1PhD Scholar; Department of Soil and Water Engineering, College of Technology and Engineering, MPUAT, Udaipur, India.
2Professor, Department of Soil and Water Engineering, College of Technology and Engineering, MPUAT, Udaipur, India.
3Scientist, Division of Agricultural Engineering, ICAR-Indian Agricultural Research Institute, New Delhi, India.
4Associate Professor, Horticulture Department, Rajasthan College of Agriculture, Udaipur, India.
5Professor and Head, Department of Soil and Water Engineering, College of Technology and Engineering, MPUAT, Udaipur, India.
*Corresponding author: Dimple *E-mail: dimpibachchan20@gmail.com
Online published on 27 January, 2022.
This study was conducted to study the relationship between capsicum crop evapotranspiration inside (ETCin) and crop evapotranspiration outside(ETCout) the naturally ventilated polyhouse (NVPH) using meteorological parameters. Polyhouse has a straightway impact on air temperature and relativehumidity while it indirectly influences soil temperature and soil moistureinside the structure. Under this study, crop evapotranspiration was estimate by conventional method i.e., obtaining reference evapotranspiration from weather data recorded inside the polyhouse and multiplying it with crop coefficient values of capsicum crop. Reference crop evapotranspiration inside and outside the polyhouse found as 745.19 mm and 590.22 mm, respectively wheeas capsicum crop evapotranspiration inside and outside the polyhouse was 868.40 mm and 694.16 mm, respectively. The results of the study revealed thathe relationship between weekly ETCin and ETCout can be expressed mathematcally as ETCin = 0.84 ETCout. This implies that, there was approximately 15 % lower crop evapotranspiration requirement for the capsicum crop inside the naturally ventilated polyhouse as compared to outside the polyhouse
Naturally ventilated polyhouse, Reference evapotranspiration, Crop coefficient, Crop evapotranspiration
