Vol. 10, Issue 1 (2022)
Impact of biological and chemical management practices on Alternaria leaf blight disease and physiological parameters of Asalio (Lepidium sativum L.) crop
Author(s): Vibha and SK Pandey
Abstract: Medicinal crops are generally high value crops and are often managed by biological management practices to avoid any pesticide contamination in end product. However, during heavy disease incidence, chemical methods are preferred over biological methods to obtain higher and quality yield. The present study was carried out with objective to compare the impact of both the management practices on disease incidence and physiological parameters of the crop including yield. The biological management practice was conducted in three growing seasons (2014/15, 2015/16 & 2016/17) followed by chemical management practice in next consecutive three years with one overlapping year (2016/17, 2017/18 & 2018/19). It was found that the minimum disease incidence of 39.16 percent was recorded under biological method while 28.25 percent was in chemical method. Similarly, higher seed yield was recorded in chemical method and its best treatment has shown distinct relation with physiological parameters. However, in biological method, lower seed yield was recorded and treatment effects on physiological parameters were not very distinct to one another. The correlation coefficient of percent disease incidence with yield was significantly negative in both the tested management methods. In biological management practice, highly significant positive correlation with transpiration rate and disease incidence was recorded. However, under chemical management practice, yield has significant positive correlation with photosynthetic rate. Although lower yield was recorded in biological method but its impact on disease reduction and on physiological parameters was not very specific that means broad spectrum protection. Hence, minimize the chances of specificity either with pathogen or bioagents residing in plant rhizospere besides excluding the chances of resistance to harmful pathogen.
Pages: 152-158 | 261 Views 52 Downloads
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How to cite this article:
Vibha, SK Pandey. Impact of biological and chemical management practices on Alternaria leaf blight disease and physiological parameters of Asalio (Lepidium sativum L.) crop. Int J Chem Stud 2022;10(1):152-158.
