Organic farming appears to be effective during extremely dry periods. The strength lies in soil life, such as worms. Worms keep the soil loose and dig long and deep corridors. Groundwater can rise through these corridors, where the roots of the crops can often reach. To maintain the soil life properly, it is important to use natural fertilizers and organic matter. This will loosen the soil and worms love it. Loose soil can also retain water better.
Crops in organic farming tend to grow slower and make deeper roots. Especially if you do not use large and heavy agricultural machines that flatten the ground. Pressed soil can retain less water. Also worms often do not survive.
Source: rtv oost