Abstract
Nutrients are needed to increase crop production. Liquid fertilizer (bio-urine), which macro elements, easily absorbed by plants and quickly shows results with optimum concentration, is one of the organic fertilizers that can be used as a trigger for the growth of potted chrysanthemums. The aim of this study to determine the optimum concentration of bio-urine in potted chrysanthemum cultivation. This research was conducted from October to December 2020 at West Sumatera AIAT’s greenhouse on altitude of 1000 m above sea level, was designed with a Randomized Complete Block Design and five replications. Observed consist of five concentrations of bio-urine, namely (1) 200 ml L-1of water, (2) 100 ml L-1of water, (3) 66.67 ml L-1of water, (4) 50 ml L-1and (5) 40 ml L-1of water. Parameters observed were plant height, number and length of internodes, number of branches, stem diameter, flower initiation, number and diameter of flowers, and petiole length. The result shows that Bio-urine with a concentration of 100 ml L-1 of water produces potted chrysanthemum with optimum parameters of plant height, number of internodes, number of branches, stem diameter, number of flowers, flower diameter, and petiole length.
Highlights
Chrysanthemum is an ornamental plant that have the potential to be developed either as cut flowers or pots
The results of previous research [3] showed that the application of 20 tons of cow manure was able to increase plant height and stem diameter of chrysanthemum compared to the use of chicken manure
The application of cow manure had a good effect only on plant height at the age of 14 and 28 days after planting (DAP), the number of leaves at 42 DAP, and flower diameter of 2 kg m-2 [4]. Another organic fertilizer that can be used is liquid organic fertilizer (Bio-urine) which contains rich in macro elements and is absorbed by plants and shows results quickly, with the right concentration being one of the organic fertilizers that can be used as a trigger for the growth of potted chrysanthemums
Summary
Chrysanthemum is an ornamental plant that have the potential to be developed either as cut flowers or pots. The results of previous research [3] showed that the application of 20 tons of cow manure was able to increase plant height and stem diameter of chrysanthemum compared to the use of chicken manure. The application of cow manure had a good effect only on plant height at the age of 14 and 28 days after planting (DAP), the number of leaves at 42 DAP, and flower diameter of 2 kg m-2 [4] Another organic fertilizer that can be used is liquid organic fertilizer (Bio-urine) which contains rich in macro elements and is absorbed by plants and shows results quickly, with the right concentration being one of the organic fertilizers that can be used as a trigger for the growth of potted chrysanthemums. This study was designed to determine the optimum concentration of Bio-urine Liquid Organic Fertilizer (LOF) in potted chrysanthemum cultivation
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