As with all fruits, when it comes to energy, apple, pear and plum trees rely on mother nature.  Therefore in farming the dominant energy inputs are indirect and come from for the manufacture and transport of fertilisers (specifically nitrogen) and pesticides.  Depending on the crop these can account for as much as 80% of the energy input.  Since Bettina farms organically and therefore does not use chemical fertilisers, pesticides or other agro chemicals, it therefore comes as no surprise that his organic apples, pears and plums are considerably more energy efficient than their non organic counterparts.