Agronomy Journal
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
 QUICK SEARCH:   [advanced]


     


Published in Agron J 99:1104-1110 (2007)
DOI: 10.2134/agronj2006.0321
© 2007 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Abstract Freely available
Right arrow Full Text Free
Right arrow Full Text (PDF) Free
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Quincke, J. A.
Right arrow Articles by García, J. P.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Quincke, J. A.
Right arrow Articles by García, J. P.
Agricola
Right arrow Articles by Quincke, J. A.
Right arrow Articles by García, J. P.
Related Collections
Right arrow Infiltration
Right arrow Tillage

One-Time Tillage of No-Till Systems

Soil Physical Properties, Phosphorus Runoff, and Crop Yield

J. A. Quinckea, C. S. Wortmannb,*, M. Mamob, T. Frantic, R. A. Drijberb and J. P. Garcíab

a INIA La Estanzuela, CC 39173 Colonia, Uruguay
b 279 Plant Science, Univ. of Nebraska-Lincoln, Lincoln, NE 68583-0915
c Dep. of Biosystems Engineering, Univ. of Nebraska-Lincoln, Lincoln, NE 68583-0726


Figure 1
View larger version (25K):
[in this window]
[in a new window]

 
Fig. 1. Runoff P concentration during a 12-min simulated rainfall at 23 to 30 mo after one-time tillage of continuous no-till at two locations (the Rogers Memorial Farm, RMF; and the Agricultural Research and Development Center, ARDC) in eastern Nebraska. The P fractions were dissolved P (white bars) and particulate P (shaded bars). The Y-bars indicate the SEs. Differences between tillage treatments within sites are denoted by lowercase letters for dissolved or particulate P and by uppercase letters for total P (P = 0.05).

 

Figure 2
View larger version (24K):
[in this window]
[in a new window]

 
Fig. 2. The amount of runoff P loss during a 12-min simulated rainfall at 23 to 30 mo after one-time tillage of continuous no-till at two locations (the Rogers Memorial Farm, RMF; and the Agricultural Research and Development Center, ARDC) in eastern Nebraska. The P fractions are dissolved P (white bars) and particulate P (shaded bars). The Y-bars indicate the SEs. Differences between tillage treatments within sites are denoted by lowercase letters for dissolved or particulate P and by uppercase letters for total P (P = 0.05).

 

Figure 3
View larger version (18K):
[in this window]
[in a new window]

 
Fig. 3. Phosphorus losses in (a) dissolved and (b) particulate fractions vs. runoff volume as a ratio of total rainfall. Samples were collected periodically during a simulated 12-min rainfall events that delivered, on average, a total of 64 mm at Rogers Memorial Farm (RMF, closed symbols) and 76 mm at the Agricultural Research and Development Center (ARDC, open symbols).

 





HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Crop Science Vadose Zone Journal
Journal of Natural Resources
and Life Sciences Education
Soil Science Society of America Journal
Journal of Plant Registrations Journal of
Environmental Quality
The Plant Genome
Copyright © 2007 by the American Society of Agronomy.