DD281110A5 - MEANS TO INCREASE THE EFFECTIVE USE OF WATER USES OF AGRICULTURAL CULTURAL PLANTS - Google Patents

Abstract

The invention relates to means for increasing the yield-effective use of water in the Prozesz the biological production of crops, especially cereals. The problem of improved water utilization is achieved by administering as active ingredient 2-amino-2-thiazoline of formula 1 to crops. Formula 1 {crop; Stresztoleranz; Water use; 2-amino-2-thiazoline; income}

Description

The invention relates to agents which are used in crops to increase the utilization of the production factor of water in the yield formation process.

Characteristic of the known technical solutions

The current state of the technical solutions is before i.'lem characterized in that with the help of antiperspirant chemicals, the Wasserausnutzu.ig should be improved. The water-saving effect of the effectors is achieved either by temporary stoma aperture reduction or by formation of water vapor billowy molecular films on sheets.

To stomataschließenden chemicals include Thenylphosphoi iumsalze (DD-PS 02149), Phenylquecksilberacetat (DD-PS 217975), carbamoyldimino-I ^ .S-thiodiazoles (DD-PS 103124), aliphatic hydroxy, epoxy and Ketomonocarbonsäuren (DD-PS 96002 , DD-PS 75420, DE-OS 1767829) and decenylsuccinic (DE-OS 1767829), arylsulfonates, N-benzylimidazoles (DD-PS 85224 and Chlorethanthionophosphonsäuredichlorid (DD-PS 85224).

Water-vapor-permeable films form prepolymers of known polymerizing classes, silicone oils, natural waxes and paraffin waxes, such as petroleum waxes with the addition of sorbitan monooleate as emulsifiers (DE-OS 1767100); the latter preparations at the same time stimulate plant growth ^ 'DE-OS 1767427).

Water-impermeable films also form alcohols with a chain length of C ,. "> is C ₂₂ in admixture with ethylene oxide plus oleic acid and silicon compounds (US 2333887, US 2923095).

The disadvantage of the drastically antiperspirant substance groups is that photosynthesis and biological production of substances are inhibited parallel to the transcription. Under climatic conditions with only temporary moderate dryness, the effect of photosynthesis due to effector effects often leads to yield depressions in plant production.

With abscisic acid (ABA) - a phytohormone - a sustained release improved water utilization is only achievable with 4 to 10 doses. At the same time a repeated ΑΒΑ-use leads to a restriction of the yield potential, so that no maximum yields can be achieved. 1 -Triacontanol effects (DE-OS 2722384) are linked to specific requirements.

In addition, self-production is costly.

Known phyto-effectors (Chlorcholinchlcrid, Ethrel), which are used to regulate growth, only sporadically and to an insufficient extent improve water utilization.

The low-yielding water-saving effects of dimethyl sulfoxide (DD-PS 126141, SU-PS 1017252) are faced with occupational hygiene disadvantages. The positive influence of ethanolamine (DD-PS 151104), biolipids (DD-217975) and certain fatty acids (DD-PS 226472) has certain environmental and genotype dependencies and is only detectable in dry stress.

Object of the invention

The aim of the invention is to develop means for increasing the utilization of water in the yield formation process of crops that increase productivity with different water supply. In addition, the funds should be toxicologically and environmentally harmless.

Explanation of the essence of the invention

The invention has for its object to develop for crops means that increase the utilization of water in the biological production of material with different water supply and thereby produktivitätsbewünstigenr ¹ act. The object is achieved in that means for yield-increasing the Wasserausn. tion of crops, especially of cereals with different water supply, in addition to conventional excipients and carriers 2-amino-2-thiazoline of formula 1 included

H ₂ C G-NH ₂ (Formal)

embodiments Example 1: Influence of the agent according to the invention on water utilization and biological production in winter wheat The effect of the agents according to the invention was determined in a small vessel experiment. The plant cultivation took place after Standard instructions for quartz sand (1.5 kg per vessel) to which the following nutrient quantities per vessel were mixed: 120 mg P

170mg Ca, 150mg K, 190mg N, 70mg Mg, 270μlFeCl ₃ solution (10%) and 270μlZAZ (a) solution according to HOAGLAND (1:20 dilution).

In each vessel 15 plants have been cultivated. The humidification of the substrate corresponded to 50% of the maximum Water capacity. The water consumed by evapotranspiration is repeated daily weighing the test vessels

determined and replaced after each weighing.

The water utilization (WUE) resulted from:

produced dry biomass Γ _g_ consumed water L kg

Table 1: Influence of the agent according to the invention on the utilization of water (WUE) and the production of substances (P) in winter wheat "Miras" in small vessels ¹¹

medium Dose ²¹ (mg / vessel) WUE (g.kg- ¹ ) WUE (g.kg Increase ³¹ - ') (rel.) P (mg / Gef.) P increase ³¹ (mg / Gef.) (Rel.) ATZ ⁴¹ PQA ^B) 1.5 2.0 4,69 4,39 0.51 0.21 (112) · (105) 1390 965 330 -95 (131) * (91) · EA ^w (standard) without (control) 1.5 4:34 4,18 0.16 (104) (100) 112Ί 1060 64 (106) (100)

! ^ Fourfold repetition.

2) spray application ai DC 12; Harvest to DC 21.

3) WUE and P increase determined as increase over control. The relative values refer to the control (without).

4) ATZ = 2-Am! No-2 - '. Hlazolln acc. Formula 1.

5) Phenylmercuberate (as antiperspirant

 6) EA monoethanolamine as standard.

aelsplel 2:

Influence of the inventive agent on water utilization in the Komertragsbildungsprozeß and grain yield at spring barley The influence of the active substances on the use of water in the production process and the grain yield of Spring barley was in the present example in Mitsche ·. Lich vessel experiment determined. The plant cultivation took place after Standard instructions: for vascular testing (7kg silica sand-soil mixture in the ratio 2: 1, moistening the soil substrate

to 50% of the usable water capacity, fertilizing the substrate with 1.6 g N [V2 of which top dressing], 0.84 g P, 1.48 g K [Vjdavon of head fertilization], 0.33 g Mg, 1 ml of 10% FaCl ₃ solution and micronutrients ).

The exploitation of the water in Ko. The training process was calculated as follows:

produced grain dry misse

it l kg

Evapotranspiration quantum in the growing season L kg From the results of Tables 1 and 2, it can be seen that the means according to the invention have a water utilization (WUE)

have increased significantly. The known antiperspirant compound phenylmercuric acetate (PQA) also caused an improvement in effectiveness, but at the expense of biomass formation (Table 1) or grain yield (Table 2).

Compared to the standard preparation monoethanolamine (EA) was by the inventive means a higher Water utilization reached, which also reflected in higher biomass or Kornerti ägen.

Table 2: Influence of the agent according to the invention on di °. Water utilization in grain production process (WUE) and grain dry matter (KTM) in spring barley, Salome 'in pot experiment

medium Dose ¹¹ (mg / vessel) WUE (g · kg " ¹ ) WUE increase * (g · kg " ¹ ) (rel.) (257) »(186) KTM (g / vessel) KTM increase "(g / vessel) (rel.) (176) · (-252) · ATZ ³¹ PQA 10 15 1.81 1.76 0.18 0.13 (100) 51.7 42.7 3.7 -5.3 (100) EA "(standard) without control 10 1.70 1.63 0.07 50.1 48.0 2.1

¹¹ spray application to DC 31; about 5-10 "'molar aqueous solution

²¹ WWE and grain dry matter increase determined as increase over control. Relative values refer to the standard preparation

Monoethanolamine (EA) ¹¹ ATZ = 2-amino-2-thiazoline according to formula 1 ⁴¹ phenylmercuric acetate (as antiperspirant) "EA = monoethanolamine (as standard) • α <0.05

From the results from Tables 1 and 2 it can be seen that the agent of the invention the water utilization (WUE)

increased significantly and led to increased biomass production (Table 1) and increased grain yields (Table 2).

Although the known antiperspirant substance phenylmercuric acetate (PQA) increased the water utilization, led

but to a significant reduction in productivity (Tab.1 and 2).

Compared to the standard preparation monoethanolamine (EA), the agent according to the invention caused 2-amino-2-thiazoline (ATZ)

a significantly improved water utilization, which led to higher biomass or grain yields.

Claims (2)

Agent for increasing the yield-yielding Wasserausnutzüng in the yield formation process of crops, especially of grain even with adequate water supply, characterized in that they contain as well as conventional excipients and carriers as active ingredient 2-amino-2-thiazoline of formula 1. H ₂ CN Il H ₀ G C-NH ₀ (Formal) ² / ^h S
Field of application of the invention