Tillage and crop rotation effects on subsurface drainage response to rainfall

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1996
Authors
Bjorneberg, David
Kanwar, Ramesh
Melvin, Stewart
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Agricultural and Biosystems Engineering
Abstract

A field study was conducted to determine if tillage and crop rotation affected subsurface drainage response to rainfall. An instrumentation system collected subsurface drain flow data from thirty-six, 0.4 ha plots during the 1993, 1994 and 1995 growing seasons. Response time, time-to-peak drain flow rate, drainage volume, peak drain flow rate and percent preferential flow were compared between two tillage systems (no-till and chisel plow) and two crop rotations (continuous corn and corn-soybean) for 23 drainage events over the three-year study. The influence of preferential flow was estimated for each drainage event using a hydrograph separation procedure based on subsurface drain flow rate changes.

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This article was published in Transactions of the ASAE 39(6): 2147–2154, doi:10.13031/2013.27718.

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