Study of some climate indicators at the Institute of Animal Science from 1967 to 2013 and their relation with grasses
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Abstract
deviation, variance and coefficient of variation of 0.60, 0.06 and 1.88 %, respectively as well as r = 0.95 (P <0.0001) . The minimum temperature increased from 20.4 °C in the decade 1970-1979 to 23.4 °C in the period 2000-2009, with standard deviation, variance and coefficient of variation of 1.31, 1.71 and 6.09%, respectively as well as r = 0.95 (P <0.0001). Mean temperature increased from 23.8 °C in the decade 1970-1979 to 26.7 °C in the period 2000-2009, with standard deviation, variance and coefficient of variation of 0.66, 0.64 and 2.50 %, respectively as well as r = 0.92 (P <0.0001). During dry and rainy season, indicators had similar performance, but with specific values for each one of them. When applying these results in Cenchrus purpureus, there was a decrease in yield and an increase in height when comparing the decade 1979 versus 2010. The profile of indicators studied in 40 years (baseline) is available and compared with what happened in the period 2010 -2013. Variability of indicators by decade and climate season is known. The presence of climate change is appreciated. There are databases that allow to establish longer-term prediction models and their impact on forage biomass production.
Key words: rain, temperature, seasonal values
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