Ocimum Basilicum Case Study
Ocimum basilicum, commonly known as ‘Indian basil’, is an indigenous south Indian species (Bhasin, 2012). Among over 150 basil species belonging to the genus Ocimum, two most widely grown species for essential oil production are holy basil (Ocimum sanctum L.) and sweet basil (Ocimum basilicum L.). Ocimum basilicum, an erect highly branched aromatic perennial herb of family Lamiaceae is well known for its sweet basil oil and is widely distributed throughout India. This species is believed to be originated in India and some neighbouring countries. In the plains of north India, south India and Assam it may; however be grown as both Kharif and Rabi crops. In actual practice, about 30-35 Kg/ha oil, corresponding to 12-13 Kg of flower oil and 18-22
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bullita was observed throughout the year. However, its incidence was highest during the months Au¬gust to December, moderate from January to April and low from May to June. The pest hibernates in adult stage in scar¬city of food and adverse (cold) conditions. Highest popula¬tion 67.3 (range 60-72) was found in September (Sathe, 2014).
Temperature and humidity both climatic factors influence the population built up and survivability of lace bug at Saharanpur (Jain and Dhiman, 2011). The lace bug preferred to live and feed on O. basilicum throughout the year except during autumn season. In winter, few nymphs were seen in aggregation in the cavity of rolled leaves to avoid cold weather.
Dhiman and Dutta (2013) reported that at Saharanpur the population of C. bullita infest the host plants during July to November and from April to May. The population built up started on O. basilicum during first week of April and attained peak in September – November.
C. bullita can be effectively controlled by spraying the crop with 0.03 Azadiractin or Malathion 0.03% or Phosphamidon 0.02% or Neem oil 0.5 (Sathe et al., 2014). In Bihar, for effective control of C. bullita, spraying of dimethoate @ 1 ml/l of water at fortnightly intervals from last week October to mid-January has been reported (Anonymous,
bullita was observed throughout the year. However, its incidence was highest during the months Au¬gust to December, moderate from January to April and low from May to June. The pest hibernates in adult stage in scar¬city of food and adverse (cold) conditions. Highest popula¬tion 67.3 (range 60-72) was found in September (Sathe, 2014).
Temperature and humidity both climatic factors influence the population built up and survivability of lace bug at Saharanpur (Jain and Dhiman, 2011). The lace bug preferred to live and feed on O. basilicum throughout the year except during autumn season. In winter, few nymphs were seen in aggregation in the cavity of rolled leaves to avoid cold weather.
Dhiman and Dutta (2013) reported that at Saharanpur the population of C. bullita infest the host plants during July to November and from April to May. The population built up started on O. basilicum during first week of April and attained peak in September – November.
C. bullita can be effectively controlled by spraying the crop with 0.03 Azadiractin or Malathion 0.03% or Phosphamidon 0.02% or Neem oil 0.5 (Sathe et al., 2014). In Bihar, for effective control of C. bullita, spraying of dimethoate @ 1 ml/l of water at fortnightly intervals from last week October to mid-January has been reported (Anonymous,