Chieko Umetsu

Efficiency and Technical Change in the Philippine Rice Sector: A Malmquist Total Factor Productivity Analysis

Chieko Umetsu, Thamana Lekprichakul, Ujjayant Chakravorty · American Journal of Agricultural Economics · 2003 · 84 citations

Resource Productivity, Productivity Growth, Resource Efficiency +18

Basinwide water management: a spatial model

Ujjayant Chakravorty, Chieko Umetsu · Journal of Environmental Economics and Management · 2003 · 76 citations

Engineering, Water Resources, Water Reallocation +4

Impact of ENSO and the Indian Ocean Dipole on the north‐east monsoon rainfall of Tamil Nadu State in India

V. Geethalakshmi, Akiyo Yatagai, K. Palanisamy et al. · Hydrological Processes · 2009 · 43 citations

Hydrometeorology, Meteorology, Climatology +15

Impact of the December 2004 tsunami on soil, groundwater and vegetation in the Nagapattinam district, India

Takashi Kume, Chieko Umetsu, K. Palanisami · Journal of Environmental Management · 2009 · 33 citations

Groundwater Quality, Hydrogeology, Tsunami Science +8

Sustainable farming techniques and farm size for rice smallholders in the Vietnamese Mekong Delta: A slack-based technical efficiency approach

Le Canh Bich Tho, Chieko Umetsu · Agriculture Ecosystems & Environment · 2021 · 23 citations · Full text

Rice Smallholders, Precision Agriculture, Engineering +13