Today, I took some new pictures of my trials with plastic bottles. I feel very happy about the outcome. This is clearly a fantastic way of growing plants with a strict minimum of water. I came to the conclusion that this technique belongs to the best practices to grow all kinds of crops in the drylands. It can certainly play an important role in food security, particularly in regions where irrigation water is scarce. One can grow vegetables, fruit producing species and even young trees in plastic bottles.
Later on, the young trees can easily be planted by simply cutting the plastic bottle open at two opposite sides, bending the plastic wall over to liberate the rootball (to be surrounded with the soil in the plant pit) and bury the complete bottle.
Thus, we can not only recycle the plastic bottles during a certain period, but also eliminate them by simply burying them when planting the young trees.
A nice way to take care of our environment !
Of course, the same can be done with plastic bags.