Yes, it will. Plants need nitrogen to make proteins, and the most abundant protein in plants is RuBisCO - the one that fixes CO2 in the air into carbohydrates t

Yes, it will. Plants need nitrogen to make proteins, and the most abundant protein in plants is RuBisCO - the one that fixes CO2 in the air into carbohydrates to store the energy from sunlight. Most plants have to produce a vast amount of RuBisCO to make up for the fact that photosynthesis is so inefficient. By making it more efficient, we reduce the amount of RuBisCO needed and therefore reduce the nitrogen required. C4 plants are much more nitrogen efficient than C3 plants.