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Alternative Insurance Indexes for Drought Risk in Developing Countries 31
Bobojonov, Ihtiyor; Sommer, Rolf.
The paper compares the risk coping potential of insurances that are based on indices derived from weather (rainfall and temperature) data as well as from crop model and remote sensing analyses. Corresponding indices were computed for the case of wheat production in the Aleppo region of northern Syria, representative for agricultural production systems in many developing countries. The results demonstrate that weather derivatives such as the rainfall sum index (RSI) and the rainfall deficit index (RDI) have a very good potential for coping with risk in semiarid areas. Crop simulation model index (CSI) on the other hand could serve as an alternative to RSI and RDI when historical farm yield data is not available or not reliable. In such cases we simulated...
Tipo: Conference Paper or Presentation Palavras-chave: Risk management; Index insurance; Alternative index; CropSyst; NDVI; Risk and Uncertainty.
Ano: 2011 URL: http://purl.umn.edu/114256
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EVALUACIÓN DE UN MODELO PREDICTIVO SOBRE EL EFECTO DE LA TEMPERATURA Y HUMEDAD EN LA DESCOMPOSICIÓN DE rastrojo de trigo 113
García de Cortázar G.,Víctor; Silva C.,Paola; Acevedo H.,Edmundo.
Los objetivos de este trabajo fueron evaluar la descomposición de rastrojos de trigo (Triticum aestivum L.) bajo diferentes condiciones de temperatura y humedad en dos localidades, y comparar las mediciones efectuadas con las predicciones realizadas con el modelo de simulación de crecimiento de cultivos CropSyst. Se evaluó la tasa de descomposición de rastrojos de trigo dejados sobre la superficie del suelo, bajo tres dosis de paja (3; 6; y 9 t ha-1) y seis tratamientos de temperatura (definidos por el mes en que se colocaron los rastrojos en terreno) en dos experimentos de campo realizados en Santiago (Región Metropolitana) y El Carmen (VIII Región), Chile. El diseño fue de bloques completamente al azar con estructura factorial y cuatro repeticiones. En...
Tipo: Journal article Palavras-chave: Temperatura; Humedad; Modelación; CropSyst; Paja de trigo.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072003000100009
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Using Irrigation Scheduling to Increase Water Productivity of Wheat-Maize Rotation under Climate Change Conditions 117
El Afandi,Gamal; Khalil,Fouad A; Ouda,Samiha A.
Irrigation scheduling was used to increase water productivity of wheat (Triticum aestivum L.)-maize (Zea mays L.) rotation under two climate change scenarios. Three wheat varieties and two maize hybrids were planted at in a 2-yr field experiment. CropSyst model was calibrated and validated for the collected field data, then was used to assess the impact of two climate change scenarios (A2 and B2) and three adaptation strategies (early sowing changing, irrigation schedule and the interaction between them) in the year of 2038s. The results revealed that A2 reduced yield more than B2 scenario for both crops. High yield reduction in wheat-maize rotation could be expected under climate change conditions, where wheat and maize yield will be reduced by an average...
Tipo: Journal article Palavras-chave: Pan evaporation technique; CropSyst; HadCM3; Climate change scenarios; Adaptation strategies; Evaporación de bandeja; CropSyst; HadCM3; Escenarios de cambio climático; Estrategias de adaptación.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300015
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