TY - JOUR
T1 - Weed seed inactivation in soil mesocosms via biosolarization with mature compost and tomato processing waste amendments
AU - Achmon, Yigal
AU - Fernández-Bayo, Jesús D.
AU - Hernandez, Katie
AU - McCurry, Dlinka G.
AU - Harrold, Duff R.
AU - Su, Joey
AU - Dahlquist-Willard, Ruth M.
AU - Stapleton, James J.
AU - VanderGheynst, Jean S.
AU - Simmons, Christopher W.
N1 - Publisher Copyright:
© 2016 Society of Chemical Industry
PY - 2017/5/1
Y1 - 2017/5/1
N2 - BACKGROUND: Biosolarization is a fumigation alternative that combines passive solar heating with amendment-driven soil microbial activity to temporarily create antagonistic soil conditions, such as elevated temperature and acidity, that can inactivate weed seeds and other pest propagules. The aim of this study was to use a mesocosm-based field trial to assess soil heating, pH, volatile fatty acid accumulation and weed seed inactivation during biosolarization. RESULTS: Biosolarization for 8 days using 2% mature green waste compost and 2 or 5% tomato processing residues in the soil resulted in accumulation of volatile fatty acids in the soil, particularly acetic acid, and >95% inactivation of Brassica nigra and Solanum nigrum seeds. Inactivation kinetics data showed that near complete weed seed inactivation in soil was achieved within the first 5 days of biosolarization. This was significantly greater than the inactivation achieved in control soils that were solar heated without amendment or were amended but not solar heated. CONCLUSION: The composition and concentration of organic matter amendments in soil significantly affected volatile fatty acid accumulation at various soil depths during biosolarization. Combining solar heating with organic matter amendment resulted in accelerated weed seed inactivation compared with either approach alone.
AB - BACKGROUND: Biosolarization is a fumigation alternative that combines passive solar heating with amendment-driven soil microbial activity to temporarily create antagonistic soil conditions, such as elevated temperature and acidity, that can inactivate weed seeds and other pest propagules. The aim of this study was to use a mesocosm-based field trial to assess soil heating, pH, volatile fatty acid accumulation and weed seed inactivation during biosolarization. RESULTS: Biosolarization for 8 days using 2% mature green waste compost and 2 or 5% tomato processing residues in the soil resulted in accumulation of volatile fatty acids in the soil, particularly acetic acid, and >95% inactivation of Brassica nigra and Solanum nigrum seeds. Inactivation kinetics data showed that near complete weed seed inactivation in soil was achieved within the first 5 days of biosolarization. This was significantly greater than the inactivation achieved in control soils that were solar heated without amendment or were amended but not solar heated. CONCLUSION: The composition and concentration of organic matter amendments in soil significantly affected volatile fatty acid accumulation at various soil depths during biosolarization. Combining solar heating with organic matter amendment resulted in accelerated weed seed inactivation compared with either approach alone.
KW - compost
KW - integrated pest management
KW - passive solar heating
KW - soil acidification
KW - sustainable agriculture
KW - tomato pomace
KW - volatile fatty acids
UR - http://www.scopus.com/inward/record.url?scp=84982993850&partnerID=8YFLogxK
U2 - 10.1002/ps.4354
DO - 10.1002/ps.4354
M3 - 文章
C2 - 27391139
AN - SCOPUS:84982993850
SN - 1526-498X
VL - 73
SP - 862
EP - 873
JO - Pest Management Science
JF - Pest Management Science
IS - 5
ER -