References
- Prasad , M. and Spiers , T. M. 1985 . A rapid nitrate sap test for outdoor tomatoes . Scientia Hort. , 25 : 211 – 215 .
- Prasad , M. and Ravenwood , I. C. in press . Evaluation of a rapid sap nitrate test for young kiwifruit vines . Comm. Soil Sci. Plant Anal. ,
- Prasad , M. and Spiers , T. M. 1984 . Evaluation of a rapid method for plant sap nitrate analysis . Comm. Soil Sci. Plant Anal. , 15 : 673 – 679 .
- Prasad , M. , Spiers , T. M. , Ravenwood , I. C. and Johnston , R. W. 1981 . Soil testing of horticultural substrates . Comm. Soil Sci. Plant Anal. , 12 : 825 – 838 .
- Terman , G. L. , Noggle , J. C. and Hunt , C. H. 1976 . Nitrate‐N and total N concentration relationships in several plant species . Agron. J. , 68 : 556 – 560 .