Price and planting method of Purple Potato Seedling

Purple potato, also known as black potato, vetch potato, etc., is a winding vine of the sweet potato family, and its meat is purple to dark purple. In addition to the nutrients of ordinary sweet potatoes, it is also rich in selenium and anthocyanin. it has special functions such as defecation and detoxification, cancer prevention and anti-cancer, anti-aging, weight loss and so on. Let's take a look at the purple potato seedling price and planting method.

How much is a purple potato seedling?

The price of purple potato seedlings is about 0.1-0.15 yuan per plant, but it varies according to variety, quality, producing area and market. The planting time of purple potato is generally when the temperature reaches about 15 degrees in mid-February, make a seedbed before raising seedlings, put the seeds horizontally on the seedling bed, the row spacing is about 5 centimeters, cover with fine soil, spray the soil with sprayer, cover the mulch, moisturize and keep warm, and when the buds grow to more than 20 centimeters, they can be cut and inserted into the field.

What kinds of purple potatoes do you have?

1. Xu Zishu No. 1: it is a new variety with high yield and purple meat, red skin and purple heart, and good taste. The density per mu is about 3300 plants, and the yield of fresh potato is more than 2000 kg per mu. It is suitable to be planted in the north of China and most areas of the middle and lower reaches of the Yangtze River.

2. Zhe Zishu No. 1: good sprouting, vigorous growth at seedling stage, long stem vines, heart-shaped leaves with teeth, green leaves, concentrated tubers, more number, average number of tubers per plant, average weight per plant 106.1 grams, average yield of fresh potatoes per mu 2148.7 kg.

3. Guang Zishu No. 1: top leaf color margin purple, leaf shape light complex, leaf vein purple, stem green with purple, plant shape semi-erect, potato piece purple red skin, purple color meat, good storability, good sprouting, medium resistance to potato blast, the average yield of fresh potato is 2375.0 kg per mu.

4. Jingshu No. 6: Brazilian sweet potato is crossed with Chinese sweet potato with long stem, purple skin and meat, high sweetness and good quality. it has a yield of 1500-2000 kg per mu and high drying rate, which is mainly used for deep processing and pigment extraction.

5. Japanese Ling Zi: a new variety of black potato introduced from Japan, with long spindles, purple-red skin, purple-black flesh, nearly black after ripening, strong disease resistance and storage tolerance, drought resistance and barren tolerance, strong adaptability, yield of 3000 kg per mu of spring potato and 2000 kg of summer potato per mu.

Planting methods of Purple Potato

1. Variety selection: purple potato can be divided into fresh type and processing type according to its use. the varieties of fresh type with good taste, moderate pigment content, good disease resistance and beautiful potato type are selected, and the varieties of processing type with high pigment, good disease resistance and high dry rate are selected.

2. seedling selection: purple potato can come out of the cellar to raise seedlings when the temperature reaches about 15 degrees in mid-February, make a seedling bed, put the seeds horizontally on the seedling bed, cover with fine soil and plastic film, and cut them into the field when the seedlings grow to more than 20 centimeters.

3, apply sufficient base fertilizer: purple potato planting should apply sufficient base fertilizer, generally apply 40-50 piculs of high-quality organic fertilizer, 35-50 kg of nitrogen, phosphorus, potassium and compound fertilizer, sprinkle all organic fertilizer before ploughing, and use compound fertilizer as core fertilizer when ridging.

4. Intermediate ploughing management: after ridging, purple potato should be treated with herbicide once to prevent the growth of weeds, ploughing for 2 to 3 times, combined with soil cultivation to help ridge, afraid of waterlogging, and timely drought resistance if conditions are available when the drought is serious.

5. Timely Titian: purple potato vines have strong growth, and there are more adventitious roots at internodes. Titian is the key to improve the yield of purple sweet potato, do not disrupt the direction, but do not turn the vine, disrupt the nutrient transport, generally reduce the yield by 30%.

6. Harvest and storage: purple potato should be harvested in the middle and late October, fresh purple sweet potato should be harvested before frosting, ventilation and humidity should be paid attention to in the early stage of storage, and heat preservation and moisture preservation should be paid attention to in the later stage.

Disease and insect Control of Purple Potato

1. Black spot

[symptoms] most of the disease spots occur on the wound, showing black to brown, round or irregular shape, with a slight concave in the center.

[control] 50% carbendazim wettable powder 1000 times soaked seeds for 10 minutes, or 50% carbendazim 500% 700 soaked seedlings.

2. Soft rot

[symptoms] the diseased potato is soft and rotten, watery, farmers call it "rotten", and the potato meat is yellowish white and gives off a fragrant wine smell.

[prevention and treatment] soak the potato pieces with 50% 70% methyl thiophanate wettable powder 500% 700 times for 1 time and 2 times, and the effect is good.

3. Root rot

[symptoms] the roots were infected to form black-brown spots, the leaves were wilted, and the potato lumps were infected to form deformed potatoes.

[prevention and treatment] 50% methyl topiramate wettable powder was sprayed twice with 700-1000 times liquid, and the effect was good.

4. Baby elephant armour

[harm] adults gnaw on young buds, stem vines and petiole cortex and bite root tubers, which seriously affect yield.

[prevention and control] in the early stage, the potato head can be drenched with farmland and water, or sprayed with a mixture of 600 times trichlorfon plus kung fu.