Effects of planting and inflorescence removal methods on growth of Patumma (Curcuma alismatifolia Gagnep)
1995
Surawit Wannakrairoj(Kasetsart University. Kamphaeng Saen Campus, Nakhon Pathom (Thailand). Faculty of Agriculture. Department of Horticulture)
Patumma rhizome with 3-6 storage roots was planted either upright or lay down. For lay down planting, a whole rhizome or a longitudinally divided half-rhizome was used. The inflorescence was removed when the peduncle was either 1-2 cm long or fully developed. A growth study revealed that all three planting methods equally affected plant height, number of grade A rhizome and total rhizome weight. Planting with half rhizome led to the delay of sprouting and the increase in number of lead, blooming age, cut flower date and peduncle length while resulted in the reduction of number of come bract, when compared with the vertical planting. Laying the whole rhizome down gave the same result as the normal planting except yielded greater number of shoot per clump, number of grade B rhizome and number of inflorescence per clump. The two inflorescence removal method also gave similar result on plant height, total rhizome weight, number of grade A and B rhizome. Removal young inflorescence however led to higher number of shoot per clump than the removal of mature inflorescence.
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