The PH of a solution can be measured using the H+ ions concentration present in the solution. PH= -log(H+) H+ is the hydrogen ion concentration. or by knowing the OH- ion concentration. PH= 14- (-log(OH-)-log(OH-) is the pOH of the solution.
An avocadoâs exterior can tell a lot about whatâs happening inside. If you pay attention to the clues its color, texture, and firmness provide, you will select a perfectly ripe avocado each time. Below I describe four methods you can use to tell if an avocado is ripe. A. Skin color. An avocado with a darker skin is often riper than one with a lighter skin. 1  Scan the avocados in front of you.  The avocados with darker green-to-black skin colors may be riper than those with with lighter skins.
Season for Planting Hass Avocado. Hass avocados have a dark purple to almost black pebbly skin with excellent flavored fruit. Avocados (Persea spp.) are evergreen trees that grow delicious green fruit that surrounds a large pit or seed. Avocados grow in the warmest regions of the United States. You can propagate trees from seed, but to do so results in trees that vary in quality and quantity of fruit. For these reasons, budding and grafting are common methods of propagation.