Chemistry: fertilizers – Processes and products – Bacterial
Patent
1995-01-26
1997-10-14
Lander, Ferris
Chemistry: fertilizers
Processes and products
Bacterial
71 7, 71903, 71904, C05F 1108
Patent
active
056767269
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a matrix and agricultural materials.
BACKGROUND ART
The usual medium for cultivation of plants is soil and actually soil has been utilized in the cultivation of plants on farms and in pots. It is no wonder that soil is used as the basal culture medium for plants but for a variety of reasons such as the incidence of damages due to pests inhabiting the soil, limited availability of fertile soil, labor involved in cultivation management, etc., greenhouse farming not utilizing soil has also become the order of the day in recent years. For example, a host of culture media such as rock wool, peat moss, vermiculite, etc. are available as substitutes for soil. However, whereas these media not utilizing soil have the advantage of being lightweight compared with soil, they are seriously handicapped in fertilizer-holding capacity and unavoidably require additional application of fertilizers. Moreover, any medium not utilizing soil is poor in moisture retention and/or has the problem of disposal after use. Particularly from the environmental point of view, disposal of used media is an important consideration.
Meanwhile, the soil used for growing plants is inhabited by useful microorganisms which are adapting it to the cultivation of plants. However, when the useful microorganisms in the soil have been depleted on repeated cultivation or in cultivation on soil inherently unsuited for cultivation of plants, it is common practice to employ some or other soil conditioner for rejuvenating the soil into a condition suited for cultivation. Such soil conditioners are put to use by dusting them over soil or mixing them with soil for the purpose of promoting growth of crop plants and controlling pest hazards.
As soil conditioners, those containing natural organic matter are frequently used for assisting in the growth of useful microorganisms. Moreover, in order that useful microorganisms may be directly incorporated in the soil, soil conditioners having microorganisms adsorbed thereon have also been developed. The soil conditioners commercially available under the tradenames of "Bio-Yuki", "Nenisoil", "Cobshut", etc. comprise useful microorganisms adsorbed on porous mineral supports. However, since the supports used for immobilizing microorganisms in these soil conditioners are minerals, they have the drawback that no sufficient colonization of microorganisms can be expected with such a support alone. Therefore, for aiding in the colorization and multiplication of microorganisms, microorganism-immobilizing supports supplemented with organic substances which nourish microorganisms have been developed.
As the conventional microorganism-immobilizing supports, the support prepared by admixing a porous mineral with organic substances serving as food for microorganisms and the support prepared by adding a binder to a food for microorganisms, such as sawdust, and granulating the mixture are known. And agricultural microbial materials manufactured by spraying such microorganism-immobilizing supports with a suspension of useful microorganisms, such as those for promotion of plant growth and those for pest control, have so far been in use as soil conditioners. However, since the agricultural microbial material of the first-mentioned type consists of a habitat (carrier) for microorganisms and an organic nutrient matter (e.g. polysaccharides such as cellulose) as independent units, the efficiency of utilization of the added organic matter by the microorganisms is not sufficiently high so that the rates of colonization and growth of microorganisms are disadvantageously low. On the other hand, the agricul tural microbial material of the second-mentioned type has a limited microorganism-immobilizing capacity because substantially only the surface of the support is available for the immobilization of microorganisms and, moreover, when stored for a long time, the viability of the microorganisms, particularly that of nonsporogenous microorganisms, is considerably reduced.
DISCLOSURE OF INVENTION
O
REFERENCES:
patent: 4859594 (1989-08-01), Portier
patent: 4937081 (1990-06-01), Kagotani
Aoki Yukio
Tanaka Masahiro
Lander Ferris
Otsuka Kagaku Kabushiki Kaisha
LandOfFree
Matrix and agricultural materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Matrix and agricultural materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Matrix and agricultural materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1551944