Since variations in chrysanthemums are still limited, Indonesia still imports. An effort to expand the variation can be done through polyploidy techniques using colchicine. Pasopati varieties of the chrysanthemum were propagated in vitro and treated with colchicine and planted in different media compositions to observe performance and obtain superior genotype. Experiment with a factorial pattern that consist of two factors: the composition of the planting medium ( m1 = top soil, m2 = cocopeat, m3 = husk charcoal, m4 = top soil + cocopeat m5 = top soil + husk charcoal, m6 = cocopeat + chaff charcoal) and polyploidy chrysanthemum genotypes (g1 = KAR0, g2 = KAR1, g3 = KAR2, g4 = KAR3, and g5 = KAR4) with two replications was designed. The results showed there were variations in plant height, stem diameter, number of nodes, number of floret, and stalk length on polyploidy Chrysanthemum genotypes due to different planting media. The m4 = top soil + cocopeat can increase plant height, stem diameter, number of nodes, stalk length and number of floret KAR4 genotype.

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Chrysanthemum (Chrysanthemump) is a one of the most popular cutting flower commodities in Indonesia. The beauty of colors and variations in the shape of flowers and the low level of withering cause Chrysanthemum to be in great demand. The polyploid chrysanthemum has some superior properties but the growth rate and flowering time is slow due to colchicine. The study aimed to determine the influence of the concentration of the cytokinins in the growth and productivity of chrysanthemum polyploid genotypes. The experimental design as used Split Plot Design consists of 2 factors and 2 replications. The first factors were concentration of the cytokinin (Si, i are 1,…,4) as a main plot with different levels about 0, 1, 2,3, 4 ml L−1 of cytokinin solutions, respectively. The second factorswere the third generation of the polyploid chrysanthemum (G) genotype as a sub plot with 4 genotype, namely: g0 = KRA0, g1 = KRA1, g2 = KRA2, and g3 = KRA3. Based on the experiments and analysis results, it was found that the treatment of 3 ml L−1 of the cytokinin solution produced 16 shoots while the polyploid chrysanthemum genotype KRA2 gave the best response to the number of shoots at 12 WAP compared to other polyploid chrysanthemum genotypes.

Limited available water, especially in dry land, causes decreasing production of vegetable plants. Cauliflower originates from subtropical regions which require water. Mulching can manage water to a limited extent. An experiment was carried out in the lowlands to find out whether cauliflower cultivar Orient hybrid could grow in an environment with water available under optimal conditions combined with the use of rice straw mulch. The experimental results show that the Orient hybrid of cauliflower is a lowland plant that can provide the same (marketable curd) yield even with the water conditions below the field capacity (75% FC). The use of rice straw mulch doses of 5-10 t ha-1 can help maintain water available for plants. The Orient cultivar hybrid is a lowland cauliflower sufficiently tolerant to lack of water.