Answer: The trophic interaction between microbes and plants is important. Plant growth-promoting rhizobacteria (PGPR) are group of micro-organism that increasingly appreciated for their contribution to primary productivity through promotion of growth and triggering induced system registance. By triggering plant defense, PGPR can make an important contribution to biocontrol of pests and pathogens. The interactions increasing order of complexity, starting with single micro-organism to other organisms that are present in the soil such as nematodes, fungi, earthworm or protozoa and other soil dwelling organisms in the rhizosphere. In the rhizospheres, bacteria can have direct beneficial or harmful effect on plant. However there are also important indirect feedback interaction between plant roots and soil bacteria and other micro-organisms. For example root-released exudates promote bacterial growth. In turn plant growth stimulated by bacterivores (those eat bacteria) who liberate nutrients. Plant roots, bacteria and other microbes interact in complex food web to form a multi-trophic complex interaction between plants and bacteria. In maintaining sustainable agriculture, the enhancement of environmental quality and natural resources occurs. Sustainable agriculture focus on prucing livelyhood communities. Successful sustainable production in healthy soil is an ecologically sound practice that have little or no adverse effect on natural ecosystem. To reverse the damage of natural communities, renewable natural resourses are protected and recycled. Solution Answer: The trophic interaction between microbes and plants is important. Plant growth-promoting rhizobacteria (PGPR) are group of micro-organism that increasingly appreciated for their contribution to primary productivity through promotion of growth and triggering induced system registance. By triggering plant defense, PGPR can make an important contribution to biocontrol of pests and pathogens. The interactions increasing order of complexity, starting with single micro-organism to other organisms that are present in the soil such as nematodes, fungi, earthworm or protozoa and other soil dwelling organisms in the rhizosphere. In the rhizospheres, bacteria can have direct beneficial or harmful effect on plant. However there are also important indirect feedback interaction between plant roots and soil bacteria and other micro-organisms. For example root-released exudates promote bacterial growth. In turn plant growth stimulated by bacterivores (those eat bacteria) who liberate nutrients. Plant roots, bacteria and other microbes interact in complex food web to form a multi-trophic complex interaction between plants and bacteria. In maintaining sustainable agriculture, the enhancement of environmental quality and natural resources occurs. Sustainable agriculture focus on prucing livelyhood communities. Successful sustainable production in healthy soil is an ecologically sound practice that have littl.

1. Answer:
The trophic interaction between microbes and plants is important.
Plant growth-promoting rhizobacteria (PGPR) are group of micro-organism that increasingly
appreciated for their contribution to primary productivity through promotion of growth and
triggering induced system registance.
By triggering plant defense, PGPR can make an important contribution to biocontrol of pests and
pathogens. The interactions increasing order of complexity, starting with single micro-organism
to other organisms that are present in the soil such as nematodes, fungi, earthworm or protozoa
and other soil dwelling organisms in the rhizosphere.
In the rhizospheres, bacteria can have direct beneficial or harmful effect on plant. However there
are also important indirect feedback interaction between plant roots and soil bacteria and other
micro-organisms. For example root-released exudates promote bacterial growth. In turn plant
growth stimulated by bacterivores (those eat bacteria) who liberate nutrients. Plant roots, bacteria
and other microbes interact in complex food web to form a multi-trophic complex interaction
between plants and bacteria.
In maintaining sustainable agriculture, the enhancement of environmental quality and natural
resources occurs. Sustainable agriculture focus on prucing livelyhood communities. Successful
sustainable production in healthy soil is an ecologically sound practice that have little or no
adverse effect on natural ecosystem. To reverse the damage of natural communities, renewable
natural resourses are protected and recycled.
Solution
Answer:
The trophic interaction between microbes and plants is important.
Plant growth-promoting rhizobacteria (PGPR) are group of micro-organism that increasingly
appreciated for their contribution to primary productivity through promotion of growth and
triggering induced system registance.
By triggering plant defense, PGPR can make an important contribution to biocontrol of pests and
pathogens. The interactions increasing order of complexity, starting with single micro-organism
to other organisms that are present in the soil such as nematodes, fungi, earthworm or protozoa
and other soil dwelling organisms in the rhizosphere.
In the rhizospheres, bacteria can have direct beneficial or harmful effect on plant. However there
are also important indirect feedback interaction between plant roots and soil bacteria and other
micro-organisms. For example root-released exudates promote bacterial growth. In turn plant

2. growth stimulated by bacterivores (those eat bacteria) who liberate nutrients. Plant roots, bacteria
and other microbes interact in complex food web to form a multi-trophic complex interaction
between plants and bacteria.
In maintaining sustainable agriculture, the enhancement of environmental quality and natural
resources occurs. Sustainable agriculture focus on prucing livelyhood communities. Successful
sustainable production in healthy soil is an ecologically sound practice that have little or no
adverse effect on natural ecosystem. To reverse the damage of natural communities, renewable
natural resourses are protected and recycled.