Browsing by Author "Hamzah, Muhammad"

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    Pengaruh Pupuk Controlled Release Terhadap Pertumbuhan Vegetatif Dan Serapan Hara Bibit Kelapa Sawit (Elaeis gueneensis Jacq.) Pada Dua Perbedaan Volume Medium Tanam Di Pre Nursery
    (2016-03-02) Hamzah, Muhammad
    The aim of this study is to determine the effect of application of controlled release fertilizer, adoption of planting medium and the interaction between controlled release fertilizer with planting medium to the vegetative growth and nutrient uptake of oil palm seedlings in pre nursery. Field trials lasted from January to March 2013, while the nutrient analysis in the laboratory in April until May 2013. Design of the study used a randomized block designed (RBD) 2 Factorial, the first factor was the difference in the volume of growing medium (M), namely M1: hyplug medium, M2 : polybag medium. The second factor was the application of Controlled release fertilizer/Crf (P), P1 : Crf NPKMg 20-6-14-3, P2 : Crf NPKMg 17-8-9-3. Data results of variance followed by DNMRT test at level 5 %. Moreover, the parameter of observation was observed between the other parameters of the vegetative growth of seedlings plant height, number of leaves, leaf color, stem diameter, leaf dry weight, root dry weight, the ratio of leaf to root dry weight, root volume and nutrient uptake parameters of nitrogen, phosphorus, potassium and magnesium. The results of this study concluded that the use of the medium polybag, Crf NPKMg 17-8-9-3 fertilizer application and the interaction between the planting medium polybag with fertilizer Crf NPKMg 17-8-9-3 be the best combination for the treatment and vegetative growth parameters and nutrient uptake oil palm seedlings.
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    Variabilitas Dan Heritabilitas Mutu Biji Berbagai Genotipe Kedelai (Glycine max (L) Merril) Pada Dua Cara Aplikasi Pupuk Nitrogen
    (2015-08-04) Hamzah, Muhammad; Rasyad, Aslim; Zuhry, Elza
    The needs for soybean in the country are currently met by imported. In the last ten years, more than 60% of the soybeans are imported from various countries every year. The purpose of this study was to determine the components of the population of soybean seed quality in two ways of application nitrogen fertilizers and determination of the value of heritability and the correlation between yield components in soybean seed quality. The design used was Randomized Design Group (RAK) 2 factorials. The first factor is the genotype of soybean and the second method is the application of nitrogen fertilizer in the second degree. The results of this study indicated a significant component of the diversity of genotypes for all the observed properties such as the weight of seeds per plant, weight of 100 seeds, dry seed yield per plot, oil content and protein content of soybean seeds. Variety of environmental components in the form of nitrogen fertilizer application was significant only for the nature of the seed weight per plant, dry seed yield per plot and seed protein content. The component of the interaction between genotype diversity with fertilizer significant was only for the nature of the oil content of seeds. Heritability value of all properties that were observed demonstrated significant value when compared with the twice value of its standard error (SE). Soybean seed protein content was negatively correlated with yield components but the oil content of soybeans was not correlated with the yield components. Meanwhile the protein content of the oil contents of soybeans a negative correlation, although not significant.