The eco-efficiency index (EEI) framework has been used to determine economically and environmentally optimal nitrogen (N) fertilizer application rates for some pollutants (such as greenhouse gas emissions) for selected agricultural production systems. However, previous EEI applications have...

This paper studies the effect of electronic trade on the quality of market price discovery, using the Intercontinental Exchange (ICE) cotton futures market as a laboratory to measure market quality under periods of floor trade, parallel floor and electronic trade, and electronic-only trade....

So far, world food supply has managed to stay ahead of rising population due to increasing productivity and a modest expansion of cultivated area. However, finite resource reserves, the increasing cost of energy and the increasing environmental cost of opening new land pose new challenges....

A Károly Róbert Főiskolán 1994 őszén beállított nehézfémterhelési tartamkísérlet (Al, As, Cd, Cr, Cu, Hg, Pb, Zn) hetedik évében őszi árpát (Hordeum vulgare L.), tizenharmadik évében lucernát (Medicago sativa L.) termesztettünk. A talaj és a növények arzéntartalmának...

Th is paper presents electronic tool to support farmers in fertilization planning. It is developed as a spreadsheet model, utilizing optimization potential of mathematical programming techniques. Described problem of fertilization planning is rather simple from technological-expert viewpoint,...

This study focuses on the pattern between investment in chemical inputs such as fertilizer, pesticides and herbicides and technical efficiency of farm households in Laguna, Philippines. Using a one‐stage maximum likelihood estimation procedure, the stochastic production frontier model was...

The developmental and reproductive biology of the blue alfalfa aphid, Acyrthosiphon kondoi Shinji, was studied under 15 temperature/photoperiod regimes. Five temperatures (10°,15°,20°,25°, 30°C) and three photophases (8, 12,16 h per 24 h) were utilized in controlled environmental chambers....

Water productivity is a suitable indicator in water potential analysis at a location in a region. In this study, changes in water use productivity are studied in spatial and temporal scale simultaneously. To evaluate temporal changes in water productivity in Hamadan region (Iran), Standard...