engleski

Harvest index and nitrogen uptake of barley in intercropped walnut orchard

The aim of our research is to investigate barley productivity and nitrogen use efficiency in an intercropped system with common walnut (Juglans regia). Harvest index was calculated as ratio of barley grain yield and total aboveground biomass. From dried samples, nitrogen concentration was determined by Kjeldahl digestion method. Nitrogen uptake (whole plant) and nitrogen use efficiency (NUE) were calculated as follows: N-uptake (kg ha- 1) = N% * DM/100 eq. 1 NUE (kg kg-1) = Grain Yield/Nuptake eq. 2. Our results show that intercropping may improve harvest index and nitrogen use efficiency of crops as well as possibly produce more nutritious food without high inputs.

barley, intercropping, harvest index, nitrogen use efficiency

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