About 2000 kg of wheat straw was applied to 1 ha of land. Tests showed the soil

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About 2000 kg of wheat straw was applied to 1 ha of land. Tests showed the soil to contain 25 kg nitrate-N per ha. The straw contained OA% N. Now much N was applied in the straw? Explain why two weeks after the straw was applied, new tests showed no detectable nitrate N. Show your work and state what assmptions or estimates you made to do this calculation. 

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The Nature and Properties of Soils

ISBN: 978-0132279383

14th edition

Authors: Nyle C. Brady, Ray R. Weil

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