Untari, Tri and Niswati, Ainin and Sunyoto, . and Buchari, Henrie CHANGES IN SOIL MICROBIAL BIOMASS CARBON ULTISOLS SOILS AS A RESULT OF APPLICATIONS HUMIC ACID AND FERTILIZATION P. Jurnal Tanah dan Iklim. ISSN 1410-7244 (Submitted)

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Abstract

Soil microbial biomass carbon (C-mic) is one indicator of soil fertility. The application of humic acid, vermicompost tea, and P fertilization given to the soil will affect the activity of soil microorganisms. The objectives of this experiment was to study the effect of application of humic acid, vermicompost tea, and P fertilization on C-mic. This research was conducted in December 2017 until April 2018 at the Natar Agricultural Technology Research Institute (BPTP) Experimental Garden, using a Randomized Block Design (RBD) arranged in factorial with two treatment factors. The first factor is the application of humic acid (H), ie without the application of humic acid (H0), application of commercial origin humic acid (H1), and application of humic acid from vermicompost tea (H2). The second factor was P (P) fertilization which was divided into 4 dose levels namely without TSP fertilizer (P0), 100 TSP fertilizer ha-1 (P1), 200 kg ha-1 TSP fertilizer (P2), and 300 kg TSP fertilizer ha-1 (P3). The data obtained were tested for the homogeneity of the variety with the Bartlett Test and the additivity of the data tested by the Tukey Test. Data were analyzed by variance analysis and continued with BNT test at the level of 5%. The relationship between C-organic, soil pH, soil temperature, soil moisture content, dry weight, and shell weight of seeds with C-mic were tested by correlation test. The results showed that the application of humic acid and P fertilization did not significantly affect C-mic, and there was no interaction between the two observations 7 days after planting (DAP), 56 DAP, and 104 DAP. There is a correlation between soil C-organic at the observation of 7 DAP, 56 DAP, and 104 DAP, soil moisture content at 7 DAP, soil pH at 56 DAP and 104 DAP, soil temperature at 104 DAP, dry weight at 55 DAP, shell weight corn at 113 DAP with C-mic.

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User: Prof Dr Ainin Niswati
Date Deposited: 05 Nov 2019 10:51
Last Modified: 05 Nov 2019 10:51
URI: http://repository.lppm.unila.ac.id/id/eprint/15397

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