http://www.landwise.org.nz/water/irrigation/guest-post-levelling-sand-dunes-to-improve-crop-and-irrigation-performance/ Sustainable cropping through technology Sun, 14 Mar 2010 21:13:10 -0500 http://wordpress.org/?v=2.8.6 hourly 1 http://www.landwise.org.nz/water/irrigation/guest-post-levelling-sand-dunes-to-improve-crop-and-irrigation-performance/comment-page-1/#comment-85 Craig Ross Mon, 30 Nov 2009 00:32:36 +0000 http://www.landwise.org.nz/?p=593#comment-85 Lucerne would certainly help break-up any subsoil tillage/compaction pans caused by the levelling process or get root penetration into buried silt layers. However lucerne roots wouldn't be able to break up iron/humus-pans. I found no evidence of any tillage pans in the Dalrymple's dune levelling operations, so I don't think it would be beneficial for breaking up subsoil impediments on their levelled dunes. Lucerne would certainly help break-up any subsoil tillage/compaction pans caused by the levelling process or get root penetration into buried silt layers. However lucerne roots wouldn’t be able to break up iron/humus-pans. I found no evidence of any tillage pans in the Dalrymple’s dune levelling operations, so I don’t think it would be beneficial for breaking up subsoil impediments on their levelled dunes.

]]> http://www.landwise.org.nz/water/irrigation/guest-post-levelling-sand-dunes-to-improve-crop-and-irrigation-performance/comment-page-1/#comment-62 Scott Lawson Wed, 18 Nov 2009 09:23:40 +0000 http://www.landwise.org.nz/?p=593#comment-62 What about using lucerne as the first crop in the rotation after the surface optimisation, perhaps it may have a subsoiling effect whilst providing an economic return at the same time. What about using lucerne as the first crop in the rotation after the surface optimisation, perhaps it may have a subsoiling effect whilst providing an economic return at the same time.

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