“... suelo a la penetración. En labranza convencional (LC), hasta 10 cm de profundidad, la densidad aparente...”
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“... in a large area which includes the districts of Bahia Blanca, Villarino, Than and Saavedra...”
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“... tagged urea and ammonium sulfate applied toa Typic Haplus toll in a battery of differential weighing...”
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“...This report is a part of a program aimed to study the nitrogen economy, balance and dynamics...”
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