Does ZT in any way affect the Phalaris minor population over years?
Yes, it reduces the population of Phalaris minor. The seeds of the Phalaris minor germinate only when it lies in upper 5 cm soil layer Therefore, in no till field, seeds buried in deeper soil layers do not germinate. Phalaris minor seeds present in surface layers germinate when they get moisture at the time of first irrigation. Study revealed that on an average 30-40 % less Phalaris minor population is observed in no till condition compared to conventional tillage. It is observed that population of broad leaf weeds increases in no-till system.
