A growth chamber experiment was conducted to compare ammonium thiosulfate, gypsum and elemental sulfur in the form of Agrisul as sources of sulfur for rapeseed (Brassica napus var.
A growth chamber experiment was conducted to examine the effect that banding urea or a thiosulfate source with monoammonium phosphate had upon fertilizer phosphorus uptake and dry matter yield of barley and rapeseed. For barley, fertilizer phosphorus uptake and dry matter yield were significantly increased when a thiosulfate source was banded with monoammonium phosphate, but not when urea was banded with monoammonium phosphate. Fertilizer phosphorus uptake and dry matter yield of rapeseed were not significantly affected by banding either a thiosulfate source or urea with monoammonium phosphate.
and placement on yield and zinc utilization by blackbean ( d6termin6 les rapports entre les teneurs en zinc des plantes, I'utilisation du zinc par les plantes et la concentration du zinc dans la zone de rdaction du sol. Une 6quation a6t6, €labor4rn, afin d'6tablir les rapports entre les utilisations du zinc et la concentration du zinc dans la bande de terre fertilis6e et nous avons ainsi pu ddterminer comment une augmentation de la superficie de la zone fertilisee influe sur la teneur en zinc des plantes. Nos r6sultats donnent i conclure que le zinc inorganique doit €tre m6lang6 le plus uniform6ment possible pour donner une efficacit€ maximale.
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