The critical period is within the first 4 to 6 weeks of crop establishment. During this period, competition between the crop and weeds for nutrients, moisture and sunlight is high
Nthawi yofunikira kwambiri ndi sabata zinayi kufika zisanu ndi imodzi zoyambilira zokula mbewu. Panthawi imeneyi, mpikizano pakati pa mbewu ndi tchire kupeza michere, chinyezi ndi dzuwa zimakhala zokwera