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Crop and Soil Responses to Fertilization with Distillers’ Grains–Derived Manure in a Saskatchewan Soil

Alotaibi, Khaled D., Schoenau, Jeff. J., Hao, Xiying
Communications in soil science and plant analysis 2015 v.46 no.22 pp. 2847-2865
barley, cattle, field experimentation, manure spreading, nitrate nitrogen, nitric oxide, nitrogen, phosphorus, soil, straw, Saskatchewan
A 2-year field trial was conducted to evaluate crop and soil responses to application of manure from cattle fed distillers’ grain (DGM) in comparison with manure from cattle fed regular barley grain (BGM). Manure addition in general promoted grain and straw yield and increased plant nitrogen (N) and phosphorus (P) uptake in both years by approximately 30–50%. In the first year, effect of manure type on crop responses was insignificant, which is consistent with the similar chemical composition of both manures. In the second year, P recovery was greater in DGM treatments, presumably related to a relatively greater P in DGM. Manure application in general increased soil residual nitrate nitrogen (NO ₃– N) and available P contents at 0–15 cm deep. The high background fertility of studied soil together with the excess moisture during the second year may have masked the significant effects of manure type on most crop and soil responses during this study.