To use the diaphragm, first cover the inside of it with spermicide. Then insert it into your vagina so that it covers your cervix. You can insert the diaphragm up to 6 hours before sex.
This is where the Kratky method shines. Itâs a technique that allows you to grow hydroponically without electricity, pumps, or wicks of any kind. In fact, you donât even have to change your reservoir or add nutrients. Itâs as close to a completely âhands offâ growing technique as Iâve ever seen.
The quadrat method is used to sample sessile organisms, using a square within which all individuals are counted; extrapolation of the data to the entire habitat results in a population size estimate. The mark and recapture technique is used for mobile organisms; it involves marking a sample of individuals and then estimating population size from the number of marked individuals in subsequent samples.