Even before this point is reached, the plant will grow slower. When plants are irrigated in arid areas, the salts from the irrigation water become concentrated in the soil and the soil can become "saline" and no longer fertile. So the effect you have observed is very important in some areas of the world. read more
Effect of temperature on nitrification as reported by Borchardt.1 ° Figure 1-6 indicates that there was apparently no inhibition of nitrification occurring at DO levels exceeding 1 mg/1. Laboratory. The laboratory studies were concerned with determining the effect of tempera- ture and pH under carefully controlled conditions. read more