in order to study of effects of integrated biological and chemical  fertilizers on  fertilizer use efficiency, grain yield and related traits to  grain growth of barley (hordeum vulgaris l.), a factorial experiment was conducted based on randomized complete block design with three replications in research farm of the faculty of agriculture sciences, university of mohaghegh ardabili in 2012. tre...

Enhancing the nitrogen (N) efficiency of maize hybrids is a common goal researchers, but involves repeated field and laboratory measurements that are laborious costly. Hyperspectral remote sensing has recently been investigated for measuring predicting biomass, N content, grain yield in maize. We hypothesized vegetation indices (HSI) obtained mid-season through hyperspectral could predict whole...