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Proof to back up the claims?

Grasssales2001

LawnSite Member
Location
Shreveport,LA
Let me start by stating that I am a long time visitor to the organic forum here at lawnsite. I have posted a few times, but mainly I come to try and learn more about organics. Organics interests me from a resource conservation standpoint. In my line of work, I see an unbelievable amount of resources and time wasted by uneducated or untrained LCO's. The idea of building up soil fertilty now to reduce or eliminate future inputs appeals to me. Unfortunately, I see a lot of claims made about organics but very little scientific data to back up these claims. I want to believe that there is a better way to maintain healthy landscapes without the huge waste of resources I currently see in the industry.With that being said, does anyone have any scientific data or articles to back up the claim that synthetic ferts are detrimental to soil microbiology.
 

starry night

LawnSite Platinum Member
Maybe others will want to post on this thread. But I must tell you that we have been down this road several times. The threads have gone on and on and on. I wish I could tell you the titles of some but try the search feature.

Again, if others want to get in, start the action.
 
OP
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Grasssales2001

LawnSite Member
Location
Shreveport,LA
I appreciate the response dirt. It is not my intention of starting another long name calling and bashing session like I have seen many times on the organic forum.
 

Landscape Poet

LawnSite Gold Member
Location
Oviedo/Orlando
Let me start by stating that I am a long time visitor to the organic forum here at lawnsite. I have posted a few times, but mainly I come to try and learn more about organics. Organics interests me from a resource conservation standpoint. In my line of work, I see an unbelievable amount of resources and time wasted by uneducated or untrained LCO's. The idea of building up soil fertilty now to reduce or eliminate future inputs appeals to me. Unfortunately, I see a lot of claims made about organics but very little scientific data to back up these claims. I want to believe that there is a better way to maintain healthy landscapes without the huge waste of resources I currently see in the industry.With that being said, does anyone have any scientific data or articles to back up the claim that synthetic ferts are detrimental to soil microbiology.
Just find a thread in which Kiril has gotten on something, usually he puts up plenty of peer reviewed studies which contain lots of information. Hours and hours of reading, but if you are willing to put in the work and have the ability to decipher some of the scientific vocabulary, I think you will find lots of good information in some of his post. And do not be a stranger, I always enjoy others points of fews, so post away.

Michael
 
These may help

http://arjournals.annualreviews.org/doi/abs/10.1146/annurev.mi.15.100161.000441

http://ec.europa.eu/environment/integration/research/newsalert/pdf/13si3.pdf

Also of inerest:

http://www.chem-tox.com/pesticides/

http://en.wikipedia.org/wiki/Pesticide#Environmental_effects

http://urbanext.illinois.edu/soil/sq_info/pest.pdf

http://www.havahart.com/advice/living-organic/why-organic-living/chemical-pesticides-effects

http://www.sustainabletable.org/2009/10/pesticides-if-this-doesn’t-convince-you-nothing-will/

http://www.pollutionissues.com/Na-Ph/Pesticides.html

http://www.pesticide.org/Chapter2.pdf

http://www.organiclawncare101.com/synthetic-pesticides.html

http://ec.europa.eu/environment/integration/research/newsalert/pdf/13si.pdf

Note to members, before a Chemical vs Organic debate starts up: This is just MY OPINION on the subject, I am not going to get in a pissing contest with anyone over any portion of my opinion. You have a right to yours, and I have a right to mine, and I feel no need to defend my opinion. You can agree or disagree, I'm not an activist, and I'm not battleing to convert anyone. I am just in hopes that some of this is of use to some of you. The web sites listed above and other research, other Organic Care Companies such as the Lawn Brothers and other's wisdom and experience with organics have contributed to my opinion and this is what I believe. So here it is:

Your lawn is a natural ecosystem. It maintains itself by depending on NATURAL cycles. When the CHEMICAL "Lawn Care" company applies herbicides and pesticides they create an unnatural environment, polluting your soil and groundwater. Not ONLY do they kill the weeds and bugs, but they also kill the beneficial microbes that live in the soil, the soil and grass blades lack microbes necessary to fight off disease and pests, thus requiring the CHEMICAL "Lawn Care" company to artificially beautify your lawn by adding even more chemicals, causing a repetitive cycle of dependency on the chemicals. Your lawn needed these beneficial microbes to help break down organic matter (thatch) and convert this accumulation into nutrients. Grass clippings are an essential source of nutrients in a healthy lawn. This is why chemically treated lawns build up so much thatch, they can no longer break down the grass clippings and utilize the nutrients. Your lawn is unable to sustain itself naturally! Your lawn is now a chemical junkie! It must rely on ARTIFICIAL means to remain beautiful, whereas it would have been perfectly capable of natural beauty if given the opportunity to thrive. Mother Nature did it right, CHEMICALS are messing it up!

So now you have a chemically treated lawn extremely nutritionally deficient without any means of breaking down organic matter for food. So, to make up the difference, these CHEMICAL "Lawn Care" companies apply fertilizer on a regular basis to feed the lawn ($$$$$). These fertilizers are very high in Nitrogen, and while it makes your grass green up quickly, it does little else to help your lawn! Nitrogen causes the grass to put most of it's energy into blade growth. Yes, this looks great. The grass is bright green and grows a foot a week! This is not natural, folks! It's like steroids for your lawn. The grass puts most of it's energy into blade growth and very little into root growth. As a result, the grass cannot tap deep into the soil where the water is. It's roots stay close to the surface, causing your lawn to stress easily during times of drought or little rain. You try to compensate for this by over watering ($$$$$), (which is encouraged by the CHEMICAL "Lawn Care" companies), and costs a small fortune, not to mention wastes our water resources! This further adds to the problem of the grass not sending roots deep to find water. They don't need to, they get all they need right here at the surface! Also, the lawn grows about twice as fast as normal, requiring more frequent mowing ($$$$$) and creating excessive clippings that now must be removed by dethatching ($$$$$). If the clippings are not bagged ($$$$$), they will not decompose, and will bunch up and create dead spots in the lawn. The lawn will need to be dethatched and spot seeded ($$$$$). All of this results in a very weak, chemically dependent lawn that cannot pull the nutrients from the soil (they aren't there) and the roots have been weakened so badly by over-fertilization it can't get to the water deeper in the soil. So now it requires more work and money ($$$$$) than should be necessary. Get off the chemical junk!!! In a short time organic care can establish the natural cycle again. You know that being a drug junkie is bad for a family member, it's also bad for your lawn!
 
OP
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Grasssales2001

LawnSite Member
Location
Shreveport,LA
Crazyblonde, thank you for taking the time to post the links. Let me clarify, I am strictly wanting to no the effects of synthetic N,P,K and other nutrients on soil microbe populations. I am not talking abouth the use of synthetic herbicides,insecticides, or fungicicides.
 

Kiril

LawnSite Fanatic
Location
District 9 CA
Here are some that I have in ready in bbcode format. Some you can download, some you will need to buy to read anything other than the abstract. Some links may not work and you will need to search for the new link.

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Impacts on Microbes & Microbial Communities


FERTILIZERS (Organic & Inorganic)

The effects of chronic nitrogen fertilization on alpine tundra soil microbial communities: implications for carbon and nitrogen cycling

Chronic nitrogen enrichment affects the structure and function of the soil microbial community in temperate hardwood and pine forests

Chronic nitrogen additions reduce total soil respiration and microbial respiration in temperate forest
soils at the Harvard Forest


Changes in Soil Microbial Biomass and Bacterial Community in a Long-term
Fertilization Experiment During the Growth of Maize


Bacterial Community Structure and Diversity in a Century-Old Manure-Treated Agroecosystem

Seasonal changes in soil microbial communities along a fertility gradient of temperate grasslands

Responses of the bacterial and fungal biomass in a grassland soil to multi-year applications of dairy manure slurry and fertilizer

Responses of grassland soil nematodes and protozoa to multi-year and single-year applications of dairy manure slurry and fertilizer

Soil microbial biomass and selected soil enzyme activities: effect of fertilization and cropping practices

Responses of Active Bacterial and Fungal Communities in Soils under Winter Wheat to Different Fertilizer and Pesticide Regimens

Spatial and seasonal variation of gross nitrogen transformations and microbial biomass in a northeastern US grassland


Abstracts


Soil biological quality of grassland fertilized with adjusted cattle manure slurries in comparison with organic and inorganic fertilizers

Fungal biomass in pastures increases with age and reduced N input

Fungal/bacterial ratios in grasslands with contrasting nitrogen management

Soil microbial community responses to dairy manure or ammonium nitrate applications

Chemical and biological indicators of soil quality in organic and conventional farming systems in Central Italy

Application of fresh and composted organic wastes modifies structure, size and activity of soil microbial community under semiarid climate

Structure and function of the soil microbial community in a long-term fertilizer experiment

The role of tree leaf mulch and nitrogen fertilizer on turfgrass soil quality

Long-term effect of mineral fertilizers and amendments on microbial dynamics in an alfisol of Western Himalayas

Ground beetle abundance and community composition in conventional and organic tomato systems of California's Central Valley

Organic and synthetic fertility amendments influence soil microbial, physical and chemical properties on organic and conventional farms

Long-term effects of organic and synthetic soil fertility amendments on soil microbial communities and the development of southern blight

Effects of cover crops, compost, and manure amendments on soil microbial community structure in tomato production systems
 

Kiril

LawnSite Fanatic
Location
District 9 CA
Might as well post the rest of the file.

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WATER


Influence of irrigated agriculture on soil microbial diversity

Response of microbial community composition and activity in agricultural and grassland soils after a simulated rainfall

Flooding effects on soil microbial communities

Microbial Communities in High and Low Recharge Environments: Implications for Microbial Transport in the Vadose Zone


CROP RESIDUES


Redistribution of crop residues during row cultivation creates a biologically enhanced environment for soil microorganisms

Effects of mycorrhizal roots and extraradical hyphae on 15N uptake from vineyard cover crop litter and the soil microbial community


WEEDS


Nitrogen source influences wild mustard growth and competitive effect on sweet corn

Nitrogen Fertilizer, Manure, and Compost Effects on Weed Growth
and Competition with Spring Wheat



COMPACTION & TEXTURE


Nitrogen mineralization and microbial biomass as affected by soil compaction

Microbial Responses to Wheel-Traffic in Conventional and No-Tillage Systems

Compaction alters physical but not biological indices of soil health

Active fractions of organic matter in soils with different texture


GENERAL DISTURBANCE


Microbial community responses in forest mineral soil to compaction, organic matter removal, and vegetation control

Soil microbial community composition and land use history in cultivated and grassland ecosystems of coastal California

Carbon and nitrogen conservation in dryland tillage and cropping systems

Soil Scarification and Wildfire Interactions and Effects on Microbial Communities and Carbon


PLANT COMPOSITION


Invasion by an exotic tree alters above and belowground ecosystem components
 
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