@misc{10481/95317,
year = {2024},
month = {8},
url = {https://hdl.handle.net/10481/95317},
abstract = {Preplant soil disinfestation often relies on harmful soil fumigants; however, the efficacy of sustainable alternatives
using biomass amendment fermentation is limited to tillage depths (0−15 cm). This soil column study evaluated whether increasing
the irrigation frequency could promote anaerobic pest-suppressive conditions in deeper soils by leaching biocidal fermentation
products (organic acids) from surface-applied amendments. Columns received either singular (standard) or weekly irrigation.
Almond hulls, an agricultural byproduct, were either incorporated 0−15 cm into soil or applied as a surface mulch. Oxygen and
organic acids were measured at 4−50 cm over 21 days, and the experiment was conducted in triplicate. Anaerobic conditions (3%
O2) were achieved after 5 days, corresponding to acetic acid accumulation below amended layers: maximum concentrations ranged
from 42 to 93 mM at 19−50 cm depths. Additional irrigation further increased concentrations in the deepest layer (50 cm) by
almost 50%, demonstrating that water management can enable strategies for depth-dependent soil pest control. This may be
particularly valuable for soil disinfestation ahead of the establishment of deep-rooted crops.},
organization = {National Institute of
Occupational Safety and Health [grant agreement number
U54-OH007550]},
organization = {Almond Board of California [grant
number 17-SIMMONSC-COC-02]},
publisher = {American Chemical Society},
keywords = {crop protection},
keywords = {biopesticides},
keywords = {waste valorization},
title = {Effect of Almond Residue Soil Amendments and Irrigation Regiment on Organic Acid Development and Transport in Soil},
doi = {10.1021/acsagscitech.4c00133},
author = {Shea, Emily and Fernández Bayo, Jesús Dionisio and Simmons, Christopher},
}