Development of ferilizing programs for forage crop culture of environmental conservation type, 5: On basal dressing
2004
Naganawa, T. (Gifu-ken. Livestock Research Inst., Kiyomi (Japan)) | Taguchi, K. | Toyota, Y.
Four types of fertilizer, a compound fertilizer (CF). IB compound fertilizer (IBCF). a coated compound fertilizer (CCF) and a fertilizer mixture of urea, a coated fertilizer from which urea and superphososphate ( FMIX), were used for basal dressing for growing a variety of corn. 32K61. in the experimental fields. These fertilizers were applied to the fields in the ground along corn seeding lines using a corn planter. Urea was used for top dressing. The com showed a desired growth, regardless of fertilizer type. Leaf color (SPAD) increased nonlinearly for the culture period. The curves for CF and IBCF were in parallel and those for CCF and FMIX were in parallel as well. In case of CF and IBCF. top dressing with urea resulted in an appreciable increase in the leaf color. No difference among these fertilizer treatments was detected in the culm length, earing height, stalk diameter, sugar content and dry matter yield. The cost of fertilizer and manure was lower in CF than the others, but still higher than the coated urea previously tested (the fourth report). In conclusion, top dressing may be used at a time when the leaf color decreased to a value just below 40 of SPAD in th forage crop culture, and the coated urea may be used for basal dressing as a fertilizer that is more efficient and less harmful to the environment, compared to CF.
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