A Field experiment was carried out during the 2015-2016 growing season at Sersour experimental farm, located in the semi-arid region of Sétif (Algeria). The aim of this study was to evaluate the efficiency of using the numerical image analysis approach to estimate biomass and senescence by mean of appropriate software, the Mesurim Pro (Version 3.3). The results showed a significant difference between leaf reflectance at Red, Green and Blue light; results also registered a positive and significant correlation between leaf reflectance at red and blue, and senescence (r=0.78, r=0.50, respectively). This relationship between senescence and leaf reflectance indicate that the increase in leaf reflectance during senescence stage is due to degradation of leaf chlorophyll content. Over all, the numerical image analysis was very suitable approach to estimate reflectance of vegetal cover and the variation of some physiological traits.

Background: The aim of this study is to ascertain the response of dual exploitation of intercrops systems their ability to produce forage and grain. Thus the efficiency of the cereal-legume intercropping on the qualitative and quantitative improvement yield of cereals. Methods: The experiment was conducted at the Setif University Experimental Farm during the years of 2019-20. The experiment was laid out in completely randomize block (CRB) design with three replications. Three cereals namely triticale, oats and barley in association with forage pea and other mixtures with (Vesce commune) were studied. The measure focused on accumulation of dry matter accumulation (DMA), plant height, flag leaf length (FLL), grain yield (GY) and thousand kernels weight (TKW). Result: The results indicate that capacity of intercropping system systems to produce more dry matter than their mono cropping systems, as well as the intercropping systems significantly improved the qualitative and quantitative yield of cereals in all the tested intercropping systems. A positive significant correlation between SH and FLL r = 0.78 in the peas/oats intercrop. Thus use like this positive significant correlation between DMP GY r = 0.94, while the tritical / pea and barley / pea intercropping are characterized by the best DMP, GY and TKW among different tested cropping systems.