The following points highlight the top six factors influencing disease cycle of rice. The factors are: 1. Conidial Germination 2. Appressoria Formation and Host Penetration 3. Dispersal and Spread 4. Lesion Growth 5. Sporulation 6. Latent Period. Disease Cycle of Rice: Factor # 1. Conidial Germination: Leaf wetness is required for all of the infection sub processes; the relationship between [...]
In this article we will discuss about:- 1. Introduction to Rice 2. Damage Caused to Rice 3. Occurrence and Distribution 4. Predisposing Factors 5. Control of Diseases. Introduction to Rice: Rice (Oryza sativa L.) is one of the most important cereal crop of the world. About 90 per cent of rice produce in world is consumed only in Asia, while, [...]
The below mentioned article provides notes on diseases severity in wheat. Several diseases rating scales has been proposed by various workers for evaluation of resistance in wheat and barley. Adlakha (1984) gave 0-5 disease severity scale which is less precise to differentiate the available wheat genotypes to foliar blight. Per cent leaf area scale of Conner (1990) and Hetzler (1992) [...]