Importance of sky conditions on the record 2004 Midwestern cropyields
Agroclimatology ; Atmospheric circulation ; Cereal ; Cloud cover ; Crop ; Cropyield ; 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
cropyields 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
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 cropyield 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 cropyield 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 ; Cropyield ; 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 cropyields in Poland
Agroclimatology ; Climatic change ; Cropyield ; Density gradient ; Poland ; Risk ; Statistical distribution
An important source of risk in agricultural production is the variability to cropyields reflecting irregularly changing weather. This variability may be described as a stochastic process that has a function of density. Analyses of historical data
on cropyields 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 cropyield assessment in the Sahel using remote sensing data
AVHRR ; Africa ; Agriculture ; Arid area ; Cereal ; Cropyield ; Food security ; Model ; NOAA ; Remote sensing ; Sahel ; Senegal ; Vegetation index
This paper aims at assessing the present state of satellite remote sensing assessment of cropyields 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 cropyield 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
Natural use of stone and organic mulches for water conservation and enhancement of cropyield in semi-arid areas
Agricultural technique ; Agriculture ; Arid area ; Cropyield ; 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 cropyield. 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 cropyield enhancement under semi-arid conditions.
Agricultural data ; Agricultural product ; Agriculture ; Cropyield ; 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 ; Cropyield ; 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 cropyield 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.
Land use and crop diversity in two Iban communities, Srawak, Malaysia
Agriculture ; Cropyield ; 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