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The effect of nitrogen phosphorus potassium fertilizer and mixed media of red yellow podzolic soil and organic matter to the growth of pinus merkusii seedlings in various sizes of plastic bag


The effect of nitrogen phosphorus potassium fertilizer and mixed media of red yellow podzolic soil and organic matter to the growth of pinus merkusii seedlings in various sizes of plastic bag



Buletin Penelitian Hutan 481: 7-26



The objective of this research is to find out the effect of fertilization, mixing of nursery soil and organic matter, and size of plastic bag to the growth of Pinus merkusii seedlings. Fertilizer used was compound fertilizer of NPK, while the nursery soil was red yellow podzolic. Organic matter used were sawdust, coconut fibre dust, paddy straw dust and ilalang dust. Plastic bag was varied in diameter size. Research pattern used was 5 .times. 5 .times. 3 factorial experiment within randomized complete block design with four replications. The experimental unit was plastic bag with one seedling of Pinus merkusii. Each treatment combination consists of three plastic bags and each plastic bag consists of one seedling. Growth responses observed were height, diameter, root length and dry weight. Fertilization with NPK showed significant effect to the growth of height and diameter. Supplying NPK with dosage of 300 gram per m3 of media was sufficient to increase those two above responses. The media of pure red yellow podzolic soil was sufficient to increase the growth of Pinus merkusii seedlings. Supplying NPK fertilizer with dosage of 300 gram per m3 of media at plastic bag size of 12 cm height and 10 cm diameter was sufficient to increase the dry weight of seedlings.

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Related references

The effect of NPK fertilizer, and mixtures of red yellow podzolic soil and organic matter on the growth of Pinus merkusii seedlings in various sizes of plastic bag. Buletin Penelitian Hutan, Pusat Penelitian dan Pengembangan Hutan 481: 8-26, 1986

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