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Subject: Agricultural Meteorology × Author: Amanpreet × Start date: 2018 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Study on microclimate and its effect on growth and yield of strawberry under open and controlled conditions
    (CCSHAU, 2019) Amanpreet; Ram Niwas
    The field investigation on “Study on microclimate and its effect on growth and yield of strawberry under open and controlled conditions” was carried out under polyhouse and open field at PFDC, Department of Horticulture, Gate no. 3, Chaudhary Charan Singh Haryana Agricultural University, Hisar, during Rabi season 2018-19. The main plot treatments consisted of four dates of planting (15th September, 25th September, 5th October and 15th October) and sub plot treatments consisted of three varieties (Chandler, Winter Dawn and Winter Star). The thirty-six combinations were evaluated in split plot design with three replications under open field and thirty-six combinations were evaluated in completely randomized design with three replications in polyhouse. Temperature and relative humidity were higher inside polyhouse by 2-5o C and 6-13 % respectively. Maximum radiation absorption was in strawberry crop planted on 15th September and in variety Chandler. HUE and RUE were higher in the early planted crop i.e. 15th September under both conditions. All growth parameters were found maximum in crop planted on 15th September. When growth parameters were compared, it was found that crop planted inside the polyhouse was superior in all aspects including yield parameters. Among different strawberry varieties, Winter Star consumed highest heat units, heliothermal units and photothermal units as compared to Chandler and Winter Dawn under both conditions. HUE, RUE and yield parameters were highest in Chandler variety. LAI was maximum at 90 DAP and dry matter at maturity under both conditions. Also, Chandler proved to be superior in both parameters. Radiation interception was maximum in open field conditions and at the top of the crop canopy. The correlation and regression analysis were carried out to study the relationship between yield attributes and microclimate of strawberry varieties. Most of the yield parameters were positively correlated with temperature and relative humidity. In variety Chandler, 96 per cent variability in fruit yield/plant was explained by mean temperature and mean relative humidity under open field conditions.