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ISHS Acta Horticulturae 995: VII International Congress on Cactus Pear and Cochineal

EFFECT OF IRRIGATION ON THE ROOTING OF ONE-YEAR-OLD CLADODES OF CACTUS PEAR

Authors:   M. Arba, K. Benrachid
Keywords:   Opuntia, cactus pear, cutting, rooting, irrigation, cactus pear pads, one-year pads
DOI:   10.17660/ActaHortic.2013.995.17
Abstract:
Cutting is important in cactus pear, but few data are available on the effect of some factors as water on the rooting of cactus pear pads. The aim of this work was to study the effect of irrigation before and after planting on the rooting of one-year-old cladodes, and on the evolution of the fresh weight of these cladodes. Observations were done in 4 times, at a right of once per 15 days. Obtained results showed that for the treatments irrigated and not irrigated pads, pads fresh weight has decreased progressively during the two first fortnights after planting and has increased rapidly at the beginning of the third fortnight to reach at the end of the 4th one 32.65% of profit in weight for irrigated pads and 32.22% for non-irrigated ones. Number and average length of emitted roots by pad have each one evolved in the same manner for the two treatments; the number of roots is passed from 3.16 and 2.82 (respectively for irrigated and non-irrigated pads) at the 2nd observation to 22.50 and 21.13 (respectively for irrigated and non-irrigated ones) at the 4th observation, and the length of roots increased slowly at the beginning to reach 2.01 and 1.34 cm (respectively for irrigated and non-irrigated pads) at the 3rd observation, and then quickly to reach 7.25 and 6.48 cm (respectively for irrigated and non-irrigated ones) at the end of the 4th fortnight. Roots fresh weight also has a slow increase until the 3rd observation where it reached 1.48 and 1.30 g (respectively for irrigated and non-irrigated pads), and thereafter a fast increase until the 4th observation where it reached 4.13 and 4.31 g (respectively for irrigated and non-irrigated ones).

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