Calcium, magnesium and sulphur uptake by above ground parts in intergeneric hybrids

Abstract

In a replicated field trial, eleven intergeneric hybrids including four Co canes were evaluated for better nutrients use efficiency. At harvest, Ca, Mg and S content were estimated in dry leaves, green tops and stem. Uptake of Ca, Mg and S by dry leaves, green tops, stem, total above ground parts and kg nutrient per tonne of cane were determined. Significant differences among clones were observed in Ca, Mg and S nutrient uptake by dry leaves, green tops, stem, total above ground parts and nutrient to produce a tonne of cane. The increasing trend of kg Ca /tonne of cane was as follows: Co Canes Saccharum x Sorghum >Saccharum x Sclerostachya > Co Canes. Clones recording low Mg uptake for a tonne of cane were Co 8338, Co 6304, 125 and 163. The increasing trend of S in kg / t of cane was as follows: Co Canes <Saccharum x Sorghum <Saccharum x Sclerostachya <Saccharum x Erianthus. Hybrids Co 8341, Co 6304, 39/7, CoC 671, Co 8338, 42/3 and 140 recorded low quantity of S uptake for a tonne of clone. Clones identified for better Ca, Mg and S nutrients use efficiency were Co 6304, Co 8338,Saccharum x Sorghum hybrid 39/7, Co 8341 and CoC 671.