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All Journal AGRITROP Indonesian Journal of Agricultural Science
K. BUDIARTO
Indonesian Ornamental Crops Research Institute
Agriculture, Biological Sciences & Forestry

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EFFECTS OF IRRIGATION FREQUENCY AND LEAF DETACHMENT ON CHRYSANTHEMUM GROWN IN TWO TYPES OF PLASTIC HOUSE Budiarto, K.; Sulyo, Y.; S.N., E. Dwi; Maaswinkel, R.H.M.
Indonesian Journal of Agricultural Science Vol 8, No 1 (2007): April 2007
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Chrysanthemum is one of important ornamentals in Indonesia and it ranks in the first quantity of cut flower marketed every year. In most cases, the low productivity is still a constraint for the traditional growers to make production process profitable. Several problems revealed in chrysanthemum production were investigated. The study dealt with the effect of two types of plastic house constructions, irrigation frequency, and leaf detachment on the growth and development of chrysanthemum. The experiment was conducted at Segunung, Indonesian Ornamental Plants Research Institute during the dry season of 2005. A nested design with six replications was used. The results showed that plants grown in wood-constructed plastic house had better growth performance and flower quality than those under bamboo plastic house. Longer stem and higher plant fresh weight with more flowers and longer life span were also observed on chrysanthemum irrigated four times per week than those irrigated twice per week. Leaf removal often practiced by the growers is no longer recommended, since the number of leaves on the plant influenced all parameters observed. The more leaves were detached, the more  negative impacts on plant growth were found.
EFFECTS OF TYPES OF MEDIA AND NPK FERTILIZER ON THE ROOTING CAPACITY OF CHRYSANTHEMUM CUTTINGS Budiarto, K.; Sulyo, Y.; S.N., E. Dwi; Maaswinkel, R.H.M.
Indonesian Journal of Agricultural Science Vol 7, No 2 (2006): October 2006
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Physiological status of chrysanthemum cuttings during rooting process highly influences plant growth and flower production. Amongst other aspects, rooting capacity of the cuttings is the most important. Rooting capacity is influenced by environmental conditions such as growing medium and nutrition. The study was aimed to analyze the effects of different types of media, fertilizer concentration, and frequency of fertilizer application on the rooting capacity of chrysanthemum cuttings. The experiment was conducted at the Segunung Experimental Station of the Indonesian Ornamental Crops Research Institute from February to May 2005. The treatments consisted of four different rooting media, i.e. carbonized rice husk, coco peat, perlite, and mixture of perlite and vermiculite (1:1 v/v); two concentrations of NPK (25:7:7) fertilizers, i.e. 1.75 and 2.5 g 1-l; and four frequencies of fertilizer application, i.e. every 1 day, 2 days, 3 days, and 4 days. The experiment was designed in acompletely randomized block with four replications. Parameters observed were rooting capacity and cutting performances such as cutting height, cutting diameter, number of leaves, number of visible roots, and root length at 16 days after planting. The results showed that chrysanthemum cuttings rooted in carbonized rice husk had better performance than those rooted in coco peat, vermiculite, and mixture of perlite + vermiculite. Higher concentration of fertilizer solution up to 2.5 g l-1 also gavesignificant effect on the root formation and further root growth of cuttings. However, the rooting capacity of cuttings was not affected by the frequency of fertilizer application. This study implied that carbonized rice husk growing medium supplemented with NPK (2.5 g l-l) every 4 days during rooting period is the choice for traditional chrysanthemum growers to increase the perform-ance and quality of the cut flowers.
RESPON PEMBUNGAAN BEBERAPA KULTIVAR ANTHURIUM BUNGA POTONG TERHADAP APLIKASI GA3 BUDIARTO, K.; WURYANINGSIH, S.
AGRITROP Vol. 26, No. 2 Juni 2007
Publisher : AGRITROP

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Anthurium is one of popular ornamental cut flowers in the world. Some constraints were revealed during production process due to the low plant productivity. Stimulating the plant to undergo earlier reproductive stage for producing more flowers was investigated. The application of growth regulator was predicted to have more desirable effects on this case as far as these concerned. The research was then, conducted to find out the effects of foliar spray of GA3 on the flowering response of several anthurium cultivars. The experiment was carried out at The Indonesian Ornamental Crops Research Institute from March to August 2005. A Randomized Completely Blocked Design (RCBD) with 7 replications was used. The first factor was GA3 concentration i.e. 0 (control), 500, 1000, 1500 and 2000 ppm, while the second factor was anthurium cultivars namely cv. Tropical, Kaumana and Safari. Results of the experiment showed that the application of GA3 hastened flower initiation and number of flowers per plant compared to the intact plant. However, the application of more than 500 ppm have no significant desirable effects. Stalk length and diameter decreased with the application of GA3 and more undesirable effects on stalk diameter was observed under GA3 higher than 1000 ppm. Cv. Tropical showed earlier flowering response and produced more flower than cv. Kaumana and Safari. However, this cultivar has the least stalk length and diameter. The highest stalk length and diameter was observed in cv. Safari.
Co-Authors E. Dwi S.N. R.H.M. Maaswinkel S. WURYANINGSIH Y. SULYO