Effect of encapsulated calcium carbide on growth, yield and N use efficiency of rice (Oryza sativa L.)
2009
Yaseen, M. (University of Agriculture, Faisalabad (Pakistan). Inst. of Soil and Environmental Sciences) | Hussain, S.Z. (University of Agriculture, Faisalabad (Pakistan). Inst. of Soil and Environmental Sciences) | Saif-ur-Rehman, K. (University of Agriculture, Faisalabad (Pakistan). Inst. of Soil and Environmental Sciences) | Arshad, M.
A field experiment was conducted to evaluate the potential of encapsulated CaC2 on plant growth and yield of rice. Application of encapsulated CaC2 in combination with recommended dose of N fertilizer significantly increased number of tillers, straw and paddy yield compared to N fertilizer application alone. Maximum number of tillers m-2 and paddy yield was observed where encapsulated CaC2 @ 60 kg per ha was applied with N fertilizer @ 60 kg per ha applied two weeks after transplanting. Results revealed that half of the recommended dose of N produced maximum paddy yield just with addition of CaC2 @ 60 kg per ha than that of full dose of N fertilizer. Moreover, application of encapsulated CaC2 resulted in higher N-use efficiency by rice crop than that observed with N fertilizer alone. Maximum agronomic, apparent and physiological efficiencies were observed where CaC2 plus N fertilizer (each applied @ 60 kg per ha) was applied. These findings indicated that CaC2 affects plant growth by improving N-use efficiency in addition to a hormonal action.
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