Why My Guava plant is drying?

Question

its old leaves are going dry and new leaves’ ends are black. I need to stop it to full dry?

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Answer 1

From the photos, with the drying of leaf tips and leaf edges, I suspect water deficit/ drought stress. It needs more watering, deeper and more frequent. And the yellowing of the leaves indicates nutrient deficiency.

Soil fertility and water management are vital for plant health, flowering and fruit development.

Water a wide area not just near the tree trunk, water the entire area of the absorbing root zone which spreads as far as the foliar canopy and more. Water deeply to wet the soil a minimum of six inches, preferably to 10 - 12 inches.

Mulch the soil surface to help retain soil moisture.

Fertilize spring and summer with a slow release complete organic fertilizer.

https://www.gardeningknowhow.com/edible/fruits/guava/growing-guava-fruit-trees.htm