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Methane emission and rice growth on clayey soil under controlled water regime Kaharuddin Kaharuddin; Sikstus Gusli; Muh Jayadi; Amirullah Dachlan; Andi Muh. Ilham
Journal of Agriculture and Applied Biology Vol 3 No 2 (2022): Journal of Agriculture and Applied Biology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jaab.03.02.05

Conventional lowland rice cultivation involves flooding the paddy from planting to close to harvest, and high N fertilization. This practice leads to large amount of methane emissions. We studied the effect of soil water regime control on methane gas emissions and growth of several rice varieties on clayey soil. The experiment was arranged according to Split Plot Design. The main plot was water regime, i.e. continuous flooding (2-cm inundation), and intermittent flooding (flooded 2 cm then allowed to dry until the soil started to cracks). The sub-plots consisted of 3 rice varieties, i.e. Inpari 32, Mekongga, and Cisadane. Together, there were six treatment combinations, repeated 4 times. We measured methane emission, plant height, number of tillers per clump, number of productive tillers, and root volume. We computed analysis of variance, then performed Duncan Multiple Range Test. We found, at 57 and 73 days after planting, continuous flooding resulted in much (statistically) higher methane gas emissions than intermittent flooding (about 2 times greater for both Inpari and Cisadane, and 5 times greater for Mekongga). The two water regimes examined did not result in differences in plant height, number of tillers, productive tillers and root volume of the three varieties, although the flooded treatment tended to slightly give taller plant, more tillers and productive tillers. In conclusion, intermittent flooding significantly suppresses methane emission compared to continuous flooding. However, certain rice variety produces more methane than others. While intermittent flooding reduced methane emission, it did not statistically affect rice growth compared to continuous flooding.

Methane emission and rice growth on clayey soil under controlled water regime Kaharuddin Kaharuddin; Sikstus Gusli; Muh Jayadi; Amirullah Dachlan; Andi Muh. Ilham
Journal of Agriculture and Applied Biology Vol 3 No 2 (2022): Journal of Agriculture and Applied Biology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jaab.03.02.05

Conventional lowland rice cultivation involves flooding the paddy from planting to close to harvest, and high N fertilization. This practice leads to large amount of methane emissions. We studied the effect of soil water regime control on methane gas emissions and growth of several rice varieties on clayey soil. The experiment was arranged according to Split Plot Design. The main plot was water regime, i.e. continuous flooding (2-cm inundation), and intermittent flooding (flooded 2 cm then allowed to dry until the soil started to cracks). The sub-plots consisted of 3 rice varieties, i.e. Inpari 32, Mekongga, and Cisadane. Together, there were six treatment combinations, repeated 4 times. We measured methane emission, plant height, number of tillers per clump, number of productive tillers, and root volume. We computed analysis of variance, then performed Duncan Multiple Range Test. We found, at 57 and 73 days after planting, continuous flooding resulted in much (statistically) higher methane gas emissions than intermittent flooding (about 2 times greater for both Inpari and Cisadane, and 5 times greater for Mekongga). The two water regimes examined did not result in differences in plant height, number of tillers, productive tillers and root volume of the three varieties, although the flooded treatment tended to slightly give taller plant, more tillers and productive tillers. In conclusion, intermittent flooding significantly suppresses methane emission compared to continuous flooding. However, certain rice variety produces more methane than others. While intermittent flooding reduced methane emission, it did not statistically affect rice growth compared to continuous flooding.

POTENSI KESUBURAN TANAH TANAMAN KOPI ROBUSTA DAN PETA PENYEBARANNYA MENGGUNAKAN APLIKASI GIS DI KECAMATAN KINDANG Muh. Jayadi; Rismaneswati Rismaneswati; Okky Irawan
Jurnal Agritechno Jurnal Agritechno Vol. 16, Nomor 1, April 2023
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70124/at.v16i1.986

Kindang District is an allotment area for robusta coffee plantations. In terms of climate, Kindang District has the potential to produce high coffee production. However, there was a decrease in coffee production. Therefore, it is necessary to analyze the potential of soil fertility related to biophysical aspects for the development of robusta coffee plants based on land suitability. This study aims to analyze the potential for soil fertility based on land suitability for robusta coffee. This research method uses a descriptive method and determines the land suitability index using the square root approach. Profile observations were made at 11 points spread across the Kindang District. The results of this study indicate that the land in Kindang District belongs to the marginal land suitability class (S3) for robusta coffee with a land suitability index value between 25.51-45.18. The limiting factors found were slope, soil depth and soil pH with an area of 9,660 ha.

Keanekaragaman Biota Tanah pada Kebun Kakao di Desa Parenring Kecamatan Lilirilau Kabupaten Soppeng: Diversity of Soil Biota in Cocoa Farms in Parenring Village, Lilirilau District, Soppeng Regency Syamsul Arifin Lias; Naurha Rhamadani; Muh. Jayadi
Jurnal Ecosolum Vol. 12 No. 1 (2023): JUNI
Publisher : Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ecosolum.v12i1.25334

This study aims to determine the diversity of soil fauna based on the landscape and soil depth in the cocoa plantation in Parenring Village, Lilirilau District, Soppeng Regency. This research was conducted from October 2020 to January 2021 located on a cocoa plantation in Parenring Village, Lilirilau District, Soppeng Regency. This research was conducted by taking soil samples using the Systematic Sampling (SYS) method, using monolithic soil sampling and disturbed soil samples. The observation of soil biota, hand sorting and microscopy were used. Based on the research results, soil samples in the back area had the highest soil biota diversity (H' = 1.32), followed by the valley area (H' = 1.29) and the middle area (H' = 1.18). Soil biota diversity is included in the medium criteria.

Efektivitas Pupuk Organik Cair Bawang Merah dan Limbah Bawang Merah Terhadap Perubahan Sifat Kimia Tanah dan Pertumbuhan Bawang Merah: Effectiveness of Red Onion Liquid Organic Fertilizer and Red Onion Waste on Changes in Soil Chemical Properties and Red Onion Growth Muhammad Nathan; Muh. Jayadi; Hidayana Thamrin
Jurnal Ecosolum Vol. 12 No. 1 (2023): JUNI
Publisher : Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ecosolum.v12i1.26545

Soil has an important role "in agriculture for the growth and production" of plants. The combination of organic and inorganic fertilizers can increase crop productivity and improve soil quality on land so that it can be used sustainably. One of the potential plants that can be used as a basic ingredient of organic fertilizer is red onion. This study aims to determine the effect of red onion liquid organic fertilizer on changes in soil chemical properties and plant growth. This research was conducted using a factorial randomized block design (RBD) with 2 factors. The first factor is the dose of organic fertilizer and the second factor is the dose of inorganic fertilizer. Parameters observed were pH, C-Organic, N, P, K, tuber weight, plant fresh weight, number of leaves and plant height. The results showed that red onion organic fertilizer can lower soil pH and increase soil C-Organic, N, P and K. The combination of the D1KB2 treatment (50% basic fertilizer + 15,000 ppm red onion waste) gave the best results in increasing soil organic C, Phosphate and Potassium. Conclusion. The interaction of inorganic fertilizers and red onion liquid organic fertilizer had a significant effect on tuber weight and plant wet weight, and had no significant effect on plant height and number of leaves.

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