Some Practical Application Of Weather Data
Prostitution of rainfall within a season and the frequency of occurrence of dry speels of different durations can help to select the optimum time of planting and fertilizer application. If the probable dates of such saving irrigation, under taking or wittroiming of a nitrogen top dressing car also be made with greater confidence.
Temperature and humidity:
Temperature as the dominate factor controlling rate of development. The diurnal temperature cycle is more important than either the seasonal cycle or random effects of weather in the SAT (Monteeith, 1977) Even more important for plant growth processes and incidence of pests and diseases are the effects of microclimate. Humidity is also an important agro climatic factor because it is a major determinant of evaporation and incidence of pests and diseases. Nair et al. (1995) studied the influence of meteorological parameters on the incidence of shoot fly on Kharif sorghum order field conditions. They closer that egg laying and population dynamics stowed highly significant corretation with meteorological parameters like temperature, relative humidity, bright moisture tours and rainfall intensity while dead heart formation was not correlated
The incidence of powdery mildew on grape appeared early and more vigorously where relative humidity was high due to irrigation at shorter intervals (Chavan et. al., 1995). The temperature in the range of 11.8 to 32.42 C and relative humdity) 58.4% favored the development of powdery mildew. Wereas, temperature below 8.6 and above 34.09 C and relative humidity below 47.4% showed zero rate of multiplication indicating that disease did not multiply though, it existed. The incidence and multiplication was rapid in the months of December and Jawary when the climate was cool and humid.