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Chicken litter provides organic alternative to synthetic fertilizers
Date:3/3/2011

tilizer 4𔃀𔃀 was applied at four rates of 1%, 2%, 4%, and 6% (by volume); 3𔃁𔃁 was applied at four rates of 1.34%, 2.67%, 5.34%, and 8.0% (by volume); and 14󈝺󈝺 was applied at rates of 0.99, 1.98, 3.96, and 5.94 kg/m3.

Results from the study indicated that broiler litter-based 4𔃀𔃀 and 3𔃁𔃁 have the potential to be used as organic fertilizer sources for container production of marigolds in greenhouses.

"For the organic fertilizer rates used in this study, in general, low to intermediate rates of 4𔃀𔃀 and 3𔃁𔃁 produced the highest plant growth index, shoot dry weight, number of flowers per plant, total flower dry weight, and root rating. Plants grown at high rates of 4𔃀𔃀 and 3𔃁𔃁 showed symptoms associated with excessive fertilization, including reduced plant growth, decreased root quality, and decreased number and dry weight of flowers." According to the authors, the results are consistent with other studies that have shown excessive organic fertilizer depressed plant growth compared with lower fertility levels

The scientists advised growers to be cautious with the rate of fertilizer applied. "Because different crops may respond differently to these natural fertilizers, it is important for growers to test any new fertilizers before incorporating them into their production practices", they noted.


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Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert  

Page: 1 2

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