Impact of bioclimate and climate factors on plant yield in the area of jenin at the north of palestine

Apricot (Prunus armeniaca L.) is one of the most important export crops in Palestine. In this study, we analyzed the mean monthly temperature and precipitation using data from one weather station of the Palestine Meteorological Department, recorded in the period from (1993-2009), with the same years of plant production (rainfed) from the Palestinian Central Bureau of Statistics (PCBS). Statistical analysis included a bioclimatic analysis of Palestinian meteorological station for the period previous by using bioclimatic classification of the Earth of Rivas Martinez Salvador, with regard to simple continentality index, compensated thermicity index, annual ombrothermic index, water deficit and soil water reserve. In concluded, when we applied a principal component analysis (PCA), observed that the Jenin type plot during (1996-2004) are positively correlated and affected by the bioclimate factors as annual ombrothermic index, compensated thermicity index and climate factors as a soil water reserve to plant yield, while negatively correlated and influenced by the rest factors of the climate as temperature, deficit water and precipitation during (1993-1996 and 2004-2009). Furthermore, the optimum of the plant production is achieved with values of simple thermicity index between (16-22), annual ombrothermic index (2.7 - 4.5), compensated thermicity index (250-420), precipitation more than 800 mm., temperature (18-320C) at the summer, and thermomediterranean to mesomediterranean of thermotype in Jenin at the north of Palestine.