Maintaining Quality In Lettuces During Marketing Through Ethylene Atmosphere Control31 December 2001Improving The Quality And Safety Of Unprocessed And Fresh-Cut Vegetables By Modifying Agents And Biopreservation1 February 2002 Optimum soil pH for crop plants 1 January 2002 Project Code TL00029 Home / Optimum soil pH for crop plantsProject overviewRelated PostsFact sheetOptimum soil pH for crop plants Share