Impact of Climate Change (CC) on Guava (Psidium guajava L.) Phenology, Yield and Commercial Fruit Quality; Prospective Policy

This project studies how climate change affects water and the environment for guava (Psidium guajava L.) crops, especially in South‑East Asian farming basins. In the last few decades, rain patterns have shifted, average temperatures have risen, and extreme events like long summer droughts and erratic monsoon rains have become more common. These changes have strongly altered plant growth and reproductive cycles. We build a clear framework to model these climate‑driven variations by comparing historical weather data with the crop’s specific water needs. By simulating soil‑moisture changes, evapotranspiration rates, and temperature‑related timing shifts, we measure how vulnerable horticultural systems are to water stress. Our method combines hydrological modeling tools with climate‑projection

scenarios to evaluate water availability during the critical flowering and fruiting stages. The results help develop flexible water‑resource management plans, better‑timed irrigation schedules, and forward‑looking agricultural policies aimed at reducing the negative impact of climate variability on high‑value crop yields and regional food security.

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