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|Title: ||Influence of nutrition on yield, quality and profitability of orchid cv. Dendrobium Sonia 17|
|Authors: ||Sujatha A, Nair|
|Issue Date: ||2009|
|Citation: ||Sujatha A.Nair and K. Sujatha. 2009. International Conference on Horticulture for Livelihood Security and Economic Growth, Bangalore, November 9-12.|
|Abstract: ||Orchids are highly valued as cut flowers owing to the wide range of colours, shapes, sizes and fragrance they display, with a long vase life being an added advantage. Dendrobium is a popular genus for cut flower production. Many growers in the states of Kerala, TamilNadu, coastal Karnataka and Andhra Pradesh are cultivating Dendrobiums on a commercial scale. Dendrobiums occupy nearly 90 per cent of the area under orchid cultivation in these areas due to the easy management practices and plant material availability. Considering the large area under Dendrobium cultivation, and the fact that there is a decline in the yield and quality of the spikes during the cooler months of winter and during peak summer months, it was found essential to sustain the yield and quality of the flowers round the year for commercial production so as to increase the profitability for the growers.
One of the critical factors affecting the yield and quality of orchid is the nutrition. The optimum NPK ratio for Dendrobium has been standardized. However, this recommended dosage does not give optimum yield and spike quality over a long time in commercial cultivation. A study was therefore conducted at IIHR, Hessaraghartta during 2006-08 on three-year-old plants to sustain the yield and quality of the spikes by application of different levels of N and P as foliar nutrition. Pooled analysis of data revealed that biweekly foliar spray of 1:6:1 NPK @ 0.2% recorded maximum for number of canes per plant (6.85), total number of spikes per plant per year (9.11), number of florets per spike (13.02) and spike length (62.05 cm) which were significantly higher compared to the recommended fertilizer dose (control). This treatment also recorded maximum yield of 9.70 and 8.5 spikes per plant per year giving a B: C ratio of 2.32 and 2.38 respectively during the third and fourth year of the crop. Thus increase in P levels during the flowering stage lead to realizing better yield coupled with improved quality.|
|Appears in Collections:||Ornamental Crops|
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