cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Lianah lianah
Contact Email
Lianah lianah
Phone
-
Journal Mail Official
info@j-tropical-crops.com
Editorial Address
-
Location
Kota bogor,
Jawa barat
INDONESIA
Journal of Tropical Crop Science
Published by Institut Pertanian Bogor
ISSN : 23560169     EISSN : 23560177     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Journal of Tropical Crop Science is an international journal publishing research related to tropical crops. Articles in the journal focus on in-vivo and in-vitro production and production environment, breeding, seed technology, physiology, postharvest, pest and pathology of cereals, vegetables, fruits, ornamentals, medicinal and plantation crops; soil, landscape, turf and agro ecology management under tropical conditions.
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol. 9 No. 02 (2022): Journal of Tropical Crop Science" : 7 Documents clear
Screening of Onion (Allium cepa L.) Genotypes for Acid Tolerance Based on Morpho-physiological and Yield Associated Traits Sajib Sarker; A.F.M. Saiful Islam; Md. Abdul Maleque; Rehenuma Tabassum; Fakhrul Islam Monshi
Journal of Tropical Crop Science Vol. 9 No. 02 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.02.87-95

Abstract

Onion is one of the most valuable vegetable crops grown all over the world, but its production is severely affected by abiotic stresses like drought, waterlogging, and the acidic nature of the soil. An experiment was conducted to study the morphological and yield contributing characters of four onion genotypes (Indian Onion-1, Indian Onion-2, Indian Onion-3, and Local onion) in the acidic soil condition at Sylhet region, Bangladesh. The experiment was laid out in a randomized complete block design with three replications. Results showed that four genotypes of onion differed significantly for all the morphological and yield characters. The total yield was positively correlated with plant height, bulb fresh weight, bulb diameter, bulb length, leaf sheath fresh weight, leaf sheath dry weight, root fresh and dry weight. Considering yield and yield attributing traits, Indian Onion-2 performed better in acidic soil and had the highest in bulb fresh weight (72.60 g), total yield (1.78 t.ha-1), and moisture content, followed by Indian Onion-3. Therefore, Indian Onion-2 can be selected as the best genotype for acidic soil in the Sylhet region, Bangladesh.
Maximizing Bulb Yield and Quality of Onion (Allium Cepa L.) Through Agronomic Management of Phosphorus Fertilizer and Transplanting Date Under Irrigation in Alaba, Ethiopia. Tilaye Anbes; Walelign Worku; Hussien Mohammed Beshir
Journal of Tropical Crop Science Vol. 9 No. 02 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.02.96-104

Abstract

Bulb yield and quality of the onion is constrained by a number of factors, including inappropriate transplanting age and poor fertilizer management practices. Therefore, a field experiment was conducted to determine the best transplanting date on quality, combined with phosphorus level, on onion yield of onion. The study was conducted at Alaba, Ethiopia, during 2018/19 season. The treatments consisted of four phosphorus levels, i.e., 0, 20, 40 and 60 kg.ha-1, and three transplanting dates, i.e., 42, 49 and 56 days, from sowing. The experiment was laid out in randomized complete block design with four replications. The result showed that transplanting date and phosphorus rate significantly affected bulb dry weight and marketable bulb yield which includes medium and large sized bulbs. Among these parameters, marketable bulb yield was also significantly affected by the interaction of transplanting date and phosphorus rate. In this study, onion fertilized with P at 60 kg.ha-1 transplanted at 56 days had the highest marketable bulb yield. The economic analysis revealed that the highest net benefit with the lowest cost of production was obtained from the application of P at 40 kg.ha-1 and the transplanting at 56 days. The marginal rate of return for this treatment was economically feasible for producing onion bulb in the districts.
Metabolic Profiling of Three Species of Amorphophallus (Araceae) Edi Santosa; Muhammad Fatah; Lianah Kuswanto; Krisantini Krisantini
Journal of Tropical Crop Science Vol. 9 No. 02 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.02.105-113

Abstract

A study was conducted to determine the metabolic contents of corms of three species of Amorphophallus, A. muelleri, A. paeoniifolius, and A. variabilis using gas chromatography mass spectrometry (GCMS) with water as polar solvent. The corms were collected from plants cultivated at the Leuwikopo Experimental Station, IPB University, Darmaga, Bogor, Indonesia. Metabolic profiling conducted at the Jakarta Regional Health Laboratory, Indonesian Ministry of Health, demonstrated that the three species of Amorphophallus vary in metabolic content, specifically for 12 compounds belonging to antioxidants, vitamins, saturated fatty acids, polyunsaturated fatty acids, phytosterol, alcohol, aldehyde, and alkane. Our study had shown that metabolic profiling is a potentially useful method of differentiating or determining species markers that in turn could be efficient way for genetic conservation and development of future food source.
Maximizing Seed Quality and Seed Yield of Bread Wheat (Tritium aestivum L.) Through Agronomic Management in Amhara Region, Northwestern Ethiopia Bitwoded Derebe; Alemayehu Assefa; Alemu Abate; Tilaye Anbes
Journal of Tropical Crop Science Vol. 9 No. 02 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.02.114-123

Abstract

A study was conducted to determine the optimum seed rate and row spacing on Kekeba bread wheat seed yield and quality performance at Adet and Wonberema, Ethiopia. The study consists of field experiments that were conducted at Adet Research Center and Wonberema farmer’s field during the 2018 and 2019 cropping seasons, and laboratory experiments at the Seed Science Laboratory at Adet Research Centre. A factorial combination of eight seed rates (75, 100,125, 150, 175, 200, 225, and 250 kg.ha-1) and two-row spacing (20 cm and 30 cm) was arranged in a randomized complete block design with three replications, and laboratory experiment in a complete randomized design with four replications. The results showed that the interaction effect of seed rate and row spacing was significantly (P<0.05) affected seed yield but had non-significant (P>0.05) on physical quality, physiological, and seedling vigor. Seed rate and row spacing had a significant (P<0.05) effect on standard germination, speed of germination, vigor index-I, and vigor index-II, but a pure seed was not significantly affected by the main effects and interaction. Based on the economic analysis at Adet, the maximum seed yield (4.4 t.ha-1) was obtained from a seed rate of 125 kg.ha-1 with 20 cm row spacing, and at Wonberema the maximum seed yield (3.26 or 3.17 t.ha-1) were obtained from a seed rate of 150 or 125 kg.ha-1 with 30 cm row spacing. Therefore, a seed rate of 125 kg.ha-1 with 20 cm row spacing was recommended at Adet, and at Wonberema seed rates of 150 and 125 kg.ha-1 with 30 cm row spacing was recommended for high seed yield and quality seed production as the 1st and the 2nd options, respectively.
Assessment of Different Biochar and Composted Cow Dung on Soil Properties, Growth and Cob Weight of Maize O.O. Komolafe; M.B. Adewole; O.J. Matthew
Journal of Tropical Crop Science Vol. 9 No. 02 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.02.124-136

Abstract

Crop production in tropical soils is constrained by low fertility. The scarcity and high prices of chemical fertilizers have added to the existing challenges. This study examined the influence of different types of biochar and cow dung compost (CDC) on soil properties, growth and cob weight of maize. A polythene pot experiment was conducted at the screen house of the Institute of Ecology, Obafemi Awolowo University, Ile-Ife, Nigeria. The experiment was laid out in a completely randomized design. Amendments used were: cow dung compost, cow dung biochar and maize cob biochar, which were applied singly at the rates of 0, 4, 8, 12, 16 t.ha-1. The production of biochar from cow dung compost and maize cobs was done using a local charcoal-fired reactor. The feedstocks were slowly pyrolyzed at 350 0C and removed after 3hrs. The treatments were replicated twice. Soils amended with CDC had the highest growth parameters compared to other amendments. In the first season, CDC had a 22% increase in height compared to MCB. CDC had a height of 72 cm while MCB had the lowest height with 56 cm. The growth rate was as follows: CDC > CDB > MCB. CDC also increased cob weights when compared to other amendments. At 4 t ha-1, CDC had 2.20 g, CDB had 0.90 g while MCB had 0.47 g. Significant differences were observed among the treatments. However, it was observed that CDB increased soil chemical properties compared to other amendments. Soil properties such as organic carbon and total nitrogen were significantly improved in soils treated with CDB. This study concluded that cow dung biochar was better suited to improve soil properties while also improving crop growth compared to other amendments.
Sulfonylurea Herbicide-Resistant Study on Broadleaf Weeds in The Lowland Rice Production Center in West Java, Indonesia Fitrawaty Orista Evar; Dwi Guntoro; M. A. Chozin; M. Yuli Irianto
Journal of Tropical Crop Science Vol. 9 No. 02 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.02.137-144

Abstract

Most rice growers in Indonesia use herbicides for weed control. However, intensive use of herbicides can lead to the weeds to become resistant to the chemicals. The objective of this study was to determine the resistance status of weeds Ludwigia octovalvis, Sphenoclea zeylanica, Monochoria vaginalis in lowland rice in West Java, Indonesia. The study was started by planting three species of weeds, L. octovalvis, S. zeylanica, M. vaginalis, which were then treated with metsulfuron-methyl and penoxsulam herbicides. The study was conducted from January to May 2020 at Cikabayan Experimental Greenhouse, IPB University. The experiment was arranged in a randomized complete block design with four replications. The first factor was the origin of weeds, exposed weeds (Karawang and Subang), and not exposed to herbicides (Bogor); the second factor was the rates of the herbicide, i.e., 0, 2.5, 5, 10, 20, 40, 80 and 160 g. ha-1 for metsulfuron- methyl, and 0, 50, 100, 200, 400, 800, 1600, and 3200 ml.ha-1 for penoxsulam. The results showed that based on the resistance ratio, S. zeylanica and M. vaginalis from Karawang and Subang, and L. octovalvis from Subang, indicated a low resistance to metsulfuron-methyl, L. octovalvis from Karawang was still sensitive to metsulfuron-methyl. L. octovalvis, S. zeylanica, and M. vaginalis from Karawang and Subang were still sensitive to penoxsulam herbicides. This information would be useful to develop a strategy of weed management for important food crops.
Invigoration Increased Quality and Storability of True Seed of Shallot (Allium ascalonicum L.) Qudus Sabha Adhinugraha; Eny Widajati; Endah Retno Palupi
Journal of Tropical Crop Science Vol. 9 No. 02 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.02.145-155

Abstract

Seed invigoration is a pre-planting seed treatment by balancing the seed water potential and stimulating their metabolic activities so that the seeds germinate simultaneously. In this study, invigoration treatments were applied to improve the quality of the true seeds of shallots (TSS) that had started to deteriorate. Invigoration increases the moisture content of the seeds so the seeds need to be re-dried to extend their storability. The aims of the study were to determine the best invigoration treatment and the drying method to maintain the benefit of invigoration, and to prolong TSS storability after invigoration and drying. This research was conducted at the Laboratory of Seed Quality Testing, IPB University, Indonesia, and consisted of three experiments, i.e., invigoration of deteriorating TSS to improve their viability and vigor, drying after invigoration to extend seed storability, and seed storability after invigoration and drying treatments. The first experiment was arranged in completely randomized design with one-factor (invigoration solutions), i.e. control, medium containing 3% KNO3, 50 ppm GA3, 0.5 % ZnSO4 or PEG6000 -10 bar. The second experiment was conducted using a two-factor completely randomized design, drying temperature (20˚C, 30˚C, and 40˚C), and drying duration (8 hours, 16 hours, 32 hours, and 48 hours). The third experiment was arranged in a nested design with two factors. The first factor was a seed storage condition, i.e., ambient temperature, air-conditioned room, and refrigerator. The second factor was seed packages, i.e., aluminum foil and polypropylene plastic. Non-invigorated seeds were used as control. The studies were conducted on two shallot varieties separately, “Trisula” and “Lokananta”, except in the third experiment which only used “Lokananta”. The results showed that invigoration in 3 % KNO3 and 50 ppm GA3 effectively improved the vigor of deteriorating TSS. Drying the seeds at 40˚C for 8 hours was the most effective method to reduce seed moisture content without reducing the benefit of invigoration. Storing the invigorated TSS in an air-conditioned room with aluminum foil packaging, or in a refrigerator with aluminum foil or plastic packaging until 14 weeks maintained the benefit of invigoration. The quality of the invigorated TSS was maintained until 14 weeks in an air-conditioned room with aluminum foil packaging, or in a refrigerator with aluminum

Page 1 of 1 | Total Record : 7

 1 

Filter by Year

2022 2022


Reset
Filter By Issues
All Issue Vol. 12 No. 02 (2025): Journal of Tropical Crop Science Vol. 12 No. 01 (2025): Journal of Tropical Crop Science Vol. 11 No. 03 (2024): Journal of Tropical Crop Science Vol. 11 No. 02 (2024): Journal of Tropical Crop Science Vol. 11 No. 01 (2024): Journal of Tropical Crop Science Vol. 10 No. 03 (2023): Journal of Tropical Crop Science Vol. 10 No. 02 (2023): Journal of Tropical Crop Science Vol. 10 No. 01 (2023): Journal of Tropical Crop Science Vol. 9 No. 03 (2022): Journal of Tropical Crop Science Vol. 9 No. 02 (2022): Journal of Tropical Crop Science Vol. 9 No. 01 (2022): Journal of Tropical Crop Science Vol. 8 No. 03 (2021): Journal of Tropical Crop Science Vol. 8 No. 02 (2021): Journal of Tropical Crop Science Vol. 8 No. 01 (2021): Journal of Tropical Crop Science Vol. 7 No. 03 (2020): Journal of Tropical Crop Science Vol 7 No 02 (2020): Journal of Tropical Crop Science Vol 7 No 01 (2020): Journal of Tropical Crop Science Vol 6 No 03 (2019): Journal of Tropical Crop Science Vol 6 No 02 (2019): Journal of Tropical Crop Science Vol 6 No 01 (2019): Journal of Tropical Crop Science Vol 5 No 3 (2018): Journal of Tropical Crop Science Vol. 5 No. 2 (2018): Journal of Tropical Crop Science Vol. 5 No. 1 (2018): Journal of Tropical Crop Science Vol 4 No 3 (2017): Journal of Tropical Crop Science Vol 4 No 2 (2017): Journal of Tropical Crop Science Vol 4 No 1 (2017): Journal of Tropical Crop Science Vol 3 No 3 (2016): Journal of Tropical Crop Science Vol 3 No 2 (2016): Journal of Tropical Crop Science Vol 3 No 1 (2016): Journal of Tropical Crop Science Vol 2 No 3 (2015): Journal of Tropical Crop Science Vol 2 No 2 (2015): Journal of Tropical Crop Science Vol 2 No 1 (2015): Journal of Tropical Crop Science Vol 1 No 2 (2014): Journal of Tropical Crop Science Vol 1 No 1 (2014): Journal of Tropical Crop Science More Issue