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Search results on 05/26/13
10338. Morrow, L.. 1992. Chloride fertilizers.. Growers Guide, Feb. 1992, p.A6.
Chloride is provided when KCl fertilizers are used. It affects photosynthesis, enzyme activation, cation transport, stomatal activities and other processes. In soil, Cl inhibits the conversion of ammonium to nitrate. This maintains a lower pH near the root. Cl increases the number of non-pathogenic organisms in the rhizosphere. Cl competes with nitrate for plant uptake, and reduces plant nitrate levels, which can also reduce certain plant diseases. Take-all, tanspot, stripe rust, septoria, leaf rust, and common root rot have all bee suppressed by chloride.
9552. Bonczkowski, L.C., R.E. Lamond and D.A. Whitney. 1988. Effects of chloride rates and sources on winter wheat in Kansas.. Kansas Fertilizer Research p. 7-12.
For wheat and some other cereal grains, chloride has been reported to have an effect on plant diseases, either suppressing the disease organism or causing the plant to be able to withstand infection. It is hypothesized that yield increases are due to these effects. Researchers from several states have been able to show yield increases from chloride-containing fertilizers. The most common source is potassium chloride. In many cases, soil test potassium levels are high, and most soil test recommendations call for no additional K; however, when small increments of KCl are used, some yield increases have been reported.