Assessment of seasonal efficacy of different evaporation retardants in semi-arid tropics

作者：Jat M L^*; Sammauria R; Sankar G R Maruthi; Kothari A K; Sharma S K; Balyan J K; Mishra P K

来源：Journal of Agrometeorology, 2010, 12(2): 225-228.

• Seasonal efficacy
• evaporation retardants
• poly films
• maize stover
• correlation

An experiment was conducted in 2007-08 at Arjia, Rajasthan to evaluate the efficacies of different evaporation retardants viz., Maize stover (6 kg m(-2)), Burnt oil (2 mm thick film), Poly film (50 micron), Cetyle alcohol (2.2 kg ha(-1)) and Control in reducing evaporation from surface of water bodies. Results revealed that there was significant relation between evaporation retardants and control treatments in pre-monsoon, monsoon and post-monsoon seasons. Due to application of different evaporation suppressants, on an average, maize stover resulted in lowest evaporation of 2.75 mm day(-1), followed by poly film (2.94 mm day(-1)) and burnt oil (3.89 mm day(-1)). As compared to control, cetyle alcohol as surfactant resulted in the lowest mean reduction (31.3%) in evaporation. On an average, the maize stover caused mean reductions in evaporation to the tunes of 59 and 58% over different seasons in comparison with open pan evaporation and control treatments, respectively. Thus it is concluded that application of maize stover is proved to be the most effective method for suppression of evaporation from free-water surfaces.

• 出版日期2010-12