[PDF] Top 20 Directory UMM :Data Elmu:jurnal:A:Agriculture, Ecosystems and Environment:Vol82.Issue1-3.Dec2000:

... national and sub-national levels, improved methods for scaling-up results from plot to region are necessary, as is an improved predictive capabi- lity of where future production areas are likely to be ... Lihat dokumen lengkap

... use a multiplication factor (simple adding being a special case); (ii) use limited-scope bounds; (iii) use a variable with large scope to calculate a variable of more limited scope; (iv) use ... Lihat dokumen lengkap

... be a shift to warmer springs and ...increase and that increase may have already been signalled in the increased outbreak sizes observed in the regions of greatest warming (Oechel and ... Lihat dokumen lengkap

... or a solution of Richards’ equa- tion (often combined with the convection–dispersion equation to model solute ...sources and sinks and the redistribution of water in the whole ...profile, and ... Lihat dokumen lengkap

... plat data on the type and amount of land area of each crop in ...sites’. A total of 18 farm plats representing the ma- jor combinations of crops and irrigation management systems were ...plat ... Lihat dokumen lengkap

... review and discussions with ...Marlatt and Kim- brough, ...Equador and the Dominican Republic were also not used because the locational data were too ...from data in a climatic ... Lihat dokumen lengkap

... hydrological and agricultural systems, the typical approach would be to overlay GIS coverages of attributes such as soil, geology, topo- graphic characteristics, climate parameters and land use, where each ... Lihat dokumen lengkap

... soil and climate data applied here had only a small effect on the ability of the model to repro- duce the inter-annual variability in county and national yields (Table ...soil data was ... Lihat dokumen lengkap

... respiration and NPP. These NEP results suggest that indigenous and ex- otic forests, and unimproved and tussock grasslands, are likely to be in C balance over a one-year time period, ... Lihat dokumen lengkap

... as a positive cost), and this loss can now be compared with the likely costs of reversing the degradation, ...create a down- ward influence on costs, such as economies of scale and ... Lihat dokumen lengkap

... is a reality and will affect the poor in developing countries in many ...research and development on how to achieve food security and reduce rural poverty through the innovative management of ... Lihat dokumen lengkap

... use and of the efficiency of grain production correspond to a large ...efficiencies and the less intensive grain production can be explained by the less favourable environmental conditions in the ... Lihat dokumen lengkap

... with a daily time step from sowing to matu- rity, based on physiological processes that describe the crop’s response to soil and aerial environmental ...partitioning, and tiller growth and ... Lihat dokumen lengkap

... last 3–5 days and start with sessions to clarify participants’ expectations of mod- els in general and the objectives of the workshop in ...purpose and vi- sion for the use of the model after ... Lihat dokumen lengkap

... is a function of the management of physical resources, within the context of the prevailing social and economic ...geographic and socio-economic context of a particular study, the spatial ... Lihat dokumen lengkap

... as a function of thermal time, modified by ...above a minimum N concentration ([N]) of ...for a new increment of “stem” cannot be met from storage or from the soil, then green area may be sacrificed ... Lihat dokumen lengkap

... policies and institutional arrange- ments are needed to protect the forest, otherwise it will ...institutions and arrangements (probably from the contract theory liter- ature) that induce farmers to extract ... Lihat dokumen lengkap

... Argentina. A study was undertaken to estimate the potential value of ENSO-based climate forecasts for changing crop and farm management decisions in one location in the Southeast USA for comparison with ... Lihat dokumen lengkap

... UK and Europe are predicted to have daily June HTIs in the critical range for Karnal bunt by ...used and a conversion to mid-afternoon HTIs is ...infect and cause disease is still incompletely ... Lihat dokumen lengkap

... 1996), and can occur at different points through the value-adding ...pastures, and manage- ment of weeds and other pasture composition changes where ...able, and adjustment to land use will be ... Lihat dokumen lengkap