, maintained for 3 weeks. Note the treatment of tuber recovery should be carried out in a ventilated house but not in the wind to avoid dehydration.

Antifungal treatment and anti-germination for tubers

Put potatoes into a layer of 10 - 15 cm thick, mix Carbendazim 0.2% and MH 0.2%, use the wet spray pump. The treatment can also be done by adding potatoes to a net bag (or basket), soaking in Carbendazim 0.2% and MH 0.2% solution for 5 minutes, then drying the tubers. Potatoes need to dry naturally and continue to handle the following stages.

Handling sand

Using dry sand in preserving potatoes is to reduce the evaporation of potatoes, avoid contamination by spoilage between potatoes and create a microclimate environment with high CO ₂ levels around each potato to reduce Respiratory intensity of tubers.

Sand used to incubate potatoes should be washed, dried. Then spray the secondary EM solution (mixed for direct injection) into the sand block to wet thoroughly, keep 24 hours to kill harmful microorganisms, clean sand. After EM treatment, dry sand to preserve preserved potatoes.

Making sand

The annealed house has a dry and airy brick floor. Before putting the potatoes in storage, it is necessary to cover the substrate with cork or nylon to avoid moisture absorption in the background. Spread a layer of tubers about 20 cm, then pour a sufficient amount of sand to cover all the potatoes, then a layer of tubers, a layer of sand next. The compost can be 1.5 m high, the top layer is covered with roots. To prevent potatoes from being exposed to light during storage, cover one layer of dark colored cardboard or plastic on the block.

Preservation and inspection

During storage, periodically check the potatoes once every 2 months, remove rotten tubers, treat germ (if any). If there is a lot of rotten potatoes, remove the rotten, wet sand and reprocess the potatoes, clean the sand again for preservation.

After 5 months of storage, all chemicals used to treat were decomposed and residues were below the allowed level.