C.G. Guttridge

TL;DR: This paper found that adding extra calcium to the nutrient solution increased the calcium concentration in the proximal, but not in the middle or distal, segments of the tomato fruit, supporting the hypothesis that a positive root pressure at night promotes transport of calcium into tissues and organs that have restricted transpiration.

TL;DR: In this article, a localised calcium deficiency causing malformation of emerging leaves was induced by high relative humidity and alleviated by diluting the nutrient solution or by reducing the level of potassium, magnesium or nitrate in otherwise standard solutions.

TL;DR: In this article, it was shown that drops of aqueous solutions of calcium salts (but not of boric acid) applied to buds and emerging leaves greatly reduced or prevented tipburn.

TL;DR: Fluorescent lighting, with low emission in the far red spectral region, and red light from filtered fluorescent lamps inhibited flower formation, promoted runnering, increased laminae sizes and gave moderate increase in petiole length when given at low intensity from midnight to dawn, but not (or very much less so) when given from dusk to midnight, following a short main light period as discussed by the authors.