Experiments on how soil fertility limits terrestrial NPP demonstrate that _____ constrain(s) NPP.

Question

Quizplus · Accepted Answer

Experiments have shown that both nitrogen and phosphorus play a role in limiting terrestrial net primary productivity (NPP). In some cases, both nutrients need to be added for NPP to increase significantly, indicating that they are co-limiting factors. While micronutrients may also be important for plant growth, they are not typically the primary limiting factor for NPP.

Experiments on How Soil Fertility Limits Terrestrial NPP Demonstrate That