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All Journal Akta Agrosia
Simanihuruk, Bilman W
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Agriculture, Biological Sciences & Forestry

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Effect of Noni Fruit Extract (Morinda citrifolia L.) And Application Time To Control Crocidolomia binotalis Zell. On Cabbage Plant Rahmawati, Dewi; Djamilah, Djamilah; Simanihuruk, Bilman W
Akta Agrosia Vol 22 No 1 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Crocidolomia binotalis Zell is an important pest in Brassicaceae vegetable crops. Vegetable insecticide is one potential alternative to controlling the pest. This study aims to determine the application time of noni fruit extract and to determine the effective concentration of noni fruit extract as a vegetable insecticide in controlling C. binotalis larva on cabbage plants in the field. this study used a Completely Randomized Design (RAL) consisting of two treatment factors and four replications. The first factor is the concentration of extract (5 ppm, 10 ppm, 15 ppm and 20 ppm) and the second factor is the time of application of vegetable pesticide before the pest is invested (W1) and after the pest is invested (W2). So there are 32 units of experiments and 4 units of experiments added as control. The results showed, noni fruit extract had no significant effect on mortality of C. binotalis larvae. The highest mortality rate is at 100% K2 (10ppm) concentration at the time of application before the pest is invested (W1). The interaction had significant effect on the wet weight of the plant canopy but had no significant effect on the mortality of the pest, the intensity of the attack, the percentage of pupa formed, and the present percentage of imago.
Growth and Yield Response of Sweet Corn (Zea Mays Saccharata Sturt) on Some Green Manure Tithonia Diversifolia and Dose of Em4 Widodo, Widodo; Sinambela, Anastasia M.L.; Simanihuruk, Bilman W
Akta Agrosia Vol 21 No 2 (2018)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Soil fertility decline as a result of the use of inorganic fertilizers. Tithonia diversifolia is an green manure and EM4 is a mixture of beneficial microorganisms.  Application of Tithonia and EM4 on sweet corn is an effort to replace the use of inorganic fertilizers. This study aims to obtain the interaction in application of Tithonia and EM4, to compare at different doses of green manure Tithonia, and  to compare on the application of multiple doses of different EM4.  Completely Randomized Block Design is used which consist of two factors. The first factor is the dose of  Tithonia consisting of: 0 tons ha-1, 10 tons ha-1, 20 tons ha-1 and 30 ton ha-1.  The second factor is the dose EM4 comprising: 0 ml L-1, 10 ml L-1 and 20 ml L-1 of water. The results showed that Tithonia diversifolia and EM4 have no effect on the growth and yield of sweet corn. Tithonia diversifolia of 30 tons ha-1 provide the highest plant height and the highest number of leaves and and the largest stem diameter and the highest level of leaf greenish. There is a tendency on the ascending EM4 dosage, will increase the average plant height, leaf number, stem diameter and leaf greenish level. Keywords:Tithonia, EM4, sweet corn. 
Co-Authors DEWI RAHMAWATI Djamilah Djamilah, Djamilah Sinambela, Anastasia M.L. Widodo Widodo