Blutigeroo
Member
This is from Jorge Cervantes book " Marijuana Horticulture The Indoor / Outdoor Medical Growers Bible "
You can download it from here http://depositfiles.com/en/files/0lj6qfs79
Grow more females from seed
Enviromental factors start influencing sex the moment the seedling has three pairs of true leaves (not counting cotyledons).
Enviromental factors that influence sex determination of cannabis include but are not limited to;
Increasing the level of nitrogen makes more female plants. Lower the nitrogen level to create more male plants.
Increase the level of potassium to increase male tendencies ; Lowering the potassium level encourages female plants. A higher nitrogen level and a lower potassium level for the first two weeks increases females.
Low Temperatures increase the number of female plants. Warm temperatures make more male plants. Low humidity increases male plants. Low growing- medium moisture increases males.
More blue light increases the number of female plants. More red light increases male tendencies.
Fewer hours of daylight (e.g 14 hours) increases the number of females , Longer days (e.g 18 hours)makes more male plants.
Stress; any environmental stress tends to yield more male plants when growing from seed.
You can download it from here http://depositfiles.com/en/files/0lj6qfs79
Grow more females from seed
Enviromental factors start influencing sex the moment the seedling has three pairs of true leaves (not counting cotyledons).
Enviromental factors that influence sex determination of cannabis include but are not limited to;
Increasing the level of nitrogen makes more female plants. Lower the nitrogen level to create more male plants.
Increase the level of potassium to increase male tendencies ; Lowering the potassium level encourages female plants. A higher nitrogen level and a lower potassium level for the first two weeks increases females.
Low Temperatures increase the number of female plants. Warm temperatures make more male plants. Low humidity increases male plants. Low growing- medium moisture increases males.
More blue light increases the number of female plants. More red light increases male tendencies.
Fewer hours of daylight (e.g 14 hours) increases the number of females , Longer days (e.g 18 hours)makes more male plants.
Stress; any environmental stress tends to yield more male plants when growing from seed.
