KR20130079794A - Fertilizer for plant cultivation and method for manufacturing the same - Google Patents
Fertilizer for plant cultivation and method for manufacturing the same Download PDFInfo
- Publication number
- KR20130079794A KR20130079794A KR1020120000500A KR20120000500A KR20130079794A KR 20130079794 A KR20130079794 A KR 20130079794A KR 1020120000500 A KR1020120000500 A KR 1020120000500A KR 20120000500 A KR20120000500 A KR 20120000500A KR 20130079794 A KR20130079794 A KR 20130079794A
- Authority
- KR
- South Korea
- Prior art keywords
- zeolite powder
- fertilizer
- solvent
- crop
- parts
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
- C05D9/02—Other inorganic fertilisers containing trace elements
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to a fertilizer for cultivating crops and a method for producing the same, wherein the fertilizer for cultivating crops according to an embodiment of the present invention is SiO 2 , Al 2 O 3 , P 2 O 5 , CaO, Na 2 O, Fe 2 O 3 , Zeolite powder containing MgO and K 2 O; And a solvent for dispersing the zeolite powder. Fertilizer for crop cultivation according to an embodiment of the present invention may help the growth of the crop and not cause acidification of the soil.
Description
The present invention relates to a fertilizer for cultivating crops and a method for manufacturing the same, and more particularly, to a fertilizer for cultivating crops and a method for producing the same, which helps the growth of the crop and does not cause acidification of the soil.
Rural farming is accelerating due to rapid industrialization and urbanization. As a result, the rural labor force is experiencing difficulties in farming due to aging and women. A lot of research is being developed and distributed to reduce rural labor force, and eco-friendly agricultural development research is continuously being carried out for stable production of agricultural products.
Recently, chemical fertilizer reduction policies have been implemented, and many farms are actively participating. However, the reality is that most farms still maintain fast fertilizer levels using fast-acting fertilizers. Because fast-acting fertilizers are easily lost, they reduce the efficiency of fertilizers, increase the fertilizer labor force, and cause various environmental pollution.
In order to reduce the labor required for fertilization, various types of slow-release fertilizer products have been researched, developed and produced. However, slow-release fertilizers use a variety of materials derived from petrochemicals. In addition, many steps and processes are required to prepare slow-fertilizing fertilizers, resulting in high production cost for efficiency and secondary soil contamination.
Therefore, there is a need for the development of an ideal clean fertilizer that can maintain the soil physical properties of soil, economic use of soil moisture, weed generation inhibitory effect and inorganic nutrient concentration required during the growth period of the crop.
An object of an embodiment according to the present invention is to provide a fertilizer for cultivating crops and a method for producing the same, which helps the growth of the crops and does not cause acidification of the soil.
One embodiment of the present invention is a zeolite powder containing SiO 2 , Al 2 O 3 , P 2 O 5 , CaO, Na 2 O, Fe 2 O 3 , MgO and K 2 O; And a solvent for dispersing the zeolite powder.
The zeolite powder may be formed by pulverizing mordenite, arnosocle, clinoptilolite and quartz.
The zeolite powder may have a particle diameter of 80 mesh or less.
The zeolite powder may have a particle size of 100 to 350 mesh.
The solvent may be a solution of one or more minerals selected from the group consisting of Si, Al, P, Ca, Na, Fe, Mg and K.
Another embodiment of the present invention comprises dispersing a zeolite powder containing SiO 2 , Al 2 O 3 , P 2 O 5 , CaO, Na 2 O, Fe 2 O 3 , MgO and K 2 O in a solvent. Provided is a method for preparing fertilizer for growing crops.
The zeolite powder may have a particle diameter of 80 mesh or less.
In the method for producing the crop fertilizer, at least one mineral selected from the group consisting of Si, Al, P, Ca, Na, Fe, Mg, and K may be dissolved in a solvent, and the zeolite powder may be dispersed in the solvent.
In the method for preparing the crop cultivation fertilizer, the zeolite powder may be dispersed in the solvent after immersing the pulverized mordenite, anolsoclay, clinoptilolite and quartz in a solvent.
The zeolite powder and the solvent may be mixed in a ratio of 1: 3 to 1: 100.
Dispersing the zeolite powder in the solvent may be carried out by stirring the zeolite powder and the solvent and then aged at 30 to 40 ° C. for 8 to 15 hours.
The fertilizer for crop cultivation according to an embodiment of the present invention is a natural zeolite powder that is pulverized into fine particles and dispersed in an aqueous solution, and can be easily absorbed by the crop.
It also contains a large amount of minerals, which can restore the mineral balance of the soil in which the crop is cultivated. This can eliminate the cause of germs, improve the quality of the crop, and maintain freshness for a long time.
Fertilizer for crop cultivation according to an embodiment of the present invention can activate the germination, rooting, and growth of the crop. In addition, by quickly recovering roots, leaves, berries, etc. weakened by pesticide damage, cold water, etc., the yield can be greatly increased, the harvesting period can be extended, and the freshness can be extended, and the color of flowers and fruits becomes clear and the sugar content can be increased. It has excellent immunity against pests, pesticides and heavy metals degrading ability, and fertilization efficiency can be increased to absorb more nutrients.
It also improves acidified soils due to the lack of essential minerals and pesticide damage to weakly alkaline soils. Its ionic action with organic fertilizers can significantly increase yields and prevent damage to crops and pests.
1 is a view schematically showing a manufacturing process of a crop cultivation fertilizer according to an embodiment of the present invention.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, embodiments 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. Furthermore, embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings may be exaggerated for clarity of description, and the elements denoted by the same reference numerals in the drawings are the same elements.
Fertilizer for crop cultivation according to an embodiment of the present invention is a zeolite powder containing SiO 2 , Al 2 O 3 , P 2 O 5 , CaO, Na 2 O, Fe 2 O 3 , MgO and K 2 O; And a solvent for dispersing the zeolite powder. Fertilizer for crop cultivation according to an embodiment of the present invention is a fine powder zeolite particles dispersed in a solvent, it may be a liquid fertilizer in the form of an emulsion. Hereinafter, the fertilizer for crop cultivation according to an embodiment of the present invention may be referred to as a liquid fertilizer.
The zeolite powder may have a particle diameter of 80 mesh or less. In the present invention, the mesh may be measured with a standard body as a unit indicating the particle size of a solid, and the number of holes of one inch compartment may be referred to as a mesh. For example, a 300 mesh can represent the size of a powder that passes through a sieve containing 300 holes within 2.54 cm of the length and width of the standard. In the present invention, the particle diameter of the powder is 80 mesh or less may mean that the particle diameter of the powder is smaller than 80 mesh.
According to one embodiment of the present invention, the particle size of the zeolite powder may be 100 to 350 mesh. Alternatively, the particle size of the zeolite powder may be 200 to 350 mesh.
The smaller the particle size of the zeolite powder, the more uniformly it can be dispersed in the solvent and can be easily absorbed by the crop.
The content of SiO 2 may be 65 to 80 parts by weight based on 100 parts by weight of the zeolite powder. Alternatively, the content of SiO 2 may be 70 to 75 parts by weight based on 100 parts by weight of the zeolite powder.
The content of Al 2 O 3 may be 10 to 20 parts by weight based on 100 parts by weight of zeolite powder. Alternatively, the content of Al 2 O 3 may be 12 to 18 parts by weight based on 100 parts by weight of the zeolite powder.
The content of P 2 O 5 may be 0.01 to 1 part by weight based on 100 parts by weight of the zeolite powder. Alternatively, the content of P 2 O 5 may be 0.05 to 0.5 parts by weight based on 100 parts by weight of the zeolite powder.
The CaO content may be 2 to 5 parts by weight based on 100 parts by weight of zeolite powder. Alternatively, the content of CaO may be 3 to 4 parts by weight based on 100 parts by weight of the zeolite powder.
The Na 2 O content may be 0.01 to 1 part by weight based on 100 parts by weight of the zeolite powder. The Na 2 O content may be 0.1 to 0.5 parts by weight based on 100 parts by weight of the zeolite powder.
The content of Fe 2 O 3 may be 3 to 10 parts by weight based on 100 parts by weight of zeolite powder. Alternatively, the content of Fe 2 O 3 may be 3 to 5 parts by weight based on 100 parts by weight of zeolite powder.
The content of MgO may be 2 to 8 parts by weight based on 100 parts by weight of zeolite powder. Alternatively, the content of MgO may be 3 to 5 parts by weight based on 100 parts by weight of zeolite powder.
The content of K 2 O may be 2 to 0.1 parts by weight based on 100 parts by weight of zeolite powder. Alternatively, the content of K 2 O may be 0.5 to 1 part by weight based on 100 parts by weight of the zeolite powder.
According to one embodiment of the present invention, the zeolite powder may be a pulverized natural mineral. More specifically, the zeolite powder may be formed by pulverizing mordenite, anorthoclase, clinoptilolite and quartz. Using natural minerals can help prevent side effects on crops.
The content of mordenite may be 30 to 40 parts by weight based on 100 parts by weight of zeolite powder.
The content of the arnosocle may be 30 to 40 parts by weight based on 100 parts by weight of the zeolite powder.
The amount of clinoptilolite may be 20 to 30 parts by weight based on 100 parts by weight of zeolite powder.
The content of the quartz may be 1 to 5 parts by weight based on 100 parts by weight of the zeolite powder.
In addition, according to one embodiment of the present invention, the zeolite powder may be formed by further including montmorillonite (Montmorillonite). The content of montmorillonite may be 3 parts by weight or less based on 100 parts by weight of zeolite powder.
According to one embodiment of the invention, the solvent for dispersing the zeolite powder is not particularly limited, but may be a water-soluble solvent, for example water. The solvent may be a solution in which a water-soluble mineral is dissolved. When water-soluble minerals are dissolved in the solvent, the zeolite powder may be dispersed.
The water soluble mineral may be similar to or the same as a component contained in the zeolite powder. Although not limited thereto, the water-soluble mineral may be at least one selected from the group consisting of Si, A1, P, Ca, Na, Fe, Mg and K.
The fertilizer for crop cultivation according to the embodiment of the present invention can be more clearly defined by the method for producing the fertilizer for crop cultivation described below.
1 is a view schematically showing a manufacturing process of a crop cultivation fertilizer according to an embodiment of the present invention.
Method for producing a fertilizer for crop cultivation according to an embodiment of the present invention is a zeolite powder containing SiO 2 , Al 2 O 3 , P 2 O 5 , CaO, Na 2 O, Fe 2 O 3 , MgO and K 2 O Dispersing in a solvent. As described above, the particle size of the zeolite powder may be 80 mesh or less, or 100 to 350 mesh. In addition, the solvent may be a water-soluble solvent, but is not limited thereto, and may be water.
According to one embodiment of the present invention, the zeolite powder may be dispersed after dissolving at least one mineral selected from the group consisting of Si, A1, P, Ca, Na, Fe, Mg and K in a solvent.
The method of dissolving the mineral in the solvent is not particularly limited, but may be performed as follows.
First, as shown in FIG. 1, the
Although not limited thereto, for example, the
As shown in FIG. 1, the solvent in which the mineral is dissolved (W) may be extracted in a separate tank, and the extracted solvent (W) may be circulated back to the tank with the
According to one embodiment of the present invention, the finely divided
The
As the particle diameter of the zeolite powder is smaller, it may be more uniformly dispersed in a solvent, and thus may be easily absorbed into the crop.
Dispersing the
According to one embodiment of the present invention, a liquid crop cultivation fertilizer in which the fine zeolite powder is dispersed may be prepared.
The fertilizer for crop cultivation according to an embodiment of the present invention is a natural zeolite powder that is pulverized into fine particles and dispersed in an aqueous solution, and can be easily absorbed by the crop.
It also contains a large amount of minerals, which can restore the mineral balance of the soil in which the crop is cultivated. This can eliminate the cause of germs, improve the quality of the crop, and maintain freshness for a long time.
Fertilizer for crop cultivation according to an embodiment of the present invention can activate the germination, rooting, and growth of the crop. In addition, by quickly recovering roots, leaves, berries, etc. weakened by pesticide damage, cold water, etc., the yield can be greatly increased, the harvesting period can be extended, and the freshness can be extended, and the color of flowers and fruits can be clear and sugar can be increased. It has excellent immunity against pests, pesticides and heavy metals degrading ability, and fertilization efficiency can be increased to absorb more nutrients.
It also improves acidified soils due to the lack of essential minerals and pesticide damage to weakly alkaline soils. Its ionic action with organic fertilizers can significantly increase yields and prevent damage to crops and pests.
Hereinafter, the present invention will be described in more detail with reference to one embodiment of the present invention, but these are not intended to limit the scope of the present invention.
[Manufacturing Example]
Mordenite, arnosocle, clinoptilolite, quartz and montmorillonite were ground and immersed in a solvent. SiO 2 , Al 2 O 3 , P 2 O 5 , CaO, Na 2 O, Fe 2 O 3 , MgO and K 2 O contained in the solvent, a zeolite powder of 80 mesh was dispersed to prepare a fertilizer for growing crops. .
[Growth and soil improvement effect test]
The fertilizer for growing crops (hereinafter also referred to as 'liquid fertilizer') prepared in the production example was tested for the effects of lettuce growth and soil improvement. Specific test methods and results are as follows.
1) Test method
The test area per treatment zone was 12m 2 (3m × 4m), and the test zone arrangement was repeated three times by the ingot method. The specific conditions of the test spheres are shown in Table 1 below, and the treatment contents for each test zone are shown in Table 2 below.
2) Survey items and methods
(1) Growth characteristics: leaf length, leaf width, number of leaves, weekdays, quantity, leaf color (SPAD 502)
(2) Quantity quality: live weight, dry weight, water index
(3) Fertilizer damage and physiological disorders: occasional appearance survey during formal growing period
(4) Irradiation method: In each treatment area, the average individual was harvested 10 eyes by the naked eye, and the ground portion and weight were measured by electronic balance. Leaf weight was measured by the number and weight of leaves of more than 3cm width of lettuce leaves. The irrigation was not performed on the day of measurement to reduce the measurement error, and was measured immediately after harvesting to avoid weight loss with the lettuce. Dry weight was measured by drying at 70 ℃ for 2 days at room temperature in a sealed container.
3) Analysis of public soil
For soil chemical diagnosis, pH, EC, and OM were measured before and after the test, and the soil surface was rolled up to about 5cm in thickness for each test zone, and soil was collected from eight places to the depth of 10cm below and then dried in the laboratory. Soil general components were investigated according to the soil chemical analysis method of Rural Development Administration.
(1) pH: dilute the soil and distilled water by 5 times and stop for 10 minutes and measure with a vitreous electrode
(2) O.M .: measured by Tyurin method
(3) P 2 O 5 : measured by Lancaster method
(4) All Nitrogen: Kjeldahl Digestion Method
(5) Other salts: ICP analysis
4) Test result
(1) primary investigation
(2) secondary investigation
(3) lettuce individual weight
(4) Average quantity
(5) Changes in soil physicochemical properties before and after the test
[result]
This study was conducted to examine the effects of liquid fertilizer application on the growth and yield of lettuce. Treatment treatments included conventional cultivation and aerobic soil treatment, zebra foliar spray treatment, aerobic soil treatment and chubby foliar spray treatment of zeolite granules.
1) The growth characteristics of lettuce showed 0.5 ~ 0.7, 1.0 ~ 1.1cm increase in leaf weight treatment and aerobic soil treatment, and aerobic leaf spray treatment, respectively, compared with conventional cultivation. Seemed.
As for the number of leaves per week, the treatment group was slightly higher than the conventional cultivation in the first survey on the 26th day, but no statistical significance was found at the 5% significance level by Dancan's new multiple test. However, in the second survey, the number of leaf trees was 1.1 higher than that of conventional cultivation in the aerobic soil treatment + cultivation foliar spray treatment.
2) Chlorophyll measurement using SPAD 502 showed no difference among treatments at the first irradiation, but chlorophyll measurement at the second irradiation was higher than that of conventional cultivation in aerobic soil treatment + foliar foliar spray treatment. .
3) The weight and yield of lettuce were heavier in the treatment area than in the conventional cultivation. The average yield of lettuce was increased by 5% in the fertilized foliar spray treatment of liquid fertilizer and by 7% in the aerobic soil treatment + cultivated leaf spray application. The statistical results of the yield were found to be significant at the 5% significance level between the fertilized foliar spray treatment group, the aerobic soil treatment and the fertilizing foliar spray treatment group, and conventional cultivation.
4) The soil chemistry of the test package before the test was pH 6.3, higher than that of the general field soil 5.6, and the effective phosphate content was 222 mg / kg. After the test, the pH value and the substitutional Ca and Mg contents were slightly higher than those of conventional cultivation. However, other inorganic constituents had no effect and showed the same level as conventional cultivation. In this study, the treatment of the liquid fertilizer did not show any change in the conductivity of the soil, so the deterioration of the soil due to the application of the liquid fertilizer did not appear at all.
5) No damage or unusual physiological disturbances were observed in the application of liquid fertilizers during the cultivation period. There was no specific form or pathology of lettuce leaf by liquid fertilizer and it grew normally without the development of pests. In addition, liquid fertilizers produced no aversion or problems. In terms of quality, the surface of the leaves is shiny and has an excellent evaluation.
6) In conclusion, there was no damage of lettuce plants by the application of liquid fertilizers throughout the entire test period, and there were no unusual symptoms that could be judged as compared to conventional fertilizer foliar spray treatments compared to conventional cultivation. Did. After application, soil physicochemical properties did not deteriorate. Leaf length and leaf width of lettuce were increased in the treatment group of liquid fertilizer. The yield of lettuce was 5 ~ 7% increase in liquid fertilizer treatment compared to conventional cultivation.
The present invention is not limited by the above-described embodiments and the accompanying drawings, but is intended to be limited only by the appended claims. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.
10: zeolite powder of granulation 20: zeolite powder of particulate
W: solvent
Claims (11)
A solvent for dispersing the zeolite powder;
Fertilizer for crop cultivation comprising a.
The zeolite powder is a fertilizer for cultivating crops, which is formed by crushing mordenite, arnosocle, clinoptilolite and quartz.
The zeolite powder is fertilizer for crop cultivation having a particle size of 80 mesh or less.
The zeolite powder is fertilizer for growing crops having a particle size of 100 to 350 mesh.
The solvent is fertilizer for cultivating crops in which one or more minerals are selected from the group consisting of Si, Al, P, Ca, Na, Fe, Mg and K.
The zeolite powder has a particle size of 80 mesh or less fertilizer for cultivating crops.
Method for producing a crop fertilizer for dispersing the zeolite powder in the solvent after dissolving at least one mineral selected from the group consisting of Si, Al, P, Ca, Na, Fe, Mg and K in a solvent.
Method of producing a crop cultivation fertilizer for dispersing the zeolite powder in the solvent after immersing the pulverized mordenite, arnosocle, clinoptilolite and quartz in a solvent.
The zeolite powder and the solvent is a method of producing a fertilizer for crop cultivation is mixed in a ratio of 1: 3 to 1: 100.
Dispersing the zeolite powder in the solvent is a method of producing a fertilizer for crop cultivation is carried out by stirring the zeolite powder and the solvent and then aged at 30 to 40 ℃ for 8 to 15 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120000500A KR20130079794A (en) | 2012-01-03 | 2012-01-03 | Fertilizer for plant cultivation and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120000500A KR20130079794A (en) | 2012-01-03 | 2012-01-03 | Fertilizer for plant cultivation and method for manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20130079794A true KR20130079794A (en) | 2013-07-11 |
Family
ID=48992117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020120000500A KR20130079794A (en) | 2012-01-03 | 2012-01-03 | Fertilizer for plant cultivation and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20130079794A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150071090A (en) * | 2013-12-17 | 2015-06-26 | (주) 포스텍글로벌 | Fertilizer composition for direct sowing of rice |
| KR20200008879A (en) * | 2018-07-17 | 2020-01-29 | 주식회사 케이투 | process |
| US20210392894A1 (en) * | 2018-10-19 | 2021-12-23 | Uenme Global Pty Ltd | Use of composition as a growth promotant for plants |
-
2012
- 2012-01-03 KR KR1020120000500A patent/KR20130079794A/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150071090A (en) * | 2013-12-17 | 2015-06-26 | (주) 포스텍글로벌 | Fertilizer composition for direct sowing of rice |
| KR20200008879A (en) * | 2018-07-17 | 2020-01-29 | 주식회사 케이투 | process |
| US20210392894A1 (en) * | 2018-10-19 | 2021-12-23 | Uenme Global Pty Ltd | Use of composition as a growth promotant for plants |
| US11985977B2 (en) * | 2018-10-19 | 2024-05-21 | Uenme Global Pty. Ltd. | Use of composition as a growth promotant for plants |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Olaniyi et al. | Growth, fruit yield and nutritional quality of tomato varieties | |
| Milosevic et al. | The effect of zeolite, organic and inorganic fertilizers on soil chemical properties, growth and biomass yield of apple trees | |
| US20200010382A1 (en) | Multi-nutrient granular fertilizer compositions and methods of using the same | |
| El-Sayed et al. | Responses of productivity and quality of sweet potato to phosphorus fertilizer rates and application methods of the humic acid. | |
| Massawe et al. | Effects of different phosphorus fertilizers on rice (Oryza sativa L.) yield components and grain yields | |
| CN107484601A (en) | A kind of implantation methods for improving walnut volume increase | |
| US11192830B2 (en) | Seed coating to promote plant growth and method of increasing plant yield | |
| KR20130079794A (en) | Fertilizer for plant cultivation and method for manufacturing the same | |
| KR20120075061A (en) | High-calsium insam and a method for nature-friendly growing it | |
| Moyin-Jesu et al. | Comparative Evaluation of Different Organic Fertilizer Effects on Soil Fertility, Leaf Chemical Composition and Growth Performance of Coconut (Cocos nucifera L.) Seedlings | |
| CN103524195B (en) | Tobacco seedling growing fertilizer and preparation method thereof | |
| JP5401656B2 (en) | Clay heat treatment granular material | |
| Abou-Baker et al. | Appraisal of agriglass in promoting maize production under abiotic stress conditions | |
| CN104086277A (en) | Flowable water concentrate for wheat seed treatment | |
| Brito et al. | Organic lettuce, rye/vetch, and Swiss chard growth and nutrient uptake response to lime and horse manure compost | |
| CN103626609B (en) | A kind of nitre sulfenyl functional fertilizer | |
| RU2658376C1 (en) | Silicon fertilizer | |
| Abou-Baker et al. | Biozeolite for improving bean production under abiotic stress conditions | |
| Ishag | Effects of foliar micronutrient fertilizers on the yield of irrigated cotton on the vertisols of the Sudan Gezira | |
| Fazekas et al. | effect of foliar fertilizers applications on the nectar production of sunflower (Heliathus annuus L.) and on the foraging behaviour of honeybees (Apis mellifera L.) | |
| CN109279973A (en) | A kind of moderate-element Water soluble fertilizer and preparation method thereof | |
| Kumara et al. | Effect of nano-calcite foliar fertilizer on growth and yield of oryza sativa variety at 362 | |
| Barbosa et al. | Micronutrient application and residual effect on corn production in a no-tillage system | |
| RU2764468C1 (en) | Liquid complex fertiliser | |
| CN111592404B (en) | Soil remediation type multifunctional biofertilizer and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |