Growing vegetable crops in winter in Canada is now an established practice in the sense that we know how many lights should be installed and how much light can be delivered to plants. Good information is available on a number of micromoles needed forleafy and fruiting crops and what is a good Daily Light Integral (DLI). With the arrival of LED lights we heard the term "top lights" and "inter-light."I still see crop management problems during winter months and they are primarily related to us not thinking about the plants enough when lighting is applied.
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