KR102534228B1 - Method for cultivating sweet potato by using composition for sweet potato - Google Patents

Abstract

The present invention relates to a method for cultivating sweet potatoes using a composition for cultivating sweet potatoes, which improves the sweetness and size uniformity of sweet potatoes and prevents the occurrence of diseases. The method for cultivating sweet potatoes includes the steps of: mixing soybean flour, pearl powder, urea, and coconut inner bark powder; grinding the mixture; sprinkling the powder and maintaining the powder for 2 to 3 months; and planting sweet potatoes.

Description

Sweet potato cultivation method using a composition for sweet potato cultivation {METHOD FOR CULTIVATING SWEET POTATO BY USING COMPOSITION FOR SWEET POTATO}

The present invention relates to a sweet potato cultivation method capable of improving the sugar content of sweet potatoes and preventing the occurrence of diseases during cultivation.

Sweet potato is a food ingredient widely consumed as a diet food or snack, and is recognized as an ingredient that does not fall out as a diet food.

Depending on the taste or color, various types such as pumpkin sweet potato, chestnut sweet potato, carrot sweet potato, purple sweet potato, etc. are widely consumed, and the main component is carbohydrate, which is mostly included in sweet potatoes in the form of starch. It is rich in vitamins, niacin, and fiber, and has a lower glycemic index than potatoes, so it is widely used in diet therapy using a glycemic index.

Both the stem and root parts of the sweet potato can be consumed. The stem part of the sweet potato is mixed with vegetables and used as a side dish, and the root part of the sweet potato is formed in the form of a tuberous root, and is eaten steamed, baked, or eaten raw.

During cultivation, excessive fertilizer should not be supplied, and it is a crop that grows well even in non-fertile land. After planting, it can be grown by managing the field and supplying water or some nutrients.

On the other hand, sweet potato has a sweet taste but does not have a high glycemic index, so it is often consumed as a snack, and it is a universal snack that is baked and sold as a street snack in winter.

Recently, various methods have been developed to realize high sugar content due to species improvement or improvement of cultivation environment. Items may be increased according to size.

Sweet potatoes are prone to edema due to suppression of transpiration in a humid environment, and there are problems such as yellowing of leaves of plants or formation of black marks. There is a problem that it is difficult to effectively prevent pests and diseases.

Korean Patent Registration No. 1987758 relates to a high-yield sweet potato cultivation device and a method for high-yield sweet potato cultivation using the same. Disclosed is a technology that allows you to dig easily without flaws and to produce a high yield of large and flawless sweet potatoes.

Korean Registered Patent No. 1707934 relates to a color-matching biodegradable mulching film for sweet potato cultivation. It is biodegradable without the need to collect it after use during sweet potato cultivation, so it is a technology that has the effect of reducing labor and incineration costs during sweet potato cultivation. are starting

However, the above technologies only disclose technologies for reducing labor force from a worker's point of view, facilitating cultivation and harvesting, and improving the quality of sweet potatoes through improving the appearance of sweet potatoes, forming soil suitable for cultivating sweet potatoes, and continuously improving soil quality. A technique for improving sugar content of sweet potato and preventing disease of sweet potato through improvement is not disclosed.

Therefore, it is necessary to develop a technology for forming soil suitable for cultivating sweet potatoes, improving sugar content of sweet potatoes through continuous improvement of soil quality, and preventing diseases of sweet potatoes.

Republic of Korea Patent No. 1987758 (2019.06.04) Republic of Korea Patent No. 1707934 (2017.02.13)

An object of the present invention is to provide a method for growing sweet potatoes in which sweet potato sweetness is further improved, variation in sweet potato taste is reduced within the same species, and sweet potato sizes are uniformly formed.

Another object of the present invention is to provide a sweet potato cultivation method that provides an environment in which sweet potatoes can be grown without destruction or deficiency of nutritional components.

The present invention provides a sweet potato cultivation method capable of preventing diseases of sweet potatoes by supplying the composition to the soil at regular intervals.

The sweet potato cultivation method according to the present invention for solving the above problems,

(a) mixing 100 parts by weight of soybean flour, 30 to 50 parts by weight of pearl powder, 5 to 7 parts by weight of urea, and 10 to 20 parts by weight of coconut endothelial powder, (b) mixing the composition of step (a) with -30 to - After quick freezing at a temperature of 20 ° C., pulverizing into powder of 100 to 200 mesh, (c) sprinkling the composition prepared in step (b) on the soil where sweet potatoes are to be grown, and then maintaining for 2 to 3 months and (d) planting sweet potatoes in the soil that has undergone step (c).

In the present invention, the soy flour may be roasted for 30 to 40 minutes at a temperature of 50 to 80 ° C.

In the present invention, (e) additionally supplying 200 to 300 g of the powder of step (b) per sweet potato seed for 4 months at intervals of 1 month to the soil where the sweet potato is planted.

In the present invention, (f) harvesting sweet potatoes after 1 to 2 months after step (e) and maturing for 14 days under an illumination condition of 0.2 lux or less may be further included.

In the present invention, the sweet potato may be one or more selected from the group consisting of Yulmi, Shinyulmi, Jungmi, Geonmi, Yeonmi, Jinheungmi, Shincheonmi, and Shingeonmi.

According to the present invention, the sugar content of sweet potatoes is further improved, the variation in taste of sweet potatoes within the same species is reduced, and the size of sweet potatoes can also be formed uniformly.

According to the present invention, it has the effect of preventing the occurrence of diseases of sweet potatoes.

Hereinafter, each configuration of the present invention will be described in more detail so that those skilled in the art can easily practice it, but this is only one example, and the scope of the present invention is Not limited.

“Preferred” or “preferably” as used herein refers to embodiments of the present invention that have particular advantages under particular conditions. However, other embodiments may also be preferred under the same or different conditions. Also, the presence of one or more preferred embodiments does not imply that other embodiments are not useful, nor does it exclude other embodiments from being within the scope of the present invention.

As used herein, the term "comprising" is used when listing materials, compositions, devices, and methods useful in the present invention and is not limited to the examples listed.

Sweet potato cultivation method according to the present invention, (a) mixing 100 parts by weight of soybean flour, 30 to 50 parts by weight of pearl powder, 5 to 7 parts by weight of urea, and 10 to 20 parts by weight of coconut endothelial powder, (b) the above (a ) After rapidly freezing the composition in step at a temperature of -30 to -20 ° C, pulverizing the composition into 100 to 200 mesh powder, (c) sprinkling the composition prepared in step (b) on the soil where sweet potatoes will be grown and (d) planting sweet potatoes in the soil that has undergone step (c).

Step (a) is a process of preparing a composition for cultivating sweet potatoes, and 100 parts by weight of soybean flour, 30 to 50 parts by weight of pearl powder, 5 to 7 parts by weight of urea, and 10 to 20 parts by weight of coconut endothelial powder are mixed in a batch.

It is preferable to use the soy flour roasted for 30 to 40 minutes at a temperature of 50 to 80 ° C., to prevent unnecessary volume expansion during quick freezing in the next step by removing moisture, and to better mix with other ingredients This is to effectively prevent edema through moisture control.

When the pearl powder is added in excess of the above content, the cultivation cost increases due to the increase in manufacturing cost, resulting in a problem of poor economic efficiency, and when added in a smaller amount than the above content, the effect of preventing edema is insignificant. .

When the content of the element is added in excess of the content, the sugar content of sweet potato is rather lowered, and when added in a smaller amount than the content, the size of a specific root among sweet potato roots increases compared to other roots. there is

On the other hand, the coconut endothelial powder is intended to prevent pests and diseases in the soil and to maintain moisture at an appropriate level. When added in excess of the above content, the possibility of edema is increased, and when added in a smaller amount than the above content, , there is a problem that the prevention effect of edema is insignificant.

In the step (b), the mixed composition is rapidly frozen at a temperature of -30 to -20 ° C, and then pulverized into a powder of 100 to 200 mesh, in which moisture is removed during the quick freezing process and micropores are included. It can be formed into powder particles, and has the advantage of being easily penetrated into the interior by rainwater or the like even after being sprayed on the soil surface in the above powder degree range.

Step (c) is a step of spraying the composition prepared in step (b) on the soil where sweet potatoes are to be grown and then maintaining it for 2 to 3 months. Through this process, the composition sufficiently penetrates into the soil, and the sweet potato The composition can be spread to the location where the roots of the roots go down.

After maintaining for a longer period than the above period, since the right period of sweet potato cultivation is missed, it is difficult to optimize the sugar content of sweet potatoes.

The step (d) is a step of planting the sweet potato in the soil that has passed the step (c), and the planting method itself may refer to a generally well-known method.

An example will be described below, but this is only one example, and the content of the present invention is not limited thereto.

Vinyl mulching can be used as needed. Ridges are 20 to 25 cm high and 70 to 75 cm wide.

As for planting sweet potato seeds, various methods such as horizontal planting, improved horizontal planting, twisted planting, comb planting, bent planting, and upright planting can be used.

The sweet potato cultivation method according to the present invention may further include (e) additionally supplying 200 to 300 g of the powder of step (b) per sweet potato seed for 4 months at intervals of 1 month to the soil in which the sweet potato is planted.

Step (e) is a step of supplying additional nutrients to the soil in which sweet potatoes are planted, preventing the occurrence of diseases in the process of growing sweet potatoes, and continuously maintaining the process of improving sugar content and forming a uniform size .

If necessary, a step of harvesting sweet potatoes after 1 to 2 months after step (e) and aging for 14 days under an illumination condition of 0.2 lux or less may be further performed.

Through this process, some of the moisture of the harvested sweet potato is removed, making it possible to maintain and store it for a long time without being deformed.

In the present invention, the sweet potato may be one or more selected from the group consisting of Yulmi, Shinyulmi, Jungmi, Geonmi, Yeonmi, Jinheungmi, Shincheonmi, and Shingeonmi.

The present invention can be applied to sweet potatoes of various varieties in that it enables the harvest of sweet potatoes having a uniform and improved sugar content from sweet potatoes of the same variety.

Hereinafter, the present invention will be described in more detail based on examples.

<Example 1>

100 parts by weight of soybean flour (fried for 30 minutes at 70 ° C), 50 parts by weight of pearl powder, 5 parts by weight of urea, and 12 parts by weight of coconut endothelial powder were mixed, rapidly frozen at a temperature of about -30 ° C, and then made into a 150 mesh powder It was pulverized to prepare a composition for cultivating sweet potatoes. In mid-January, 1 kg of the powder is sprinkled in a circular area with a diameter of 20 cm centered on the planting position of each seed in the position where the sweet potato will be grown.

Separately, sweet potato seeds (Shin Yulmi) are grown and prepared in the house, the seeds are collected, and 10 sweet potato seeds are planted after black vinyl mulching at the location previously marked on the soil in mid-April.

I watered enough, managed the field to grow sweet potatoes, and harvested sweet potatoes around September.

<Example 2>

Cultivation in the same manner as in Example 1, except that after planting the sweet potato seeds, a process of additionally supplying 300 g of the sweet potato cultivation composition to the periphery of each seed was additionally performed for 4 months at 1 month intervals, It was cultivated in the same way as in Example 1.

<Example 3>

Cultivation was performed in the same manner as in Example 2, except that after harvesting the sweet potatoes, a process of aging for 14 days under an illumination condition of 0.2 lux was further performed, and cultivation was performed in the same manner as in Example 2.

<Comparative Example 1>

Cultivation was carried out in the same manner as in Example 1, but in the same manner as in Example 1, except that commercially available sweet potato fertilizer was supplied according to the method of use presented on the packaging of the fertilizer, instead of the composition for cultivating sweet potatoes in Example 1. cultivated.

<Comparative Example 2>

Cultivation was performed in the same manner as in Example 1, except that roasted soybean flour was not used and commercially available raw soybean flour was used.

<Comparative Example 3>

Cultivation was carried out in the same manner as in Example 1, except that the composition for cultivating sweet potatoes was not used.

<Evaluation of occurrence of edema>

During the cultivation process, after 2 months and 4 months from the date of planting the first sweet potato, the occurrence of edema of the sweet potato seeds was checked, and the number of generated seeds was listed in Table 1 below.

<Sugar content evaluation>

After roasting the harvested sweet potatoes using a sugar meter, sugar content was measured, and the average value was calculated and listed in Table 1 below.

<Evaluation of size uniformity>

The standard deviation value was calculated by measuring the length (vertical distance from one end to the other end in the longitudinal direction) of the total number of harvested sweet potatoes, which are shown in Table 1 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Edema occurrence evaluation
(number of occurrences / 10) 2 months passed 0 0 0 0 2 3 4 months old 0 0 0 One 4 5 Sugar content (Brix) 19.1 19.9 18.2 16.0 15.7 - Size uniformity evaluation (standard deviation value, cm) 1.2 0.9 1.1 3.5 2.1 -

Referring to Table 1, it can be seen that the sweet potatoes grown according to the examples have excellent sugar content and excellent size uniformity.

In particular, when the sweet potato cultivation composition was additionally supplied at regular intervals as in Examples 2 and 3, it could be confirmed that the sugar content of the sweet potato was further improved.

As such, it can be confirmed that the sweet potato cultivation method according to the present invention has an effect of preventing the occurrence of edema in sweet potatoes and improving sugar content and size uniformity by utilizing the composition for cultivating sweet potatoes.

Claims (5)

(a) mixing 100 parts by weight of soybean flour, 50 parts by weight of pearl powder, 5 parts by weight of urea, and 12 parts by weight of coconut endothelial powder;
(b) rapidly freezing the mixture of step (a) at a temperature of -30 to -20 ° C, and then pulverizing the mixture into a 150 mesh powder;
(c) 1 kg of the powder of step (b) was sprinkled in a circular area with a diameter of 20 cm centered on the position where sweet potato seeds were to be planted in the soil where sweet potatoes were to be grown, and then 1 kg of the powder of step (b) was sprinkled for 2 to 3 months. maintaining; and
(d) planting sweet potatoes in the soil subjected to step (c);
including,
The soy flour is roasted at 70 ° C. for 30 minutes, sweet potato cultivation method.
delete According to claim 1,
The sweet potato cultivation method,
(e) additionally supplying 200 to 300 g of the powder of step (b) per sweet potato seed for 4 months at intervals of 1 month to the soil where sweet potatoes are planted;
Sweet potato cultivation method further comprising a.
According to claim 3,
(f) harvesting sweet potatoes after 1 to 2 months after step (e) and aging them for 14 days under an illumination condition of 0.2 lux or less;
Sweet potato cultivation method further comprising a.
According to claim 1,
The sweet potato is at least one sweet potato cultivation method selected from the group consisting of Yulmi, Shinyulmi, Jungmi, Geonmi, Yeonmi, Jinheungmi, Shincheonmi and Shingeonmi.