Studies on water requirement for vegetable production in naturally ventilated polyhouse
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Date
2013
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Publisher
DYSPU
Abstract
The present investigations entitled “Studies on Water Requirement for Vegetable
Production in Naturally Ventilated Polyhouse” were carried out in capsicum hybrid Bharat
and lettuce genotype SOL-10944 at the Experimental Research Farm of the Department of
Vegetable Science, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan,
HP during the year 2010-11 and 2011-12. The experiment was laid out in Randomized
Block Design with four replications of each treatment having different level and frequency
of irrigation at a spacing of 45 x 30 cm in a plot having dimensions 1.35 x 2.10 m (2.835
m2) accommodating 21 plants per plot. The treatments for capsicum comprised of three
irrigation depths viz., 0.25 cm, 0.50 cm and 0.75 cm with two irrigation intervals (daily and
alternate day) and a farmer practice (1-1.5 cm twice a week). For lettuce same irrigation
depth was used at alternate and two day intervals were kept. In total there were seven
treatments in both the crops. The observations were recorded on various horticultural,
quality and soil characteristics in both the crops.The present investigations concludes that,
treatment T4
(0.50 cm depth of irrigation water at an alternateday) resulted in maximum
number of fruits per plant, plant height, fruit breadth, average fruit weight, harvest duration,
yield per plot, total biomass production, N and K uptake in plants with maximum gross
` 71,456.00) and net income (` 60,513.42) in capsicum. Similarly in lettuce earliest
marketable maturity, minimum number of non-wrapper leaves, maximum diameter, gross
head weight, net head weight, yield per plot and total biomass production, carotene
content, N and P uptake in plants, with maximum gross (` 21,408.00) and net income
(`16,864.34) was recorded in the treatment T
4(0.50 cm of irrigation at two days interval).
Hence, irrigating the capsicum and lettuce crop at 0.50 cm depth at an alternate day and
two days intervals, respectively can be recommendedfor commercial cultivation in natural
ventilated polyhouse after multilocation testing.
Description
Keywords
Water, Ventilated Polyhouse