• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A liquid formulation is described for the treatment of wood from plants such as vines, almond trees or others, to enhance the self-defense and resistance of the plant against fungal diseases. The formulation consists of a compound based on copper, essential plant amino acids, menadione sodium bisulfite and water, with the particularity that copper is incorporated in the form of nanoparticles of a size less than 60 nm, and in a proportion less than 1, 0% by weight. The application of the formulation allows the incorporation according to different forms of fertirrigation, or by foliar route by means of an atomizing device. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2725076A1
    申请号:ES201830145
    申请日:2018-02-19
    公开日:2019-09-19
    发明作者:Chiné Jorge Casas；Ramos José Luis Ordóñez；Alfonso Ernesto Francisco Simó；Correa Enrique Javier Carrasco
    申请人:Agro Stock SA；
    IPC主号:
    专利说明:

    [0001] LIQUID FORMULATE BASED ON CUAN NANOPARTICLES AS A POTENTIAL FROM I TO SELF-DEFENSE OF I AS PL BEFORE AND USING THE SAME
    [0002]
    [0003]
    [0004]
    [0005] Technical Field of the Invention
    [0006] The present invention relates to a liquid formulation based on copper oxide nanoparticles (CuO) as a plant self-defense enhancer. The invention also relates to the use of said formulation in the defense of plants and trees such as vines, almond trees and others of a similar nature against certain pathogens that cause fungal diseases in the wood of such plants.
    [0007]
    [0008] The technical field in which the present invention is registered is included within the industrial sector dedicated to the manufacture and application of fertilizers and other products to promote and enhance the self-defense of trees and plants.
    [0009]
    [0010] Background of the invention
    [0011] Fungal wood diseases (EFMV) affect all major areas of grapevine cultivation in the world. Currently, the EFMV are the main concern of the wine sector in terms of plant health. In Spain, it is estimated that 50% of vineyard plots have a plant affected by EFMV. There are no fungicides or other control strategies that achieve the complete eradication of pathogens. The losses they cause are so large that the term "Philoxera of S. XXI" has already begun to be used.
    [0012]
    [0013] Traditionally, the treatment of such diseases has typically been based on the use of certain compounds formulated based on copper metal. An example of a compound for the treatment of these diseases in the wood of the vine has been described in the patent document P-201700511 of the same applicant, in which a liquid formula obtained by mixing sodium lignosulfonate is claimed (between 10 % and 15% by weight), copper sulfate (between 15% and 25% by weight), a water-soluble addition compound of vitamin group K (mentioned as MSB, in a percentage of between 0.20% and 0.40% by weight), and free amino acids of plant origin (between 1.30 and 1.75% by weight), the rest being water until 100% by weight is completed. The application of This formulated to the vines has allowed to improve the metabolic processes that occur during the different stages of development, improving the appearance of the treated plants, activating their self-defense and resistance to biotic and abiotic adverse conditions, thereby allowing to increase the yield and production of the crops.
    [0014]
    [0015] As is known, unlike other fungal diseases such as mildew (caused by Plasmopara vititicola), oidium (caused by Uncinula necátor) or botrytis (caused by Botrytis cinerea), wood diseases are multiannual and are caused by more of 100 different fungal species, associated with a set of symptoms. Pathogenic fungi infect the wood and develop internally in the trunk and arms, causing a necrosis and / or wood rot. In the case of the vineyards, the diseased vines have a progressive loss of vigor, reducing the quantity and quality of the harvest year after year. In all cases and as a consequence of the fungal infection, a progressive decay occurs and the plants end up dying, which forces to replace the vineyard with the consequent economic consequences that all this entails.
    [0016]
    [0017] Although the behavior of the formulation described in the aforementioned patent document has improved the response of the plants to which it has been applied, the continuous research carried out by the inventors has allowed the formulation of a new composition that increases self-defense and the resistance of the plant, which has economic advantages as far as the cost of production is concerned, and which has above all a much less invasive behavior towards the environment than others formulated in the prior art.
    [0018]
    [0019] To this end, as those skilled in the art know, copper has the characteristic of activating certain enzymes involved in the synthesis of lignin in plants and is essential for various enzyme systems. It is also necessary in the process of photosynthesis, essential for the respiration of plants and adjuvant of these in the metabolism of carbohydrates and proteins, also helping to intensify the taste and color in vegetables and flowers.
    [0020]
    [0021] When there is a deficiency of copper, the symptoms of this deficiency occur in the new leaves, varying these deficiencies depending on each crop, generating a curl and a slight chlorosis in the whole leaf or in the veins of the new ones.
    [0022] It is therefore clear that copper is a necessary element for plants. However, it often happens that the contribution of this element to plants occurs in amounts that exceed the allowed limits, generating a toxicity that affects the development of the root, burning its tips and causing excessive lateral growth. It must also be taken into account that high levels of copper in plants can compete with the absorption of other elements, such as iron, molybdenum or zinc. In the case of new crops, at first they may become greener than normal, then they will show symptoms of iron deficiency and probably other micronutrients, and if not corrected in time, the threat of copper toxicity can reduce branching. and finally cause the deterioration of the plant.
    [0023]
    [0024] By all this, it is understood that in the state of the art there is a need for a formulation that applied to the plants allows a normal development and behavior of the plants, both in trunk, arms and leaves and at the reticular level, in which The copper content is as low as possible, guaranteeing a sufficient contribution to strengthen the plant's self-defense and resistance and without risk to the environment.
    [0025]
    [0026] Description of the invention
    [0027] The liquid formulation of the present invention has been developed taking into account the needs of the current technique mentioned above. In this regard, the present invention relates to a liquid formulation based on CuO nanoparticles, in the form of copper oxide (CuO) nanoparticles, as an enhancer of plant self-defense and intended to improve their physiological efficiency. More particularly, the invention relates to a liquid formulation that makes it possible to reduce the incidence and severity of the symptoms of diseases in plants, in particular of wood (inhibiting the action of certain pathogens) and fungal diseases such as Mildiu, while reducing perspiration and achieving greater net photosynthesis. Similarly, one of the fundamental characteristics of the present formulation is the low concentration of copper that it presents, which makes it a formula that is quite environmentally friendly.
    [0028]
    [0029] The use of the formulated invention allows to improve the metabolic processes that occur during the different stages of development, improving the appearance of the treated plants, activating their self-defense and resistance to biotic and abiotic adverse conditions, thereby increasing the yield and crop production.
    [0030] For this, the formulation of the present invention includes copper, essential plant amino acids and a derivative of vitamin K (MSB, sodium menadione bisulfite or Vitamin K3), with the particularity that copper is incorporated in the form of nanoparticles, being able to multiply In this way, the protective surface of the treatments while ensuring better adhesion and persistence of copper on the plant tissues, thus increasing the crop protection time. This composition also allows the formulation of the invention to also act as a stimulant of certain metabolic reactions of the basic plants for their development and growth.
    [0031]
    [0032] In the agricultural field, nanotechnology can offer nanomaterials that can act as an elicitor for plants, in addition to other functions. An elicitor is defined as a compound that, when applied exogenously, is capable of activating or triggering the natural synthesis of other substances in the plant, stimulating the metabolism and activating the defensive response of the plant. But not only that, nanomaterials can act as more effective nutrients or pesticides with fewer side effects and with greater efficacy.
    [0033]
    [0034] These new fertilizers, unlike the products currently available in the market, will have a potentiating effect because their presence in their composition: I) favors the assimilation of nutrients and prevents contamination and degradation of soils and hydrological basins; II) improves the general state of the crop, via metabolic activation and / or other routes, resulting in better production and higher quality; III) stimulates the plant's natural defenses by reducing the use of fungicides; IV) reduces the amount of raw materials needed by making crop fertilization more effective avoiding eutrophication problems in the surrounding areas; V) cost reduction and VI) improvement of fruit quality both before and after harvest (Biswal SK, Nayak AK, Parida UK, Nayak PL, Applications of nanotechnology in agriculture and food sciences. IJSID.
    [0035] 2012; 2 (1): 21-36).
    [0036]
    [0037] As is known, the substance identified as MSB in the present description, together with different metal cations in the same formulated as those of Ca, Zn, Mn and of course Cu, improves the assimilation of those metals (and their respective oxides) by part of the plant. Thus, if the formula is applied by root, it stimulates the formation of new roots, which are the most effective for the absorption of these metals of high atomic weight and transport in the xylem (ascending system), while in foliar application it improves the absorption metabolism towards the phloem.
    [0038]
    [0039] An important finding of the present invention is that, in the proposed formulation, the conjunction of the effects of amino acids, which increase the penetration into the plant of any molecule that accompanies them, together with the "carrier" effect of the MSB on the cations, ensure that the penetration of copper oxide nanoparticles (CuO) can be ensured. Thus, thanks to the general improvement of the plant metabolism associated with the MSB, the circulation of the CuO nanoparticles in the sap of the plant, both in the phloem and in the xylem, is favored, thus ensuring arrival from nanoparticles to all parts of the crop.
    [0040]
    [0041] According to the invention, the proposed liquid formulation responds to the composition corresponding to the following qualitative and quantitative formula:
    [0042]
    [0043] Copper (in nano particles) 0.1% - 1.0% (by weight)
    [0044] Essential plant amino acids 10% - 25% (by weight)
    [0045] Menadione sodium bisulfite (Vitamin K3) 0.2% - 0.4% (by weight)
    [0046] Water Rest up to 100% by weight
    [0047] Preferably, the size of the CuO nanoparticles involved in the liquid formulation of the present invention is less than 60 nm, and more preferably is in a range between 8 nm and 40 nm.
    [0048]
    [0049] The greater efficiency of CuO nanoparticles with respect to other forms of copper, is mainly due to the small size of this format, since thanks to this, a greater dispersion of said particles on the sheets and the fruit, and on the other hand, we favor absorption.
    [0050]
    [0051] The foregoing can be seen in Figures 1.1 and 1.2, consisting of photomicrographs by which the way in which the copper from the formulation of the present invention is dispersed is compared on the surface of a sheet (Figure 1.1) with respect to the dispersion of copper from a conventional formulation (figure 1.2).
    [0052]
    [0053] It should be noted that in the photomicrographs of the mapping of elements on the sheet, it is observed that in the case of the CuO nanoparticles according to the invention, the points (Cu) they are distributed randomly, while in the treatment with the commercial formulation, the Cu is grouped in the intercellular areas instead of being distributed inside the cell. This confirms the mention made above regarding a greater dispersion of the nanoparticles. The molecules themselves have a nanometric size, but due to inertia in nature they tend to group together forming agglomerates, considerably increasing their size, so they are not considered nanoparticles. With the formulation of the invention, it was possible to obtain CuO nanoparticles with a size between 8 and 40 nm that do not tend to agglomerate, thus increasing their effectiveness. Figure 2 shows an example of a photomicrograph, performed with a transmission electron microscope that reproduces the size of the particles and their aggregation.
    [0054]
    [0055] As mentioned previously, copper is necessary in the process of photosynthesis, since it is essential for the respiration of plants and is part of the prosthetic group of numerous proteins such as ascorbic acid, phenol or dexides of oxidases. cytochrome It favors the use of nitrogen and protein synthesis, also acting as a stabilizer of chlorophyll and helping to intensify the taste and color of vegetables and flowers. Although it is an essential element, it is also considered a heavy metal that can accumulate in the soil, with the peculiarity that it is hardly biodegradable. This presents a risk, since at acidic pH, copper becomes more soluble and therefore can become toxic to auxiliary fauna. Therefore, as previously stated, the liquid formulation of the invention combines the advantage provided by the small size of the CuO nanoparticles, with the vehicular effect provided by the MSB and the complexing power of the essential plant amino acids, facilitating thus the absorption of copper contributed by the plant. Likewise, it produces a greater mobilization of copper in the plant, allowing its assimilation quickly, efficiently and abundantly and allowing it to reach the place where they should exert their action. In this way, it is possible to optimize the metabolic processes that occur during the different stages of plant development, improving the appearance of the treated plants, activating their self-defense and resistance to biotic and abiotic adverse conditions, thereby allowing to increase the yield and Crop production. At the same time, by using a reduced amount of copper, the accumulation in the soil of this metal is reduced, thus contributing to a reduction of the environmental impact.
    [0056]
    [0057] In a preferred use form of the formulation of the invention, it is incorporated into the soil through fertirrigation, drip irrigation, sprinkling or distributing it in areas close to the plant in blanket irrigation, or foliar, applying with an atomizer, in the initial stages of crop development, to stimulate root formation new. The dose of the formulation of the invention to be used is 2.5 liters per hectare of cultivation and application.
    [0058]
    [0059] Example 1
    [0060] An assay of the formulation of the invention was carried out to evaluate its effect on diseases of the wood of the vine (EMV). To know more rigorously the responses of vine plants infected by the fungi that cause EMV and treated with different developed products, an experimental vineyard with 36 young vines in pots was implanted. The trial was carried out during the 2017 campaign at the VITEC facilities. The evaluation of the formulation of the invention comparatively with a commercial formulation has provided the following results:
    [0061]
    [0062] • PRODUCT 1 = Comparative Formulation
    [0063] • PRODUCT 2 = Invention Formulation
    [0064]
    [0065] The 36 plants were arranged in a design of 2 repeating blocks. Each experimental unit consisted of 3 plants considered biological replicas, totaling 6 strains per condition. In the test, 6 different conditions have been compared, as described below.
    [0066]
    [0067] 1. CONTROL WITHOUT FUNGUS WITHOUT PRODUCT [0 + C]
    [0068] 2. CONTROL WITH FUNGUS WITHOUT PRODUCT [0 + HH]
    [0069] 3. PRODUCT-FREE CONTROL 1 [1 + C]
    [0070] 4. PRODUCT-FREE CONTROL 2 [2 + C]
    [0071] 5. PRODUCT 1 2 FUNGI [1+ HH]
    [0072] 6. PRODUCT 2 2 FUNGI [2 + HH]
    [0073]
    [0074] In each condition 6 plants were analyzed (6 x 6 = 36 plants). During the study, the water and nutritional contributions applied to the vineyard under study were controlled. Periodically the necessary controls of viticultural management were carried out to keep the plants in optimal conditions of development and avoid any situation of abiotic stress.
    [0075] Once the first leaves were developed, the first treatment of the evaluated products was applied. Two weeks later, the inoculations were performed, infecting the plants with the causative agents of the selected EMVs. After two weeks, the second treatment with the evaluated products was applied and subsequently the plants were maintained for a further 3 months, until they were lifted to assess susceptibility and re-isolate pathogenic fungi.
    [0076]
    [0077] Treatments:
    [0078] Two treatments were performed. The products were applied directly to each pot. For this, 250 mL of a previously prepared dilution (1 mL of product 250 mL of distilled water / plant) was added.
    [0079]
    [0080] Inoculation:
    [0081] Following the methodology described by Úrbez-Torres et al., 2014, the plants of conditions 3, 5 and 6 (called "+ HH") were inoculated, which were infected with two fungal species that cause EMV: Diplodia seriata ( Ds) and Phaeoacremonium minimum (Pm) The method of inoculation consisted of depositing a small square of culture medium with the mycelium of the fresh and active fungus (7-10 days of growth), after making an incision in the plant with a scalpel The two fungi were inoculated together between the first and the second bud, then a cotton pad soaked in sterile water was placed and the wounds were sealed with parafilm.
    [0082]
    [0083] On the plants of control conditions 1, 2 and 4 (called "+ C"), not infected, an incision was also made, placing a piece of sterile agar and sealing with cotton and parafilm as described above.
    [0084]
    [0085] After evaluating the effectiveness of the different treatments, the following results were obtained:
    [0086]
    [0087]
    [0088]
    [0089] Table 1.1 Percentage (%) of inhibition for D. seriata in each of the areas
    [0090]
    [0091]
    [0092] Table 1.2 Percentage (%) of inhibition for P.minimum in each of the areas
    [0093]
    [0094] As observed in Table 1.1, in the areas treated with the formulation of the invention there was a reduction in the percentage of infection by the pathogen D. Seriata by 12.5%. But what is really interesting is the effect that the formulation of the invention has shown on the fungus P.minimum. Table 1.2 shows how the formula of the invention is able to completely inhibit the action of this fungus.
    [0095]
    [0096] As for the abiotic stress in the symptomatic strains, the results of the photosynthesis and perspiration values measured in the vineyard areas under study are shown in Figure 3. In this Figure, it can be seen how, under the conditions tested, the plants treated with the formulation of the invention exhibited lower transpiration and greater net photosynthesis, which suggests an improvement in physiological efficiency.
    [0097]
    [0098] Example 2:
    [0099] An assay of the formulation of the invention was carried out to evaluate its effect against symptoms of mildew. Specifically, a test was carried out with 2 plots that correspond to 2 different lots (FCL98 and VN42), within which 3 treatments have been established (control, formulated invention and comparative formulation). All with 4 repetitions, as shown in the scheme of the test that has been represented in Figure 4 of the attached drawings. Together, the number of plants on which copper treatments have been tested is 1200 plants for each of the lots. The formulation of the invention was applied via foliar and the test was carried out during the 2017 campaign by the University of Navarra.
    [0100]
    [0101] To quantify the symptoms of mildew, 20 plants from each batch and repetition were randomly selected and, in each of them, the following were counted:
    [0102]
    [0103] • Total number of leaves per plant (healthy and affected)
    [0104] • Total number of leaves affected by mildew
    [0105] •% mildew condition in the affected leaves
    [0106]
    [0107] With this data it has been calculated for each repetition:
    [0108]
    [0109] • Incidence:
    [0110] 1. Number of plants affected by mildew (which presented some symptoms on some leaf)
    [0111] 2.% affected leaves
    [0112] • Severity: Average of% affection in the total of the affected leaves.
    [0113]
    [0114] Results Incidence of mildew.
    [0115]
    [0116]
    [0117]
    [0118] Table 1.3 Percentage (%) of reduction of symptoms in plants in each of the Areas.
    [0119]
    [0120]
    [0121]
    [0122] Table 1.4 Percentage (%) of reduction of number of affected leaves in each of the Areas
    [0123]
    [0124] As can be seen in Table 1.3, in the areas treated with the formulation of the invention and with the comparative formulation, the percentage of plants that showed any symptoms has been slightly lower in the treated plants, accounting for 5% less affected plants .
    [0125]
    [0126] At the same time, in Table 1.4 it is observed that the number of affected leaves has been clearly lower in the strains treated with the formulation of the invention (a 21% less), while treatment with the comparative formulation, resulted in a condition also lower, but somewhat smaller (12%).
    [0127]
    [0128] Severity:
    [0129] • If% of affected leaf surface is evaluated, it has also decreased with treatments, 26% in the case of the formulated invention and 22% in the comparative formulation, with respect to the control, as it appears in the respective representations shown in Figure 5 of the attached drawings.
    [0130]
    [0131] Industrial applicability
    [0132] As can be seen from the foregoing description of a preferred embodiment, the invention is particularly applicable in the industrial sector dedicated to the manufacture and application of products to promote and enhance the self-defense of trees and plants.
    权利要求:
    Claims (7)
    [1]
    one.
    [2]
    2.
    [3]
    3.
    [4]
    Four.
    [5]
    5.
    [6]
    6.
    [7]
    7. - Use according to claims 4 to 6, characterized in that said formulation is applied in doses of the order of 2.5 liters per hectare of cultivation and application.
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    引用文献:
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    法律状态:
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