Zone-subsoiling relationships to bulk density and cone index on a furrow-irrigated soil

LAS RELACIONES DE SUBSOLADORR-DE ZONA CON LA DENSIDAD DE VOLUMEN E INDICE DE CONO EN UN SUELO IRRIGADO SON SURCOS

Aase, J.K. and Bjorneberg, D.L. and Sojka, R.E. (2001) Zone-subsoiling relationships to bulk density and cone index on a furrow-irrigated soil. Transactions of the ASAE. 44(3):577-583.

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Abstract

Zone subsoiling on irrigated land has been successfully used to improve potato (Solanum tuberosum L) yield and
quality. Zone subsoiling under furrow irrigation may disrupt water flow and influence infiltration and soil erosion. We
hypothesized that zone subsoiling, done appropriately, will maintain integrity of irrigation furrows, improve small grain and
dry bean (Phaseolus vulgaris L.) growth and yield, and not adversely affect water flow, infiltration, or erosion on
furrow—irrigated soils. The experiment was conducted at the USDA—ARS Northwest Irrigation and Soils Research Laboratory
in Kimberly, Idaho. The soil is a Portneuf silt loam (coarse—silty, mixed, superactive, mesic Durinodic Xeric Haplocalcids).
Tillage treatments were disk, disk + paratill, paratill, and no—till. There were no differences in water infiltration, runoff, or
soil erosion among treatments. Bulk density differences among treatments were largest at the 0.15 to 0.20—m depth, and bulk
density was about 16% to 18% greater on disk and no—till treatments than on paratill treatments. The highest frequency of
low cone index (CI) values belonged to paratill treatments (65% to 80% frequency of CI values less than 2 MPa); the lowest
frequency of low CI values belonged to no—till treatment (20% frequency less than 2 MPa). Cone index versus bulk density
relationships depended on soil water content with a slope of 5.81 (r 2 = 0.70) in the wetter year of 1997, and 2.90 in the drier
year of 1995 (r2 = 0.60). Subsoiling can be accomplished on furrow—irrigated lands with no adverse effects on runoff,
infiltration, and erosion, but under our conditions did not improve crop growth and yield.

Item Type:	Article
NWISRL Publication Number:	1052
Subjects:	Soil > Subsoiling Mass Import - autoclassified (may be erroneous)
Depositing User:	Users 6 not found.
Date Deposited:	20 Nov 2010 21:50
Last Modified:	14 Nov 2016 17:18
Item ID:	129
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/129