the bio - fertilizer composition of the present invention comprises a symbiotic organism , which is selected from the group consisting of rhizoctonia sp . ( bcrc930076 ) and rhizoctonia sp . ( bcrc930077 ); a growth substance ; and a medium , which is used to mix and evenly disperse the symbiotic organisms and the growth substance . the symbiotic organisms are rhizoctonia spp . purified and isolated from the wild grown orchid roots . one colony of rhizoctonia sp ., which has been deposited in firdi ( food industry research and development institute taiwan , 331 shih - pin road , hsinchu , taiwan 300 ) with a deposit number of bcrc0930076 , are pale yellow with cotton fibers in the front sides , and the colors of hyphae are also pale yellow . the widths of hyphae are between 3 . 5 - 4 . 5 mm , in average of 3 . 9 mm . the lengths of bead - like cells are between 17 - 30 mm , in average of 23 . 5 mm , and the widths are between 10 - 12 mm , in average of 11 . 1 mm . the rate of hyphal elongation is 10 - 11 mm per day . there are two nuclei in one cell . another colony of rhizoctonia sp ., which has been deposited in firdi with a deposit number of bcrc0930077 , are white yellow with cotton fibers in the front sides , and the colors of hyphae are also white yellow . the widths of hyphae are between 4 - 5 mm , in average of 4 . 34 mm . the lengths of bead - like cells are between 14 - 25 mm , in average of 19 . 4 mm , and the widths are between 9 . 6 - 14 mm , in average of 11 . 9 mm . the rate of hyphal elongation is 10 - 11 mm per day . there are two nuclei in one cell . the above - identified colonies were deposited on dec . 15 , 2004 . any known plant growth substance ( pgs ) which promotes orchid growth and does not interfere with the existence of orchid symbiotic organism can be applied in the present invention and is not limited . the plant growth substances include natural plant hormones and artificially synthesized plant growth regulators . the natural plant hormones include auxins , gibberellins , cytokines , abscisic acid , ethylene , brassinosteroids , jasmonate and salicylates and so on , not restricted to the list here . the plant growth regulators are synthesized by chemical methods which are organics similar to the molecular structures or physiological activities of natural plant hormones . examples are choline chloride , inositol , lysine # 3 root inducer and aminosong solution , and are not limited to this list . on the other hand , as a medium mentioned above , any medium used to thoroughly mix and evenly disperse the symbiotic organisms and the growth substances can be applied in the present invention to bring into functions , no particular restriction is applied in the invention . examples include peat moss , sphagnum mosses , coconut fiber and rotting logs , and are not limited to the list here . the mixing ratio of symbiotic organisms and plant growth substances of the bio - fertilizer composition in the invention can be adjusted according to the spreading ways , amount , and different growth stages of orchid species . there is no particular restriction . people skilled in the art of the present invention also understand from this explanation that the bio - fertilizer composition can be produced in either solid forms or in liquid forms . on the other hand , people skilled in the art also comprehend that the symbiotic organism of the bio - fertilizer composition can be applied directly into the culture media of orchid seed in test tubes during seed germination without plant growth substance but with simple medium ( e . g . oat meal agar medium ) to promote the germination . besides , the bio - fertilizer composition can further comprises a nutrient solution to provide a better growth promotion effect . any nutrient solution provides nutrients for orchid plants and enhances the growth can be applied in the present invention without particular restriction . fruit and vegetable juices ( for instance , v8 juice ), gy nutrient solution ( liquid glucose - yeast extract media ), cm nutrient solution ( glucose - yeast extract - malt extract ) and food grade beverage ( for instance , milk ) are examples but not limited . the present invention is further explained in the following examples . the present invention disclosed above is not limited by these examples . the present invention may be altered or modified and all such variations are within the scope and spirit of the present invention . orchids are observed after slicing of each orchid plant under microscope , and the roots suspected to be infected with orchid symbiotic organisms are sampled to isolate the microbes from the infected roots . first of all , the roots are washed , sonicated with 1 % sodium hypochlorite for 15 to 20 min for disinfection , then washed with sterile distilled water three times . the roots are cut into pieces , placed in separation culture media , and incubated in the dark at 25 ° c . for 3 to 4 days till mycelia appear . single hypha picked from mycelium is subcultured into potato dextrose agar ( pda ) plate ( 39 g / l of difco potato dextrose agar ) for colony purification . purification of hypha is determined according to the growth condition of hypha , and the non - purified hypha is picked with a needle , incubated in a fresh pda plate till colonies are purified . purified colonies are placed into test tubes respectively and stored at 4 ° c . the purified symbiotic organisms are identified , termed rhizoctonia sp . ma and rhizoctonia sp . mb by firdi ( taiwan , roc ), and deposited there on dec . 15 , 2004 . the deposit number is assigned to be bcrc930076 and bcrc930077 , respectively . both rhizoctonia sp . ma and rhizoctonia sp . mb are analyzed for their pathogenicities to affirm their danger to plants . sterilized peat mosses or soil - free media are used as the growing media for testing plants . first of all , the surfaces of seeds are disinfected with sodium hypochlorite , these seeds includ crop blocks such as mung beans ( bean family ), cucumbers ( calabash family ), radishes ( crucifer family ) or rice and so on . these disinfected seeds are sowed directly , or germinated in advance , and placed into the media containing purified orchids symbiotic organisms , in the ratio of 0 . 5 - 1 g microbes to one plant in a plastic vessel respectively . the water level is adjusted to be the same as in the field . the container and the plant are wrapped with a large transparent plastic bag to prevent the spreading of harmful microbes , and the plant was kept away from the side of bag to avoid the abnormal growth . these bags are placed in a green house with normal illumination for 7 - 14 days . the growth of each plant is observed to confirm whether it has symptoms . finally , no symptom is observed . therefore these symbiotic organisms obtained in this experiment show no pathogenicity . culture media containing 39 g of difco pda ( potato dextrose agar ) in one liter of water are autoclaved at 121 ° c . for 20 minutes to cultivate the purified orchid symbiotic organisms obtained from example 1 , which are stored as the seed stocks . the orchid symbiotic organisms can be cultivated and produced in liquid form or solid form . gy culture solution ( 2 % of glucose and 1 % of yeast extract ), cm culture solution ( 5 g each of glucose , yeast extract and malt extract are added to one liter media ), and mp culture media ( 2 . 5 % of milk powder ) are applied for liquid form cultivation . these culture solutions are autoclaved for 20 min to be sterile . after the media are cooled , the abovementioned orchid symbiotic microbial seed stocks are inoculated to cultivate either stay quiet at 25 ° c . or shake at low speed ( 80 - 100 rpm ). five days later , the solution of culture media ias ground with a disinfected juice grinder to disperse the mycelium and stored in a sprinkling can . when orchid symbiotic organisms is cultivated in solid form , media for cultivation of mushroom or mushroom spawn or orchid such as peat moss , sphagnum mosses , coconut fiber or rotting logs are mixed thoroughly in a ratio with the abovementioned liquid culture solution and autoclaved for 60 min . after the media are cooled , the abovementioned orchid symbiotic microbial seed stocks are inoculated in the surface of this medium . cultivation can be carried out in the dark in sterile compact packs or in shallow dishes less than 1 . 5 cm thick ). after several days , when the mycelium grows all over the surface of media , the mycelium can be mixed evenly and used for inoculation , or be dried with media in the shade in a sterile environment , then put into sealing bags and store at 4 ° c . refrigerator , the mycelium can be stored for more than 6 months . the proper cultivating temperature for orchid symbiotic organisms is around 25 - 28 ° c ., usually without illumination . the bio - fertilizer composition of the invention is prepared after the orchid symbiotic organisms are mixed with plant growth substances and suitable media . rhizoctonza sp . ma and rhizoctonia sp . mb isolated from example 1 are spread into different culture media , such as pda culture media , peat , vermiculite , perlite and sphagnum mosses . the seeds of haemaria are inoculated into the abovemetioned culture media to observe the germination . fig1 shows the results of germination rates with different treatments . haemaria seeds do not germinate no matter what kind of culture media is used without the addition of orchid symbiotic mibrobe ( control group ). and germination rates are significant higher than those of control groups when the orchid symbiotic organisms are added . among them , the germination rate of the pda culture media group is the highest , which reached 25 - 30 %. enhancement of haemaria seedling growth with different fertilizers during tissue culture the seedlings of haemaria ( about 1 cm in height ) are planted in oat culture media ( 2 . 5 g of ground oat bran and 11 . 5 g of agar , add water to one liter ) and divided into four groups ; no fertilizer group ( nm , control group ); hyponex no . 3 ( commercial chemical fertilizer ) added group ; bio - fertilizer composition ma added group ( ma ) as described in example 3 containing rhizoctonia sp . ma ( bcrc930076 ); and bio - fertilizer composition mb added group ( mb ) as described in example 3 containing rhizoctonia sp . mb ( bcrc930077 ). the growth of seedlings of haemaria in different groups is compared after 4 months . each treatment contains 15 duplicates , and the data is analyzed with duncan &# 39 ; s multiple range test ( dmrt ) using p - value of 0 . 05 . as shown in table 1 , the addition of fertilizers significantly enhances the growth conditions of plants in comparison with the plants of the control group . among the three former groups , hyponex no . 3 added group shows the significantly enhancing effects in plant heights only , while the bio - fertilizer composition added groups show significant effects in plant heights , leave lengths and fresh weights when compared to the control group . other values such as leave widths and root numbers are also higher than those of the control group though not significantly . in summary , the bio - fertilizer composition in the present invention indeed effectively improves the growth of the seedlings of haemaria , and is better than the effects of chemical fertilizer . the seedlings of haemaria ( 6 - 9 cm in height ) are divided into 2 groups by heights ( 6 - 7 cm in height vs 8 - 9 cm in height ) and planted in oat culture media . each group is further divided into 3 groups : no fertilizer group ( nm control group ); bio - fertilizer composition ma ( bcrc930076 ) added group from example 3 ; and bio - fertilizer composition mb ( bcrc930077 ) added group from example 3 . the growth of seedlings of haemaria in different groups is compared after 4 months . each treatment contains 20 duplicates , and the data is analyzed with duncan &# 39 ; s multiple range test ( dmrt ) using p - value of 0 . 05 . as shown in table 2 , the addition of fertilizers ( treatment groups ) shows significant effects on both of the seedlings of haemaria in plant heights , leave numbers and fresh weights in comparison with those of the plants from the control group , and showed better growth conditions . the seedlings of dendrobium candidum are planted in oat culture media after deflasking from tissue culture , and divided into 3 groups : no fertilizer group ( nm control group ); bio - fertilizer composition ma ( bcrc930076 ) added group from example 3 ; and bio - fertilizer composition mb ( bcrc930077 ) added group from example 3 . the growth of seedlings of dendrobium candidum in different groups is compared after 4 months . each treatment contains 20 duplicates , and the data is analyzed with duncan &# 39 ; s multiple range test ( dmrt ) using p - value of 0 . 05 . as shown in table 3 , the addition of fertilizers ( treatment groups ) improved the growth of dendrobium candidum in comparison with the control group , and the survival rates of treatment groups are 20 % better than that of the control group . the seedlings of phalaenopsis are planted during tissue culture , and divided into 3 groups ; no fertilizer group ( control group ); bio - fertilizer composition ma ( bcrc930076 ) added group from example 3 ; and bio - fertilizer composition mb ( bcrc930077 ) added group from example 3 . the growth of seedlings of phalaenopsis in different groups is compared after 4 months . each treatment contains 5 duplicates , and the data is analyzed with duncan &# 39 ; s multiple range test ( dmrt ) using p - value of 0 . 05 . the effect of addition of fertilizers ( treatment groups ) in the growth of phalaenopsis in comparison with the control group is shown in fig2 . the root numbers and fresh weights of treatment groups are significantly higher than those of the control group . enhancement of phalaenopsis seedling growth with bio - fertilizer after deflasking from tissue culture the seedlings of phalaenopsis are planted after deflasking from tissue culture , and divided into 3 groups ; no fertilizer group ( nm control group ); bio - fertilizer composition ma ( bcrc930076 ) added group from example 3 ; and bio - fertilizer composition mb ( bcrc930077 ) added group from example 3 . after 4 months , the growth of seedlings of phalaenopsis after deflasking in different groups is compared . each treatment contained 5 duplicates , and the data is analyzed with duncan &# 39 ; s multiple range test ( dmrt ) using p - value of 0 . 05 . the effects of fertilizers ( treatment groups ) in the growth of phalaenopsis in comparison with the control group are shown in fig3 . the contents of chlorophyll of treatment groups are significantly higher than those of the control group . phalaenopsis amabili and doritaenopsis casablanca joy × phalaenopsis taida pinlong are treated with either bio - fertilizer composition mb or plant growth regulators gibberellic acid ( ga 3 ), or both . the flowering rates are observed after incubation . as shown in table 4 , the addition of bio - fertilizer mb and ga 3 ( treatment groups ) improved the growth of both phalaenopsis to a large extent : 92 % and 88 % respectively , in comparison with 42 % of the control group ( nm ), which is 50 % better than that of the control group . anoectochilus formosanus is treated with either bio - fertilizer composition mb ( mb ) or nothing ( nm ). the changes on effective components are analyzed after incubation . the treatment contains 4 duplicates , and the data is analyzed with duncan &# 39 ; s multiple range test ( dmrt ) using p - value of 0 . 05 . table 5 shows the comparison analysis of bioactive components with health benefits such as superoxide dismutase ( sod ), polysaccharids , polyphenols , phosphorus ions and vitamin c with or without the addition of bio - fertilizer mb . the bio - fertilizer composition mb ( treatment group ) significantly increased the effective components of anoectochilus formosanus to a large extent .
disclosed is a bio - fertilizer composition for promoting growth of orchid plants . the composition comprises a symbiotic organism , a growth substance ; and a medium , which is used to mix and evenly disperse the symbiotic organisms and the growth substance . the symbiotic organism is selected from the group consisting of rhizoctonia sp . and rhizoctonia sp . . the bio - fertilizer composition according to the invention can promote the growth of orchid plants , increase the flowering rate and flowering quality , decrease the occurrence of root disease to prevent the usage of pesticide , and increase the beneficial components toward human health of medicinal orchids .