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All Journal Pelita Perkebunan Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science JURNAL AGRIVIGOR
Ambo Ala, Ambo
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Strategy of Soybean Management (Glycine max L.) to Cope with Extreme Climate Using CropSyst© Model Aminah, Aminah; Ala, Ambo; Musa, Yunus; Padjung, Rusnadi; Kaimuddin, Kaimuddin
AGRIVITA, Journal of Agricultural Science Vol 39, No 3 (2017): OCTOBER
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v39i3.1020

Abstract

This research was carried out to verify the CropSyst© plant model from experimental data in a soybean field and to predict planting time along with its potential yield. The researches were divided into two stages. First stage was a calibration for model on field from June to September 2015. Second stage was the application of the model. The required data models included climatic, soil and crop’s genetic data. There were relationship between the obtained data in field and the simulation from CropSyst© model which was indicated by 0.679 of Efficiency Index (EF) value. This meant that the CropSyst© model was well used. In case of Relative Root Mean Square Error (RRMSE), it was shown at 2.68 %. RRMSE value described that there was a 2.68 % error prediction between simulation and actual production. In conclusion, CropSyst© can be used to predict the suitable planting time for soybean and as the result, the suitable planting time for soybean on the dry land is the end of rainy season (2 June 2015). Tanggamus variety is the most resistant variety based on slow planting time, because the decreased percentage of production was lower (8.3 %) than Wilis (26.3 %) and Anjasmoro (43.0 %).
Implication of the root growth and soil macropores distribution on sugarcane yield in Takalar, Indonesia Safitri, Wina; Ala, Ambo; Gusli, Sikstus; Salim, Iqbal
Journal of Degraded and Mining Lands Management Vol. 11 No. 4 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.114.6175

Abstract

This study examined the relationship between the decline in sugarcane productivity and the distribution of macropores and depth of root penetration in sugarcane plantations in Takalar during one planting period (October 2021-September 2022). There were five observation points (P1, P2, P3, P4, and P5) in one hectare of land to measure the distribution of soil macropores using methylene blue solution. Cross-sections of the soil were made to observe the presence of plant roots at a depth of 0-40 cm with a width of 60 cm. In each plot, disturbed soil samples were collected to measure soil texture, soil organic matter (SOM), nitrogen (N), phosphorus (P), and potassium (K) contents. Other measurement parameters were the infiltration rate and plant productivity. The results indicated that SOM and NPK levels at the research location were deficient, serving as the first indicators of problematic soil. Macropore observations revealed that macropores were distributed only at a less than 10 cm soil depth. This distribution limited the penetration of plant roots to a depth of   0-40 cm. The root length density (RLD) value indicated the absence of roots at depths of 30-40 cm in plots P2 and P3. The field findings explained why sugarcane production in Takalar only achieved 50%, around 40 t ha-1 from the first ratoon sugarcane harvest, instead of the expected 70-80 t ha-1.
Improving sugarcane productivity on marginal soil in Takalar, Indonesia, through the application of sugarcane factory waste Safitri, Wina; Ala, Ambo; Gusli, Sikstus; Salim, Iqbal
Journal of Degraded and Mining Lands Management Vol. 12 No. 1 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.121.6809

Abstract

Marginal soil with low nutrient content is a crucial problem in reducing crop productivity, including sugarcane. This study aimed to elucidate the possible improvement of the physical and chemical properties of marginal soil through the application of organic waste from sugar factories, namely kettle ash and press mud. Nine treatment combinations of 0, 10, and 20 t ha-1 of each kettle ash and press mud were arranged in a two-factor randomized factorial design with three replications. Soil organic matter, N, P, and K, soil aggregate stability, and sugarcane productivity were measured after planting sugarcane for five months. The results showed that the application of kettle ash and press mud, especially with a ratio of 20 t ha-1 kettle ash and 10 t ha-1 press mud, was able to reduce the leaching of organic matter and improve sugarcane growth, particularly increasing the number of tillers by 16%, stem height by 14%, and diameter by 16%. The sugarcane productivity obtained was 58.02 t ha-1. Other portions of kettle ash and press mud did not have a favorable effect on sugarcane productivity. This study provided practical insights for increasing agricultural productivity, especially in sugarcane plantations.
Aplikasi Pupuk Organik Cair dan Urea pada Pertumbuhan dan Produksi Padi (Oryza sativa L.) dengan Sistem Pengelolaan Air AWD (Alternate Wetting and Drying) Yassi, Amir; Ala, Ambo; Amsal, Afifah Nur Fahira
Jurnal Agrivigor VOLUME 15 NOMOR 2, DESEMBER 2024
Publisher : Departemen Budidaya Pertanian Fakultas Pertanian UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ja.v15i2.43238

Abstract

Penelitian ini dilakukan untuk mengetahui dan mempelajari efektivitas kombinasi konsentrasi Pupuk Organik Cair dan dosis pupuk Urea dengan sistem pengelolaan air secara AWD (alternate wetting and drying) terhadap pertumbuhan dan produksi Tanaman Padi. Penelitian dilaksanakan di lahan persawahan desa Kalosi Alau, kecamatan Duapitue, kabupaten Sidenreng-Rappang, Sulawesi Selatan (3°55'21"LS 120°00'40"BT) pada bulan pada Juli sampai Oktober 2022. Penelitian dilakukan dengan menggunakan rancangan petak terpisah dengan petak utama yaitu perlakuan dosis urea yang terdiri dari tiga taraf, yaitu: 0 kg.ha-1, 50 kg.ha-1, 100 kg.ha-1 dan 150 kg/ha serta anak petak yaitu konsentrasi pupuk organik cair (POC), terdiri dari empat taraf yaitu: 0 cc.l-2 air, 2 cc.l-1 air, 4 cc.l-1 air dan 6 cc.l-1 air. Terdapat 16 kombinasi perlakuan yang di ulang sebanyak tiga kali sehingga secara keseluruhan terdapat 48 satuan percobaan. Setiap unit percobaan terdiri dari 5 sampel, sehingga terdapat 240 sampel tanaman. Hasil penelitian menunjukan bahwa pemberian 100 kg.ha-1 urea (u2) menghasilkan rata-rata anakan produktif tertinggi yaitu 17,34 batang, dan rata-rata klorofil total tetinggi yaitu 338,73 µmol.m-2 dan dosis 150 kg.ha-1 urea (u3) menghasilkan rata-rata produksi per petak tertinggi yaitu 13,16 kg.ha-1, rata-rata produksi per hektar tertinggi yaitu 5,90 ton.ha-1, rata-rata klorofil a tertinggi yaitu 237,20 µmol.m-2, rata-rata klorofil b yaitu 97,49 µmol.m-2. Sedangkan konsentrasi pupuk organik cair 6 cc.l-1 (p3) memberikan rata-rata tertinggi pada parameter jumlah anakan poduktif yaitu 17,52 batang, rata-rata produksi per petak 12,51 kg.ha-1, sedangkan konsentrasi pupuk organik cair 4 cc.l-1 (p2) memberikan rata-rata tertinggi pada parameter produksi per hektar yaitu 5,83 ton.ha-1.
Strategy on the Implementation of Good Agriculture Practice (GAP) in Smallholder Plantation to Improve the Production and Quality of Arabica Coffee Bean in Enrekang Regency Indonesia: Strategi Penerapan Good Agriculture Practices (GAP) pada Perkebunan Rakyat untuk Meningkatkan Produksi dan Kualitas Kopi Arabica di Kabupaten Enrekang, Indonesia T, Irfansyah; Ridwan, Ifayanti; Ala, Ambo
Jurnal Agrivigor VOLUME 12 NOMOR 1, JUNI 2021
Publisher : Departemen Budidaya Pertanian Fakultas Pertanian UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ja.v12i1.14319

Abstract

This study aims to determine the priority scale in the management of Arabica coffee plants based on Good Agriculture Practices (GAP) to increase the production, productivity and quality of Arabica coffee in smallholder coffee plantations. The research was conducted in three districts in Enrekang Regency, namely Baroko, Baraka, and Masalle District, respectively, from December 2017 to January 2018. The research was in the form of a survey (literature study, observation, and interviews), the sample selection was carried out using purposive sampling on 30 respondents from Agriculture and Plantation Office of Enrekang Regency, Extension officers, Famers Groups, and coffee plant experts. Quantitative descriptive data analysis using Expert Choice Version 11 was conducted on the survey results for determining the priority scale of GAP components for Arabica coffee. The study results show that the priority scale of applying GAP for coffee plants in Enrekang Regency was the cultivation aspect (46.7%) consisted of pruning, fertilization both types and application method of the fertilizer, pest and disease control, and varieties. Secon priority was the aspect of post-harvest (27.9%) followed by harvest aspect of 25.5%.
Application of Coconut Shell Biochar and Rhizobacteria Consortium to Increase Cocoa Production (Theobroma cacao L.) Laurenze, Reynaldi; Ala, Ambo; Saleh, Ifayanti Ridwan
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol. 39 No. 2 (2023)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v39i2.545

Abstract

The decline in Indonesia’s cocoa production as a result of soil fertility degra dation causes fertilization to become one of effective effects. Because of that, it is possible to restore soil fertility potential by using soil fertility enhancer biochar combined with rhizobacteria consortium to create suitable conditions for plant.This research was aimed to study and investigate coconut shell biochar interacts with rhizobacteria in increasing cocoa production. This research was conducted at Kodeoha, North Kolaka, Southeast Sulawesi from September 2022 until March 2023. A split plot design with three replications each consisted of two experimental units was used as an experimental design. Biochar dosage as the main plot consisted of four levels, namely 0 ton ha-1 (control), 2.5 ton ha-1, 5 ton ha-1, and 7.5 ton ha-1 and rhizobacteria concentration as the sub plots consisted offour levels, namely 0 mL L-1, 50 mL L-1, 100 mL L-1, and 150 mL L-1. Results of this research showed a significant interaction between biochar 5 tons ha-1 and rhizobacteria 100 mL L-1 which provide best result for chlorophyll a (336 μmol m-2), chlorophyll b (150 μmol m-2), and total chlorophyll (484 μmol m-2). The interaction between biochar 5 tons ha-1 and rhizobacteria 150 mL L-1 showed the best results for number of harvested pods per tree (10.00 pods), bean weight per tree (606 g trees-1), stomata opening area (31 μm2). The interaction between biochar 7.5 tons ha-1 and rhizobacteria 150 mL L-1 showed the best results on the weight of 100 dry beans at water content 8% (159.03 g)
Co-Authors Aminah Aminah AMIR YASSI Amsal, Afifah Nur Fahira Gusli, Sikstus Ifayanti Ridwan, Ifayanti iqbal salim Kaimuddin Kaimuddin, Kaimuddin Laurenze, Reynaldi Padjung, Rusnadi Safitri, Wina Saleh, Ifayanti Ridwan T, Irfansyah YUNUS MUSA