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All Journal Jurnal Ilmu Pertanian AGRIVITA, Journal of Agricultural Science JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA ASIAN JOURNAL FOR POVERTY STUDIES (AJPS) Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan TERRA : Journal of Land Restoration Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) jurnal Ilmu Pertanian (Agricultural Science) Akta Agrosia Journal of Statistics and Data Science
Mohammad Chozin, Mohammad
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Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Engineering Mathematics Social Sciences Other

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EMPOWERING THE SMALLHOLDER FARMERS TO GAIN MORE PROFITABLE RICE PRODUCTION Chozin, Mohammad; Sumardi, Sumardi; Sudjatmiko, Sigit
ASIAN JOURNAL FOR POVERTY STUDIES (AJPS) Vol 1, No 1 (2015)
Publisher : Regional Network on Poverty Eradication

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rice produced by smallholder farmers plays an important role in providing Indonesian food security where majority of the population are dependent on rice as the staple diet. This fact, however, does not necessarily make the smallholder farmers gain all the benefit from the rice they have been produced, including the financial profit. Improving the profitability of rice production in smallholding agriculture is often hampered by lack of human capital and access to infrastructure, market, and technologies. A series of programs were tailored for the smallholder farmers in Kemumu, North Bengkulu to improve their human capital, bargaining power, land productivity, market access, and eventually the financial profitability of the rice production processes as a whole. The programs were developed through value chain mechanism involving revitalization of the farmer group organization, development of farm gate seed merchandize, reduction the dependency on synthetic fertilizer, mentoring the on farm activities, development of the community rice processing, and developmentof rice marketing channels.
Comparative Effects of Soil and Foliar Applications of Tithonia-Enriched Liquid Organic Fertilizer on Yields of Sweet Corn in Closed Agriculture Production System Fahrurrozi, Fahrurrozi; Muktamar, Zainal; Setyowati, Nanik; Sudjatmiko, Sigit; Chozin, Mohammad
AGRIVITA, Journal of Agricultural Science Vol 41, No 2 (2019)
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.v41i2.1256

Abstract

Solid organic fertilizer is commonly applied for organic vegetable production in a closed agriculture production system as nutrient source. However, its availability is considered slow to sweet corn, and thus it is important to make additional nutrients supply as liquid organic fertilizer (LOF) through leaves. The experiments were conducted to compare effects of LOF application methods and to determine optimum LOF concentrations for sweet corn. Two separated factorial experiments, arranged in randomized complete block design with three replicates, were conducted from February to May and March to June 2015, respectively. The first factor was LOF application methods (soil and foliar) and the second factor was LOF concentration (0, 25, 50, 75, and 100 ppm). The observations focused on average weight of husked ear, length, weight and diameter un-husked ears. The results indicated that the effectiveness of soil application of LOF was 99.625 % as effective as foliar application in influencing sweet corn yields. Concentrations of LOF did not increase all observed variables, but yield attributes were within the range of variety description. It is concluded that in a closed production system, LOF application through soil is as effective as foliar application in affecting sweet corn yields.
Infestation of Helicoverpa armigera (Hubner) and Ostrinia furnacalis Guenee on three tropical altitude variations Ginting, Sempurna; Chozin, Mohammad; Sudjatmiko, Sigit
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 23 No. 1 (2023): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.12331-37

Abstract

Pest infestation is a major problem in corn cultivation because it causes a decrease in crop productivity or even crop failure. This study aimed to evaluate the level of crop damage caused by Helicoverpa armigera and Ostrinia furnacalis in three tropical altitude variations. Ten hybrid corns from cross-breeding strains and three commercial hybrid corn varieties were evaluated at three locations with different altitudes, classified as lowland (30 masl), midland (600 masl), and highland (1000 masl). The evaluation was carried out on the level of crop damage and plant resistance. The results showed that the highest percentage of H. armigera attack on hybrid corn was 75% at Caps 17B x Caps 23 (moderately susceptible) at the lowland and the lowest was 8% at Caps 2 x Caps 17A (resistant). The percentage of H. armigera attack was 100% at Caps 15 x Caps 22 (very susceptible) and the lowest was the evaluation of Caps 5 x Caps 17B was 58% (susceptible) at the midland. Meanwhile, the highest attack percentage was 92% on the Caps 17A x Caps 17B, Caps 17A x Caps 22, and Caps 5 x Caps 22 hybrids (very susceptible), while the lowest was 67% on the Caps 3 x Caps 17B and Secada hybrids (moderately susceptible) at the highland. O. furnacalis attack showed that all hybrid corns were classified as resistant except for Caps 5 x Caps 22 and Paragon was moderately resistant with a percentage attack of 25% at lowland. At the midland, Caps 5 x Caps 17B hybrid corn was classified as very susceptible with an attack of 92%, while Caps 15 x Caps 22 was classified as resistant with an attack percentage of 8%. At an altitude of 1000 masl, Caps 17A x Caps 17B, Caps 3 x Caps 17A, and Caps 5 x Caps 17B were moderately resistant with an attack percentage of 33% and other hybrids were resistant with an attack percentage of 8%.
Infestation of Spodoptera frugiperda on corn in Bengkulu at different elevations Ginting, Sempurna; Chozin, Mohammad; Sudjatmiko, Sigit
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 1 (2024): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.12438-47

Abstract

Pest infestation is a significant challenge in corn cultivation due to the potential damage it can cause, leading to reduced crop productivity or even complete crop failure. This study aims to assess the infestation of Spodoptera frugiperda on corn in Bengkulu, considering various elevations. Ten hybrids resulting from crosses between promising lines (Caps 2 x Caps 17A, Caps 3 x Caps 17A, Caps 3 x Caps 17B, Caps 5 x Caps 22, Caps 5 x Caps 17B, Caps 15 x Caps 22, Caps 17B x Caps 23, Caps 17A x Caps 17B, Caps 17A x Caps 22, Caps 22 x Caps 23) and three commercial hybrid varieties (Bonanza, Paragon, and Secada) were evaluated across three locations at different elevations: lowland (30 meters above sea level) (masl), midland (600 masl), and highland (1000 masl). The assessment focused on the extent of damage and the plant’s resistance to S. frugiperda infestations. The infestation of S. frugiperda is higher at an elevation of 30 masl compared to locations at 600 masl and 1000 masl. Scoring leaf damage caused by S. frugiperda infestation at 30 masl: 2.73–4.86, at 600 masl: 2.73–3.55, and at 1000 masl: 2.4–3.37.
Land Utilization Efficiency of Corn and Black Soybean Intercropping System on Ultisoll with Various Doses of Cow Dung Fertilizer and Weeding Frequency Anisha, Sukma Dwi Nur; Turmudi, Edhi; Chozin, Mohammad
TERRA : Journal of Land Restoration Vol. 7 No. 2 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.2.92-102

Abstract

The narrow land ownership status among farmers poses challenges for agricultural production, despite the increasing demand for agricultural products in both quantity and variety. To address this issue, intercropping—a planting system that involves cultivating multiple crop types simultaneously—has been employed. This system enhances land productivity, reduces farming risks, and ensures income sustainability for farmers. Corn and black soybeans are ideal crops for intercropping due to their mutually beneficial interactions. Key factors influencing the success of this system include the frequency of weeding and the application of cow dung fertilizer. This study aimed to identify the optimal dose of cow dung fertilizer and weeding frequency to achieve the highest crop yield and land use efficiency in a corn-black soybean intercropping system. Conducted from February to May 2021 in Pematang Gubernur Village, Bengkulu City, the experiment employed a Split Plot Design within a Complete Randomized Block Design (RCBD) with two factors and three replications. The main plot consisted of three weeding frequencies: no weeding, weeding once (2 WAP), and weeding twice (2 and 5 WAP). Subplots included cow dung fertilizer doses: 0, 5, 10, and 15 tons ha-1. Results indicated the highest sunlight utilization efficiency occurred with 2x weeding and 5–10 tons ha-1 of cow dung fertilizer. Land use efficiency (LER > 1) was achieved under these conditions, while black soybean generally exhibited lower light efficiency. These findings highlight the importance of proper weeding and fertilization practices to optimize land use, providing valuable insights for sustainable farming strategies in regions with limited arable land.  
Evaluation of the application of NPK liquid fertilizer on the growth performance and yield of the UBPR-6 rice line in shallow swampy areas Sumardi, Sumardi; Chozin, Mohammad; Widodo, Widodo; Suprijono, Eko; Vadillah, Syavirah
Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan Vol 22 No 2 (2024): Jurnal Agroqua
Publisher : University of Prof. Dr. Hazairin, SH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32663/ja.v22i2.4764

Abstract

Swamp land, especially shallow lowland swamps, has great potential and also has strategic value for the development of agricultural businesses, especially rice, to encourage the realization of a sustainable food self-sufficiency program. Fluctuations in water levels, which limit the application of fertilizer by spreading, can be reduced by the foliar fertilization method.  This research aims to evaluate the application of NPK liquid fertilizer on the growth performance and yield of the UBPR-6 rice line in shallow swampy areas. The experiment was carried out September 2022-January 2023 in shallow swampland at the Faculty of Agriculture, Bengkulu University. Using a Divided Plot design which places the NPK liquid fertilizer concentration (3.%, 6%, 9% and 12% as the main plot and application frequency (1, 2 and 3 times) as a subplot, with 3 replications. The results showed that high The plants were not affected by the application of liquid NPK fertilizer, but flowering accelerated along with increasing the concentration and frequency of fertilizer application. A concentration of 9% gave the best results with a yield of 3,505 kg per plot (6.25m2) or equivalent to 4.2 tons per hectare.
Penampilan Morfologis Galur-Galur Harapan Kedelai Hasil Persilangan Varietas Malabar dan Kipas Putih Nugroho, Amin; Suryati, Dotti; Chozin, Mohammad
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5332.155 KB)

Abstract

The increasing demand for soybean is driven by population growth and development of industry. The current import of soybean should be considered as pragmatic solution to fill the gap between supply and demand. In the long term, the domestic production of soybean has to be increased to minimize the dependency on imported soybean. As part of soybean breeding program for yield improvement, this study was undertaken to evaluate the performances of five elite lines (11 AB, 13 ED, 14 DD, 19 BE, and 25 EC) derived from cross of Malabar and Kipas Putih as compared to their parental varieties and Tanggamus (commercial variety). The evaluation was set up in a completely randomized block design with three replications. Significant variations among the genotypes were found on plant height, flowering date, number of fertile node, hundred seed weight, plant biomass, and protein and lipid contents, but not on number of productive branch, maturity date, pod number, yield per plant, and yield per plot. In most cases, the evaluated lines had intermediary performances between their parental varieties, although some lines produced earlier flowering, larger seed, higher protein content, and lower lipid content. 11 AB exhibited a superiority over its parental and Tanggamus in term of plant biomass and protein content.
Hubungan Antar Sifat Jagung Manis yang Dibudidayakan Secara Organik Lorenza, Eviya; Chozin, Mohammad; Setyowati, Nanik
Akta Agrosia Vol 19 No 2 (2016)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (339.586 KB)

Abstract

Capability of growing well under organic conditions is prerequisite for a sweet corn variety to provide high yield under organic cropping management. Therefore, development of high yielding sweet corn varieties for organic cropping system would require sufficient information on the association among the growth traits to facilitate the determination of criteria in the selection program. Objective of this study was to estimate the degree of association among plant growth and developmental traits, in terms of phenotypic and genotypic correlations, in 64 genotypes generated from a complete diallel cross of 8 inbred lines under organic cropping system. Study was conducted from January-March 2016 on Ultisol of Medan Baru, Kandang Limun, sub-district of Muara Bangkahulu, City of Bengkulu at 10 m above sea level. A randomized complete block design with three replications to allocate the genotypes on double row plots with 4 length and 20 cm planting space. No agrochemical inputs was applied in cultural practices. Data were collected for plant height,stem diameter, leaf area, leaf number, tasseling date, and silking date. Analysis of variance was performed to determine the significant variation among the genotype. The degree of association among trait was estimated by both phenotypic and genotypic correlations analysis. Analysis of variance showed significant variation for all observed traits. High phenotypic and genotypic correlations were revealed between the growth traits (plant height, stem diameter, leaf area, and leaf number) and between the developmental traits (tasseling date, and silking date). However, the growth traits showed low correlation to the developmental traits.
Agronomic Performances of Rice Lines on Non-Tidal Swampland Chozin, Mohammad; Silalahi, Sarina; Masdar, Masdar; Sumardi, Sumardi
Akta Agrosia Vol 22 No 1 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1045.522 KB)

Abstract

A successful rice production on swampland would require a planting material from high yielding varieties adaptated  to the swampy ecosystem. This study was carried out to compare the growth and yield characteristics of five rice lines and a check variety as grown on non-tidal swampland. The lines were F4 generation of bulk selection from the crosses involving Bengkulu swamp rice landraces (Hanafi Putih, Tigo-tigo, Harum Curup, and Lubuk Durian) and high yielding varieties for the irrigated field (Sidenuk and Bestari). The trial was conducted on a shallow non-tidal swampland with stagnant inundation no more than 50 cm in depth often occurred during the plant life cycle.  The lines and the check variety (Inpara 4) were arranged in a randomized complete block design with three replications. Observations were made for the agronomic performances of the plant, including plant height, total tiller number clump-1, effective tiller number clump-1, heading date, maturity date, panicle length, grain number panicle-1, 100-grain weight, and grain yield clump-1. Significant variation among the genotypes was found for all observed traits. On average, the evaluated lines showed comparable growth and yield performances to the check variety.  Tigo-tigo × Bestari was the tallest line and potential for medium depth swampland.  This line showed good overall agronomic performances and yielded relatively higher than the check variety, but delayed in attaining maturity. For shallow swampland, Hanafi Putih x Sidenuk exhibited the most potent line by having good overall agronomic and yield performances, except late in maturity.  For early maturing line, Lubuk Durian x Hanafi Putih showed its potential for shallow swampland. Although this line was not the best,  it showed better overall agronomic performances than the check variety. Keywords: F4 lines,  growth and yield performance, rice landrace, swampland, plant maturity
Partitioned Design Matrix Method for Two Factors Multivariate Design Alvionita, Renny; Nugroho, Sigit; Chozin, Mohammad
Journal of Statistics and Data Science Vol. 1 No. 1 (2022)
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jsds.v1i1.21010

Abstract

Factorial experiment often involves large data sets and the use of generalized inverse for the data analysis. It becomes less manageable as the data increased. The objective of this study is to evaluate the accuracy of partitioned design matrix method for two factors multivariate design. The design matrix is partitioned into several sub-matrices based on their source of variation. The partitioned design matrix method in two factors multivariate is much simpler than usual sigma summation method in calculating the sum of product matrix and the degrees of freedom. This method could also be used in explaining the derivation of the statistics for testing the hypothesis of the equality of the means which corresponds to the source of variation.
Co-Authors Abd. Rasyid Syamsuri Afrisa, Hendrio Alvionita, Renny Amin Nugroho Anisha, Sukma Dwi Nur Atra Romeida Barchia, M. Faiz Dwi Wahyuni Ganefianti, Dwi Wahyuni EDHI TURMUDI Eko Suprijono Fahrurrozi Fahrurrozi Faradilla, Rike Ladiasmi, Uci Lorenza, Eviya Masdar Masdar Nanik Setyowati SEMPURNA GINTING Sigit Nugroho Sigit Sudjatmiko, Sigit Silalahi, Sarina Sumardi . Suryati, Dotti Vadillah, Syavirah Widodo Widodo Zainal Muktamar