Technical notes. A note on foliar diagnosis of boron deficiency in beetroot

Abstract

A pot trial was conducted with beetroot on Coolum sand to examine the relationship between visual and chemical foliar diagnosis of boron deficiency. Coolum sand is almost completely lacking in major plant nutrients. and in trace elements. An ammonium molybdate spray was given to all plants at an early stage of growth to rule out the possibility of molybdenum deficiency. Leaf analysis for boron was carried out when the roots had reached maximum size.