Mineral nutrition interaction in leaves, stems, and ears of winter wheat
2001
Karele, I. | Ruza, A. (Latvia University of Agriculture, Jelgava (Latvia). Dept. of Crop Production)
The goal research was to determine biological needs for the major plant nutrients N, P2O5, and K2O in winter wheat based on substantial use of fertilizers and capability of plants to utilize these mineral elements at definite periods of plant growth, as well as to find optimal ratio among these elements for diverse winter wheat varieties. Most of needed plant nutrient elements N, P2O5, K2= were removed by plants during early growth, and further uptake of these nutrient elements declined with plant growth. There was no essential difference in the proportion of the major nutrient elements among crop varieties. Diverse winter wheat varieties under different fertilizer treatments essentially affected leaf N concentration. Plant growth stages affected the distribution of all major plant nutrient elements among leaves, stems and ears except for P2O5 concentration in ears. Close correlation exist among plant nutrient elements in leaves and stems, as well as in leaves and ears of winter wheat
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