Quantification of microclimate and its effect on yield of field crops under Agri-horti system in Western plain zone of Uttar Pradesh

Abstract

Result revealed that diurnal dynamics of temperature was continuously increasing from morning to noon hrs (07:30 hrs to 13:30 hrs) and highest temperature was recorded at 13:30 hrs (afternoon) due to highest light intensity. Thereafter, temperature was decreased and reaching to the lowest at 17:30 hrs irrespective of crops and height from the earth surface. Highest relative humidity was observed at 07.30 hrs morning and lowest relative humidity was recorded in 13:30 hrs to 15:30 hrs. Thereafter, it again increased from evening 17:30 hrs to morning 07:30 hrs. As per study maximum CO2 concentration was found at 07:30 hrs morning and decreased at 15:30 hrs. This decreasing trend of CO2 concentration after afternoon may be due to enhancement in consumption of CO2 for the process of carbohydrate assimilation through photosynthesis which reached to maximum at 15:30 hrs.