EFFECT OF WEATHER PARAMETERS ON THE PRODUCTION OF CEREAL CROPS IN SOLAN DISTRICT OF HIMACHAL PRADESH

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dc.contributor.advisorAGGARWAL, R.K.
dc.contributor.authorELIBARIKI, RAHELI
dc.date.accessioned2016-11-18T12:11:16Z
dc.date.available2016-11-18T12:11:16Z
dc.date.issued2013
dc.description.abstractABSTRACT The present investigations entitled “Effect of Weather Parameters on the Production of Cereal Crops in Solan district of Himachal Pradesh” was conducted during 2012-2013 in the Department of Environmental Science, Dr. Y. S Parmar University of Horticulture and Forestry, Nauni, Solan. Weather data for the period (1984 - 2011) and the data of cereal crops for the period (1996-97 to 2010-11) were analyzed. To compute the trends of weather parameters for annual, seasonal, monthly and weekly data, measures of central tendency and variation (mean, standard of deviation, Skewness and Kurtosis), regression coefficient whereby different functions including quadratic, cubic, compound, growth, exponential and logistic functions were fitted and the best fit functions were selected on the basis of R2 value and Sen’s estimate analysis was used to find out the trends of weather parameters which stabilize the data in the form of median values. Effect of weather parameters on crops yields were carried out using regression analysis whereby each individual weather parameter was correlated with crop yields and also multi-linear regression (combinations of all the selected weather parameters) equations were obtained. The results of variability analysis revealed no significant trends for the selected weather parameters and also kurtosis and Skewness did not show any normality assumptions. In case of regression analysis cubic and quadratic functions were found to be the best fit for the selected weather parameters. In annual analysis the highest R2 value was 0.6 in case of maximum temperature, while for all other weather parameters the R2 value varied between 0.06 – 0.40. Sen’s estimate analysis indicated increasing trend of maximum temperature by 3.0oC, minimum temperature by 0.5oC and decreasing trend of rainfall, relative humidity and sunshine hour. Analysis of relationship of crops yields with time also did not show any significant trend in regression analysis, however, in Sen’s estimate all the selected crops showed increasing trend. Effect of individual weather parameters to crops yields found to be non- significant, however, in multiple-linear regressions analysis effect of weather parameters on crops yields found to be significant with R2 value of 0.70 for wheat, 0.60 for rice and 0.50 for maize, indicating thereby that crops yields are influenced by combinations of weather parameters not a single weather parameter.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/86248
dc.language.isoenen_US
dc.subForestry
dc.these.typeM.Sc
dc.titleEFFECT OF WEATHER PARAMETERS ON THE PRODUCTION OF CEREAL CROPS IN SOLAN DISTRICT OF HIMACHAL PRADESHen_US
dc.typeThesisen_US
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