http://www.spectrumanalytic.com/doc/ 2013-05-02T07:37:57-04:00 http://www.spectrumanalytic.com/doc/ http://www.spectrumanalytic.com/doc/lib/images/favicon.ico text/html 2013-04-29T15:00:01-04:00 bill http://www.spectrumanalytic.com/doc/library/articles/soybean_cyst_nematodes?rev=1367262001&do=diff SCN, Cyst, Nematode Soybean cyst nematodes (Heterodera glycines) have been an increasing problem for soybean producers over the past decade or more. H. glycines is the only cyst nematode known to attack soybeans in the U.S. Most of the major soybean producing areas of the U.S. now recognize that SCN is present in at least part of the area. SCN is and obligate parasite of higher plants, more than 1100 species of plants have been found to serve as hosts. Fortunately, most are weed and crop plan… text/html 2012-08-20T10:16:30-04:00 wayland http://www.spectrumanalytic.com/doc/library/newsletter/start?rev=1345472190&do=diff The Analysis * [Winter 2010] * [Summer 2011] * [Winter 2011] * [Summer 2012] The Turf Analysis * [Winter 2011] text/html 2012-08-01T15:45:51-04:00 bill http://www.spectrumanalytic.com/doc/library/articles/excess_nitrates_in_drought_stressed_corn?rev=1343850351&do=diff corn, corn silage, corn stalk, drought, dry weather, feed, nitrate, sample, silage, test With mother nature's constantly changing weather patterns in different areas of the country there comes concern during dry years of the build up of nitrate levels in plants (particularly in corn silage) and the effects that it can have on livestock when used as feed. This paper was written to help the reader become more aware of the different guidelines and university recommendations as well as uni… text/html 2011-11-21T16:17:02-04:00 bill http://www.spectrumanalytic.com/doc/library/articles/soil_test_p_and_k_buildup_and_drawdown?rev=1321910222&do=diff build, buildup, K, K20, P, P2O5, phosphorous, potassium, raise, ratio, rates, soil, soil test, soil test levels It is common to hear people discuss fertilizer recommendations in terms of crop removal, plus or minus soil test buildup as if they were somehow disconnected from each other. In fact, they are two aspects of the same subject. Most of us fall into the habit of thinking that we are fertilizing plants. Except for foliar fertilizer or tree trunk injection, we do not fertil…