Commercial production of Christia subcordata moench by establishing cultural practices and by applying plant growth regulators
Whiting, Paula Anita
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Cultural guidelines for greenhouse production of Christia subcordata were established using two irradiance levels (low and high) and five (100, 200, 300, and 400 mg/L) nutrient levels. No significant difference found in height and number of branches between plants grown under low irradiance and those plants grown under high irradiance. Biweekly fertilization at a rate of 100 -2-1to 200 mg/L nitrogen between 400-600 mol ms produced optimal plant growth and healthy, marketable plants. Plant growth regulator (PGR) studies were conducted using four commercial chemicals: benzyladenine, chlormequat chloride, dikegulac-sodium, and ethephon. Ethephon was most effective for controlling growth and producing marketable plants. Ethephon-treated plants exhibited anatomical differences in leaf and stem tissue and cell diameter when compared with untreated plants.