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  • Importance of sky conditions on the record 2004 Midwestern crop yields
  • Agroclimatology ; Atmospheric circulation ; Cereal ; Cloud cover ; Crop ; Crop yield ; Illinois ; Midwest ; United States of America
  • Weather during the 2004 growing season in the Midwest produced exceptionally high yields of all crops with resulting record yields that were 10% to 25% above prior records, an exceptional increase. The inability to assess the magnitude of the 2004
  • crop yields resulted from a lack of information regarding the presence and effect of the numerous days with sunny skies in 2004. These results suggest that in the future, sky conditions measured during the growing season need to be incorporated
  • in assessments of potential final crop yields.
  • Yield variability of crops in Japan
  • Yield and climate data are analysed to obtain relationships between yield variability and weather variability. The analysis indicates that the influence of weather variability on crop yield is greater in regions with poor agroclimatic resources than
  • in regions with good agroclimatic resources. The spectral analysis is made to study in more detail regional characteristics of yield fluctuations. It is reported that Japan can be classified into five districts from the stand point of characteristics of yield
  • Regionalization based on agro-climatic data and crop yield in Jilin province, China.
  • Precipitation is singled out as the factor which correlates best with output indices. Applying the optimum dividing method on data of the 39 counties of Jilin province 5 yield climatic zones are delineated. The yield index and yield value index
  • for various crops are suggested for consideration in planning the layout of crops in five régions.-(TNC)
  • High yielding vs. traditional crop varieties : a socio-agronomic study in a Himalayan village in India
  • Agronomy ; Cereal ; Crop ; Crop yield ; Fodder ; India ; Mountain ; Mountain farming ; UttarPradesh ; Village
  • Under irrigation, high-yielding varieties produced higher wheat yields, but in rainfed fields, these varieties did not perform better. Explains why hill people prefer older, more reliable varieties for the production of food, fodder and fuel. - (DWG)
  • A probability distribution for crop yields in Poland
  • Agroclimatology ; Climatic change ; Crop yield ; Density gradient ; Poland ; Risk ; Statistical distribution
  • An important source of risk in agricultural production is the variability to crop yields reflecting irregularly changing weather. This variability may be described as a stochastic process that has a function of density. Analyses of historical data
  • on crop yields reveal that the function of density changed from right-skewed to left-skewed, along with increasing mean yields. A fairly good approximation of the probability distribution for actual yields may be obtained using the log-normal distribution
  • Advances in crop yield assessment in the Sahel using remote sensing data
  • AVHRR ; Africa ; Agriculture ; Arid area ; Cereal ; Crop yield ; Food security ; Model ; NOAA ; Remote sensing ; Sahel ; Senegal ; Vegetation index
  • This paper aims at assessing the present state of satellite remote sensing assessment of crop yields in the Sahel in the supprot of economic planing as well as natural resource management at a national level. Experiences from Senegal have shown
  • associated with remote sensing crop yield monitoring.
  • that a linear relation can be established between millet grain yield collected in the field and vegetation index data, NDVI, integrated during the period where the millet grains are produced. Furthermore, a second objective is to highlight the advantages
  • A method for identifying soil properties influencing crop yield : the example of amize in the savanna belt of Southwestern Nigeria
  • Growth and instability in crop yields: a case study of agriculture in Karnataka, South India
  • Crop yields and climate change to the year 2000. Vol. 1. Report on the second phase of a climate impact assessment.
  • Climate-crop regression yield model: an appraisal in Application of remote sensing to agricultural production forecasting.
  • Rainfall and crop yields in seasonally arid West Africa
  • Natural use of stone and organic mulches for water conservation and enhancement of crop yield in semi-arid areas
  • Agricultural technique ; Agriculture ; Arid area ; Crop yield ; Evaporation ; Kenya ; Rill wash ; Semi-arid area ; Soil moisture
  • Three experiments were set up to study the effects of stone and organic mulches, applied at different rates, on runoff, evaporation, soil moisture storage and crop yield. Both mulch types reduced runoff and evaporation losses, and the intensity
  • of reduction increased with mulch application rate. Thus stones were found to be more efficient than Euphorbia as mulch for moisture conservation and crop yield enhancement under semi-arid conditions.
  • Agricultural data ; Agricultural product ; Agriculture ; Crop yield ; Europe ; Spatial differentiation
  • In this paper the spatial differentiation of the intensity of agricultural crop production in Europe is investigated. Based on yields statistics of the five major crops (wheat, maize, barley, potato and sugar beet) the intensity of agricultural
  • Preliminary analyses for crop water consumption by using lysimeter
  • Agriculture ; Cereal ; China ; Crop yield ; Drainage ; Evapotranspiration ; Irrigation ; Northern China ; Water ; Water management ; Water needs
  • This paper deliberates on the issue of water consumption (evapotranspiration, ET) of 3 main crops in North China : wheat, corn and bean, its relation with crop yield and the possible use of thus in the water saving practice.
  • Spatial variability of an agricultural field : geostatistical analysis of soil texture, soil moisture and yield components of two rainfed crops
  • Spatial variations of soil moisture content at three dates of sampling, textural components and yield components of two rainfed crops (vetchoat mixture and durum wheat) successively cultivated on the same field are analyzed by using statistical
  • Evaluation of the climate for land suitability purposes. II. Evaluation for annual crops in a humid tropical environment
  • A method is presented to evaluate the climate for annual crops grown in a humid tropical environment, based on the variability concept, which was introduced earlier. An example is given, as well as some relationships between recorded yield data
  • and the climatic code advocated, for different crops. The method is entirely compatible with currently used land evaluation systems.
  • The effect of meteorological factors on crop yields and methods of forecasting the yield.
  • Impact of climatic change on agricultural production in Kansas: a four-crop analysis
  • Agricultural productivity ; Cereal ; Climatic variation ; Crop yield ; Forecast ; Greenhouse effect ; Kansas ; Model ; Soil moisture ; United States
  • moisture was used in regression-based models to predict yields for the four major grain crops: wheat, corn, soybeans, and grain sorghum.
  • Tropical agriculture: crop diversity and crop yields
  • Land use and crop diversity in two Iban communities, Srawak, Malaysia
  • Agriculture ; Crop yield ; Farming system ; Land use ; Malaysia ; Rice ; Rural community ; Sarawak ; Subsistence agriculture ; Traditional agriculture
  • is the production of wet rice with high yields in the coastal area. The success or failure of these environments as contributors to the subsistence of the communities, and the potentials for development, including introductions of new cash or subsistence crops