Preface -- 01 Impact of human activity, climate and other factors on nitrogen in agriculture -- 02 Impact of tillage methods on environment, energy and economy -- 03 Coffee production and climate change impact In Ethiopia -- 04 Impact of climate on coastal agro-ecosystems -- 05 Methanogenesis and methane emission in rice paddy fields -- 06 Physical and biological processes controlling soil C dynamics -- 07 Halophilic microbial ecology for agricultural production in salt affected lands -- 08 Groundwater and agriculture evolution in Central Punjab, Pakistan -- 09 Bioindicators of degraded soils -- 10 Closed and semi-closed systems in agriculture -- 11 Bioenergy and sustainable agriculture.