A well-planned program<\/h3>\n
Success with plant growth regulators is based on a well-planned out program that incorporates PGRs into your production practises rather than a hit and miss approach. Growth regulators should be used as part of a preventative program where early applications coincide with the start of stretch. I prefer to shape a plant rather than holding a plant that got away from me. To shape a plant, low rates of PGR are applied more frequently at early stages. This approach is most effective if you have reliable records with dates of treatments, with environmental conditions at the time of application and with the response of the plants to the chemicals applied.<\/p>\n
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I would now like to review some important factors you need to consider when applying PGRs.<\/strong><\/p>\n There is no single product that is effective on all crops. Also know your varieties i.e. slow versus fast growing varieties of the same species. Varying humidity, light and temperature regimes can create different responses to the same rate of PGR. Focus also on the immediate plant environment, i.e. moisture content of the substrate, the soil pH and health of the developing roots. Certain environmental conditions, namely temperature and humidity, optimize leaf uptake.<\/p>\n This refers to the sensitivity of plants to PGRs and the persistence of the growth inhibiting effect after the initial application. PGRs can be classified as having a low, moderate or high activity level. Target the right absorption area. There is sufficient information available for each product indicating which part of the plant to target to maximise absorption rates. In many instances, incorrect dosage can be the source of poor results. Rates used by southern growers have caused many a stunted plant when used by northern growers. Perform rate trials to determine which rate is best in your environment.<\/p>\n With the newer high activity level PGRs such as Bonzi and Sumagic, correct volume per square foot is critical to avoid overdose and negative results. Regardless of the mode of application, it is important that coverage be consistent throughout the greenhouse.\n<\/ul>\n <\/div><\/p>\n\n
Know your plants and the PGRs that are available<\/h4>\n<\/li>\n
\n<<\/p>\nClosely monitor environmental conditions<\/h4>\n<\/li>\n
The \u201cActivity level\u201d<\/h4>\n<\/li>\n
\n<<\/p>\nDifferent means of absorption<\/h4>\n<\/li>\n
\n<<\/p>\nRate of application<\/h4>\n<\/li>\n
Consistency and Uniformity<\/h4>\n<\/li>\n
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