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All Journal Journal of Tropical Soils AGRICOLA
Samen Baan, Samen
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Agriculture, Biological Sciences & Forestry Environmental Science Veterinary

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Pengaruh Pemberian Beberapa Jenis Pupuk Organik Terhadap Penyakit Karat Kedelai dan Produksinya Martanto, Eko Agus; Tanati, Adelin; Baan, Samen; Risamasu, Claudia N
AGRICOLA Vol 11 No 1 (2021): AGRICOLA
Publisher : Universitas Musamus, Merauke, Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/ag.v11i1.3595

Abstract

This study aims to determine the effect of giving several organic fertilizer formulations to the intensity of soybean leaf rust disease and its production, which in turn can increase farmers' income in this area. The study was conducted using randomized block design (RBD) with 3 replications. The treatments were husk ash, compost, chicken manure, and goat manure. The parameters observed included leaf rust disease intensity, disease progression rate, plant height, number of leaves, number of branches, weight of 100 seeds and weight of seeds per plot. Data analysis was performed using Analysis of Variance (ANOVA), if the treatment has a significant effect, it is followed by the DMRT test at the 95% level. The result showed that (1) the fertilizer formulation given caused different responses to the parameters of soybean rust disease intensity, plant height, number of leaves, number of branches, weight per 100 seeds and weight of seeds per plot, (2) The best fertilizer for controlling soybean leaf rust disease is goat manure, and (3) the best fertilizer formulation to produce production is abusekam with a production of 2156.66 gr / plot (equivalent to 3.594 tons / ha)
Spatial Distribution of Soil Properties and Soil Fertility Status in the Paddy Rice Field of Oransbari Hastuti, Irena Tri; Djuuna, Irnanda Aiko Fifi; Baan, Samen; Bachri, Samsul; Kubangun, Siti Hajar; Musaad, Ishak
JOURNAL OF TROPICAL SOILS Vol 30, No 2: May 2025
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i2.61-68

Abstract

Soil properties and soil fertility status of paddy rice fields are considered important factors related to the yield and production of rice; therefore it is essential to understand those properties across the farm.  The objectives of this research is to quantify the soil properties and soil fertility status of paddy-rice soil and their spatial variability in Oransbari. Forty-two composite soil samples (0-30 cm) were taken across paddy rice fields and analyzed for soil chemical properties and fertility status.  Geostatistical analysis and ordinary kriging interpolation methods were used to quantify soil variability and its fertility status across the farm.  The results showed that total soil Nitrogen ranges from 0.11% to 0.17%), organic-C (1.47-6.94%), C/N ratio (11-47), total-P (13-99 mg 100 g-1), available-P (30-227 mg kg-1), total-K (27-54 mg 100 g-1), soil pH (5.83-6.93), base saturation (70-100%), and CEC is 30.51-51.23 me 100 g-1. The spatial variability of all soil characteristics exhibited medium and fit the stable model, except for available Phosphorus and Potassium.  Most rice paddy fields in Oransbari showed high soil fertility status, which indicated that high-yield rice production can be achieved for this region, however, land management factors should be considered for sustainable land use.
Spatial Distribution of Soil Properties and Soil Fertility Status in the Paddy Rice Field of Oransbari Hastuti, Irena Tri; Djuuna, Irnanda Aiko Fifi; Baan, Samen; Bachri, Samsul; Kubangun, Siti Hajar; Musaad, Ishak
JOURNAL OF TROPICAL SOILS Vol. 30 No. 2: May 2025
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i2.61-68

Abstract

Soil properties and soil fertility status of paddy rice fields are considered important factors related to the yield and production of rice; therefore it is essential to understand those properties across the farm.  The objectives of this research is to quantify the soil properties and soil fertility status of paddy-rice soil and their spatial variability in Oransbari. Forty-two composite soil samples (0-30 cm) were taken across paddy rice fields and analyzed for soil chemical properties and fertility status.  Geostatistical analysis and ordinary kriging interpolation methods were used to quantify soil variability and its fertility status across the farm.  The results showed that total soil Nitrogen ranges from 0.11% to 0.17%), organic-C (1.47-6.94%), C/N ratio (11-47), total-P (13-99 mg 100 g-1), available-P (30-227 mg kg-1), total-K (27-54 mg 100 g-1), soil pH (5.83-6.93), base saturation (70-100%), and CEC is 30.51-51.23 me 100 g-1. The spatial variability of all soil characteristics exhibited medium and fit the stable model, except for available Phosphorus and Potassium.  Most rice paddy fields in Oransbari showed high soil fertility status, which indicated that high-yield rice production can be achieved for this region, however, land management factors should be considered for sustainable land use.
Co-Authors Adelin Tanati, Adelin Eko Agus Martanto Hastuti, Irena Tri Irnanda Aiko Fifi Djuuna Kubangun, Siti Hajar Musaad, Ishak Risamasu, Claudia N Samsul Bachri, Samsul