burner Posted February 1, 2016 Report Share Posted February 1, 2016 Hey all, been surfing the net again, this time, came across an interesting article in relation to environmental factors that influence sex in early stage cannabis plants.I'm assuming this will be more beneficial to growers that use regular seeds, as opposed to most of us that pop feminised beans, although it may help guarantee your feminised remain just that?....Ok, this is also focused on young plants/ seedlings, more precisely, once the third pair of true leaves have formed.Starting with nutrients, at this stage of the plants life, more nitrogen will most likely produce fem, lower nitrogen will produce male.An increase of potassium will promote more male hormones, a decrease will promote fem.High nitrogen, low potassium= higher chance of fem, the reverse for male.Temperature and humidity is also a factor, low temps for fem, warmer temps for male, whereas higher humidity promotes fem, and lower humidity promotes male.Growing Medium also factors, low moisture levels at this stage promote male.Light spectrum, more blue promotes female, whereas red promotes male, and finally, daylight hours.Fewer daylight hours, for example, 14hours, promote female, longer daylight hours, 18+, promote male.Now, before the question is asked, in relation to temps and humidity, I can only assume that the author was basing them on current optimum grow room levels, but like I said, is just an assumption. They kind of missed that bit in the article, was most likely stoned? Who am I kidding, Jorge Cervantes is always stoned..... Quote Link to comment Share on other sites More sharing options...
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