Again and again, remedying nutrient deficiency comes top when humanitarian priorities are ranked according to cost benefit analyses.

Plants produce flavonoids as a defence mechanism; they are triggered by nutrient deficiency.

The program looked at nutrient deficiency in algae, because they wanted to study the lipid trigger.

Chlorosis can be caused by a nutrient deficiency of ironcalled iron chlorosisor by a shortage of magnesium or nitrogen.

Even with adequate water and sunshine, nutrient deficiency can limit growth.