Summary
Different testing methods to measure solidity and dry matter content of onion bulbs were examined. The correlation coefficients between the characters determined were calculated. No strong correlations were found between the results of the different methods of measuring solidity. The refraction value of the press juice gives reliable information on the dry matter content of the onion bulb.
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Nieuwhof, M., De Bruyn, J.W. & Garretsen, F. Methods to determine solidity and dry matter content of onions (Allium cepa L.). Euphytica 22, 39–47 (1973). https://doi.org/10.1007/BF00021554
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DOI: https://doi.org/10.1007/BF00021554