Effects of Chlorocholine Chloride and Water Regime on Growth, Yield, and Water Use of Spring Wheat

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Abstract
When CCC was applied as a spray to the leaves of Brassica oleracea L. (Brussels sprout) grown in pots, plant height and mean internode length were reduced. The effects appeared more slowly and were less pronounced than those previously observed when CCC had been applied to the soil; other differences were that root growth was not inhibited, stem weight was only significantly reduced at the highest rate of application (2 per cent), and stomatal number per unit area of lower leaf epidermis was not affected. In common with soil applications, leaf thickness, stem diameter, and the percentage moisture contents of the leaves were all increased by foliar applications.In a further experiment the progress of wilting was observed in untreated plants and in plants treated with CCC applied either to the leaves or to the soil. The rates of water loss and the moisture contents of the leaf laminae of the treated plants, after a period of wilting, were not significantly different from the controls. The treated plants, however, looked less ‘wilted‘ for the change in angle of the leaf lamina to the stem was less and their leaves were therefore held more upright.

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