Effect of Different Micronutrients Sprays at different Concentrations on Biochemical Parameters and vase life of rose cv. Sophia Loren.

摘要

An experiment was conducted to study the effect of pre-harvest foliar spray of different micronutrients viz MgS04 (0.5,1.0 and 1.5%), MnS04 (0.5,1.0and 1.5%), FeS04 (1.0,1.5 and 2.0 %), Boric acid (0.25, 0.5 and 0.75%) ZnS04 (0.5, 0.75 and 1.0%) and CuS04 (0.1, 0.3 and 0.5%) on certain biochemical parameters and vase life of rose cv. Sophia Loren. The results revealed that all the boric acid spray treatments (boric acid 0.5, 0.25 and 0.75%) recorded (9.56, 9.31 and 9.24) higher vase life in days respectively. Which may be attributed to the highest sugar content (6.083, 4.31 and 4.017 mg/gfw) recorded respectively in these treatments. It is followed by ZnS04 0.75% which recorded a vase life of 9.11 days with sugar content of 5.89 mg/gfw. CuS04 0.1% recorded a vase life of 8.86 days. Lower total free amino acids (TFAA) 9.97 mg/gdw may the reason attributed for longer vase life of flowers in Boric acid 0.5% spray treatment.