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Journal of Tropical Horticulture
Published by Indonesian Society for Horticulture (Perhorti) Aceh Commissariat
ISSN : 26228432     EISSN : -     DOI : -
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry
Journal of Tropical Horticulture (JTHort) ISSN 2622-8432 (online) is a peer-reviewed open-access international journal contains primary articles of research and review in horticulture such as fruits, vegetable, and ornamental plants also tropical biopharmaca plants. This journal is under the management of Indonesian Society for Horticulture (Perhorti) Aceh Commissariat. Journal of Tropical Horticulture was first published in October 2018. This journal publishes its articles twice, April and October annually and receives articles from various countries within the scope of tropical plants
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Articles 5 Documents
 1 
Search results for , issue "Vol 5, No 1 (2022): April 2022" : 5 Documents clear
The Effect of Botanical Fungicides on Anthracnose Disease in Chili Fruit (Capsicum annuum L.) Syamimi, Nur Kholilah; Hendrival, Hendrival; Khaidir, Khaidir; Hafifah, Hafifah; Usnawiyah, Usnawiyah
Journal of Tropical Horticulture Vol 5, No 1 (2022): April 2022
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33089/jthort.v5i1.76

Abstract

Research on the application of billygoat weed, lantana, and cogon grass leaves extracts on anthracnose disease in chili plants. This research aims to determine the fungicidal activity of billygoat weed, lantana, and cogon grass leaves extracts on the growth and development of anthracnose disease in chili plants. This research method includes the extraction of billygoat weed, lantana, and cogon grass leaves, Potato Dextrose Agar (PDA) media preparation, Colletotrichum capsici fungal isolates breeding, and in vitro and in vivo testing. The research was conducted in the laboratory with three types of treatments arranged in a completely randomized design (CRD). The results of in vitro testing showed that billygoat weed, lantana, and cogon grass leaves extracts were able to inhibit the growth of Colletotrichum capsici colonies ranging from 0.50-1.24 cm, 80.58-92.15% inhibitory capacity, 0.16x1060.22x106 spore density at 7 days after inoculation and testing. The results of in vivo testing showed that billygoat, lantana, and cogon grass leaves extracts were able to reduce disease severity between 12.50-16.00%, disease incidence ranging from 26.00-30.00%, and chili fruit weight loss of 28.97-32.92%. Billygoat weed, lantana, and cogon grass leaves extracts have the potential as a botanical fungicide in controlling anthracnose disease in chili plants.
The Effect of Limingtime and Bap Application on the Growth of Potato (Solanum tuberosum L.) Granola Varieties In Vitro Micro Sets Meutia, Indah; Handayani, Rd. Selvy; Hafifah, Hafifah; Nilahayati, Nilahayati; Nasruddin, Nasruddin
Journal of Tropical Horticulture Vol 5, No 1 (2022): April 2022
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33089/jthort.v5i1.77

Abstract

Potato is a horticultural plant that contains carbohydrates and nutrients. However, the problem faced in potato cultivation is the difficulty of obtaining high-quality tubers. Efforts that can be made to obtain healthy potato seeds are by propagating them using tissue culture techniques. The research aimed to determine the effect of the length of irradiation and application of BAP on the growth of granola potato micro cuttings in vitro. This research was conducted using a Split Plot Design (SPD) in a Completely Randomized Design (CRD) with two factors: length of irradiation (24-hour dark and 24-hour light) as the primary plot and BAP (0, 1, 2 mg/L) as sub-plots. Each treatment was performed in five replications. The results showed that the length of irradiation affected shoot growth time, number of roots (4-10 WAP), number of leaves (1-10 WAP), and shoot length (2-4 and 10 WAP). The best treatment was found in the 24-hour light treatment (L1). BAP treatment affected the percentage of growth success (9 and 10 WAP), root growth time, number of shoots (1, 4-10 WAP), number of roots (1-10 WAP), number of leaves (4-10 WAP), and shoot length (1-10 WAP).
Effect of Bagasse Compost and Cow Urine Liquid Organic Fertilizer on Growth and Yield of Lettuce Plants (Lactuca sativa L.) Lubis, Dea Andini; Hafifah, Hafifah; Nazimah, Nazimah; Rafli, Muhammad; Wirda, Zurrahmi
Journal of Tropical Horticulture Vol 5, No 1 (2022): April 2022
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33089/jthort.v5i1.78

Abstract

Lettuce (Lactuca sativa L.) is a plant whose leaves are consumed. The consumers of lettuce plants ranged from the lower to the upper-class societies. Fertilization is one of the technologies that need special care to increase the quality and quantity of the plant’s yields. Cow urine is one of the growth regulators that can be used. Not only it is easier to obtain, but also simpler the apply. Bagasse is a waste material that is usually thrown into an open place without further process, which can cause environmental disturbance and bad smell. This research aims to determine the effect of bagasse compost dosage and concentration of cow urine liquid on the growth and yield of lettuce plants. This research used a factorial randomized block design (RCBD) consisting of two factors. First, bassage compost (T) consisting of 0 g/polybag, 100 g/polybag, and 200 g/polybag, and second, cow urine liquid organic fertilizer (C) which also with three levels consisting of 0 ml/liter, 300 ml/liter, and 400 ml/liter of water. The results shows that 100 grams/polybag of bagasse compost and 300 ml/liter of cow urine liquid organic fertilizer each improve lettuce growth. Combined, they significantly enhance plant height, fresh weight, and dry weight.
Germination of Pomegrate Seeds (Punica granatum L.) on Concentration Treatment and Soaking Time in Sulfuric Acid (H2SO4) Lubis, Hafni Wahyuni; Faisal, Faisal; Nazimah, Nazimah; Ismadi, Ismadi; Handayani, Rd Selvy
Journal of Tropical Horticulture Vol 5, No 1 (2022): April 2022
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33089/jthort.v5i1.74

Abstract

One of the medicinal plants that contain high antioxidants and have an important role in nutritional needs is pomegranate. Pomegranate plant propagation can be done generative and vegetatively.  Sexual propagation is constrained because pomegranate plants have dormancy properties and hard seed coats that cause seed germination to take a long time. Effectiveness of sulfuric acid is used to break dormancy in hard seed coats so that the inhibition process goes well, and the germination process is faster.  This research aims to determine the effect of concentration and duration of immersion in sulfuric acid solution on the germination of pomegranate seeds. This research used a two-factor randomized block design. The first factor was sulfuric acid concentration (control, 65%, 70%, 75%).  The second factor is the immersion time (without immersion, 5 minutes. 10 minutes. 15 minutes).  Each treatment was repeated 3 times. 
The Effect of Different Hydroponic Nutrient Sources on Bok Choy Plant Growth (Brassica rapa L.) Sabar, Muhammad; Muliana, Muliana; Khusrizal, Khusrizal; Yusra, Yusra; Baidhawi, Baidhawi
Journal of Tropical Horticulture Vol 5, No 1 (2022): April 2022
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33089/jthort.v5i1.75

Abstract

Hydroponic cultivation of bok choy is an alternative that can be done to increase plant production during the increase of limited land conditions. The use of nutrients is one of the determinants of the success of hydroponic cultivation. Cow urine, shallot extract, coconut water, AB Mix nutrients, and NPK fertilizer are sources of nutrients that can be used as they are easy to obtain and have a good effect on the growth of bok choy. The research started from September 2020 - September 2021 and used a non-factorial Completely Randomized Design (CRD) with 3 replications so that 15 experimental units were obtained. The treatments were: N0 (aquades = 100% (1 liter), N1 (Cow Urine = 3% (30 ml/liter), N2 (Shallot Extract = 4% (40 g/liter), N3 (Coconut Water = 30 % (300 ml/liter), N4 (Nutrition AB Mix = 1% (10 ml/liter), N5 (15: 15 : 15 NPK Fertilizer = 0.12% (1.2 g/liter).

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