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INDONESIA
BUANA SAINS
Published by Universitas Tribhuwana Tunggadewi
ISSN : 14121638     EISSN : 25275720     DOI : -
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
BUANA SAINS p-ISSN : 1412-1638 | e-ISSN: 2527-5720 is a double-blind peer-reviewed, open-access journal, published by UNITRI PRESS. It publishes original and applied research in all areas of natural science. The Editorial goal is to provide a forum exchange and an interface between researchers and practitioners in any natural science related field.
Arjuna Subject : -
Articles 11 Documents
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Search results for , issue "Vol 18, No 1 (2018)" : 11 Documents clear
KETERSEDIAAN NITROGEN DAN POPULASI BAKERI TANAH DALAM SISTEM TANAM SRI (SYSTEM OF RICE INTENSIFICATION) Nurul Istiqomah; Tanya Naomi Indarto; Virgus Amien Nugroho; Cahyo Prayogo
BUANA SAINS Vol 18, No 1 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.311 KB) | DOI: 10.33366/bs.v18i1.936

Abstract

The obstacles that caused the declining of rice production is due to the reduction of soil fertility status. Various efforts were made to increase the production such as intensification and expansion in rice farming system. SRI cropping systems an alternative technique for improving soil productivity following maintaining water uses under an aerobic condition which exaggerated the raising of microorganisms activities in soil and improving the availability of nutrients particularly nitrogen status.This study was aimed to examine the impact of SRI system on mineral N status along with the population of soil bacteria which involving in nitrogen dynamic. The research was conducted in October 2015-March 2016 in Kepanjen-Malang using Randomized Block Design with 4 treatments and 4 replicates. Soil sampling was conducted at 0 and 100 Day After Planting (DAP) collecting at a depth of 0-20 cm and 20-40 cm. Measured soil parameter was including pH, organic-C, mineral N (NH4+ and NO3-). Soil bacteria are identified using plate count method (spread plate) for estimating their population. Analysis of Variance (ANOVA) was used followed by Duncan test at 5% level along with correlation and regression analysis.The results showed that the SRI cultivation system can increase the mineral N at the level of 14.09 ppm compared to their initial value, amounting to 57.48 ppm of Nitrate and the bacterial population at the level of 6.25 x 108 cfu g-1. The best treatment was found under the combination of NPK (15-15-15) and biofertilizer yielded at 8.42 t ha-1. Multivariate analysis results indicate that P0 treatment significantly different with treatment P1, P2, and P3. However, the treatment of P1 were not significantly different P3.

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