KR102373079B1 - Method for cultivating leaf vegetables - Google Patents

Abstract

The present invention relates to a method for growing leafy vegetables, and more particularly, to a method for growing leafy vegetables; and culturing by providing a culture solution containing 0.002 to 0.25 g/L of sodium L-glutamate after planting the seedlings.

Description

Cultivation method of leafy vegetables {METHOD FOR CULTIVATING LEAF VEGETABLES}

The present invention relates to a method for cultivating leafy vegetables, and more particularly, to a cultivation method capable of promoting the growth of leafy vegetables using sodium glutamate.

Leafy vegetables refer to vegetables that eat leaves, such as sesame leaves, lettuce, Chinese cabbage, lettuce, and spinach. In general, chemical fertilizers are widely used in cultivating leafy vegetables. Excessive use of such chemical fertilizers seems to temporarily supply nutrients to crops. Pollution and pesticide residue problems in agricultural products may occur.

In addition, in the case of excessive use of pesticides, the appearance and freshness of vegetables can be maintained to some extent and yield can be increased, but there are many harmful effects on public health, and the more pesticides are used, the more resistant they become. More and more toxic pesticides are used.

In order to solve the above problems, in Korea Patent Publication No. 10-0612641 (Cultivation of vegetables using natural minerals), an aqueous solution containing nano-minerals obtained by mixing natural mineral granite and water and then wet grinding is used. It has been disclosed to the public about a method of growing vegetables using In Korea Patent Publication No. 10-0416951 (a method of growing non-polluting vegetables), a special mixture prepared by mixing an insect repellent solution mixed with garlic extract, meat oil, and wood vinegar, and native microorganisms mixed with rice bran, cow powder and compost are mixed. Disclosed is a method for growing non-polluting vegetables using the manufactured native microbial compost.

Although the above inventions are studies on how to grow pollution-free vegetables using substances harmful to the human body as fertilizers, they are not easily available materials for consumers, so they are difficult to be widely applied in reality and are not suitable in terms of cost. .

On the other hand, amino acids are produced in the metabolic process of crops and are known to be effective in enhancing sugar content and color by promoting the absorption of minerals. About 20 amino acids are common to organisms and are used in protein synthesis. Amino acids are also known to promote the growth of crops by adsorbing inorganic ions and moving them together when moving within the body of the crop, thereby promoting the absorption of various minerals necessary for growth and metabolism.

Therefore, if a technology for improving the growth of leafy vegetables using specific amino acids among amino acids is developed, it is expected to be widely applied in related fields.

Accordingly, one aspect of the present invention is to provide a method for cultivating leafy vegetables.

According to one aspect of the present invention, the seedling step of leafy vegetables; And after planting the seedlings, there is provided a cultivation method of leafy vegetables comprising the step of culturing by providing a culture solution containing 0.002 to 0.25 g/L of sodium L-glutamate.

When culturing leafy vegetables according to the present invention, when sodium L-glutamate is added in a certain concentration range, the growth of lettuce can be significantly promoted compared to the untreated group. Through this, the cultivation period of lettuce during cultivation can be shortened and the production of lettuce per unit area can be increased, which is expected to contribute positively to the income of farmers.

1 is a graph showing the effect of treatment with a concentration of L-sodium glutamate (0.5-2.0 g/L) on the growth of blue and red skirts.
Figure 2 is a photograph showing the growth results after harvest of lettuce according to the concentration of L- sodium glutamate (0.5 ~ 2.0g / L) treatment.
Figure 3 is a graph showing the effect of the treatment of the concentration of L- sodium glutamate (0.002 ~ 0.25g / L) on the growth of the blue skirt and red skirt.
Figure 4 is a photograph showing the growth results after harvest of lettuce according to the concentration of L- sodium glutamate (0.002 ~ 0.25g / L) treatment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiment of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below.

According to the present invention, there is provided a method for cultivating leafy vegetables comprising the step of seeding and cultivating the leafy vegetables. In particular, by regulating the concentration of sodium L-glutamate in the culture medium, the cultivation and growth of excellent seedlings is promoted, thereby advancing the harvest time and improving the quality. A cultivation method that can be improved is provided.

In more detail, the method for cultivating leafy vegetables of the present invention includes the step of seeding the leafy vegetables; And after planting the seedlings, it will include the step of culturing by providing a culture solution containing L- sodium glutamate 0.002 to 0.25 g / L. Preferably, it is cultivated by providing a culture solution containing 0.01 to 0.25 g/L of sodium L-glutamate.

When the concentration of sodium L-glutamate is out of the above range, the dry weight (shoot dry weight) of leafy vegetables is lowered.

Among amino acids, L-glutamic acid has been widely used as sodium L-glutamate, a food additive and sweetener, along with sodium salt, and the present invention shows that it is possible to derive a change in the growth of crop cultivation through the control of the concentration of L-sodium glutamate. it will be used

In the cultivation method of the present invention, the "seedling stage" refers to the overall operation of growing the best quality seedlings (young seedlings, 幼苗) suitable for formal planting after cultivating for a certain period of time. The seedling step may be performed in a rock wool cell or horticultural medium, but is not limited thereto.

The seedling step of the present invention may be carried out until the seedlings in which the true leaves have developed 2 to 3 sheets are obtained, for example, for 5 to 10 days.

The seedling step of the present invention is preferably performed at a temperature of 23°C to 27°C and a photoperiod of 12h to 16h, more preferably at 24°C to 26°C, for example, 25°C. When the temperature of the seedling step is out of the range of 23°C to 27°C, there is a problem in that growth is reduced.

The photoperiod of the seedling step and the cultivating step is preferably performed under the conditions of photoperiod 12h to 16h, and more preferably under the condition of photoperiod 13 to 15h, for example, under the condition of photoperiod 14h. When the photoperiod of the seedling step is less than 12 hours, the biomass tends to decrease, and when it exceeds 16 hours, the biomass does not increase compared to the increase in energy consumption due to the increase in the photoperiod, which is undesirable in terms of process economy.

Cultivation of leafy vegetables of the present invention is preferably performed under conditions of 55% to 75% relative humidity and 130 μmol/m ² /s to 170 μmol/m ² /s of light intensity.

If the relative humidity is less than 40%, there is a physiological disturbance problem due to drying, and if it exceeds 80%, there is a problem in the absorption of positive water due to the slowing of transpiration.

When the luminous intensity is less than 130 μmol/m ² /s, there is a problem of painting due to a decrease in the amount of light, and when it exceeds 170 μmol/m ² /s, there are problems such as power consumption and heat generation of artificial light. In this case, the light irradiation may use a fluorescent lamp or a light emitting diode device (LEDs), but is not limited thereto.

On the other hand, the seedling step is preferably performed by providing a culture medium containing L-sodium glutamate 0.05 g/L or less. Dry weight, shoot dry weight) may decrease.

In the present invention, the leafy vegetables may be lettuce, for example, the leafy vegetables may be red skirt lettuce or green skirt lettuce, preferably green skirt lettuce.

On the other hand, the culturing step of the present invention is preferably carried out under a temperature condition of 20 ℃ to 24 ℃, more preferably 21 ℃ to 23 ℃, for example, it is carried out at 22 ℃. When the temperature of the cultivation step is out of the range of 20°C to 24°C, there is a problem in that growth is reduced.

In the present invention, in the step of culturing by providing a culture solution containing 0.002 to 0.25 g/L of sodium L-glutamate after planting seedlings in the present invention, L-sodium glutamate is provided immediately after planting, or provided 2 to 10 days after planting. For example, it may be provided after 3 to 7 days, and the culture solution containing L- sodium glutamate may be replaced at intervals of 3 to 5 days, for example, may be replaced at intervals of 4 days.

On the other hand, the culture medium containing L- glutamate is meant to include the case of adding L- sodium glutamate to the commonly used culture medium within the scope of the present invention, or separately and simultaneously processing. In general, the basic culture solution that can be used in the present invention is not particularly limited, and, for example, Otsuka nutrient solution can be used.

The cultivating step of the present invention may be performed for 20 to 25 days after planting.

The cultivation of the present invention may be carried out by open field cultivation, facility cultivation, administrative cultivation, or hydroponics, in which case the hydroponic cultivation may be performed by fresh solution hydroponics (DFT) or thin-film hydroponics (NFT). It is not limited.

According to the present invention, when sodium L-glutamate is added in a certain concentration range when growing leafy vegetables according to the present invention, it is possible to promote the growth of leafy vegetables compared to untreated, thereby shortening the cultivation period, and furthermore, it is possible to reduce the amount of leaf vegetables per unit area. It can increase production and contribute positively to farm households' income.

Hereinafter, the present invention will be described in more detail through specific examples. The following examples are only examples to help the understanding of the present invention, and the scope of the present invention is not limited thereto.

Example

One. leafy Cultivation method

The correlation with crop growth was investigated using L-sodium glutamate, a sodium salt of glutamic acid, for hydroponics of lettuce. As for the lettuce used in this experiment, Cheongchima and Red skirt varieties of Jongmyo Asia Co., Ltd. were used.

The published seeds were sown in the captured rock wool cubes, and seedlings were carried out on the plant growth phase in which temperature, humidity and light intensity were controlled.

The conditions of seedling were maintained at a temperature of 25±2° C., a relative humidity of 65±10%, and a light intensity of 150±20 μmol/m ² /s (14h/day) until the true leaves were developed. After that, the seedlings with 2 to 3 true leaves were planted in the prepared hydroponics container and then cultivated for 20 to 25 days until harvest. At this time, the cultivation conditions were maintained until harvest at a temperature of 22±22° C., a relative humidity of 65±10%, and a light intensity of 150±20 μmol/m ² /s (14h/day). Five days after planting, Otsuka nutrient solution (EC=0.6㎲/cm, pH=6.5) in the fresh-water hydroponic cultivation system was supplied.

(1) Primary cultivation experiment

In the primary cultivation experiment, the concentration of L-sodium glutamate was 0 g/L (control), 0.5 g/L (Comparative Example 1), 1.0 g/L (Comparative Example 2) and 2.0 g/L (Comparative Example 3). Thus, it was supplied to a hydroponic cultivation device in fresh water, and the culture medium containing L-sodium glutamate was replaced every 4 days. The first cultivation test was harvested on the 25th day after planting.

(2) Secondary cultivation experiment

In the secondary cultivation experiment, the addition concentration of L-sodium glutamate was 0 g/L (control group), 0.002 g/L (Example 1), 0.01 (Example 2), 0.05 (Example 3), 0.25 g/L ( It was set to the level of Example 4), and the growth environment conditions were the same, and test cultivation was carried out. The secondary cultivation test was harvested on the 20th day after planting in consideration of the planting density of fresh-water hydroponics.

(3) sintering

As a result of the primary cultivation test, L-sodium glutamate was 0.5 g/L (Comparative Example 1), 1.0 g/L (Comparative Example 2) and 2.0 g/L compared to the untreated group (control group) supplied only with the Otsk nutrient solution. In the test group treated with (Comparative Example 3), the dry weight of lettuce (Shoot dry weigjt) was low, and as the concentration of L-sodium glutamate increased to 0.5, 1.0, and 2.0 g/L, the dry weight increased It was confirmed to decrease in inverse proportion ( FIGS. 1 and 2 ). More specifically, in the case of blue skirt lettuce, the concentrations of 0.5, 1.0, and 2.0 g/L decreased by 35, 49, and 66%, respectively, compared to untreated, and in the case of red skirt lettuce, it decreased by 41, 51, and 70%, respectively, compared to untreated. did

On the other hand, as a result of the secondary cultivation test, when the concentration of L-sodium glutamate was treated at 0.002 to 0.25 g/L, in the case of green skirt lettuce, the dry weight was the heaviest at the concentration of 0.05 g/L, and 45% compared to untreated. increased. In the case of red skirt lettuce, similar results were obtained, and the dry weight was increased by 43% at the treatment of 0.05 g/L ( FIGS. 3 and 4 ).

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and variations are possible within the scope without departing from the technical spirit of the present invention described in the claims. It will be apparent to those of ordinary skill in the art.

Claims (9)

A step of growing leafy vegetables performed by providing a culture solution containing L-sodium glutamate at an amount of 0.05 g/L or less; and
A method for cultivating leafy vegetables, comprising planting the seedlings obtained in the seedling step and cultivating a culture solution containing 0.002 to 0.25 g/L of sodium L-glutamate.
delete The method according to claim 1, wherein the leafy vegetable is lettuce.
The method of claim 1, wherein the leafy vegetables are red skirt lettuce or green skirt lettuce.
The method of claim 1 , wherein the seeding step and the culturing step are performed at a light intensity of 130 μmol/m ² /s to 170 μmol/m ² /s.
The method according to claim 1, wherein the seedling step and the culturing step are under a photoperiod of 12h to 16h.
The method of claim 1, wherein the cultivating step is performed for 20 to 25 days after planting.
The method according to claim 1, wherein the light irradiation is made of a fluorescent lamp or a light emitting diode device (LEDs).
The method of claim 1 , wherein the culturing step is performed by open-field cultivation, facility cultivation, administrative cultivation, or hydroponics.

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