Editorial Type:
Article Category: Research Article
 | 
Online Publication Date: 01 Jun 1994

Influence of Irrigation Water Salinity on Optimal Nitrogen, Phosphorus, and Potassium Liquid Fertilizer Rates for Spathiphyllum ‘Petite’

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Page Range: 104 – 107
DOI: 10.24266/0738-2898-12.2.104
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Abstract

The experiment was a 5 × 5 factorial composed of 5 fertilizer levels and 5 salinity levels applied to Spathiphyllum ‘Petite’. Fertilizer levels were 0, 125, 250, 375 and 500 mg/l (ppm) N from a 24N-3.4P-13.3K (24-8-16) soluble fertilizer. Salinity levels were 0, 500, 1000, 1500 and 2000 mg/l (ppm) from NaCl:CaCl2 in a 1:1 equivalent ratio. Maximum growth was observed at 250 mg/l N and no salts. At the highest salinity level tested (2000 mg/l), maximum growth was observed at 125 mg/l N. Generally, as salinity level increased the measured growth parameters decreased. Leaf calcium, sodium, and chloride increased with increasing levels of salinity in the irrigation water. Leaf nitrogen, phosphorus, and potassium generally increased with increasing levels of fertilizer, but were not affected by salinity levels. It is possible that high sodium and chloride concentration in leaves produced an ion toxicity.

Copyright: Copyright, All Rights Reserved 1994

Contributor Notes

Texas Agricultural Experiment Station publication No. 31263.

2Graduate Student and Professor, respectively.

Received: 27 Sept 1993
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