{"product_id":"laminated-root-rot-in-a-western-washington-plantation-eight-year-mortality-and-growth-of-douglas-fir-as-related-to-infected-stumps-tree-density-and-paperback","title":"Laminated Root Rot in a Western Washington Plantation: Eight-Year Mortality and Growth of Douglas-Fir as Related to Infected Stumps, Tree Density, and - Paperback","description":"\u003cp\u003eby \u003cb\u003eUnited States Department of Agriculture\u003c\/b\u003e (Author)\u003c\/p\u003e\u003cp\u003eA 4-year-old Douglas-fir plantation in the western Washington Cascades was monitored for 8 years after fertilization with potassium (K), nitrogen (N), and K+N to determine fertilizer effects on rates of mortality from laminated root rot (LRR) and other causes relative to a nonfertilized control. Each element was applied at a rate of 300 lb\/acre on and around 0.2-acre plots replicated seven times in a randomized complete block design. Cumulative mortality from LRR did not differ significantly among fertilizer treatments, and losses were strongly related to density of infected stumps from the previous stand (r2 = 0.74). Mortality from disease and other sources accelerated during the 8 years of monitoring. Average tree growth and stand volume were greatest in treatment N and were reduced where N was combined with K. Continued monitoring is needed to identify potential longer term effects of the fertilizer treatments on susceptibility of Douglas-fir to LRR and Armillaria spp.\u003c\/p\u003e\u003cdiv\u003e\n\u003cstrong\u003eNumber of Pages:\u003c\/strong\u003e 44\u003c\/div\u003e\u003cdiv\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.09 x 11.02 x 8.5 IN\u003c\/div\u003e\u003cdiv\u003e\n\u003cstrong\u003ePublication Date:\u003c\/strong\u003e June 26, 2015\u003c\/div\u003e","brand":"Books by splitShops","offers":[{"title":"Default Title","offer_id":42116657840263,"sku":"9781508798118","price":22.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/2623\/2711\/files\/c9c8b363d81d01d3037a735f16d2b33b.webp?v=1732517814","url":"https:\/\/booksby.splitshops.com\/products\/laminated-root-rot-in-a-western-washington-plantation-eight-year-mortality-and-growth-of-douglas-fir-as-related-to-infected-stumps-tree-density-and-paperback","provider":"Books by splitShops","version":"1.0","type":"link"}