Effect of different nutrient solutions in Dendrobium on flower quality and yield of orchid under polyhouse

The present investigation entitled "Nutrient Management in Dendrobium Orchid Under NV Polyhouse Condition" was conducted at Floriculture Research Farm, Navsari Agricultural University, Navsari, Gujarat, during October 20, 2020 to October 19, 2022. The flowering parameters were analysed with Completely Randomized Design (CRD). There were nine treatments and 3 repetition. There are different nutrients which used in the experiment likewise, N, P, K, Ca, Mg, S, Fe, Mn, Zn, Cu, B, Ni and Mo and made treatments as T1: Solution P, T2: Solution P + S, T3: Solution P + M1, T4: Solution P + S + M1, T5: Solution P + M1 + M2, T6: Solution P + S + M1 + M2, T7: Solution P + S + M1 + M2 (Fortnightly), T8: Solution D (Drenching) and T9: T7 + T8. The flowering parameters were influenced significantly by different levels of macro and micronutrients. The maximum spike length, rachis length, floret size and number of spikes per plant were found in T6. Thus, the present findings that i.e. N: 200 mg/l weekly spray while, P:50 mg/l, K: 200 mg/l, Ca and Fe: 100 mg/l, each of Mg, Mn, Zn: 50 mg/l, S: 232.3 mg/l, Cu: 10 mg/l, B: 25 mg/l and Ni, Mo: 5 mg/l (each) at every 15 days interval spray enhanced flowering and yield of Dendrobium orchid under polyhouse.