Effect of EC, and Cl and NH4 concentration of nutrient solutions on nitrate accumulation in lettuce / J. van der Boon, J.W. Steenhuizen and E. Steingröver

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Effect of EC, and Cl and NH4 concentration of nutrient solutions on nitrate accumulation in lettuce / J. van der Boon, J.W. Steenhuizen and E. Steingröver 
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Effect of EC, and Cl and NH4 concentration of nutrient solutions on nitrate accumulation in lettuce 
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