Performance of Stylosanthes hamata cv Verano as influenced by nutrient changes
1986
Mohammed Saleem, M.A. | Otsyina, R.M. (International Livestock Centre for Africa (ILCA), Kaduna (Nigeria). Subhumid Zone (SHZ) Programme)
Use of the subtractive technique in micronutrient trials on a ferruginous soil in the subhumid zone of Nigeria showed that DM yields from treatments lacking Cu or P were 64 % less than the control (all nutrients supplied). Yields were reduced by 13-23 % with non-application of B, Mo, Zn, Mg, Ca and K; and 30-40 % with elimination of Co or S. Subtraction of S, Zn and Mo resulted in more severe yield reductions in the second year than the first. There was a wide variability in nutrient composition of herbage as influenced by treatment. The levels of Zn were well below the critical limit required for plants and animals (12-18 ppm and 10-30 ppm. respectively). Positive interaction between P and Cu in terms of DM yield was observed
显示更多 [+] 显示较少 [-]