A QUICK-TEST PROCEDURE FOR SOIL AND PLANT-TISSUE NITRATES USING TEST STRIPS AND A HAND-HELD REFLECTOMETER

[11] SHAEFER NL, 1986, COMMUN SOIL SCI PLAN, V17, P937

[12] SMITH GR, 1975, ANAL LETT, V8, P503

[13] STEELE RGD, 1980, PRINCIPLES PROCEDURE

[14] Withers N. J., 1982, Proceedings, Twelfth Annual Conference, Agronomy Society of New Zealand, V12, P41

[15] Withers N. J., 1984, Proceedings, Agronomy Society of New Zealand, V14, P17

[16] 1988, IN PRESS J SERIES PE, V7858

[11] SHAEFER NL, 1986, COMMUN SOIL SCI PLAN, V17, P937

[12] SMITH GR, 1975, ANAL LETT, V8, P503

[13] STEELE RGD, 1980, PRINCIPLES PROCEDURE

[14] Withers N. J., 1982, Proceedings, Twelfth Annual Conference, Agronomy Society of New Zealand, V12, P41

[15] Withers N. J., 1984, Proceedings, Agronomy Society of New Zealand, V14, P17

[16] 1988, IN PRESS J SERIES PE, V7858