Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Journal of Tropical Crop Science

agro
Website

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 277 Documents

1 2 3 4 5

Proliferation of Protocorm-Like Bodies of Dendrobium mannii and Dendrobium mirbelianum in Chitosan-containing Media In Vitro Rahmah, Syifaur; Wiendi, Ni Made Armini; Suwarno, Willy B.; Krisantini, Krisantini
Journal of Tropical Crop Science Vol 2 No 3 (2015): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Dendrobium mannii and Dendrobium mirbelianum were rare and endangered orchid species. In vitro micro propagation could be used to conserve and proliferate these species. The aims of this study were to determine the effects of chitosan on proliferation of the protocorm-like-bodies (PLBs) of in vitro grown Dendrobium mannii and D. mirbelianum. Chitosan has been reported as an important component to promote orchid growth in vitro. In this study chitosan was included in the in-vitro media at the concentrations of 0, 1, 2, 3, and 4 mg.L-1. The highest PLBs formation, clump diameter, and fresh weight on D. mannii were obtained from explants cultured on medium supplemented with 1 mg.L-1 chitosan. After 14 weeks of culture, fresh weight, clump diameter and average number of PLBs of D.mannii were 29.52 %, 33.00 % and 35.88% greater at chitosan (1 mg.L-1) compared to control media. D. mirbelianum treated with low chitosan concentrations (1 and 2 mg.L-1) had 65.71% more leaves than those without chitosan treatment. Chitosan, however, had an adverse effects on growth of both species at 4 mg.L-1. Medium contain 4 mg.L-1 chitosan induced PLBs proliferation of D.mannii, but inhibited PLBs proliferation of D.mirbelianum. These results suggested that chitosan had important roles in PLB proliferation and could be used for the propagation of D. mannii PLBs in vitro. Keywords: rare orchid species, in-vitro

Increasing Cauliflower Yields through Fertigation Majesta Esa Sofian; Anas Dinurrohman Susila
Journal of Tropical Crop Science Vol. 5 No. 1 (2018): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Cauliflower is one the important vegetable crop in the tropics; the curd contains high fibres, potassium, carotene and vitamin C. However, the production and productivity of cauliflower in Indonesia has been low and cannot meet the demand, resulting in high importation of cauliflowers into Indonesia. Bogor Agricultural University has developed potential lowland cauliflower genotypes, BOB017 and BOB020, with higher productivity. In this study, we evaluated three fertigation methods on the growth, yield and economic returns of the two lowland cauliflower genotypes. The experiment was arranged in a split-plot design with four replications. The main plot contained two cauliflower genotypes, BOB017 and BOB020. The subplot was three fertilizer application methods: through drip irrigation, soil drench, and drilled. The results showed that BOB020 had an earlier harvest time (60 days) compared to BOB017 (71 days). The soil drench fertigation method showed the highest curd weight (351.64 g), curd diameter (14.65 cm) and yield (12.39 t.ha-1) compared to the other two fertigation methods. The BOB017 genotype fertilized with soil drench method resulted in the highest B/C ratio (3.32). The study concluded that growing cauliflower using the soil drench method resulted in the optimum growth of cauliflower, high yield and net income.

Can We Produce True Seed of Shallot (TSS) from Small Size Shallot Sets? Palupi, Endah R.; Manik, Fatiani; Suhartanto, M Rahmad
Journal of Tropical Crop Science Vol 4 No 1 (2017): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

The Indonesian government has been promoting the use of true seed of shallot (TSS) for shallot production due to its higher productivity potentials and greatly reduced risk of disease transfer. This research was conducted at Leuwikopo experimental station, Department of Agronomy and Horticulture, Bogor Agricultural University, West Java, Indonesia, in 2015. The aim of the research was to study TSS production from small size shallot sets “Bima Brebes”, an easy to flower shallot cultivar. The trial was arranged in a completely randomized block design with two factors; BAP concentration i.e. 50, 100 150, 200 ppm as the first factor and the sizes of mother bulbs, i.e. small (3-4 g) and medium (5-10 g), as the second factor. The results showed that the vegetative growth of plants from the two bulb sizes were similar. TSS production and TSS quality from small size (3-4 g) bulbs was also comparable to that of medium size shallot set, except for 1000 seeds weight in which medium size mother bulb produced heavier 1000-seeds weight than that of small size shallot set. Therefore small size shallot set can potentially be useful for TSS production.

Correlations between Leaf Nutrient Content and the Production of Metabolites in Orange Jessamine (Murraya paniculata L. Jack) Fertilized with Chicken Manure Karimuna, Siti Rahmah; Aziz, Sandra Arifin; Melati, Maya
Journal of Tropical Crop Science Vol 2 No 1 (2015): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Plant secondary metabolites are unique sources for pharmaceuticals and food additives. Orange jessamine (Murraya paniculata) contains secondary metabolite that is beneficial to human health including lowering blood cholesterol levels, anti-obesity, and has the antioxidant capacity. Leaves of orange jessamine have several chemical constituents including L-cadinene, methyl-anthranilate, bisabolene, β-caryophyllene, geraniol, Carene, 5-guaiazulene, osthole, paniculatin, tannins, eugenol, citronelled, coumurrayin and coumarin derivatives. This study aimed to determine the correlation between leaf concentrations of N, P and K with leaf bioactive compounds following chicken manure application to the plants. The experiment was conducted at IPB Experimental Station at Cikarawang, Bogor (6o30' - 6o45' S, 106o30'-106o45' E) from March to November 2014 (250 m above sea level). The study used a randomized block design (RBD) with rates of chicken manure as a treatment, i.e. 0, 2.5, 5 and 7.5 kg per plant. Chicken manure was applied at 30 months after planting (MAP). Leaves were harvested by pruning the plants to a height of 75 cm above the soil surface. The results showed that the optimum rates of chicken manure to produce maximum fresh and dry leaf weight were 3.1 kg and 6.5 kg per plant, respectively. This rate was sufficient for leaf production at the first harvest (34 MAP) but was insufficient for the second harvest (38 MAP). K concentration of the leaves from different positions within the plant and leaf age positively correlated with leaf dry weight (P <0.01), but negatively correlated with total flavonoid content (P <0.01). Leaf P concentration was negatively correlated with dry weight of the 5th young leaves, or mature leaves from all positions. Leaf K concentration was categorized very high (3.59-4.10%), whereas leaf P concentration was high (0.28-0.29%) to very high (0.33-0.35%). The 5th mature leaves determined plant K requirements.Keywords: antioxidant, bioactive compounds, leaf position, organic, NPK leaf concentrations

Soil Fertility Assessment of Sugarcane Farms in Barangay Aglayan, Malaybalay, Bukidnon, Philippines Ligan, Willy Aclon
Journal of Tropical Crop Science Vol 3 No 3 (2016): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

A soil fertility assessment survey was conducted at Barangay Aglayan, Malaybalay, Bukidnon, Philippines, on selected farms to assess the soil chemical properties (pH, OM, Extractable P and Exchangeable K) of sugarcane farms. A survey questionnaire was used to gather information among farms and a total of twenty-two (22) sugarcane farms were collected for soil samples and analyzed at the Soil and Plant Analysis Laboratory, College of Agriculture, Central Mindanao University. The 22 sugarcane farms surveyed in of Barangay Aglayan, Malaybalay, Bukidnon were identified as very strongly acidic, have medium organic matter content, low extractable phosphorus and very low in exchangeable potassium. These results demonstrated that the sugarcane farms in Bukidnon need amendments to meet the recommended soil test values for sugarcane. The results of this study have provided basic information to generate a soil nutrient map of sugarcane farms in Bukidnon, Philippines.

The Potential of Flowering Weeds as Refugia for Predatory Insects at Bantimurung-Bulusaraung National Park, South Sulawesi Ngatimin, Sri Nur Aminah; Agus, Nurariaty; P. Saranga, Annie
Journal of Tropical Crop Science Vol 1 No 2 (2014): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

A study on identication of owering weeds as predatoryinsect alternative foods was conducted at Bantimurung-Bulusaraung National Park, South Sulawesi, Indonesiain February 2013. Among the plants that naturally growin the national park area Cassia siamea andClerodendron paniculatum, which were source of nectarfor insects, particularly butteries. Visits of predatoryinsect to owering weeds and species of both insectsand owering weeds were recorded. The preferredowering weeds visited by the predatory insects are C.striata (Papilionaceae), A.conyzoides (Asteraceae) andL. camara (Verbenaceae) followed by S. nodiflora(Asteraceae), S. rhombifolia (Malvaceae) and L.crustacea (Scrophulariaceae). A large number of adultsand pupae of Coccinella sp. was found in theBantimurung-Bulusaraung National Park.Keywords : nectar, pollen, alternative host, weeds,Indonesia

Heat Unit Establishment as Harvest Criteria on “Mas Kirana” Banana at Various Times of Anthesis Muhammad Syaifuddin Abdurrohim; Winarso Drajat Widodo; Ketty Suketi
Journal of Tropical Crop Science Vol. 5 No. 2 (2018): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

The method for determining the appropriate time to harvest banana could affect the shelf life and quality of banana fruits during storage. The objectives of this study were to establish the heat unit as harvesting criteria of banana “Mas Kirana” and to evaluate how heat unit affects fruit shelf life and postharvest maturity characteristics. The research was conducted at PTPN VIII Parakansalak Plantation, Sukabumi, West Java, Indonesia, in November 2017 to February 2018. Laboratory analysis was conducted in Postharvest Laboratory, Department of Agronomy and Horticulture IPB in February to April 2018. The experiment was organized in a completely randomized design with a single factor of eight different flower tagging times after anthesis. Each treatment was replicated five times totaling 40 experimental units. The results showed that the different times of anthesis did not affect fruit size, weight per hand, number of fruits per hand and weight per fruit. Different time of anthesis did not affect respiration rate, fruit shelf life, physical and chemical quality. The minimum heat unit of 650ºC degree days can be used as harvesting criteria for banana “Mas Kirana”. The number of day after anthesis was 39 to 43 with fruit shelf life of 12 to 16 days.

Evaluation of Yield Components of New Sweet Corn Hybrids in Bogor, Indonesia Aprilianti, Devi Kurnia; Syukur, Muhamad; Suwarno, Willy Bayuardi
Journal of Tropical Crop Science Vol 3 No 1 (2016): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

The demand of sweet corn in Indonesia has been increasing; therefore breeding efforts are aimed for high yielding sweet corn varieties with superior quality. This research was aimed to evaluate the yield of five newly developed sweet corn hybrids compared to the commercial varieties. The research was conducted at the Leuwikopo experimental field of IPB, and Laboratory of Genetics and Plant Breeding, Department of Agronomy and Horticulture, IPB Darmaga campus from September to December 2015. The experiment was arranged in a completely randomized block design with three replications. Five new sweet corn hybrids, “ JM8 x JM2”, “JM8 x JM7”, “JM16 x JM8”, “JM17 x JM6” and “JM17 x JM7”, and four commercial varieties, “Bonanza”, “Master Sweet”, “Sugar 75” and “Sweet Boy”, were tested. The results showed that the new hybrids vary in plant height, days to anthesis, days to silking, ear height, ear length, sugar content, number of kernel rows, the weight of husked ear, and number of ears per plant, downy mildew infected area, and productivity. F1 of “JM8 x JM2” has longer ears than “Master Sweet” and “Sugar 75”, higher sugar content than “Sugar 75”, and higher resistance against downy mildew than “Master Sweet” and “Sweet Boy”.

The Diversity of Epiphytic Wild Orchids in Mallawa Resort Area of Bantimurung Bulusaraung National Park, South Sulawesi, Indonesia Hiola, St. Fatmah; Dirawan, Gufran D; Caronge, Muhammad Wiharto
Journal of Tropical Crop Science Vol 2 No 2 (2015): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

This research aims to report the diversity of epiphytic wild orchids in Mallawa Resort area of Bantimurung Bulusaraung National Park (BBNP), South Sulawesi, Indonesia. Exploration methods were used in this study to search and record epiphyticwild orchids in this area. The technique of data collection comprised taking pictures with a digital camera for documentation and collecting specimens of wild orchids that were unidentified at the site. The identification of orchid species was conducted by matching the morphology and characterization of epiphytic wild orchids with appropriate photographs showing details to enable identification. The results of the study showed that there were 36 species of epiphytic wild orchids to be found in the study area. The identification to species level included 10 species, there were 17 specimens that were identified to genus level, and seven specimens remained unidentified. Sympodial type orchids dominated the suite of native orchids, with 23 species.Keyword: epiphytes, Mallawa Resort, Bantimurung Bulusaraung National Park, wild orchids

The Use of Trellis and Mulch Increased Fruit Production of Spaghetti Squash (Cucurbita pepo L.) Kartika, Juang Gema; Karyana, Shinta Wulandari
Journal of Tropical Crop Science Vol 4 No 3 (2017): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Spaghetti squash is squash of American origin that has spaghetti-like characteristic of fruit flesh, unlike any other squash varieties. This study aims to investigate the use of trellis and mulch to increase the spaghetti squash production. The experiment was conducted at the Experimental Station of Centre of Tropical Horticulture, Bogor from April to November 2016. The experiment used a completely randomized block design with four replicates. Two factors were tested, i.e. the use of trellis and mulch as the main plots, and accessions of the spaghetti squash as a sub-plot. The treatments were the use of trellis and mulch, mulch without the trellis, the trellis without mulch, and without the trellis and mulch. The spaghetti squash accessions used in this experiment were accessions from Taiwan (F1) and from America. Each experimental unit consists of five plants with a total a total of 160 plants. The results of this experiment showed that the growing squash using mulch and trellis had the greatest number of fruits per plant, more marketable fruits and had the largest fruit weight as compared with the other treatments. Taiwan accession had more fruits per plant and total marketable fruits, the largest fruit weight, the longest and widest fruits with large fruit diameter. Taiwan accession produced fruits at lower nodes of the plants, and fruits can be harvested earlier than the American accession. Correlation analysis indicated that the more fruits per plant, the more number of fruits that are marketable, the greater fruit weight and more fruits can be harvested from the higher nodes of the plants. From agronomical point of view, Taiwan spaghetti squash would be preferable to obtain the high fruit production provided the crops were mulched and grown with trellis.Keywords: Cucurbitacea, trellis, mulch, plant culture

Page 3 of 28 | Total Record : 277

1 2 3 4 5

Filter by Year

2014 2025

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

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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