Punjab Agriculture Department (PAD) has advised the cotton growers to focus on better management of the crop as effects of 16 percent water shortage in the canals of the province are visible on the crop. A spokesman of the department in an advice issued here on Wednesday urged the cotton growers to adopt the method of 'water scouting' to inspect the crop situation and then irrigate the fields. He advised the growers to inspect the field from three different places in the morning.