Calcium, magnesium and sulphur uptake by above ground parts in intergeneric hybrids
2004
Thangavelu, S. | Rao, K Chiranjivi
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 Erianthus. Clones Co 8338, Co 6304, Co 8341, the hybrid 39/7 and CoC 671 had recorded low quantity of Ca per tonne of cane. The decreasing trend in Mg uptake by a tonne of cane was as follows:Saccharum x Erianthus > 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.
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