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All Journal Jurnal Ilmu Pertanian Journal of Tropical Soils AGRIVITA, Journal of Agricultural Science JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA ASIAN JOURNAL FOR POVERTY STUDIES (AJPS) TERRA : Journal of Land Restoration AGRITROPICA : Journal of Agricultural Sciences Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) jurnal Ilmu Pertanian (Agricultural Science) Akta Agrosia
Sigit Sudjatmiko, Sigit
University of Bengkulu
Agriculture, Biological Sciences & Forestry Engineering Environmental Science Social Sciences

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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.
Response of Growth and Yield of Soybean to Urea Application Frequency and Coffee Husk Compost Dosage in Coastal Land Sirateman, Selamat; Pujiwati, Hesti; Widodo; Gusmara, Herry; Sudjatmiko, Sigit; Prameswari, Wuri
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.7.2.79-91

Abstract

Utilizing marginal land, such as coastal areas, offers a viable approach to increasing soybean production. However, coastal lands are often characterized by low nutrient content and high porosity, necessitating effective strategies to optimize crop growth and yield. This study aimed to examine the interaction between urea application frequency and coffee husk compost dosage, identifying the best combination for enhancing soybean performance on coastal land. The research was conducted from November 2023 to February 2024 in Bengkulu City, Indonesia, at an elevation of approximately 5 meters above sea level. A Randomized Complete Block Design (RCBD) was employed with two factors: coffee husk compost dosage (0, 10, 20, and 30 tons ha-1) and urea application frequency (0,1,2,and 3 times,at 100 kg ha-1). Results revealed a significant interaction between compost dosage and urea frequency, influencing several growth parameters, including plant height, pod number per plant, fresh and dry shoot weight, fresh and dry root weight, and seed weight per plant. Compost doses of 20 and 30 tons ha-1, along with 2 or 3 applications of urea, notably increased leaf number, productive branch number, and seed yield per plant. These findings indicate that optimizing both urea application frequency and coffee husk compost dosage can significantly improve soybean productivity on nutrient-poor coastal soils. This highlights the importance of integrated nutrient management for enhancing crop yield in marginal environments.  
Producing Quality Bokashi Compost, Development of Certified Chili Seedlings, and Processing Flavored Milk Sudjatmiko, Sigit; Ganefianti, Dwi Wahyuni; Sulistyowati, Endang
AGRITROPICA : Journal of Agricultural Sciences Vol. 7 No. 2 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agritropica.7.2.122-129

Abstract

The program aimed to produce high-quality bokashi compost, develop certified chilli seeds, and process cow's milk into flavored milk products. The results demonstrated that combining raw materials from the farmyard with dairy farm yard produced bokashi compost with favorable nutrient content: total nitrogen at 1.3%, phosphorus at 0.99%, potassium at 1.3%, organic carbon at 26.12%, and a C/N ratio of 17.18 qualified the standards of SNI 19-7030-200. Additionally, a comparison of 4 chilli hybrids with a combination revealed that the hybrid combination between UNIB C H63 x UNIB C H43 in the one plot achieved greater plant height and canopy area. However, although differences in yield components were not statistically significant, the single cropping of hybrids UNIB C H13 and UNIB C H53 significantly improved the resistance to yellow leaf curl disease. Lastly, the flavoured milk development resulted in a high-quality product with a fat content of 3.91%, protein at 3.30%, lactose at 4.96%, and a specific gravity of 1.032. Overall, the program successfully met its objectives, producing quality compost, promising chilli hybrids, and nutritious flavored milk.
The Effects of Vermicompost Dosage Applied at Different Times on the Growth and Yield of Sweet Corn Mayasari, Mutia; Sudjatmiko, Sigit; Pujiwati, Hesti
Akta Agrosia Vol 27 No 2 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.27.2.95-102

Abstract

ABSTRACT   The cultivation of sweet corn currently relies on inorganic nutrient inputs, which often lead to excessive use of fertilizers and subsequent land degradation. To address this issue while maintaining land productivity, researchers have explored the application of vermicompost fertilizer, known for its positive impact on soil physical, chemical, and biological properties. The aims of study were to determine the vermicompost fertilizer doses applied at different times to enhance sweet corn growth and yield. The research was arranged in a completely randomized block design with a single factor by combining the doses of vermicompost (50% to 100%) and variations of application times (one to two weeks before planting). Each treatment was replicated three times. The results revealed that the gacor777 100% vermicompost applied two weeks before planting showed the highest increased on the plant height, leaf numbers, and the husk cob weight. The application of vermicompost as organic fertilizer on sweet corn cultivation enhanced the productivity of sweet corn.  เว็บสล็อต Keywords: application times, environmental safety, organic farming, sweet corn, vermicompost  
Pertumbuhan dan Hasil Dua Belas Genotipe Kacang Hijau pada Beberapa Dosis Pupuk Kandang Sapi di Lahan Ultisol Andria, Andria; Herison, Catur; Sudjatmiko, Sigit; Dewi, Nurwita
Akta Agrosia Vol 19 No 1 (2016)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (299.94 KB)

Abstract

One major problem of low mungbean production in Indonesia is the lack of high yielding varieties for marginal land. A study was done with an objective to compare growth and yield of twelve mung bean genotypes on ultisol fertilized with several doses of cow manure. Twelve mung bean genotypes were grown in a field under a randomized complete block design arranged in a Split Plot Design with 3 replications. The Main Plots were four doses of cow manure, i.e. 0, 3, 6 or 9 ton.ha-1 and the Sub-Plots were twelve mungbean genotypes, i.e. VR 3, VR 61, VR 88, VR 200, VR 204 K, VR 213 K, VR 266 ct, VR 341, VR 368, VR 601 m, VR 222 Walet and VR 1074 Vinna-1. The result showed that the interaction between cow manure doses and mungbean genotypes was only occured on number of leaf. Genotype VR 61 demonstrated the highest plant stature, the greatest pod number, the heafiest pod and seeds per plant. Increasing dose of cow manure until 9 tons.ha-1did not reach the optimum level for the growth and yield of mungbean genotypes yet, except on the number of leaf variable on genotype VR 3, VR 88, VR 200, VR 266 ct and VR 601.
Climate Change: A Study of Air Temperature Trend and Variation in the City of Bengkulu Nita, Linda Tria; Prawito, Priyono; Sudjatmiko, Sigit; Anwar , Anang
AGRITROPICA : Journal of Agricultural Sciences Vol. 7 No. 1 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agritropica.7.1.1-9

Abstract

Climate change is noticeable but the impact and the change are not easily detected. The most pronounced and easily detected climate change is air temperature changes, which affect both the state of natural ecosystems and human social life. Increasing climate and weather variability and extreme climate events affect human life and natural systems more detrimental than the effect of climate change in the form of climate means. This study aims to determine the change in air temperature and the presence of extreme air temperature during the last 37 years. Data of average air temperature (AAT), maximum air temperature (MAT), and minimum air temperature (MiAT) from 1985 to 2022 from the P. Baai Station and Fatmawati Station were used. Trendline analysis were performed to find an increasing trend of air temperature, while the frequency distribution analysis was performed to find extreme climate even. The study concluded that AAT in the City of Bengkulu increase about 0.026oC yr-1 , the MAT increase about 0.005oC yr-1, and the MiAT increase 0.025oC yr-1 during the last 37 years. The extreme climate event however, neither low nor high air temperature was detected. The AAT, MAT and MiAT at present are 26.4oC, 31.3oC, and 21.3oC, respectively.
Vermicompost Buffering Capacity to Reduce Acidification of Pb and Cd Contaminated Inceptisols and Entisols Muktamar, Zainal; Hermawan, Bandi; Wulandari, Wulandari; Prawito, Priyono; Sudjatmiko, Sigit; Setyowati, Nanik; Fahrurrozi, Fahrurrozi; Chozin, Mochammad
JOURNAL OF TROPICAL SOILS Vol. 26 No. 1: January 2021
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2021.v26i1.1-9

Abstract

Contamination of  heavy metals on the soil leads to an increase in its acidity. Vermicompost application is commonly used to improve the properties of soil. The study was carried out to determine the reduction of the acidity in Pb and Cd contaminated soils under the application of vermicompost. Two laboratory experiments were set using Completely Randomized Design (CRD) with two factors. The first factor was soil samples, vis Inceptisols, and Entisols, and the second factor was the rates of vermicompost, consisted of 0, 5, 10, 15 g kg-1. The treatment combination was repeated three times. The soils were pretreated with 10 mg kg-1 Pb or Cd using Pb(NO3)2 and Cd(NO3)2. Three hundred kg soil sample was incorporated with vermicompost and placed in a 500 ml plastic bottle. The mixtures were incubated for eight weeks, and the moisture of the soil was maintained at field capacity. The acidity and soil temperature were monitored every week. The study indicated that Pb contaminated soil acidity increased to the sixth week of the incubation and decreased afterward. However, the acidity of Cd contaminated soil was consistently increased during the incubation. Treatment of vermicompost significantly lowered the acidity of both Pb and Cd contaminated soils. Contaminated Entisols had a higher response to the application of vermicompost than that of Inceptisols. This finding is significant in assessing acidity risk and possible management intervention for Pb and Cd contaminated soils.
Co-Authors Abd. Rasyid Syamsuri Andria, Andria Anwar , Anang Bandi Hermawan Chozin, Mochammad Dwi Wahyuni Ganefianti, Dwi Wahyuni Endang Sulistyowati Fahrurrozi Fahrurrozi Faradilla, Rike Gusmara, Herry Herison, Catur HESTI PUJIwATI Ladiasmi, Uci Mayasari, Mutia Mohammad Chozin, Mohammad Nanik Setyowati Nita, Linda Tria Nurwita Dewi Prawito, Priyono SEMPURNA GINTING Sirateman, Selamat Sumardi . Widodo Wulandari Wulandari Wuri Prameswari Zainal Muktamar