During a period of drought, is it better to water deeply at one place in the root zone, or spread it out with a lighter watering? I water some of my one and two year old trees pouring from 20-liter plastic cans (no hose to reach).
It's not really practical for me to give each young tree more than one 20-liter can of water per week. I'm trying to maximize water uptake by the tree, but also encourage deep roots. The soil is clay-loam and soaks up the water quickly in most places. Most of these trees were planted 9 or 21 months ago at the start of the rainy season. So, pour it one spot or spread it around under the tree?