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India: Naturally ventilated polyhouses found as best greenhouse for hot, arid region

The performance of a cucumber type evaluated under three protected structures has been monitored by a group of researcher.

Their research includes naturally ventilated polyhouse (NVP), insect proof net house (INH) and shade net house (SNH) at Jodhpur, Rajasthan in hot arid region of India

"The photosynthetically active radiation (PAR) inside these structures during cropping period ranged from 154-842 µmol m-2 s-1 was much lower than the outside. Among structures, air temperature was 1.2°C and 0.7°C lower while relative humidity (RH) was 17 and 4 per cent higher in NVP and SNH respectively as compared to INH," they conclude. 

"Relatively low air as well as soil temperature, coupled with high RH and optimal radiation in NVP led to better plant growth and physiological activity which resulted in 42 and 142per cent higher yield than INH and SNH, respectively. Hence, it can be recommended that NVP is the best low-tech protected structure which modifies the microclimate favouring successful cultivation of greenhouse cucumber in Indian hot arid regions." 

Read the complete research here.  

Khapte, Pratapsingh & Meena, H M & Kumar, Pradeep & Burman, Uday & Saxena, Anurag & Kumar, Praveen. (2021). Influence of different protected cultivation structures on performance of cucumber (Cucumis sativus L.) in Indian hot arid region. Journal of Agrometeorology. 23. 265-271. 

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