On a large scale for farming, leaving the weeded weed may regrow i think well, i agree with you on the aspect of organic farming, it yields good results at the time of harvest. We have a farm too but our corn has matured and we are selling at the moment, the cassava still has a long way to go, some harvest them in 8 months but our plan is to harvest at a year 2 month. For better and healthy produce.
Am happy of you that your farm produce are doing good, i hope we continue practice organic farming and leave behind the use of chemical fertilisers.