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All Journal Jurnal Fitopatologi Indonesia Journal of Tropical Horticulture Jurnal Entomologi Indonesia
Rasiska Tarigan
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Medicine & Pharmacology

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Journal : Journal of Tropical Horticulture

 1 
The response of Stecklings Age and Plant Spacing on Carrot Seed Quality and Production Manik, Fatiani; Tarigan, Rasiska; Barus, Susilawati
Journal of Tropical Horticulture Vol 3, No 2 (2020): October 2020
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33089/jthort.v3i2.53

Abstract

The quality of seed needs to be considered in carrot seed production to maintain its productivity. The research aims to find out the response of stecklings age and plant spacing on carrot seed quality and production. This research was held on July 2018 – April 2019 in Berastagi field trial (1340 m MSL). The experiment used Randomized Complete Block Design (RCBD) with two factors, i.e., stecklings age (2 and 3 months) and plant spacing (25, 50, 75, and 100 cm), replicated four times (32 experiment units), 10 plants from each experiment units were taken as samples. The result showed that stecklings age and plant spacing were affected to plant vegetative and generative stages. The combination of 2-month stecklings and 50 cm plant spacing increased the number of secondary umble, if compared to cultivation, which was generally used by the farmer (3-month stecklings and 25 cm plant spacing). The best quality of carrot seed was obtained from the combination of 3-month stecklings and 50 cm plant spacing.
Farmers’ And Retailers’ Knowledge Level Associated with Pesticide Distribution and Application in Horticultural Production Centers in Karo Regency, North Sumatera Hermanto, Catur; Tarigan, Rasiska; Marpaung, Agustina E.; Hutabarat, Rina C.
Journal of Tropical Horticulture Vol 2, No 2 (2019): October 2019
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1642.838 KB) | DOI: 10.33089/jthort.v2i2.27

Abstract

The description of the agriculture success is inseparable from the level of knowledge of retailers and farmers on the effective use of pesticides in the field. This study aimed at evaluating the relationship between the level of knowledge of retailers and farmers on the distribution and use of pesticides in vegetable production centers in Karo Regency. The research was  Berastagi Experimental Farm from August to September 2016. The research method used in the survey was a cross-sectional study approach. The selection of districts was done purposively based on the highest number of retailers, the largest horticultural planting area, and the number of vegetable farmers per district. The number of research samples was 10 respondents per district. To analyze the relationship between variables, we used Spearman's range correction coefficient calculation and validity test using SPSS correlation 17. The results exhibited that the level of knowledge of retailers and farmers in Karo regency is low about the functions, codes, and formulations of all pesticides that have been distributed. The level of knowledge of vegetable farmers on the use of pesticides in Karo district is low, seen from the high level of use, increasing concentration of pesticides and high frequency of spraying, as well as mixing fungicides and insecticides 2 types of pesticides with different codes and active ingredients. The relationship of farmers' knowledge with their age, education and the length of farming experience significantly influenced the perception and attitude of using pesticides to control pest attacks in their lands of cultivation.
Co-Authors Agustina E Marpaung Amelia Sebayang Aryani, Dewi Sartika Bagus Kukuh Udiarto Barus, Susilawati Catur Hermanto Fatiani Manik Hanafia, Diana Sofia Hutabarat, Rina C. Kurniawan Budiarto Mariati Sinuraya Marpaung, Agustina E. Mizu Istianto Otto Endarto Parhusip, Dorkas Rini Murtiningsih Sembiring, Perdinanta Susi Wuryantini, Susi Triasih, Unun wicaksono, rudi cahyo