Dynamic Interplay: Seasonal Variation and Growth Stage- Dependent Nutrient Dynamics in Grapevine Physiology and Their Implications for Fruit Quality and Yield Optimisation

Abstract

This study investigated the variation in nutrient content in grape petioles and berries throughout the
growing season. Seasonal variation and stage-wise changes in grape fruit yield and quality were correlated
with a corresponding nutrient concentration in the plants and berries. The results show that, among
medium vines, Perlette exhibited lower plant and fruit characteristics than Anab-e-Shahi. Among the
growth stages, the highest was noticed in D9 and the lowest in D1. The study of grapevine development and
nutrient dynamics provides a comprehensive understanding of the intricate relationship between vegetative
growth and fruit development, offering crucial insights into factors that significantly affect grape quality
and yield. The analysis of key parameters such as shoot length, trunk girth, and fruit dimensions, along
with the dynamics of fruit weight and number, emphasises the importance of early-season growth and its
overarching influence on overall vine productivity. Varietal distinctions, notably between Anab-e-Shahi
and Perlette, manifest in unique growth patterns and fruit characteristics. In addition, the investigation
delves into the temporal progression of sugar content, identifying a pivotal phase marked by rapid
escalation followed by a subsequent decline. The study extends its scope to nutrient dynamics, exemplified
by alterations in nitrogen, phosphorus and potassium concentrations in leaf petioles, further enriching
the holistic comprehension of grapevine physiology. The cumulative findings offer valuable insights for
vineyard management practices aiming to optimise grape quality and yield.