In table grape production, boron is one of the most vital, yet often overlooked, micronutrients.
Although it is required in small quantities, its impact on yield, fruit quality, and pollination is substantial.
Pieter Botha, agronomist at Yara Africa Fertilizer, shared key insights into the importance of boron, its behaviour in the plant-soil system, application strategies, and considerations for long-term management.
BORON’S IMPORTANCE
Boron is one of 12 plant-essential nutrients and is specifically classified as a micronutrient. In grapes, however, boron – along with zinc – is required in greater quantities than other micronutrients, due to its importance for growth, fruit set, yield, and grape quality. Table grapes typically use anything between 150g/ha and 300g/ha of boron annually, but the actual requirement varies depending on soil type, cultivar, planting density, vigour,…