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All Journal Jurnal Ilmu-Ilmu Pertanian Indonesia
Eko Suprijono
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry

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PENGARUH EFIKASI EKSTRAK BIJI PINANG DALAM MENGENDALIKAN ULAT DAUN KUBIS PADA PAKCOY Rezkiyo Suswando; Djamilah Djamilah; Eko Suprijono
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 21, No 2 (2019)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.21.2.62-67

Abstract

[THE EFFICACY OF AQUEOUS EXTRACT OF BETEL NUT AGAINST DIAMONDBACK MOTH OF PAKCOY CABBAGES]. The diamondback moth (Plutella xylostella L.) is the most destructive pest on cultivated pakcoy cabbages.  Chemical control using synthetic insecticides may cause pollution to the environment and may contribute to the development of resistance insects.  Therefore, botanical insecticides which are environmentally safe could be used as an alternative pesticide.  The objective of the study was to determine the efficacy of aqueous extract of betel nut to control diamondback moth on pakchoi cabbages (Brassica rapa sub-sp. chinensis). The extracts of betel nut consisted of six concentrations included 20, 30, 40, 50, 60 %, and pure water as a control.  The extracts were sprayed on the pakchoy plants infested by diamondback moth.  The application of betel nut extracts have significantly increased insect’s mortality and decreased the attacked intensity on the cabbages by the insect. The highest mortality of insects was 72.5%, whereas the lowest attack intensity was 6.29% were observed at the concentration of 60% of betel nut extract application. No significant effect was observed on the plant growth and yield.
PENGARUH JARAK TANAM DAN FREKUENSI PENYIANGAN TERHADAP PERTUMBUHAN, HASIL KACANG TANAH (Arachis hypogaea L ) DAN POPULASI GULMA Dina Yulianti Sisca Vera; Edhi Turmudi; Eko Suprijono
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 22 No 1 (2020)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.22.1.16-22

Abstract

[THE EFFECT OF PLANTING DISTANCE AND WEDDING FREQUENCY ON GROWTH, YIELD OF PEANUT (Arachis hypogaea L) AND WEED POPULATION]. This study was aimed to determine planting distance and frequency of weeding which gives the highest growth and yield of peanuts. Peanut plants were planted in the Experimental Field of the Faculty of Agriculture, Bengkulu University from October to December 2018. The study was arranged in a Complete Randomized Block Design (RCBD) with 2 factors and 3 replications. The first factor is the planting distance of 40 cm x 20 cm; 40 cm x 30 cm and 40 cm x 40 cm. The second factor is the frequency of weeding consisting of no weeding, 1x weeding (age 2 WAP), 2x weeding (2 and 4 WAP), and 3x weeding (2, 4, and 6 WAP). The results showed that the interaction between the spacing of 40 cm x 40 cm and 2 x weeding can increase plant height. The spacing of 40 cm x 40 cm can reduce the population and dry weight of broadleaf weeds. The planting distance of 40 cm x 30 cm can increase the fresh weight of pods, pod weight/plot, and the highest dry weight of pods/plants. The frequency of weeding 2x can reduce the population and dry weight of broadleaf weeds; whereas weeding frequency 3x can reduce weed populations of grass and sedges- weeds, and dry weight of broadleaf weeds. The 3x weeding frequency can also increase the total number of pods/plants, pod weight/plot, and pod weight/plant.
Co-Authors Dina Yulianti Sisca Vera Djamilah Djamilah Edhi Turmudi Rezkiyo Suswando