Sprinkler irrigation runoff and erosion control with polyacrylamide

EL CONTROL DE EL DESLAVE POR IRRIGACION Y LA EROSION POR ASPERSION CON POLIACRILAMIDO

Bjorneberg, D.L. and Aase, J.K. and Sojka, R.E. (2000) Sprinkler irrigation runoff and erosion control with polyacrylamide. pp. 513-522. In: Evans, R.G. and Benham, B.L. and Trooien, T.P. (eds.) National Irrigation Symposium. Proc. 4th Decennial Symp. USA-AZ-Phoenix, 2000/11/14-16. ASAE, St. Joseph, MI.

	PDF 1035.pdf Download (549kB)
	PDF ES_1035.pdf Download (11kB)

Abstract

Applying polyacrylamide (PAM) with furrow irrigation water dramatically reduces soil erosion
and frequently increases infiltration. We conducted three studies to determine if PAM controlled
runoff and soil erosion under sprinkler irrigation. These studies were conducted in the laboratory
on 1.5 m long, 1.2m wide and 0.15 m deep soil boxes. Water was applied at 80 mm h-1 with an
oscillating nozzle irrigation simulator. Applying 2 to 4 kg PAM ha-1 significantly reduced runoff
and soil erosion during the irrigation when PAM was applied. These beneficial effects decreased
with each subsequent irrigation. Multiple PAM applications maintained runoff and erosion
control longer than a single application, even though both treatments received the same total
amount of PAM. Seventy percent residue cover more effectively controlled runoff and erosion
than PAM, while 30% cover was about as effective as PAM. A single PAM application of 2 to 4
kg ha-1 may be adequate for a critical irrigation (i.e. seedling emergence), but multiple PAM
applications are necessary for season-long benefits. Tillage and residue management practices
should be considered before PAM is applied to control runoff under sprinkler irrigation. These
results, however, could vary with irrigation water quality and soil chemistry.

Item Type:	Conference or Workshop Item (Paper)
NWISRL Publication Number:	1035
Subjects:	Irrigation > Furrow irrigation > Erosion > Polyacrylamide Irrigation > Furrow irrigation > Runoff losses Irrigation > Sprinkler irrigation Polyacrylamide (PAM) > Water-soluble PAM (WSPAM) > Erosion control Polyacrylamide (PAM) > Water-soluble PAM (WSPAM) > Runoff Soil > Erosion Mass Import - autoclassified (may be erroneous)
Depositing User:	Users 6 not found.
Date Deposited:	20 Nov 2010 21:57
Last Modified:	14 Nov 2016 18:51
Item ID:	1097
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1097