Increasing female ratios

INCREASING YOUR CHANCES OF FEMALES
A well maintained grow room with plants growing in optimal conditions will naturally produce more females than males. There are some other things you can do to increase your odds of improving your male to female ratio. These are as follows:
• High nitrogen levels in vegetative growth have shown to produce more females than males. This might be a good to reason to use feeds with a higher l\l to P and K ratio rather than foods with an equal N to P and K ratio. Remember though that plant burn will only lead to stress and this will produce more males and hermaphrodites than females.

• High potassium levels in vegetative growth and flowering tends to produce more males than females. Keeping your potassium levels down is another good reason to choose a food with a higher N than P and K ratio where the P and K ratios are even, or where the K ratio is kept lower than P. Remember though that lack of K can cause plant stress due to this nutrient deficiency and this can cause more males and hermaphrodites to appear than females.
• Cannabis plants grow best under conditions of between 40 and 80 percent relative humidity (rH). In the higher rH range of between 70 and 80 your female to male ratio may increase.
• Cannabis plants grow best at 75 degrees Fahrenheit. If you do not allow the temperatures to increase beyond this you will improve your chances at getting more females than males. If the environment is supplemented with C02 the temperature may be allowed to increase as far as 95 degrees Fahrenheit.
• Using MH lights in vegetative growth will improve your female to male ratio