Please use this identifier to cite or link to this item: http://hdl.handle.net/1/3382
Title: The Effect of Irrigation and Nitrogen Fertilizer on Nitrate Nitrogen Concentration in Cotton Petioles
Authors: Lockerby, S.E.
Lyons, D.L.
Clarke, E.L.
Keywords: Irrigation
Nitrogen
Clay soils
Petioles
Cotton
Waterlogging
Moisture content
Soil pore system
Clay
Losses
Soil
Water
Growth
Issue Date: 17-Aug-1988
Abstract: Determination of the petiole nitrate nitrogen concentration (PNN) in the youngest fully expanded leaf (YFEL) of cotton is a useful indicator of plant nitrogen status. In a review of literature Hearn (1981) reported for various phenological stages, l evels of petiole nitrate nitrogen (PNN) adequate for crop growth. These declined from 14000 - 25000 mg kg-1 at first square to 20QO mg kg- 1 at first open boll. He reported a critical level of 2000 mg kg- 1 above which growth would not decline.
URI: http://hdl.handle.net/1/3382
Appears in Collections:1988 Australian Cotton Conference

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