Boron uptake is closely related to the boron concentration of the soil and the rate of water transpiration by rice plants. This means that rice plants can be particularly susceptible to boron toxicity.
Olives have been cultivated for at least 5,000 years—for their oil and their fruit. Yet, all this time, the olive tree itself was a stingy, hostile, uncooperative friend to man. The yield per tree was always miserably low until
la olivicultura moderna.