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Drought-resisting and water-holding seed coating formulation containing gamma-polyglutamic acid and preparation method thereof

A technology of polyglutamic acid and insecticide, which is applied in the field of seed treatment, can solve the problems of low seed germination rate, abnormal germination, and waste of water resources in arid areas, so as to ensure the rooting and germination of crops, increase the effective water content, The effect of preventing pests and diseases

Active Publication Date: 2013-04-24
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the arid desert area, water is very scarce, but more than 80% of the soil moisture scattered around the plant roots is lost in the form of evaporation and infiltration, and only about 10% of the water is absorbed by the roots, which not only caused the shortage of water resources The serious waste of the seeds has also led to a very low seed germination rate in arid areas or even failure to germinate normally. Drought-resistant and water-retaining seed coating agents can absorb hundreds or even thousands of times of water, so it is very necessary for seed coatings in arid areas
In the past, the coating agent was difficult to be degraded in the soil, and it was easy to cause environmental pollution. Therefore, the environmentally friendly seed coating agent has been a subject of research.

Method used

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  • Drought-resisting and water-holding seed coating formulation containing gamma-polyglutamic acid and preparation method thereof
  • Drought-resisting and water-holding seed coating formulation containing gamma-polyglutamic acid and preparation method thereof
  • Drought-resisting and water-holding seed coating formulation containing gamma-polyglutamic acid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Example 1: Drought Resistant Maize Seed Coating.

[0043] The drought-resistant corn seed coating is composed of the following raw materials in mass percentage:

[0044] γ-polyglutamic acid 0.2%, polyacrylamide 2%, polyethylene glycol octylphenyl ether 1%, manganese sulfate 0.5%, zinc sulfate 0.1%, calcium carbonate 0.1%, copper sulfate 0.01%, triadimefon 1%, carbendazim 3%, carbofuran 2%, red pigment 0.5%, and the rest is water.

[0045] Add the above seed coating raw materials into a mixer and mix well to prepare the corn seed coating agent. When coating the seeds, 20 parts by mass of corn seeds and 1 part by mass of the seed coating agent were prepared into coated corn seeds in a granulator.

[0046] The prepared gamma-polyglutamic acid coated seeds were carried out in a field test in July-August 2010, and the uncoated corn seeds (CK) were used as a control test. 100 seeds were sown each, and the number of seedlings and the rate of emergence were listed below Table...

Embodiment 2

[0050] Example 2: Drought Resistant Cotton Seed Coating.

[0051] The drought-resistant cotton seed coating is composed of the following raw materials in mass percentage:

[0052] Gamma-polyglutamic acid sodium salt 0.8%, polyacrylamide 2%, polyoxyethylene alkyl ether 2%, manganese sulfate 0.1%, zinc sulfate 0.1%, ferrous sulfate 0.1%, triadimefon 2%, enemy grams Pine 3%, carbofuran 3%, red pigment 0.6%, and the rest is water.

[0053] Add the above seed coating raw materials into a mixer and mix well to make a cotton seed coating agent. The cotton seed of 25 mass parts and the seed coating agent of 1 mass part are made cotton coated seed in pelletizer.

[0054] The prepared gamma-polyglutamic acid coated seeds were carried out in a field test in April-May, 2010, and a control test was done with uncoated cotton seeds (CK). Table 2.

[0055] Table 2 Effect of γ-PGA seed coating agent on cotton seedling emergence rate

[0056]

[0057] As can be seen from the data in Tab...

Embodiment 3

[0058] Example 3: Drought-resistant rapeseed coating.

[0059] The drought-resistant rapeseed coating is composed of the following raw materials in mass percentage:

[0060] γ-polyglutamic acid wettable powder 2% (which contains 20% (w / w) γ-polyglutamic acid), gum arabic 5%, polyethylene glycol octyl phenyl ether 0.6%, manganese sulfate 0.05 %, zinc sulfate 0.15%, molybdenum sulfate 0.1%, copper sulfate 0.01%, chlorothalonil 3%, imidacloprid 0.5%, red pigment 0.9%, and the rest is water.

[0061] Add the above seed coating raw materials into a mixer and mix thoroughly to prepare a rapeseed coating agent. 30 parts by mass of rapeseed and 1 part by mass of the seed coating agent are used in a coating machine to make coated rapeseed seeds.

[0062] The experiment was carried out in Datang Village, Kunshan City in October 2010. Taking common rapeseed (CK) as a control, it was sown on October 15, 2010, transplanted on November 15, 2010, and the seedling quality was investigated ...

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Abstract

The invention discloses a drought-resisting and water-holding seed coating formulation containing gamma-polyglutamic acid, and the seed coating formulation provided by the invention comprises the following components in percentage by weight: 0.02-1 percent of gamma-polyglutamic acid, 0.5-5 percent of binding agent, 0.05-2 percent of surfactant, 0.2-6 percent of trace element, 0.5-9 percent of sterilizing agent, 0.2-5 percent of insecticide, 0.5-1.2 percent of warning colour and the balance of water. The seed coating formulation has a high-activity biological function, has the functions of promoting rooting and sprouting, improving soil, holding water, increasing fertility and efficiency, chelating toxic heavy metals and the like, and is suitable for vegetable varieties such as tomatoes, green vegetables, cucumbers, hot pepper, rape and the like, commercial crops such as cotton, soybean and the like, and grain crops such as wheat, corn and the like.

Description

technical field [0001] The invention belongs to the field of seed treatment application technology, in particular to a drought-resistant and water-retaining seed coating agent containing γ-polyglutamic acid and a preparation method thereof. Background technique [0002] Seed coating agent is a kind of preparation used for seed coating and has film-forming properties. It can not only standardize improved varieties, but also have multiple functions such as plant protection. Its advantages are: (1) It expands and breathes in the soil without being dissolved, so that the seeds can germinate normally, and the pesticides and fertilizers can be released slowly. It can kill underground pests, prevent and control seed germs, increase the germination rate of seeds, and reduce the use of seeds. quantity and improve crop varieties. The seed coating agent is close to the seeds, with concentrated medicinal power and high utilization rate, so it saves medicine, labor and seeds compared wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/02A01N51/00A01N43/653A01N47/18A01N37/34A01N47/22A01P3/00A01P7/04C05G3/60
Inventor 徐虹许宗奇冯小海欧阳平凯
Owner NANJING UNIV OF TECH
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