Here's what we ( My Brother) did! In Georgia we had property up on a hill! So water was a challenge most of the time. But we had roofs
we took gutter then made a system to trap every drop of water to our reservoir. In the beginning it was all 55 gallon drums .. Ended up with one 450 gal tank . Or cattle trough.. We came out the bottom with a ˝ inch pipe into a solenoid 110 volt ! It was a simple open and close valve to that we hooked up a appliance timer from a hardware store . Same thing that you use to turn on lamps in you house . I think it cost 3.99 . Now they are about 8 bucks..
OK from our ˝ line we used 1/8 inch black plastic tubing to drip water to the plants we had.. The timer went on one time during the heat of the day ( 1:00 o’clock for 15 minutes.. we had wood chips around the plants and the line was under the chips.. Only thing that we had problems with was alga from sunlight . So we installed a top .. There were not so many liquid fertilizers back then but we made our own using beer and ammonia ,, Hmm now I can remember the last ingredient.. But there are now plenty of home brew liquid fertilizer recipes online .. Plus we had a constant supply of cow chips along with chicken droppings. We always dried the droppings and composted them in some Georgia clay and wood chips .
I am sure a Musa will use all the water you can give it out in Texas .Especially during the summer.. All ya need to do is regulate the amount of water your going to use per application . We added Palmolive soap the our water about a ˝ quart to a full tub that was to allow the water to run down into the ground. If you ever been in Georgia and pick up the red clay soil you will understand the reason for the soap