Abstract
Abstract Symptoms of chlorine deficiency occurred in red clover (Trifolium pratense, L.) grown, in solution culture, in a controlled environment cabinet with its air intake filtered through activated carbon. The first visible symptom was a curling of the leaflets on the youngest leaves. Within a few days, some newly expanded leaflets shrivelled completely, and older leaflets developed a brown necrosis which started at the tip and extended backwards particularly at the margins. Subsequently there was a general stunting of growth and the collapse of some petioles. The results of analysis of deficient plants indicated that the critical concentration of chlorine in the leaf + petiole of red clover was at least 200 μg g‐1 dry weight.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
