CA2024331A1 - Method stimulating the breakdown of high co contents in the atmosphere surrounding plant cultures in areas close to the soil - Google Patents

Abstract

Abstract A method is proposed wherein the receptivity of plants for the CO2 gas excessively available in the atmosphere is biocatalytically and/or bioenzymatically increased, by spraying the plants at least once during the growth period, thereby introducing through the water traces of CO2 and H2CO3,particularly in the root area of the plants, namely in a volume which is plant-specific and dependent on the composition of the soil and the water.

Description

7784 .~
202433~

METHOD STIMULATING THE ~REAKDOWN OF HIGH C2 CONTENTS IN
THE ATMOSPHERE SU MOUNDING PLANT CULTURES IN AREAS CLOSE
TO THE SOIL

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The invention relates to a method which intensifies the breakdown of increasQd Co2 contents in the atmosphere in areas close to the 80il.

It 1~ known that green plants, as a result of the process ~;`
known a~ photosynthe9is, can convert CO2 and H20 with the ~ ~ .. ..... ..
,~ h-lp of unlight and chlorophyll into carbohydrates According ~ ;
;;to esti~ tes, each year approxlmately 2?5 billion Tons o~ CO2 are tran-f~rr-d this way to organic compounds and an equivalent ~ ~`
àmount o~ ~ltal 2 i8 relea9ed. ,"j`,;~,.. ,`"`.
~3 ; On;th- other hand, lt i8 known that the CO2 concentratlon ;~
of~t~e atmo-phere caused by humans lncreases every year, namely by~l~pp~

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J \`'`~ ~ In spite of thls increased availability o~ CO2, forests ~,,~,'~'','.',,'r ~ dle and`o~ops are`widely exposed to reduced resistànce against ib~

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The causes of all that, which can not be explained here in detail, are mostly a result of the fact that various laws of nature are being ignored, such as the behavior of C02 in water and in the atmosphere and in the presence of an increased load of sulfuric and nitric acid and their di~turbing influence on a balanced C02 biological cycle, as well as on the efficiency of photosynthetic processes.

While it is already possible to effectively filter out certain amounts of exhaust gases on a small and large technical ~cale before they reach the atmosphere, corresponding po~lbiliti-s for the limination o~ C02 from eXhauat gases can not be foreseen for the moment.
' ~ ,~'' ;~ In order to slow down the increase of C02 in the ~t~osphere, a 8pecial tax on the producers of C02 in exhaust qases has been proposed, in order to compel them to take measures for the reduction of the C02 discharge. In order to reduce the excess of C02 in the atmosphere, in the ~SA it has been proposed to plant forests on a large scale, since it is known that young trees devolop a much more intense photosynthetic activity than fully grown trees. Also, American ` soientists have proposed to store such trees, in order not to reaotivata the C02 depots through oxidation. However, ooncrete solutions for the proble~ of C02 excess are praatically nowhere in sight.

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7784 ~ 2024~

It has been known for a long time that higher yields can be obtained when crops are treated with C02 (in greenhouse~) or ~-by ~praying with water containing C02 (outdoor cultures).
However, this was only a guestion o~ controlled lnfluence on the yield and the related improvQment of the economy of operation in ~
gardening and farming. ~ ;-.
~ut it i~ the ob~ect of this invention to create the ~ ~;
posslbility to counteract the increase of the C02 content in the atmosphere with ~imple and cost-effective means. ;~
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This ob~-ct is attalned by enhancing biocatalytically and/or nzymatloally the receptl~ity o~ plants, e~pecially of young plant- ~or the excessive C02 contained in the atmosphere, wlth r-spect to the nor~al specific roceptivity of plants, artioularly through watering the root area at least once durlng h! growth period, and by enriching the water used for this ~`purpo~- With traces o~ C02 and H2C03, 80 that when ~reachlng the root area, the water ha8 a predetermined content o~
peoiflc for the plant and correspondlng to the type o~
;no11 Up to ~aximum approximately O.S g/liter water and a content ~f'` `0~ H2C03 Up to maximum approxlmately 0.015 q/liter of water.
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~ hereby, ~t is particularly advantageous when primarily such plants or such areas where normally irrigation i~ neither usual not necessary, are watered at least once during the growth period Thus, the method o~ the invention is particularly ~uitable not only for plants in arid and dry areas, but offers also advantages in te~perate zonQs, as ~ar a~ soils whic~ are poor in humuD are concerned, as is widely the case in Boil~ which hav- ¦
b-en cultivated for long poriQds o~ time $he method of the inv-ntion is applicabl- to all plant~, 1ncluding tre--, bu~hes and the llk- in areas which are not ~cultlvated, a- well as for all crops in farming The larger the ;~ -cale on which th- ~ethod i8 appllea, the hlgher is its effect I on th~ breakdown o~ C02 excesse~ ln the atmosphere ~;~artlcularly ult-d are young plants whlch have any*ay a high `~ rate~o~ bio~aJ~ buildup ¦~ ~ CQmparatlve tests have shown that by applying the method of the lnventlon, the treated plants managed to extract from the ~ ~ -àt osphere an unbelievably high volume of C02 and to convert lt into blomass, in compari~on with the control group whose . .
~- plants were also ~atered, but with water which ha~ not been q~ enriohed wlth traces of C02 and N2C03 The oomparative ~te~ts ~howed without a doubt that the increase of biomass can ;~
~ .
not result directly from the availability of carbon in the ~ -4 .'; : ,'- ' ~
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7784 MP~ 202~

supplied carbon dioxide. Moreover, the obtained increase rates ~ ~
with the C-bin~ing overproduction can result only from the ~ ;
photosynthetic processes of the Co2 assimilation, which is activated by the Dethod of the invention. In this treatment, blocatalytic or bioenzymatic or similar effects occur, which trigger very high multiplication factors - with respect to the ;~
C2 ~ ~or the plant-specific C02 receptivity.

In order to achieve this success, it i8 essential to water particularly the root area, since through the C02 physically bound in the water a preselected rate to the chemically ~ound H2C03 is created. This carbonic acid and its dissociation products, especi~lly when acting through the roots, have a partlcularly ~trong lnfluence on the metabolic processes of the plant, particularly the process of photosynthesis, whereby the . , -biocatalytical and bioenzymatic influen¢es take effect in the ~;
~de~aribed manner, even if at the moment not all details of these physloal and/or chemical phenomena in plant~ can be explained clentifically.
,:

Besides, it can be proven tbat C02 and H2C03 supplied ~; with the spraying water in the root area has a favorable ..;
influence on root growth, concerning the length of the roots, as well as the development of fine roots. This way, in addition to -:-the ~tlmulation of photosynthesis, the 8011 volume nurturing the plant is also clearly increased~ A further advantage results ~rom the faot that the presence of H2C03 ln the ~praylng : :",: ' , ,, .:

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7784 M~ oz~3~

water makes the ~inerals present in the ~oil or fed to the ~oil more available to the plants, due to ionization.

~ his way, as far as an artlficial fertiliz?tion i8 necessary, it is possible to obtain the 6ame gro~th results wlth a ¢onsiderably ~maller amount of fertilizers than the heretofore-used fertil$zer supplement~, respectively to utilize them to a greater extent.

Since due to better root growth and to the biocatalytic or bioenzymatic sti~Ulation o~ the photosynthetic activity of the plant, the plant growth in general i8 much stronger, the treated plant~ are also ~ore resistant to disease and pe~ts. Therefore, pestloides or similar treating agents - if at all necessary - , r- reguired in considerably smaller amounts.

` ~ The supply o~ C02 con~ists practically only o~ traces, BO
`~;that the expenditure ~or C02 i~ hardly worth mentioning.
Thereby~ the problem o~ smaller or larger losses o~ carbon dioxide during the i~pregnation o~ the water with C02 does not r-ally ~atter ~o much. ~hus, the water can be iopregnated cont~nuously or not, with a gas pressure lower than the one of ~:
~ the oncoming water flow, as i8 thQ case in the impregnation s - d~nice commercially known under the trademark "Carborainn, or ,. ,~
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also with a slightly hiqher pressure of the gas with respect to tha water pressure, 80 that the impregnating aevices can be used very economically. -~

During the root watering with C02-containing water, the C2 content is suitably monitored and kept within narrow --llmits. This because te~ts have shown that the photosynthetic process and th~ root growth react sensitively even to minimal increasea over the plant-specific optimal content o~ C02, and thi~ reaction i~ negative. ~ -;

Prèferably, the C02 enrichment of the water is controlled o that th- C02 content i~ kept between 0.05 ~nd 0.5 g/liter o~ water. When the plant-speci~ic dependency Or root growth on th- C02 content o~ the spraying water is known or can be ~a-lly establlshed, the upper limit o~ the ~C02 and H2C03 in the water can be controlled depending on this soil composition o that the lncr~ase in root growth reaches or slightly ~ :
; ,~urpassies a m~ximum value.
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;During the continuous monitoring of the impregnation, the v~
~C0~ upply in the impregnation zone can be continuously and ' 1;
; steplessly controlled by monitoring the plant-~pecific pH level, `~
which is to be kept within narrow limit6, optimally ad~u6ted to positlve, as well as negative ionization products in the water.
; T~e pH-value can thereby be set within a range between 5.5 and ~ .. :; .
7.S, - preferably 6.0 and 7.0 -. Thereby it ha~ to be in6ured ..
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7784 M~ Z024~

that no nutrient salts as such, but only their ionization products, are available to the plants. The ionization o~ such nutrient salts depends on the pH-value. In the method of the lnvention, the carbonic acid contributes to the ionization of all important nutrients and trace elements, by makinq available th- there~or required H~ ions. With the remaining dissooiation forms, it delivers also important molecules and elements ~or the entire plant synthesi~, up to the assimilation product. The processes can be al~o favorably influenced by adding to th- water small dose~ of one or se~eral trace elements from the group Mn, Mq, Zn and Fe.

~ .
-~ Amerioan science defines the C02 exchange of plants a~
CER, i.e. Carbondloxide Exchange Rate. Since the function o~
-~ controlling the C02 ex¢hange factor is not known, a short ?~ xplanation i8 ln order:

On the inner ~tomata membrane, there is ~ film of water `~ ~` vapors which ef~ectuates the generally known physiological plant ao~ivity (vaporization effect). This vapor film has to be pa-s-d by the carbon dioxide in order for it to penetrate inside the plant to set in motion the photosynthetic actions. As `~
~lready mentioned, here act the laws of dissolution in water of ~` ` tke carbon dioxide, which are not the same with the ones in the 3,`~ ~ atmo~phere. Aooording thereto, carbonio acid , H2C03 and ~ its di~sooiation forms, namely ohemioally dis~olved, result in a `~ -8-.

7784 l 2024~
certain proportion, while the carbon dioxide remains physically bound, thereby having a buffer effect. Due to the low temperature of the vapor film the recepti~ity and the binding of the physically di9solved carbon dioxide are fayored. If at this moment higher C02 requirements are triggered, by activating the photosynthesis through trace elements, ~hich include also the dissociation forms of the carbonic aci~, at the transfer point a chemical underconcentration occurs. By increasing this -~
concentration drop, the absorption of carbonic acid, respectively of its dis~ociation forms, i5 accelerated. This way, al~o the CER-factor is controllable through the plant.
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With th~ improved C02 irrigation, it is al60 possible to ~ertilize. Theroby, only nutrient which are in short supply in the 8011 are lntroduced. Under certain circumstances, this can be only a ~ingle nutrient or trace element , when all the other ` ~;
nutrients are present. In these cases, only small amounts of C0~ are necessary in order to attain the preselected ideal pH-value on a short-term basis. In some case~, it can be e~peoially advantageous when the water impregnated this way with C2 i~ continuously made available to the receptive organs o~ -thQ plant, particularly in the rhizogenic area. This can be done with the known aboveground or underground drip irrigation systems. Thereby, the water supply to the root area iB more or 1Q88 automatically controlled by the plant's water ~ ;
re~lirements. It has to be emphasized that here too the amount f C2 supplied per liter o~ water is continuously and ~inely steplessly ad~usted, depending on the water composition.
~. , ' 2024~
77~4 MR

In order to carry out the method, the basic amount o~ Co2 can be set roughly depending on the pressure or the amount of the oncoming water flow , while the fine ad~ustment o~ the C02 ontent takes place ln tho aforedescribed manner, depending on the composition o~ the water Fro~ p~t-nt literltur-, p~rticul~rly from th pat-nt~ o~ th-applicant, it results that impregnation device~ capable of high-procision dosage of the carbon dioxide in water are already on the market, e g "Carborain" (see "Lanascape ~ Irrigation, July 1989, Page 118) With this devices, it ie perfectly ¦ -po~-ibl- to achi-v- a dose setting with a preci~ion of loO
`~mg/llter ;

ln t-chnical publications o~ varioue fields where high ~preci-lon i- particularly important, e g in wine procQssing, ~the devic-- can reaah a precieion not ~nown hereto~ore Thu~, a- already proven by science, the reguir~ments would b- met with ~' ~he devices already available on the market However, since the ~-tructure of the soil and the water composition can never be ~precisely followed, an overdose or an underdose of C02 in the water can alway~ result, even with high precision Hereby, the values can ~e distorted to such an extent, that for in~tance ~ negative ef~ects can occur, due to overconcentration I~ it is ; taken lnto aaoount that acoording to the invention a multiplication ~actor between 10 and 100 -, ' ' ~

7784 Mh ~ ~4 intervenes in the proportioning of the applied water-impregnated~ -~
carbon dioxide and the co2 bound by the plant, minor negative effects are also disproportionately ~trongly increased over the multiplication factor. For this reason, the invention sets as a precondition that not only has the impregnation to be carried out with high precision, but also the water guality has ¢onstantly to be monitored through precision ad~ustment , so ,~.. . .
that sources of errors are minimized, and, as a result, the ~-highest possible C02 absorpt~on from the atmosphere takes place. ;
", '", Partlcularly important i8 for instance the content of ionlzable mlnerals and trace elements in the water. These can ~ -bu~fer a ~raction of the impregnated carbon dioxide , which makes the possibility to reach the correct set value of C02 combinatlon questionable.
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At the same timo, the water has a varlable pH-value, whlch agaln i8 influenced by the supplied C02 and the thereby triggered chemical blnding o~ H2C03. For thls reason, the lnv-ntion provides for the continuous ad~ustment o~ the impregnation device to the quality variatlons of the water, `~
precluding the danger o~ an over- or underdose of C02. As a --rule, the p~-value o~ the water is only minimally lowered, whereby the composit~on or quality of the water is taken lnto account to a high degree. The get value ~or the base/acid 7784 r~`
2024~3~
content of the water ig suitably set depending on the ~peci~ic needs of the crops for ionization products available to the plant and/or also the 80il ~ 8 content of nutrient salt~ which are supposed to be made available to the plant through ionization.
In the meantime, plenty of research has been conducted ln connection with the 8pecific requirements of C02 - H2C03 ln plant8. Al80, there should be no difficulty in establish~ng the nutrlent contents of the 80il- Each one of these established values can be involved separately or together in the deteroination of the set value. In order to take into account the composition of the used water, the acid/base-value of the impregnated water can be continuously measured. Already when v-ry small deviation from a preselected set value occur, a etepping motor i~ actuated, which modifies the cross ~ection o~
; the ga~ passago outlet of a supply nozzle or a supply throttle, through whloh the C02 gas is delivered to the impregnation one.
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The control possibillties in this case are o~ such pre4i-lon, that even variations in the composition and guality of water coming from the ~ame water source could be pic~ed and .. .
compensated in the influence on the ad~ustment of the desired ~ ;
base/acid-value.

If from the 6tart, the water and the soil do not contain the suffioient ioni~able oomponents required by the plant. the laoking minerals and/or traae elements can be added to the water in cert~in doses.
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2024~

An important side effect of the application of the new method - at least ~n edible crops - is that as a proven result of the treatment of the plant in accordance with the method of the invention, the plants are enabled to break down with preference the excess of nitrogen compounds in the biomass, ~o that the load of nitrogen compounds in the food is considerably lowered, which oliminates expensive procedures aimed at the ~li~ination of excessive compounds fro~ foods ~see Telefax copy, Quallty Seal of the Danish State Plant Research).
~'", '.'''''".'' Further it i~ known that thereby not only harmful processes due to high nitrate contents can be avoided, but at the same tl~e th- formation of vitamins is sti~ulated and the external plant ti~su~ trengthened, 80 that various pests can not penetrate this strengthened surface.
' -Th- invention will be even easler to understand with the id Or th- attached drawing and the therein represented o~bodiment example.
`;, ~ " :''' ~ Fig. 1 shows a device for perfor~ing the method, while ;, ..
~ Flg. 2 illustrates the pendulations of the actual value with ~ `
I ~
respect to the desired set value.

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7784 ~. 20~4.~3~ : ~

Figure 1 6hows a water-supply pipe 1, through which the spraying water ls continuously supplied to the C02 impregnation zone. The impregnation zone i8 represQnted in Fig.
1 by an impregnation device 2. This can be for instance the already mentioned impregnation device known under the trademark HCarborain". The device i8 connected via pipe 3 with a C02 pres~ure gas source which i8 not shown in the drawing, indicated by arrow 4. In pipe 3, a throttle valve o$ supply nozzle 5 with variable throttle- or nozzle cross section is provided. The ad~u~tment o~ the ¢ross section take~ place by means o~ a st-pping motor 6, which i8 controlled via line 7 by a control ~;
unit 8. This ha~ an inlet 9 connected with a jrobe 11 in the plp- 1. The probe can be for instance a pH--lectrodo. A
*urt~er inlet 10 is provided for the manual ad~ustment o$ the ~et-value selection. Detailed indications as to how to e~takll-h the set value have been given previously. It su~fices to polnt out that the sQt value can be determined plant-specifically and depending on the ~oil composition.

The probe 11 indicates already the smallest changes in the , .
p~-value o~ the impregnated water. This way, the control unit reacts sensitively wlth control signals $or the stepping motor, -,~hl¢h continuously and eensitively controls the cros~ section o~
the gas ~low through the valve or throttle 5.

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Thereby, the ad~ustment o~ the set value take~ place ln the manner shown ~n Fig 2 through the hunting of the actual value w~th respect to the set value The hunting process take~ place quickly and with high precision ',,',~

At 16, a quantity-measuring in~trument can be provided in -pipe 1, which vla the control unit 8 actuates a valve 15 for roughly controlling the gas supply ,' ::'',;
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A reaction ~egment can follow downstream of the impregnation ;~
~one, which provides su~icient dwelling time to the water i-pregnated with C02 bubbles, whereby the volume of' eventual ga~ bubble- can b- considerably reduc-d through gas absorption ,',~'-Du- to the low C02 contents, it is also posslblQ to ..
pr-gnat- only a fraotlon o~ th- requirod wat-r flow and then to ~lX lt wlth the remalning water, namely 80 that th resulting m1Y d wat-r a--ume- th- deslred -t valu- o~ C02 Thl~ way, -~v-ral hundred thousand llter o~ water per hour can be prepared f~rt irrigation, wlth lmple means and by preclsely observing the -~ pr~elected value ~or the C02 content The f~ollowing test results are give here as examples ~ -~, ~, ., , ; . , :, . , ~ -15~

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2024t~-A~..
1. Winter wheat (large-scale test) Soil: medium heavy After the 6eeds oprout, at intervals of 2 to 3 weeks, 300 liter water/ha are sprayed five times. As far as required, the u~ual fungioides in the normally used doses have been admixed to the spraying water. The gross C02 amount used for water l-pregnation was of approx. l.S g/liter. Due to temperature and qpraying los~es, approximately 0.~ g/liter reached the plant overground.
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Result:

In th- tradltional treatment, the oorn yield was o~ 87.8 dt/ha, the straw yield of 87.8 dt/ha and thereby the C-content ~lu the total bioma~- of 7480.56/~g/ha. On th- ~urface~ treated ~c~ordlng to the method of the invention, the corn yield was of 9~.7 dt/ha and 92.7 dt/ha for th- atraw yleld, or a C-content in ~he b1omas~ of 7898.04 kg/ha. Th- additlonal yield of carbon in blomass equaled 417.48 kg/ha. In comparison thereto, the o~rbon oontent origlnally introduced into the spraying water by 2.2S Xg/haj equaled only 0.61 Xg. The content of ' 417.48 kg carbon corresponds to 1531 kg~ha CO2, wh~ch is the ~ ,,, ~, ~;d~fferencè ~etween th'e amount taken out o~ the atmosphere by ~plants treated wlth the method of the invention and the amount ta~en out by untreated plants. This corresponds to a faator of :
~C84 with respeot to the C02 content in the ~praying water.

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In this case the spraying took place primarily through overground plant organs. In splte of the positive results with ~-respect to the additional C02-binding from the atmosphere, the use of plant protection agents could ~e reduced by half.
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2. Fodder beets:
Soll: medium heavy After the beets had developQd a lea~ length o~ approximately 0-15 cm, 300 m3 of water/ha vere sprayed. The C02 content of the water was set to 0.25 ~g/m3. The C02 values measured ln the root area were averagely lower by only approx. 0.01 to 0.02 g/llt-r than th- initial ~alues. In compari-on thereto, a ~ield having the same surface vas ~prayed with the same amount o~ wat-r, but w~thout C02.

Wlth the normal water, the beets yield was 717 dt/ha, the lea~ yl-ld ~a~ ~75 dt/ha and tbe oarbon content ln the bioma~
wa- 6294 kg~ha. ~he value~ for the field treated according to th ~ m ~ntion wore 900 dt/ha for beet~, 600 dt/ha for the av-a, and for the carbon 7950 kg. 8ince pure C02 conta$ns pproxlmately 27% carbon, the C-amount supplied through the ater equal~ approximately 20.5 kg. In the supplemental yield 0~ the treated plant~ a supplemental yield of 1556 kg carbon in the plant~ was found. Consequently~ these plants have absorbed 6072 kg/ha more C02 fro~ the 6urrounding atmo~phere, than the untreated plants. Considering the used amount of C02 a ~ultlplication factor of approximately 60 results~

2024~33~
According to existing data, in the USA approximately 20 million hectar of farm land are presently artiflcially lrrigated If only these surfaces were treated according to the example o~ the rodder beet ana only a 25% surplus o~ biomass ~as obtained this way, approximatQly 120 million Tons of C02 from the atmosphere would be incorporated ln the plants If the method were extended also to fields a~ yet untreated, an lnoomparably higher nu~ber would result ¦ ~ -Thereby, one has al~o to take into account the additional ben-fits resulting for crops due to the ~upplementary yields and the economy of fertilizers and chemical treatment agents, as w-ll a- from th- lessening of other cological problems (the loading of the ground water, nitrate content of edible plants) A eon~iderable economic benefit result due to the lnvention ~from th- lnor-a~e ln crop yields in comparison to all prevlous ;~
;;~ethod~ If thi- bene~iclal eeonomic effect is used for the oxidatlon Or earbon, C02 1~ formed agaln , whlch bowe~er 18 ~`~fre- of N0x and S02 Thls means that the natural C02 cycle not dlsturbed, 1 - through the raln C02 can be returned to ~ ~
th- oil a~ ln past centurles, vla in~ectlon effect ~ ~ ;

For the purposes of th- invention, C02 coming ~rom exhaust ~a~es, for lnstance from internal-combustion englnes, can be ~;~
usQd~ as far as lt is possible to oapture ~uch gas in sufficient volume and to introduoe them into water tanks -~
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The factor by which the plants extract an additional C02 . -~ .
volume from the atmosphere with respect to the C02 introduced into the sprayinq water, can be thousandfold, depending on the type of plant. ,~ ~.

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Claims (12)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. Method for stimulating the breakdown of high CO2 contents in the atmosphere surrounding plant cultures in areas close to the ground, characterized in that the receptivity of plants, particularly younger plants, for the CO2 gas contained in excess in the atmosphere is biocatalytically and/or enzymatically increased with respect to the normal plant-specific receptivity, by irrigating the plants above ground or underground at least once during their growth period and by enriching the used water with traces of CO2 and H2CO3 so that when the water reaches the reception organs, particularly the roots, it has an optimal preselected content of CO2, respectively H2CO3 or their dissociation forms which is specific for the plant and dependent on the composition of soil and water.

a. Method according to Claim 1, characterized in that primarily also such plants or areas, where normally irrigation is not usual nor required for climatic reasons, are watered at least once during their growth period.

3. Method according to Claims 1 or 2, characterized in that depending on its quality, i.e. its content of ionizable minerals and on the soil composition, to the water one or several trace elements, particularly of the group Mn, Mg, Zn and Fe are added, in order to stimulate the photosynthesis.

4. Method according to one of the Claims 1 to 3, characterized in that the enrichment of the water with CO2 is so controlled that, when reaching the above ground or underground receptive organs of the plant, the water has a quantitative content of CO2 which allows an optimal multiplication factor of the supplied carbon dioxide to be received and stored in the plant.

5. Method according to one of the Claims 1 to 4, characterized in that the adjustment of the preselected CO2 content of the water at the point where it reaches the plant's receptive organs particularly the root area, takes place within a CO2 impregnation zone, depending on the pressure and the chemical composition of the water.

6. Method according to Claims 1 to 5, characterized in that the upper limit of the content of CO2 and H2CO3 in the water at the point where it reaches the root area is set based on the soil composition to plant-specific value, wherein the increase in root growth reaches or slightly surpasses a maximum value.

7. Method for increasing the crop yield in outdoor plant cultivation, particularly in light soils or in soils in dry or arid areas, characterized in that the receptivity of the plants for CO2 from the atmosphere and for nutrients is biocatalytically and/or bioenzymatically stimulated, by overground spraying, but particularly in the root area, at least once, several times or constantly during the growth stage of the plants and that the water used for spraying is enriched with traces of CO2 and H2CO3, namely so that the water is continuously passed through a CO2 impregnation zone and that the CO2 gas supply is continuously and steplessly adjusted via a narrowly limited, optimal, plant-specific pH-value to the positive as well as negative ionization products in the water.

8. Method according to Claim 7, characterized in that the content of CO2 per liter of water is adjusted to maximum 0.5 g, preferably to a value of 0.05 - 0.3 g per liter.

9. Method according to Claim 7 or 8, characterized in that the pH-value is being kept within narrow limits at a value between 5.5 and 7.5, preferably between 6.0 and 7Ø

10. Method according to Claim 7, characterized in that the acid-base value of the water enriched with traces of CO2 is continuously measured and at the slightest deviation from a plant-specific set value a stepping motor is actuated which changes the modifiable cross section of the gas outlet of a supply nozzle or a throttle device, through which the CO2 is supplied to the impregnation zone.

11. Method according to Claim 7, characterized in that CO2 gas supply to the impregnation zone is first roughly adjusted to the pressure of the water flow coming into the impregnation zone, before the precision adjustment takes automatically place via the plant-specific pH-value.

12. Method according to Claims 1 to 11, characterized in that with the precisely controlled supply of CO2, H2CO3 with the biocatalytic processes triggered for multiplied CO2-binding in the excessively stored nutrients, particularly nitrate components are intensively broken down.