The apparent optimum levels of macronutrients in ppm as determined for Cenchrus ciliaris cv. Molopo in sand culture, are: N?140, P?31, K?130, S?6, Ca?20 and Mg?5. The cultivar is most sensitive to deficiences of N, P, K and S. High Ca (600 ppm) and Na concentrations (500 ppm in the case of emergent seedlings and 1 000 ppm after the 4?leaf stage) resulted in lowered production (in the case of Ca and Na) and high seedling mortality (in the case of Na). N. P and possibly S, were the limiting elements to higher production in a soil of the Bontberg series (Hutton form). In the Vivo?Dendron area, DM production was significantly increased by N, but not by P. Cultivation between the rows significantly increased DM yields from the second growing season under dryland conditions, but not under irrigation.
Journal articles from the Grassland Society of Southern Africa (GSSA) African Journal of Range and Forage Science as well as related articles and reports from throughout the southern African region.