Dynamics of Anthracnose Disease of Chilli in Responses to Water and Nitrogen Management under Drip and Flood Irrigation
Abstract
Colletotrichum is one of the most important plant pathogens worldwide causing the economically important disease anthracnose in a wide range of hosts including chilli (Capsicum spp.). A field experiment was conducted to investigate the extent and pattern of anthracnose disease (Colletotrichum sp.) in the influences of drip irrigation, spacing and nitrogen fertigation in chili (Capsicum annuum L.). The results revealed that drip irrigation reduced anthracnose disease infestation four times as compare to flood irrigation method. Dripper spacing plays a significant role in reducing the disease incidence, least infestation (4.0%) was noticed in case of dripper placed at 60 cm apart as compared to closer spacing of dripper. Fertigation also reduces disease incidence more than three times as compared to top dressing apart from saving in labour and time. Fertigation resulted in maximum yield (1.20 Kg/m2). The drip irrigation had significantly increased yield (1.50 Kg/m2) and net income (60.30 %) as compared to flood irrigation.
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