JP2009269852A - Quality improver for crop - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a quality improver for crops excellent in the effect of improving the quality of crops. <P>SOLUTION: The quality improver contains zinc and a peptide as active ingredients. Allowing crops to absorb the zinc and peptide contained in the improver makes it possible to increase salt concentration of the crops, which results in markedly improved qualities such as an increased crop weight and an increased fruit sugar degree. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a quality improver suitably used for various crops.

  In order to improve the quality of crops, methods of applying water stress such as water restriction in tomatoes and sheet-covered cultivation in mandarin oranges are performed at agricultural production sites. Thus, in the method of stressing crops, even if the quality is improved, there is a risk that the stress may lead to a decrease in fruit enlargement or a decrease in tree vigor. In addition, a great deal of labor is required such as sheet covering work.

Therefore, a fertilizer (for example, see Patent Document 1) that improves the quality of the crop by fertilizing the cultivated soil, or a quality improver (for example, Patent Document 2) that improves the quality by spraying on the crop. Have been proposed in the past.
JP-A-10-265289 JP 2002-265306 A

  When using a fertilizer or a quality improver as described above, it is possible to improve the quality of the crop without stressing the crop and without requiring a great deal of effort. The effect of improving the quality of crops is not always sufficient, but there is room for improvement.

  This invention is made | formed in view of said point, and it aims at providing the quality improvement agent for crops excellent in the effect of the quality improvement of a crop.

  The crop quality improving agent according to the present invention is characterized by containing zinc and a peptide as active ingredients.

  According to the present invention, zinc and peptides contained in the crop quality improver are absorbed by the crop, thereby increasing the salt concentration in the crop, increasing the crop weight, increasing the sugar content of the fruit, etc. It can be improved.

  In the present invention, the peptide is obtained by hydrolyzing an animal-derived or plant-derived protein.

  According to this invention, by hydrolyzing protein, it can be contained in the form of various peptides that are easily absorbed by crops, and a high quality improvement effect can be obtained.

  According to the present invention, the zinc and peptide contained in the crop quality improver are absorbed by the crop, thereby increasing the salt concentration in the crop, increasing the crop weight, increasing the sugar content of the fruit, and the like. It can be improved.

  Moreover, since the quality improving agent for crops of the present invention can be worked only by the process of spraying on the crops, the labor can be reduced, and stress is not applied to the crops. Therefore, the quality can be improved.

  Hereinafter, the best mode for carrying out the present invention will be described.

  The quality improving agent for crops according to the present invention is a mixture of zinc and peptide containing water as a medium, and is used in the form of an aqueous solution.

  Zinc is blended as a zinc salt, such as zinc nitrate or zinc sulfate. Of course, the compound form of the zinc salt is not limited to these.

  Moreover, what was produced | generated by hydrolyzing an animal-derived animal protein and a plant-derived plant protein can be used for a peptide. Although it does not specifically limit as animal protein, Protein obtained from livestock, such as fish, a cow, a pig, and a sheep, poultry, shark oil, etc. can be used. The vegetable protein is not particularly limited, but soybean, rapeseed, peanut, corn, and the like can be used.

  The type of peptide contained in the crop quality improver according to the present invention depends on the type of protein to be hydrolyzed. For example, when keratin derived from livestock hair or poultry feathers is hydrolyzed, glycine and arginine , Valine, proline, serine and the like can be obtained. Since the peptide is obtained by hydrolyzing a protein in this way, it contains a lot of other amino acids.

  The method for hydrolyzing protein is not particularly limited, and examples thereof include a method of alkaline decomposition with an alkaline substance such as caustic soda, and a method of acid decomposition with an acidic substance such as hydrochloric acid.

  In the quality improver for crops of the present invention, the content of zinc and the content of peptides are not particularly limited, but in the stock solution before dilution with water, zinc is 0.1 to 0.1 in terms of elemental zinc. It is preferable that 0.2 mass% and the peptide are contained in the range of 0.2 to 1.0 mass% in terms of N.

  In addition to these zinc and peptides, the crop quality improver of the present invention can contain fertilizer components such as nitrogen, phosphoric acid, potassium, and bitter soil that become nutrients for crops, and manganese and boron. Furthermore, if necessary, a surfactant, a spreading agent for adhering to the leaf stem, an antiseptic, and the like can be blended.

  Then, the stock quality improver for crops is diluted 200 to 500 times with water, adjusted to use so that the zinc concentration is 20 to 60 ppm and the peptide concentration is 10 to 50 ppm in terms of N. It can be given to crops by spraying the foliage directly on the foliage. If the zinc concentration or the peptide concentration is too high, there is a risk that the crop may be damaged such as a fruit peel, so it is preferable to use the zinc concentration or the peptide concentration adjusted to this range.

  The crop quality improver of the present invention can be applied not only to crops such as vegetables and fruits but also to horticultural crops. When sprayed on the crop, the active ingredient of the crop quality improver In particular, zinc and peptides can be absorbed into the crop from the foliage, increasing the salt in the crop, increasing growth and increasing the weight of the crop, and in the case of fruit plants can increase the sugar content of the fruit It can improve the quality of crops.

  The amount of application of the quality improver for crops varies depending on the type of crop and the degree of growth.For example, peaches have a large volume of trees, so the amount of application is large. Less.

  In addition, the use time of the quality improver for crops is not particularly limited. For example, fruits and vegetables such as tomatoes are colored two times or more, preferably at the end of the hypertrophy time in fruit trees such as mandarin oranges. Use three times.

  Next, the present invention will be specifically described with reference to examples.

Example 1
Porcine hair was soaked and dissolved in 1N aqueous caustic soda solution at a bath ratio of 1: 2, and neutralized with aqueous ammonia to obtain a peptide hydrolyzed protein derived from porcine hair.

  And the stock solution of the quality improvement agent for crops was prepared by mix | blending 0.6 mass part of zinc nitrate and 2.7 mass parts of said peptides with 100 mass parts of water.

(Comparative test 1)
80 mg of inorganic fertilizer nitrogen, phosphoric acid and potassium were added to and mixed with 900 g of black soil, and this was filled in a pot having a surface area of 100 square centimeters. Three komatsuna (variety: Teruyo) plants were planted per pot in this pot. This was grown up to 6 leaves in the house.

  The stock quality improver for crops obtained in Example 1 was diluted 300 times with water, and 50 cc per wagner pot was sprayed 3 times every 5 days.

  For comparison, a mixture of 0.6 part by mass of zinc nitrate in 100 parts by mass of water (referred to as Comparative Example 1) was diluted 300 times and sprayed with foliage in the same manner.

  Five days after finishing the above-mentioned foliage spraying, the plant height of Komatsuna was measured, and Komatsuna was cut from the root, and the fresh weight that was the raw weight of Komatsuna immediately after cutting was measured. Furthermore, the stalks and leaves of Komatsuna were squeezed using a garlic squeezer, and the sugar content (BRIX) of the juice was measured with an Atago automatic correction refractometer. These results are shown in Table 1. In addition, Table 1 shows the average values measured for each Komatsuna ward 9 shares.

  As seen in Table 1, in stem and leaf length and fresh weight, there was no significant difference between Example 1 and Comparative Example 1, but the sugar content (sweetness) of Example 1 increased, It was confirmed that the effect of quality improvement was obtained.

(Example 2)
Porcine hair was soaked and dissolved in 1N aqueous caustic soda solution at a bath ratio of 1: 2, and neutralized with aqueous ammonia to obtain a peptide hydrolyzed protein derived from porcine hair.

  Then, 0.6 parts by mass of zinc nitrate and 2.6 parts by mass of the above peptide are blended in 100 parts by mass of water, and 2.0 parts by mass of a spreading agent (“Sucrose” manufactured by Mitsui Sugar Co., Ltd.). A stock solution of a quality improver for crops was prepared by blending 0.04 parts by mass of a preservative ("Anon LG" manufactured by NOF Corporation) and further blending a fertilizer component. When the stock solution of the quality improver for crops was analyzed, the composition contained 0.12% by mass of zinc, 0.2% by mass of peptide, 2% by mass of nitrogen, 8% by mass of phosphoric acid, 6% by mass of potassium, and 1% by mass of clay. %, Manganese 0.06% by mass, boron 0.05% by mass, and sugar content derived from the spreading agent 2% by mass (including preservative 0.04% by mass).

(Comparative test 2)
A 1 / 10,000 wagner pot was filled with fertilizer-adjusted soil, and Komatsuna (variety: Teruyo), which was separately sprouted and bred, was planted in three stocks per pot. This was grown up to 6 leaves in the house.

  The stock quality improver for crops obtained in Example 2 was diluted 300 times with water, and 50 cc per wagner pot was sprayed three times every five days.

  For comparison, a stock solution of a crop quality improver having the same composition as in Example 2 except that zinc and peptide are not included is prepared (referred to as Comparative Example 2), and this is diluted 300 times and the foliage is similarly prepared. Scattered.

  Four days after finishing the above-mentioned foliage spraying, the plant height of Komatsuna was measured, and Komatsuna was cut from the root, and the fresh weight that was the raw weight of Komatsuna immediately after cutting was measured. Moreover, the stem and leaf part of this Komatsuna was squeezed using the garlic squeezer, and the electrical conductivity (EC) of this juice was measured. These results are shown in Table 2. Table 2 shows the average values measured for 9 shares of each Komatsuna ward.

  As can be seen from Table 2, by applying the crop quality improver of Example 2 containing zinc and peptide, the plant height is higher and fresh compared to the case of Comparative Example 2 not containing zinc and peptide. The effect of quality improvement was noticeable. Here, the electrical conductivity (EC) of the juice squeezed from the stem and leaf part of Komatsuna is increased by spraying the quality improver for crops of Example 2 containing zinc and peptide. This means that the salt concentration of the komatsuna increases, and the increase in the salt concentration increases the nutritive value of komatsuna, and the effect of quality improvement is observed.

(Comparative test 3)
The stock quality improver for crops obtained in Example 2 was diluted 300 times with water and sprayed on tomatoes (variety: Momotaro Eight) in the middle of growing in five sections of a farm field. Spraying was carried out three times with a dilution of 150 liters per 10 ares every 7 days.

  Then, after finishing the last foliage spraying, tomato fruits were collected 7 days later, and the fresh weight of the fruits and the electrical conductivity (EC) of the fruit juice were measured. For comparison, in the same section, tomato fruits that were not sprayed with the crop quality improver were collected at the same time, and the fresh weight of the fruits and the electrical conductivity (EC) of the fruit juice were measured. These results are shown in Table 3. Table 3 shows the average values measured for 13 tomato fruits.

  As can be seen in Table 3, the fresh weight and sugar content of the tomato fruit are increased by spraying the crop quality improver of Example 2 containing zinc and peptide as compared to those not sprayed. By increasing the sugar content, the sweetness of the fruit increases and the taste improves, and the effect of quality improvement is confirmed. In addition, the electrical conductivity (EC) of the fruit juice is increased by spraying the crop quality improving agent of Example 2 containing zinc and peptide, and the nutritional value of the tomato fruit is increased by increasing the salt concentration. By increasing the salt concentration and increasing the sugar content, a tomato fruit having a long shelf life can be obtained.

(Comparative test 4)
The stock solution of the quality improving agent for crops obtained in Example 2 was diluted 500 times with water and sprayed on the mandarin orange (variety: Qingdao) in the middle of growing in five sections of the farm field. Spraying was carried out twice with 10 liters of diluted solution every 7 days.

  And after finishing the last foliage spraying, the mandarin fruit was collected 30 days later, and the fresh weight of the fruit and the electrical conductivity (EC) of the fruit juice were measured. For comparison, mandarin fruits were collected at the same time for mandarin oranges not sprayed with the crop quality improver in the same compartment, and the fresh weight of the fruits and the electrical conductivity (EC) of the fruit juice were measured. These results are shown in Table 4. Table 4 shows the average values measured for 15 tangerine fruits.

  As can be seen in Table 4, by applying the crop quality improver of Example 2 containing zinc and peptide, the sugar content of the mandarin fruit is increased compared to those not applied, and the quality improvement The effect is confirmed. Some compartments have reduced fruit fresh weight, but not excessive reduction, many others have increased fruit fresh weight. Moreover, the electrical conductivity (EC) of fruit juice has become high by spraying the quality improving agent for crops of Example 2 containing zinc and a peptide, and the nutritional value of the mandarin fruit has increased by the increase in salt concentration.

Claims (2)

  A crop quality improver comprising zinc and a peptide as active ingredients.   The quality improving agent for crops according to claim 1, wherein the peptide is obtained by hydrolyzing an animal-derived or plant-derived protein.