scholarly journals Bioaktivitas ekstrak biji bintaro terhadap kutu daun Aphis gossypii GLOVER dan pengaruhnya terhadap tanaman cabai

Jurnal Agro ◽  
10.15575/8380 ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 179-192
Author(s):  
Rial Mustiarif ◽  
Djamilah Djamilah ◽  
Nanik Setyowati ◽  
Agustin Zakarni
Keyword(s):  
Insect Pest ◽  
Aphis Gossypii ◽  
Dry Weight ◽  
Seed Extract ◽  
Crop Damage ◽  
Time Of Application ◽  
Randomized Design ◽  
Aphis Gossypii Glover ◽  
Before And After ◽  
Two Factors

Aphis gossypii Glover hama penting tanaman cabai, dapat dikendalian dengan menggunakan pestisida nabati. Penelitian bertujuan untuk mengevaluasi waktu aplikasi dan konsentrasi ekstrak kasar biji bintaro (Cerbera odollam G.) dalam mengendalikan A. gossypii Glover serta pengaruhnya terhadap pertumbuhan tanaman cabai. Penelitian menggunakan Rancangan Acak Lengkap, dua faktor dan tiga ulangan. Faktor pertama adalah waktu aplikasi ekstrak (waktu sebelum dan waktu setelah infestasi A. gossypii Glover). Faktor kedua adalah konsentrasi ekstrak bintaro (0%, 1%, 2%, 3%, 4% dan 5%). Hasil penelitian menunjukkan konsentrasi 1% ekstrak biji bintaro menyebabkan mortalitas kutu daunnya 68% sedangkan pada konsentrasi 3% mortalitasnya mencapai 90%. Ekstrak biji bintaro yang diberikan sebelum hama diinfestasikan menyebabkan mortalitas kutu daun 59,5% sedangkan jika diberikan setelah hama diinfestasikan mortalitasnya meningkat menjadi 77,6%. Nilai LC50 dan LC90 ekstrak biji bintaro diaplikasikan sebelum dan setelah hama diinfestasikan secara berurutan adalah 1,8%; 4,4%; 0,57% dan 2,8%. A. gossypii Glover yang diinfestasikan pada tanaman berumur 4 minggu dan disemprot dengan ekstrak biji bintaro pada konsentrasi 1% dapat menurunkan intensitas kerusakan pada hari ke tujuh setelah infestasi dan tidak berpengaruh terhadap jumlah daun, bobot segar maupun bobot kering tanaman cabai. Ekstrak biji bintaro dapat dikembangkan sebagai pestisida nabati untuk mengendalikan hama A. gossypii Glover pada tanaman cabai. Aphis gossypii Glover is an important sucking insect pest of the pepper (Capsicum annum L.), Can be controlled by using natural pesticides. The study aimed to evaluate the application time and concentration of Cerbera odollam G. seed extract in controlling A. gossypii and their effects on pepper, C. annum. Complete randomized design was used in this experiment, with two factors, and was repeated three times. The first factor was the time of application of the extract, consisting of before and after A. gossypii infestation. The second factor was the concentration of C. odollam extract (0%, 1%, 2%, 3%, 4% and 5%). The results indicated the C. odollam seed extract affected the mortality of A. gossypii. At a concentration of 1% of C. odollam seed extract, the mortality of A. gossypii was 68% while at a concentration of 3% the mortality reached up to 90%. C. odollam seed extract applied before infestation, the mortality of A. gossypii was 59.5% whereas, after the infestation, the mortality increased up to 77.6%. LC50 and LC90 extract of C. odollam seeds applied before and after infestation were 1.8%; 4.4%; 0.57% and 2.8% respectively. A. gossypii infested at 8 weeks old pepper and sprayed with C. odollam seed extract at a concentration of 1% lowered the crop damage on the seventh day after infestation. On the other hand, the application of C. odollam seed extract did not affect the number of leaves, fresh weight, and dry weight of pepper. This study indicate that C. odollam seed extract can be developed as a natural pesticide to control A. gossypii on pepper..

PENGARUH JUMLAH MATA TUNAS TERHADAP PERTUMBUHAN STEK BATANG TRUBUSAN SUNGKAI (Peronema canescens)

2021 ◽  
Vol 4 (2) ◽  
pp. 291
Author(s):  
Indri Elang Mayanti ◽  
Basir Achmad
Keyword(s):  
Tropical Forests ◽  
Dry Weight ◽  
Stem Cuttings ◽  
Root Dry Weight ◽  
Randomized Design ◽  
Two Factors ◽  
Experiment Unit ◽  
Bud Growth ◽  
Total Dry Weight

The areas of tropical forests in Indonesia always decrease every year, so that efforts are needed to cultivate plants efficiently for the supply of seedlings. Sungkai (Peronema canescens) has good quality wood that can be used for various purposes, either for construction, furniture, plywood or the leaves can be used for medicine. The purpose of this study was to analyze the growth of stem cuttings of sungkai based on the number of latent buds by calculating the root dry weight, bud dry weight, and total dry weight. This study used a factorial complete randomized design. There were two factors studied, namely the number of buds consisting of 2 levels: 2 buds and 1 bud, and the stem split factor. Each treatment was replicated 3 times and each experiment unit used 5 cuttings. The growth of sungkai cuttings in the treatment of two buds had a total dry weight of 170.04 grams, while the treatment of one bud had a total dry weight of 98.30 grams. The results of this study indicated that the more the number of latent buds, the more root and bud growth of cuttings.Keywords: Coppice; Latent buds; Cuttings; Sungkai

scholarly journals PEMANFAATAN PUPUK ORGANIK CAIR PAITAN (Tithonia diversifolia) PADA BERBAGAI DOSIS DAN RAGAM APLIKASINYA TERHADAP PERTUMBUHAN KAILAN (Brassica oleracea Var. Acephala)

2020 ◽  
Vol 11 (1) ◽  
pp. 25
Author(s):  
AHMAD TAOFIK ◽  
SOFIYA HASANI ◽  
AYU CAHYANINGTYAS ◽  
BUDY FRASETYA
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Analysis Of Variance ◽  
Growth Parameters ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Fresh Weight ◽  
Application Method ◽  
Randomized Design ◽  
Two Factors

The paitan plant contains allelopathic compounds for other plants so that the utilize of paitan plant as a source of liquid organic fertilizer (LOF) has not been widely applied. This research aimed to study the interaction between LOF dosage and appropriate application method of LOF to increase the growth of kailan plants. The research conducted at experimental garden of UIN Bandung from June-August 2016. The experimental design was a completely randomized design with two factors and replicated four times. The first factor was application methods (A), i.e. a1=direct application to the soil, and a2= spraying. The second factor was LOF dosage (T), i.e. t0: 0 ml plant-1, t1: 20 ml plant-1, t2: 40 ml plant-1, t3: 60 ml plant-1, t4: 80 ml plant-1. The growth parameters observed i.e. plant height (14, 21, 28, 35 and 42 Day after Transplanting (DAT)), leaf area 42 DAT, plant dry weight 42 DAT, and plant fresh weight 42 DAT. The data then analyzed with analysis of variance at a significant level of 5%. If the analysis of variance was significant, the Duncan multiple range test was used at α=5%. The research results showed there was no interaction between method of application with a various dosage of paitan LOF to all of the growth parameters. The application paitan LOF showed similar growth in terms of plant height, leaf area, plant dry, and plant fresh weight. The application method of paitan LOF direct to the soil or spraying to leaves can not increase kailan plant growth.

scholarly journals The Effect of Rhizobium japonicum on the Growth of Soybean Cultivars in Coastal Area

2019 ◽  
Vol 4 (1) ◽  
pp. 33
Author(s):  
Okti Purwaningsih ◽  
C. Tri Kusumastuti ◽  
Y. Sulistyo Nugroho ◽  
Casper Yoda Morib
Keyword(s):  
Coastal Area ◽  
Root Nodule ◽  
Agricultural Land ◽  
Dry Weight ◽  
Rhizobium Japonicum ◽  
Soybean Cultivars ◽  
Randomized Design ◽  
Two Factors ◽  
Cultivation Technology ◽  
Soybean Plants

The natural resources of the coastal area in Indonesia have the potential to be developed as an agricultural land with the support of both cultivation technology and land processing,  which one of them was done by using Rhizobium japonicum bacteria to meet the need of nitrogen in the soybean plants. This study aimed to determine the characteristics of nitrogen fixation in various soybean cultivars planted in the coastal area. The research was conducted in Mancingan, Parangtritis, Kretek, Bantul, DIY. The study was designed in Completely Randomized Design which consisted of two factors and was repeated three times. Factor I was Rhizobium japonicum inoculation (with inoculation and without inoculation); factor II was 10 various cultivars of soybean (Grobogan, Burangrang, Argomulyo, Anjasmara, Dena 1, Gema, Kaba, Wilis, Sinabung, Gepak Kuning). The results showed that the inoculation of Rhizobium japonicum in soybean cultivars in a coastal area could increase the number of root nodule, dry weight of root nodule, dry seed weight per plant, and harvest index. Burangrang cultivar planted in the coastal area was the most responsive to Rhizobium japonicum inoculation among other soybean cultivars tested.

scholarly journals Deterrência à alimentação e à oviposição de Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae) pelo uso pós vegetais em milho armazenado

2020 ◽  
Vol 16 (2) ◽  
pp. 50-59
Author(s):  
Gustavo Soares Wenneck ◽  
Reni Saath ◽  
Larissa Leite de Araújo ◽  
Nathália de Oliveira Sá ◽  
Pedro Paschoalin Ramos
Keyword(s):  
Insect Pest ◽  
Dry Weight ◽  
Control Treatment ◽  
Mentha Pulegium ◽  
Insecticidal Effect ◽  
Randomized Design ◽  
Low Weight ◽  
Stored Grains ◽  
Corn Kernels ◽  
Piper Aduncum

Plants with insecticidal effect are among the alternatives as a tool to control the insect-pest of stored grains. The objective of this study was to characterize the efficiency of plant-based powders on Sitophiluszeamaisinsects in stored grains. Usingfourteenplant species (Arnica montana Baccharistrimera,Coriandrum sativum,Coffea arabica,Cymbopogon martini,Helianthus annuus, Lippia gracillis,Mentha pulegium,Moringa oleífera,Nicotiana tabacum,Piper aduncum, Piper hispidinervum,Sesamum indicumandVitis labrusca)obtained from tritured vegetable material, and compared with a control treatment. The experiment carried out in a completely randomized design, with six replicates each treatment. In the tests, 0.5 g of the inert powders mixed into the grains (50 g) of hybrid corn AS 1551 into plastic vials and infested with 10emerged adultofS. zeamais. After 20 days of infestation, oviposition evaluated and counts of emerged adults. At the end of the infestation period, evaluated the dry weight of the insects, the weight of grains consumed and the period of development (egg-adult). Most of the vegetal powders presented effective action on the emerged insects. By the use of the powders,it verified reduction in the ooposition, except for Vitis labruscaand Sesamum indicumwhose egg numbers were higher than control, also had less effect on the development of caruncho larvae. The low weight of adults from corn kernels treated with Nicotiana tabacumpowder is relatedreduction in feeding of S. zeamaislarvae.

scholarly journals Relationships Between Nutrient Of Land And Cow’s Blood Added With Bioactivators On Performance of Soybean (Glycine max (L.) Merr.)

Akta Agrosia ◽  
2020 ◽  
Vol 23 (2) ◽  
pp. 67-71
Author(s):  
Fiana Podesta ◽  
Ririn Harini ◽  
Dwi Fitriani ◽  
Suryadi Suryadi
Keyword(s):  
Growth Performance ◽  
Plant Height ◽  
Dry Weight ◽  
Soybean Production ◽  
Randomized Design ◽  
Two Factors ◽  
National Production ◽  
Glycine Max L ◽  
Number Of Leaves ◽  
Effective Microorganism

Soybean production in Bengkulu Province is still lower than national production. Soybean production can still be improved by adding nutrients, one source of untapped nutrients is cow's blood which is still a waste. The purpose of this research is to determine the effect of cow’s blood added with bioactivators on growth performance of soybean. This research was conducted by using a complete randomized design (CRD) arranged factorially consisted of two factors with three replications. The first factor was the various kinds of cow’s blood added with bioactivators consisting of Yeast, Stale Rice, Microorganism-Bio(M-Bio), Effective Microorganism-4 (EM-4), and Rumen. The second factor was the concentration of cow’s blood added with bioactivators consisting of 15%, 30%, and 45%. Results showed: 1) There was no treatments interaction between various kinds of cow’s blood added with bioactivators and its concentration in the growth, 2) the various kinds of cow’s blood added with  bioactivators had significant effect in the growth of plant height, number of leaves, number of branches, wet and dry weight, but it had no significant effect on plant height and leaf area, and 3) The concentration of cow’s blood added with bioactivators  has no significant effect in the growth.  This study indicated that cow’s blood added with Rumen as bioactivator showed better growth performance of soybean. Keywords: bioactivators, cow’s blood, nutrient of land, performance of soybean

scholarly journals Study on The Characteristics of NaCl Treated Kenaf Fiber Epoxy Composite Board

2021 ◽  
Vol 891 (1) ◽  
pp. 012006
Author(s):  
T Setyayunita ◽  
R Widyorini ◽  
S N Marsoem ◽  
D Irawati
Keyword(s):  
Mechanical Properties ◽  
Natural Fibers ◽  
Physical And Mechanical Properties ◽  
Dry Weight ◽  
Kenaf Fiber ◽  
Composite Board ◽  
Randomized Design ◽  
Nacl Concentration ◽  
Two Factors ◽  
Composite Properties

Abstract The treatment of kenaf fiber surfaces with chemicals has proven to be an effective method to improve composite properties. Meanwhile, natrium chloride (NaCl) is one of the chemicals that has great potential to be used for modifying natural fibers. Therefore, this study aims to investigate the characteristics of a composite board made from NaCl-treated kenaf fiber and epoxy. The method used was a completely randomized design with two factors, namely the level of NaCl in the treatment solution including 1, 3, and 5%wt, as well as the epoxy content of 10, 20, and 30%wt based on the dry weight fiber. The NaCl treatment was carried out by soaking the fibers in the solution for 1 hour at room temperature, rinsed using water until the pH of the water reached 7, and then dried in an oven at 80ᵒC for 6 hours. Furthermore, the Kenaf fiber and epoxy were mixed manually, while the boards were manufactured using a heat pressing system at 120ᵒC, with a pressure of 3.5 MPa for 10 minutes, and a thickness of 10 mm. The physical and mechanical properties were then evaluated based on JIS A5908. The results showed that the composite board properties were optimum at NaCl 5%, 20% of epoxy, modulus of elasticity and rupture of 2.02 GPa, and 18.63 MPa respectively, internal bonding 1.94 MPa, thickness swelling 2.89 %, and water absorption of 10.49%. The results showed that the physical and mechanical properties of the composite board increased with a high NaCl concentration.

Pengaruh Berbagai Konsentrasi Atonik Terhadap Pertumbuhan Stek Panili (Vanilla plani

Agrotek ◽  
2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Amelia S. Sarungallo ◽  
Bagyono Bagyono ◽  
Bagyono Bagyono ◽  
Aris Patiung ◽  
Aris Patiung
Keyword(s):  
Root Length ◽  
Dry Weight ◽  
Germination Percentage ◽  
Single Node ◽  
Growing Media ◽  
Root Dry Weight ◽  
Randomized Design ◽  
Two Factors ◽  
Media Types ◽  
Completely Randomized Design

This research was aimed to identify the influence of Atonic cencentration to the growth of single-node Vanilla cutting planted at various growing media types. Completely randomized design was used in this research with two factors namely Atonic concentration (500 ppm, 1000 ppm, 1500 ppm, 2000 ppm, dan 2500 ppm) and growing media types (tanah, pasir, tanah + pupuk kandang, tanah + pasir, tanah + pasir + pupuk kandang). The result showed that there were no interaction between Atonic concentration and growing media types to the growth of single-node vanilla cutting. Furthermore, the application of Atonic concentration at 2000 ppm established the best result of root length (12,32 cm) and root dry weight (0,16); while the best result of germination percentage (92,23%) revealed by Atonic concentration of 1500 ppm. Regression analysis of germination percentage showed that the optimal concentration of Atonic was 1842 ppm with R<sup>2</sup> = 60,3%. Mixed media of soil + sand + dung performed the best result in root length, root dry weight and germination percentage.

scholarly journals PRODUCTIVITY OF GAMAL (Gliricidia sepium) AND INDIGOFERA (Indigofera zollingeriana) FORAGE ON DIFFERENT DOSAGE OF BIOORGANIC FERTILIZER

Pastura ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 105
Author(s):  
Roni N. G. K. ◽  
S. A. Lindawati
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Dry Weight ◽  
Gliricidia Sepium ◽  
Leaf Number ◽  
Randomized Design ◽  
Bioorganic Fertilizer ◽  
Two Factors ◽  
Indigofera Zollingeriana ◽  
Leaf Dry Weight

This study aims to obtain a study of the productivity of Gliricidia sepium and Indigofera zollingeriana plants which are given various dosage of bioorganic fertilizer. This study used a completely randomized design of factorial patterns of two factors: the first factor was the type of plant (G = Gamal; I = Indigofera) and the second factor was the dosage of bioorganic fertilizer: D0 = without fertilizer; D1 = 5 tons ha-1; D2 = 10 tons ha-1; D3 = 15 tons ha-1; D4 = 20 tons ha-1; D5 = 25 tons ha-1; and D6 = 30 tons ha-1, so there are 14 treatment combinations. Each treatment was repeated three times so that it consisted of 42 experimental units. The variables observed were plant height, leaf number, stem diameter, leaf dry weight, stem dry weight, total herbage dry weight, amount of chlorophyll, ratio of dry weight of leaf / stems, and leaf area per pot. The results showed that the productivity of Indigofera zollingeriana significant higher than Gliricidia sepium. The application of bioorganic fertilizer significantly increased plant height, leaf number, dry weight leaf, stem dry weight, total forage dry weight, amount of chlorophyll, and leaf area per pot, and the highest yield at 30 tons/ha. Based on the results of the study it can be concluded that the productivity of Indigofera zollingeriana is higher than Gliricidia sepium, bioorganic fertilizer increased plant productivity with the highest yield at 30 tons ha-1, and interaction only occurs in the leaf area per pot. Keywords: Indigofera zollingeriana, Gliricidia sepium, dosage of fertilizer, bioorganic fertilizer

scholarly journals APLIKASI KOMPOS TANDAN KOSONG KELAPA SAWIT DAN DOLOMIT PADA MEDIUM SUB SOIL INCEPTISOL TERHADAP BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PEMBIBITAN UTAMA

2018 ◽  
Vol 8 (2) ◽  
pp. 1 ◽  
Author(s):  
Al Ichsan Amri ◽  
Armaini Armaini ◽  
Mazmur Rahmat Amindo Purba
Keyword(s):  
Analysis Of Variance ◽  
Palm Oil ◽  
Elaeis Guineensis ◽  
Dry Weight ◽  
Real Effect ◽  
The Real ◽  
Randomized Design ◽  
Two Factors ◽  
Number Of Leaves ◽  
Completely Randomized Design

The purpose of this research is determining the effect of some  treatment combinations and to determine the combination of best compost bunches empty palm oil and dolomite that could support growth seeds palm oil plantations in a main nursery. This research has been conducted in the experimental field, Agriculture Faculty, University of Riau from April to July 2015. The research used Completely Randomized Design Factorial that consisting of two factors. The first factor is giving compost bunches empty palm oil : (37,5, 75 and 112,5 g/polybag).  The  second  factor  is  giving  lime  dolomite  (CaMg  (CO3)2) : (9, 18 and 30 g/polybag).   Each combination made three replications and two plants. The data were statistically analyzed using analysis of variance and the means were tested with Duncan 5%. The research results show that combination of compost bunches empty palm oil and dolomite had show the real effect on the increase in diameter hump of seedlings , but the effect not real on the parameters height of seedlings,increase number of leaves, volume roots, ratio crown rootsand and dry weight of seedlings. Combination compost bunches empty palm oil 112,5 g/polybag and dolomite 18 g/polybag showed better results for the growth of palm oil seedlings.

scholarly journals Efektivitas Minyak Atsiri Serai Untuk Pengendalian Penyakit Mosaik Kacang Panjang

2017 ◽  
Vol 19 (2) ◽  
pp. 39
Author(s):  
Supyani Supyani ◽  
Salim Widono ◽  
Ulfaizah Ulfaizah
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Growth And Development ◽  
Mosaic Disease ◽  
Time Of Application ◽  
Antiviral Compounds ◽  
Randomized Design ◽  
Two Factors ◽  
The Relationship ◽  
Lemongrass Essential Oil

<p>Production of cowpea has declined, one of them caused by virus infection that caused mosaic disease which was still difficult to controlled. This study aimed to determine the effectivity of antiviral compounds on lemongrass essential oils to development of mosaic disease and the relationship to growth and development of cowpea that infected. This study used Completely Randomized Design (CRD) with two factors, they are the time of application and concentration of lemongrass essential oil. Data were analyzed using F test and DMRT at level of 5%. Results showed that application of lemongrass essential oil at concentration of 1,8% before planting (soaking seeds) tend to delaying the emergence of mosaic disease symptoms. Application of lemongrass essential oil at all of concentration that used, can inhibiting the disease intensity up to 31.39%. However, apllication of lemongrass essential oils in plants infected with a virus that causes mosaic has not able to improve plant growth and development.</p>

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