An investigation entitled “Study on crop-weather calendar of Rice for the district of Faizabad of eastern plain zone of UP” was carried out at the Department of Agricultural Meteorology, ANDUA&T, Kumarganj, Ayodhya. A Crop weather calendar for rice crop has been prepared for district Faizabad through the collection of historical weather data of last 20 years (2000- 2020). The Crop weather calendar for rice was formulated by combining the weekly climatic averages and phenological calendar for the crop along with the optimum weather criteria needed at different phenological stages of the crop. The Climatic normal for rice crop has been taken formthe25th Standard meteorological week to the 43rd Standard meteorological week (from sowing to harvesting). According to the crop weather calendar rice crop, the maximum temperature for rice crop during emergence was 32.7°C and the minimum temperature was 26.8°C, respectively. During these edling phase to transplanting, maximum temperature and minimum temperature were observed 31-34°C and 25-26°C, respectively, while morning humidity and evening humidity were found at 87-88% and 69-76% respectively. Rainfall during transplanting till heading has been found 22.5 mm to 80mm, while during flowering it was found to be 29 mm. During the grain filling stage maximum temperature 34-32°C and minimum temperature 21-22°C, while at the phase of physiological maturity, maximum temperature 34°C and minimum temperature 19-17.5°C were found conducive. For gall midge, maximum temperature 32-35°C, minimum temperature 23-26°C, rainfall of 66-39 mm during 26th to 39th Standard meteorological week with morning humidity 82-88% were found to be conducive for the infestation. Maximum temperature 30-32°C, minimum temperature 14-27°C, morning humidity >90% and rainfall of 23-51mm were found conducive weather requirements for infestation of yellow stem borer. These conditions were found to be prevail during the 28th-29th meteorological week i.e., seedling and transplanting stage of rice crop to 37th to 38th meteorology. week i.e., flowering stage of the crop. Maximum temperature 32-35°C and minimum temperature 24-26°C with morning humidity 96-99% and evening humidity 75-81% were found to be conducive to the incidence of rice hispa insect in paddy.

Crop-weather calendar, Rice, climatic normal

The highest normal rainfall in 29th week 71mm, the highest maximum temperature 35.7°C in the 25th week and the minimum temperature 26.7°C during 25th and 26th week, morning relative humidity was 90.4% in the 33rdweek and evening relative humidity was 50% in the 43rdweek, were suitable climatic normal for rice in the district of Faizabad. During the phase of seedling to transplanting maximum temperature and minimum temperature 31-34°C and 25-26°C, respectively, were found optimum for the better yield of rice in the district of Faizabad. Rainfall during transplanting till heading has been found in the range of 22.5 mm to 80mm. Maximum temperature 32-35°C, minimum temperature 23-26°C, and humidity of 88% were found to be congenial weather requirements for the infestation of gall midge, yellow stem borer and rice hispa Tmax 30-35°C, T Min 14-27°C, RHm> 90% and rainfall 23-51 mm and for Tmax 32-35°C, Tmin 24-26°C, RHm >96% and RHe 75-81%, were found conducive. The crop weather calendar is a comprehensive guide of the weather requirements of the crop that provides information the researcher as well as to the forecaster that will be utilised for the making decisions about the timing of sowing\transplanting, agronomic practices, water management and pest-disease management. The information of congenial weather requirement at every growth stage will help researchers, forecasters and farmers in the management the crop in adverse weather conditions and precautions can be taken to avoid losses.

Anushka Pandey, S.R. Mishra, A.K. Singh, A.N. Mishra, Rajesh Kumar Agrahari and Siddhant Gupta (2023). Study on Crop-weather Calendar of Rice for the District of Faizabad of Eastern Plain Zone of UP. Biological Forum – An International Journal, 15(8): 371-377.