{"id":1074,"date":"2017-03-13T14:20:01","date_gmt":"2017-03-13T21:20:01","guid":{"rendered":"https:\/\/extension.wsu.edu\/wam\/?page_id=1074"},"modified":"2024-11-22T14:51:47","modified_gmt":"2024-11-22T22:51:47","slug":"changes-in-the-physical-aspects-of-soil","status":"publish","type":"post","link":"https:\/\/extension.wsu.edu\/wam\/2017\/03\/13\/changes-in-the-physical-aspects-of-soil\/","title":{"rendered":"[Archived]: Changes in the Physical Aspects of Soil After Four Years of Cover Cropping and Organic Soil Amendments"},"content":{"rendered":"

[row][column][textblock]<\/p>\n

Volume 5 Issue 10<\/strong><\/p>\n

Chris Benedict, Whatcom County Extension Agent
\n<\/strong>Email: chrisbenedict@wsu.edu<\/a><\/strong>[\/textblock][\/column][\/row][row][column][textblock]<\/p>\n

Objective<\/h2>\n

Evaluate measures to improve soil health including the use of ground covers and soil amendments.<\/p>\n

Treatments<\/h2>\n

Irrigation Regime<\/span> (main-plot) \u2013<\/p>\n

1.) Tensiometer Driven 2.) Grower Standard<\/p>\n

Cover Crop<\/span> (split-plot) \u2013<\/p>\n

a.) Fall planted b.) Fall + Spring Planted (site 1<\/span>) c.) Perennial Turfgrass (site 2<\/span>) d.) No cover crop<\/p>\n

Soil Amendment<\/span> (split split-plot) \u2013<\/p>\n

i.) Composted Dairy Solids (site 1<\/span>) ii.) Composted Dairy Solids + Brassica Seed Meal (site 1<\/span>) iii.) Separated Dairy Solids (site 2<\/span>) iv.) Separated Dairy Solids + Brassica Seed Meal (site 2<\/span>) v.) No amendment<\/p>\n

Fall Cover Crop <\/span>\u2013 ‘Wheeler’ rye (50 lbs\/A) + oats (50 lbs\/A)<\/p>\n

Spring Cover Crop<\/span> (site 1)<\/span> \u2013 Oats (10 lbs\/A) + ‘Piper’ Sorghum X Sudangrass (20 lbs\/A) + ‘Tillage’ Oilseed radish (10 lbs\/A)<\/p>\n

Perennial Turgrass <\/span>(site 2<\/span>) \u2013 Dwarf tall fescue + Fine leaf fescue<\/p>\n

Composted Dairy Solids<\/span> (site 1<\/span>) \u2013 10 tons\/A (d.w. basis)<\/p>\n

Separated Dairy Solids<\/span> (site 2)<\/span> \u2013 3,500 gals\/A (w.w. basis)<\/p>\n

Brassica Seed Meal<\/span> \u2013 1 ton\/A<\/p>\n

Treatments initiated in fall 2011\/spring 2012<\/span>.[\/textblock][textblock]<\/p>\n

Table 1.<\/strong> Dry matter weights and days to harvest (DTH) of covere crops planted itno res raspberry alleyways, 2012-2016 Site 1.<\/figcaption><\/figure>\n

[\/textblock][textblock]<\/p>\n

Figure 1.<\/strong> Alleyway soil compaction in red raspberries with\/without cover crops and\/or composted dairy solids. Those treatments within a year and soil depth with different letters are considered statistically different (p = 0.05).<\/figcaption><\/figure>\n

[\/textblock][textblock]<\/p>\n

Take Home Messages<\/h2>\n