Article Per Year (5 Year)
p-Index From 2019 - 2024
0.444
P-Index
This Author published in this journals
All Journal Journal of Tropical Soils Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Jamalam Lumbanraja
University of Lampung
Agriculture, Biological Sciences & Forestry Engineering Environmental Science

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
The Effects Of Empty Fruit Bunch Treatments For Straw Mushroom Substrate On Physicochemical Properties Of A Biofertilizer Sugeng Triyono; Agus Haryanto; Dermiyati Dermiyati; Jamalam Lumbanraja
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 2 (2019): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1282.367 KB) | DOI: 10.23960/jtep-l.v8i2.120-129

Abstract

This research aims to elaborate characteristics of an organic fertilizer, named as “Organonitrofos”, produced from agricultural wastes supplemented with spent mushroom substrate (SMS) from oil palm empty fruit bunch (EFB).  After the experiment of the straw mushroom cultivation was over, the spent EFB was used as one of raw materials for the experiment of Organonitrofos bifertilizer production. Completely Randomized Design was implemented in the experiment of mushroom cultivation.  Tereatments consisting of inorganic fertilizer and organic fertilizer factors were applied on the EFB substrate preparation.  The inorganic fertilizer and the organic fertilizer each included 3 levels of doses, with 3 replications.  After the experiment of the straw mushroom cultivation was over, the spent EFB was used in the experiment of the organic fertilizer production.  The spent EFB was mixed with other materials using ratio of 1:1 by volume.  The other materials constisted of cattle manure, chicken litter, cocodust, rice husk ash, and MSG industry waste sludge with ratio of 6:1:1:1:1 by volume.  After all the materials of every experiemental unis were mixed, fermentation of organic biofertilizer was started with the treatment and the experimental design held the same as those used in the experiment  of the mushroom production.   The results showed that there was no significantly different among the parameters observed at p<0.05. Winthin 3 month priod of fermentation; however, the screened portion of the compost produced increased to 88.54±1.69% of total weight.  C-N ratio (12.80±0.55), organic C (16.11±0.59), total N (1.26±0.59), total P (3.04±0.19), and total K (0.42±0.04) of finished compost met the SNI  19-7030-2004 requirement.  Dry weight  lost of 2.58±0.59 and ash of 53.96±1.42 content were noted from the finished compost.  The organic C content and some other chemical proserties were relatively better than those in previous variants of Organonitrofos.   Keywords: Compost, Empty fruit bunch, Organic fertilizer
The Behavior of Ammonium Exchange (Q/I) in Soil, Nitrogen and Carbon Uptake, and Mung Beans (Vigna radiata L.) Yields as Affected by Tillage and Fertilization at the Sixth Planting Period in Ultisol Soil Septi Nurul Aini; Omita Mega Nurtyas; Jamalam Lumbanraja; Abdul Kadir Salam
JOURNAL OF TROPICAL SOILS Vol 27, No 3: September 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i3.121-131

Abstract

Ultisol soil has a low organic matter content, CEC, and pH, causing an insufficient buffering capacity for N nutrients, especially NH4+. The objective of this study was to determine the effect of tillage and fertilization on the quantity and intensity (Q/I) of Ammonium (CRNH40, PBCNH4+, NH40, KG) in the soil, plant N and C uptake, and mung bean yields at the sixth growing season in ultisols. This study was arranged in a 2 × 2 factorial in a Randomized Block Design (RBD). The first factor was the tillage system (T), namely minimum tillage (T0) and intensive tillage (T1). The second factor was the fertilization (P), namely without fertilizer application (P0), and with fertilizer application (NPK 200 kg ha-1 + 1 Mg ha-1 chicken manure) (P1). Each treatment was replicated four times. The results showed that the application of NPK fertilizer significantly affected the mung bean yield, mung bean plant Nitrogen and Carbon uptake at harvest time. While, the intensive tillage had a very significant effect on increasing the N uptake compared to the minimum tillage. Minimum tillage and fertilization increased Q/I parameters (PBCNH4+, KG, CRNH40, and NH40). The parameter of Q/I (CRNH40) was significantly correlated with mung bean plant N and C uptake. PBCNH4+ and KG were significantly correlated with mung bean yields.
Co-Authors Abdul Kadir Salam Agus Haryanto Dermiyati Dermiyati Omita Mega Nurtyas Septi Nurul Aini