STUDIES ON THE EFFECT OF SPACING AND BULB SIZE ON CUT FLOWER PRODUCTION OF TUBEROSE {Polianthes tuberosa Linn.)
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Date
2002-06-20
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MAHATMA PHULE KRISHI VIDYAPEETH, RAHURI - 413 722. DIST. AHMEDNAGAR, MAHARASHTRA (INDIA).
Abstract
The present investigation viz., "Studies on the effect of spacing and bulb size on cut flower production of tuberose (Polianthes tuberosa Linn.)" was conducted at Modibaug Garden, Horticulture Section, College of Agriculture, Pune-5 during the year 2001-2002. The experiment was laid out in Factorial Randomized Block Design with two varieties viz., Local Single and Shringar, three spacing viz., 30 cm X 20 cm, 30 cm X 30 cm and 30 X 40 cm and two bulb size viz., 1.5- 2.5 cm, and 2.6 - 3.5 cm diameter with three replications. The observations on ten characters were recorded and analyzed statistically to study the effect of spacing and bulb size on growth and cut flower production of tuberose. Variety Local Single produced longer spikes and high yield of cut spikes as compared to Shringar but the variety Shringar was significantly the earliest in sprouting and flowering. It was also found superior for most of the quality attributes which are important for commercial cut flower production like number of florets per spike, rachis length, diameter of flower stalk and vase life over Cv. Local Single. This indicated that variety Shringar is more suitable for cut flower production. The large sized bulbs (2.6 - 3.5 cm diameter) found significantly superior over small sized bulbs in respect of early sprouting and flowering, number of leaves per plant, spike and rachis length, diameter of flower stalk, number of florets per spike, number of spikes per plant, per plot, per m 2 and vase life. The wider spacing of 30 cm X 40 cm was significantly superior in early flowering and producing longest spikes and rachis, large size flower stalk, more number of florets per spike and per plant as compared to medium spacing of 30 cm X 30 cm and closer spacing of 30 cm X 20 cm, but flower yield per plot and m 2 was significantly low as compared to these spacing. The medium spacing of 30 cm X 30 cm was at par with the closer spacing of 30 cm X 20 cm in respect of number of spikes per plot and per m , but it was significantly superior with regard to early flowering, spike and rachis length, number of florets per spike and number of spikes per plant over closer spacing of 30 cm X 20 cm. Hence, the spacing of 30 cm X 30 cm is optimum for better quality and high yield of flowers. Thus, based on the findings of present investigation, it can be concluded that Cv. Local Single found suitable for higher yield (118 spikes per m2) and Cv. Shringar is the best variety for high yield (92 spikes per m2) and best quality cut flowers. Also planting of large sized bulbs with the spacing of 30 cm X 30 cm was found to be the best treatment.
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