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SKRIPSI PENGARUH DOSIS PUPUK ORGANIK SUPER TW PADA BEBERAPA JENIS TANAH TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KOBIS BUNGA ( Brassica oleracea L. ) subvar. Cauliflora DC.
ABSTRACT
The aim of the experiment is study the influence of Super TW organic fertilizer dose to the growth and yield of cauli- flower (Brassica oleracea L.) subvar. cauliflora DC. on several kinds of soil as growth media.
The research was carried out on August 13, 1996 at Agri- culture Faculty, University of Tidar Magelang, Potrobangsan Village, North Magelang District, Magelang Regency, Central Java, with an altitude 376 m above sea level.
The research method uses (4x3) factorial experiment with randomized complete block design consist of three replications. Treatment analysed by analysis of variance at 5% level then tested by HSD at 5% level if significant and the orthogonal polinomial. First factor is Super TW organic fertilizer dose they are 0.15; 0.3; 0,6 kg/plant. Second factor is kinds of soil they are Latosol, Regosol and Grumusol.
The result of research shows that Super TW organic ferti- lizer dose gives a very significant effect for all observed parameters.
There was interaction between Super TW organic fertilizer dosage and kinds of soil for flowering age, flower diameter and the harvest age.
Super TW organic fertilizer 0.45 kg/plant gives highest yield for number of leaves, flower diameter and flower weight. Dose at 0.3 kg/plant causes the fastest of flowering age and harvest age.
The regosol soil causes the fastest of flowering age and the highest yield for flower diameter.
In this research, the highest yield is obtained by D2T2, it is 171.67 g or equivalent to 19.07 ton/ha and the lowest is obtained by DoT2, it is 100.25 g or equivalent to 11.14 ton/ha.
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