A Boron Deficiency In Sisal (Acav,E Sisalana Perrine)

Abstract

During sand culture investigations at Mlingano dealing with the acronutrient status of sisal plants, a new leaf symptom was observed. This symptom took the form of a cracking of the leaf epidermis, but it only occurred on well-developed plants with 25 leaves or more and on plants that were at least 30 cm. high. Plants were affected more or less irrespective of the macronutrient treatment. All these plants received a complete micronutrient solution but the occurrence of the symptom on these large plants suggested that the supply of one of the micronutrients might be approaching a level of deficiency.