EVALUATION OF SOIL AND PETIOLE SAP NITRATE QUICK TESTS FOR BROCCOLI IN QUÉBEC.
This study was conducted to evaluate the potential of a quick test method, using commercially available nitrate test strips and a hand-held reflectometer, to assess the N status of petiole sap and soil in commercial broccoli fields.
Experiments were conducted at two locations during the 1996 and 1997 growing seasons with factorial combinations of three and four N rates at planting and five weeks after planting, respectively.
The use of quick nitrate tests on soil samples at planting was appropriate for adjusting initial N applications according to levels actually present in the soil.
Petiole sap quick test results were related to N fertilization rates for both application dates.
Also, quick N test data for sap samples were related to yield and head susceptibility to hollow stem, and have shown potential to quantify appropriate side-dressed N applications.
Coulombe, J., Villeneuve, S., Lamy, P., Yelle, S., Bélec, C. and Tremblay, N. (1999). EVALUATION OF SOIL AND PETIOLE SAP NITRATE QUICK TESTS FOR BROCCOLI IN QUÉBEC.. Acta Hortic. 506, 147-152
DOI: 10.17660/ActaHortic.1999.506.20
https://doi.org/10.17660/ActaHortic.1999.506.20
DOI: 10.17660/ActaHortic.1999.506.20
https://doi.org/10.17660/ActaHortic.1999.506.20
506_20
147-152