Predicting the Outbreak of Tikka and Rust in Grountnut (Arachis Hypogaea)

Abstract

Groundnut (Arachis hypogaea) is one among the most important oil seed crop cultivated in India. Tikka leaf spot and Rust are the major disease of groundnut that effects on production and productivity. The prediction was made based on factors such as minimum and maximum temperature, morning and evening humidity, wind speed, sunshine hours that quantifies the disease infestation in groundnut. The relationship between the weather, pest and disease infestation are identified which supports the model to predict the occurrence of the disease. The observations were recorded at an interval of one week from the occurrence of tikka and rust. The percent disease intensity is calculated based on the scale explained by Mayee and Data. The favourable climatic conditions for tikka and rust disease development ranges between 26OC – 31OC and 25OC – 30OC respectively, relative humidity greater than 85%, prolonged heavy rainfall, wind speed and rain. The rules are generated based on the recorded observation and the weather parameters. The main objective is to diagnose the existence of tikka and rust disease coupled with weather parameters.

Effect of Weather Parameters on of Pests and Diseases in Groundnut and Castor in Salem District of Tamil Nadu, India

“…The whiteflies incidence in castor was positively correlated with temperature (0.490967) and rainfall (0.389125) where as lepidopteran pest, S. litura by relative humidity (0.61212) and rainfall (0.49415). The results were in accordance with the findings of Jayanthi et al [6], Ratnapara et al [7], Ruba and Padmapriya [8] and Rahman, et al [9]. The thrips and rot was influenced by relative humidity (0.570641 and 0.469101), but blight was not have any correlation with weather parameters (Table 2).…”