scholarly journals KEEFEKTIFAN BEBERAPA DOSIS INSEKTISIDA NABATI BABADOTAN (Ageratum conyzoides L.) TERHADAP KUMBANG BUBUK BIJI JAGUNG (Sitophilus zeamais M.) DI PENYIMPANAN

2020 ◽  
Vol 36 (1) ◽  
pp. 29-36
Author(s):  
Rahmida Sari ◽  
Desita Salbiah
Keyword(s):  
Effective Dose ◽  
Control Strategies ◽  
Total Mortality ◽  
Sitophilus Zeamais ◽  
Ageratum Conyzoides ◽  
Corn Seed ◽  
Randomized Design ◽  
Plant Pest ◽  
Corn Kernels ◽  
Storage Pest

ABSTRACT Sitophilus zeamais M. is a storage pest that attacks corn kernels in the storage. Pest control strategies in storage which are often carried out are chemicals, namely insecticides in the form of fumigants. One of them is using plant-based insecticides. Babadotan is a plant that can be used as a botanical insecticide. This research aimed to obtain an effective dose of babadotan flour towards the mortality of S. zeamais pest. This research was conducted at the Plant Pest Laboratory, Faculty of Agriculture, Riau University from March to May 2019. The research was conducted experimentally using a completely randomized design (CRD) with 6 treatments and 4 replications. Treatment given was babadotan flour with the following dosage: Babadotan flour dose 0 g.100 g-1 corn kernels,          2 g.100 g-1 corn kernels, 4 g.100 g-1 corn kernels, 6 g.100 g-1 corn kernels, 8 g.100 g-1 corn kernels, and 10 g.100 g-1 corn kernels. Dose 10 g.100 g-1 babadotan flour corn kernels is an effective dose to control Sitophilus zeamais which can cause total mortality of 82.5% with an initial death of 79,75 hours after application and Lethal time 50 254 hours after application. Application of babadotan flour with a dose of 10 g.100 g-1 corn kernels produced the lowest percentage of corn seed shrinking at 9,55% and resulted in the least individual increase of 4,75 tails. Keywords: Ageratum conyzoides L., Sitophilus zeamais M., Corn

scholarly journals Pertumbuhan Vegetatif dan Kadar Gula Biji Jagung Manis (Zea mays saccharata, Sturt) di Pekanbaru

2018 ◽  
Vol 13 (2) ◽  
pp. 73-78 ◽  
Author(s):  
Surtinah Surtinah ◽  
Seprita Lidar
Keyword(s):  
Plant Height ◽  
Sweet Corn ◽  
Polynomial Regression ◽  
Sugar Content ◽  
Leaf Length ◽  
Leaf Width ◽  
Design Environment ◽  
Corn Seed ◽  
Randomized Design ◽  
Corn Kernels

Research conducted an experiment using a completely randomized design environment with four replications, and the design of treatment used is six varieties of sweet corn. Analysis of data using polynomial regression, the parameters measured were plant height, leaf number, leaf length, leaf width, and sugar beans, followed by analyzing the relationship between the growth of plants with a sugar content of sweet corn kernels. The results showed that leaf width gives a weak relationship to the sugar content of sweet corn seed, and leaf length, number of leaves and plant height had a close relationship to the sugar content of sweet corn kernels.

scholarly journals Uji Beberapa Dosis Tepung Daun Gamal (Gliricididia sepium Jacq.) Terhadap Sitophilus oryzae L. Pada Beras Di Penyimpanan

2018 ◽  
Vol 1 (1) ◽  
pp. 24
Author(s):  
Rusli Rustam ◽  
Agus Sutikno ◽  
Jamiatul Laila
Keyword(s):  
Sitophilus Oryzae ◽  
Total Mortality ◽  
Gliricidia Sepium ◽  
Time Of Death ◽  
Randomized Design ◽  
Plant Pest ◽  
Leaf Powder ◽  
Lethal Time ◽  
Completely Randomized Design ◽  
Dose Levels

Rice is one of serealea comodity that susceptible with pest storage. One of the pest that often attack the rice in storage is Sitophilus oryzae L. The alternative for control S. oryzae L. as fumigant which enviromentally sound is Gliricidia sepium Jacq. as organic insecticide. This research aims to get the best dose G. sepium Jacq. leaf powder to control S. oryzae L. pest in rice storage. This research conducted at Laboratory of Plant Pest, Faculty of Agriculture, University of Riau, Pekan baru from Mei until Juni 2016. This research arranged experimentally by using Completely Randomized Design consisting of 5 treatments and 4 replications. The treatment consist of 5 dose levels were 0 g/100 g rice, 2 g/100 g rice, 4 g/100 g rice, 6 g/100 g rice and 8 g/100 g rice. The result showed that giving of G. sepium Jacq. leaf powder with dose 8 g/100 g rice causes time of death beginningS. oryzae L. during 31.50 hours after application, lethal time 50 during 282.8 hours after application, total mortality was 70%, amount of generation was 9,75 beetles and  decrease of seed weight’s rice was 1.08%.

UJI BEBERAPA KONSENTRASI EKSTRAK DAUN MIMBA (Azadirachta indica A. Juss) UNTUK MENGENDALIKAN LARVA Lamprosema indicata F. PADA TANAMAN KEDELAI (Glycine max L. Merill)

2021 ◽  
Vol 35 (1) ◽  
pp. 1-6
Author(s):  
Desita Salbiah ◽  
Nelly Andria
Keyword(s):  
Glycine Max ◽  
Azadirachta Indica ◽  
Total Mortality ◽  
Botanical Insecticide ◽  
Alternative Control ◽  
Death Time ◽  
Randomized Design ◽  
Plant Pest ◽  
Glycine Max L ◽  
Completely Randomized Design

The Lamprosema indicata Fabricius larvae is one of the main pests in soybean plantations, which cause up to 80% damage. The alternative control is the use of neem Leafs (Azadirachta indica A. Juss) which have the potential as a botanical insecticide. This research aims to find out the effective concentration of neem Leafs extract to control Lamprosema indicata F. larvae on soybean (Glycine max L. Merill). The research was conducted at the Laboratory Plant Pest and Experimental Farm in the Faculty of Agriculture, University of Riau from May to October 2018. The research was carried out by using a completely randomized design (CRD) with 6 treatments and 4 replications to obtain 24 experimental units. Treatment consist of several concentrations of neem leafs extract 0 g.l-1 water, 20 g.l-1 water, 40 g.l-1 water, 60 g.l-1 water, 80 g.l-1 water and 100 g.l-1 water. The results showed that the concentration of 80 g.l-1 water was effective to control the L. indicata larvae with an initial death time of 5.50 hours and total mortality was 87.50%.

scholarly journals UJI BEBERAPA KONSENTRASI EKSTRAK TEPUNG DAUN SRIKAYA (Annona squamosa L.) UNTUK MENGENDALIKAN HAMA Aphis gossypii Glover PADA TANAMAN CABAI

2021 ◽  
Vol 12 (1) ◽  
pp. 9
Author(s):  
Hafiz Fauzana ◽  
Rizky Aulina Harahap
Keyword(s):  
Aphis Gossypii ◽  
Total Mortality ◽  
Effective Concentration ◽  
Initial Time ◽  
Annona Squamosa ◽  
Randomized Design ◽  
Plant Pest ◽  
Aphis Gossypii Glover ◽  
Leaf Powder ◽  
The Right

Aphis gossypii Glover is the main pest that attacks chili plants. Control efforts that are often carried out are by using synthetic insecticides. Safe pest control is the use of vegetable insecticides. Srikaya is a plant that can be used as a botanical insecticide. The purpose of this study was to obtain an effective concentration of srikaya leaf powder extract against A. gossypii pest mortality. This research was conducted at the Plant Pest Laboratory of the Faculty of Agriculture, Riau University from March to July 2019. The study was conducted experimentally using a completely randomized design (CRD) with 6 treatments and 4 replications. The treatments given were extracts of srikaya leaf flour with the following concentrations: Srikaya flour with a concentration of 0 g.l-1 water, 20 g.l-1 water, 40 g.l-1 water, 60 g.l-1 water, 80 g.l-1 water, 100 g.l-1 water. The parameters observed were the initial time of death of Aphis gossypii, Lethal time 50 (LT50), daily mortality, total mortality, Lethal concentration (LC50), temperature and humidity. The results of this study indicate that the application of the extract of srikaya leaf flour (Annona squamosa L.) on concentration of 40 gl-1 srikaya leaf meal was an effective concentration to control A. gossypii which can cause total mortality of 82.5% with LC 50% is 1.37% or equivalent to 13.7 gl-1, and the right concentration to kill. 95% of pests is 6.37% or equivalent to 63.7 gl-1.

scholarly journals UJI BEBERAPA KONSENTRASI EKSTRAK KULIT JENGKOL (Pithecellobium lobatum Benth) UNTUK MENGENDALIKAN ULAT DAUN BAWANG (Spodoptera exigua Hubner)

2021 ◽  
Vol 4 (2) ◽  
pp. 79-89
Author(s):  
Divasyah Luthfi Nasution ◽  
Rusli Rustam
Keyword(s):  
Spodoptera Exigua ◽  
Total Mortality ◽  
Beet Armyworm ◽  
Initial Time ◽  
Botanical Pesticides ◽  
Randomized Design ◽  
Plant Pest ◽  
Lethal Time ◽  
Completely Randomized Design ◽  
Production Losses

Beet armyworm (Spodoptera exigua Hubner) is one of the main problems in shallot cultivation which can cause production losses of up to 100% if not controlled. The use of botanical pesticides from jengkol rind extract (Pithecellobium lobatum Benth) is a solution to control beet armyworms (Spodoptera exigua Hubner). This study aims to obtain a concentration of jengkol rind extract which is effective to controlling beet armyworm. The study was conducted at the Laboratory of Plant Pest and Experimental Garden at the Faculty of Agriculture, University of Riau from January until March 2020. This research was conducted experimentally using a completely randomized design (CRD) with five treatments and four replications. The treatments given were jengkol rind extract concentration   0 g.l-1 water, 25 g.l-1 water, 50 g.l-1 water, 75 g.l-1 water and 100 g.l-1 water. The results indicate that the application of jengkol rind extract 100 gl-1 water is an effective concentration to control beet armyworm with an initial time of death 12.75 hours, a lethal time 50 at 37.50 hours, the highest daily mortality on the second day at 37.5% and total mortality is 92.5% in the 5 days after application.

scholarly journals UJI BEBERAPA KONSENTRASI EKSTRAK BIJI PINANG (Areca catechu L.) UNTUK MENGENDALIKAN HAMA ULAT JENGKAL (Chrysodeixis chalcites Esper) PADA TANAMAN KEDELAI (Glycine max L.)

2021 ◽  
Vol 35 (2) ◽  
pp. 51-58
Author(s):  
Desita Salbiah ◽  
Rusli Rustam ◽  
Forti Senorita Daeli
Keyword(s):  
Glycine Max ◽  
Total Mortality ◽  
Death Time ◽  
Randomized Design ◽  
Plant Pest ◽  
Areca Catechu ◽  
Glycine Max L ◽  
Lethal Time ◽  
Chrysodeixis Chalcites ◽  
Soybean Plants

Chrysodeixis chalcites Esper is the main pests in soybean plants cultivation that can cause damage up to 90%.  One of controlling was done by using areca nuts (Areca catechu L.) which has a potential as a botanical insecticide. This study aimed to obtain effective concentrations of areca nuts extract to control Chrysodeixis chalcites Esper pests on soybean plants (Glycine max L.). This research was conducted at the Laboratory of Plant Pest and Experimental Farm, Faculty of Agriculture, Riau University, Pekanbaru from August to November 2018. The study was conducted experimentally using a completely randomized design (CRD), which consisted of five treatments and four replications, namely: the concentration areca nuts extract 0 g.l-1 water, 20 g.l-1 water, 40 g.l-1 water, 60 g.l-1 water, and 80 g.l-1 water. The results showed that the concentration of 80 g.l-1 of water was an effective concentration to control Chrysodeixis chalcites pest with an initial death time of 14 hours, lethal time 50 29.25 hours after application, and total mortality of 87.50%.

Screening and Biochemical Analysis on Blackgram Genotypes for Resistance against Storage Pest Bruchine [Callosobruchus maculatus (F.)]

2021 ◽  
Author(s):  
S. Ragul ◽  
N. Manivannan ◽  
K. Iyanar ◽  
N. Ganapathy ◽  
G. Karthikeyan
Keyword(s):  
Biochemical Analysis ◽  
Callosobruchus Maculatus ◽  
Adult Emergence ◽  
Developmental Time ◽  
Developmental Period ◽  
Ms Analysis ◽  
Randomized Design ◽  
Biochemical Components ◽  
Storage Pest ◽  
Confirmatory Trial

Background: Blackgram [Vigna mungo (L.) Hepper] is a rich source of protein. It is one of the major crops essentially involved in daily human diets. However, storage pest bruchine [Callosobruchus maculatus (F.)] is a major production constraint for legumes. A research was formulated to assess the bruchine resistance in 20 blackgram genotypes along with the biochemical analysis to find out the active biochemical components responsible for the resistance activity.Methods: The experiment was carried out during August- October, 2019 at Entomology Laboratory, National Pulses Research Center, Vamban, India. The experimental material comprised of 20 blackgram genotypes which were screened for bruchine resistance. Further, confirmatory trial was conducted with selected resistant entries and highly susceptible entries during October- December, 2019. Both experiments were carried out in completely randomized design and replicated three times. GC-MS analysis on the resistant and susceptible entries were performed to ascertain the active biochemical components conferring resistance.Result: Among the genotypes, TU 68 had comparatively late developmental time (days), less number of adult emergence, higher mean developmental period (days), less susceptibility index, less seed damage (%) and less seed weight loss (%). Genotype TU 68 was found to be resistant in the confirmatory trial also. Less number of adult emergence and higher mean developmental period indicated the delayed developmental period which is a mechanism of bruchine resistance. GC-MS analysis on resistant (TU 68) and susceptible (MDU 1) genotypes indicated the presence of active biochemical compounds with insectifuge activity in TU 68. Hence, TU 68 could be utilized in the hybridization programmeas donor for bruchine resistance.

scholarly journals Effect of aqueous neem seed extract via irrigation on larvae of Liriomyza sativae in melon crop

2018 ◽  
Vol 36 (3) ◽  
pp. 353-356 ◽  
Author(s):  
Ewerton M Costa ◽  
Francisco EL Silva ◽  
Elton L Araujo
Keyword(s):  
Larval Mortality ◽  
Total Mortality ◽  
Seed Extract ◽  
Neem Seed ◽  
Liriomyza Sativae ◽  
Randomized Design ◽  
Soil Irrigation ◽  
Completely Randomized Design ◽  
Pupal Mortality ◽  
Neem Seed Extract

ABSTRACT The leafminer [Liriomyza sativae (Diptera: Agromyzidae)] is one of the main pests of melon crop (Cucumis melo) in the states of Rio Grande do Norte and Ceará. Thus, adopting strategies to control this destructive insect is essential. The aim of this study was to evaluate the effect of aqueous neem seed extract, applied to soil via irrigation, on leafminer larvae, in the melon crop. An experiment was conducted in greenhouse, in completely randomized design, consisting of five treatments (four doses of aqueous neem seed extract: 1; 3; 5 and 10 g/100 mL) and the control consisting only of distilled water and 10 replicates (melon plants). The treatments were applied in a single dose, via soil irrigation. In the first stage of the evaluation, 24 hours after application, the number of dead larvae per plant was counted. In the second step, pupal mortality was recorded. The total mortality was also calculated considering the number of larvae and the number of emerged adults. We verified that, increasing the concentration of aqueous neem seed extract, an increase in the larval and pupal mortality of the leafminer in melon crop was noticed. The concentration 10 g/100 mL presented the best results, resulting in 36.4% of larval mortality, 96.5% of pupal mortality and 96.8% of total mortality.

scholarly journals CNSL Concentration and Natural Dyes Effects in Formulation of Botanical Pesticide on Sitophilus zeamais and Maize Seed Quality

2020 ◽  
Vol 4 (1) ◽  
pp. 1-9
Author(s):  
Dian Astriani ◽  
Wafit Dinarto ◽  
Aji Jatmiko
Keyword(s):  
Seed Quality ◽  
Sitophilus Zeamais ◽  
Natural Dyes ◽  
Maize Weevil ◽  
Maize Seeds ◽  
Botanical Pesticide ◽  
Randomized Design ◽  
Efficiency And Effectiveness ◽  
Push Down

Maize is an important commodity in Indonesia and is vulnerable to maize weevil (Sitophilus zeamais) during storage which can cause a 100% yield loss. Chasew Nut Shell Liquid (CNSL) is a botanical pesticide able to control S. zeamais. Increasing CNSL efficiency and effectiveness requires additional adjuvants, such as solvents and dyes. Natural dyes addition is intended to provide seed markers. This study aimed to determine the best CNSL and natural dye formulation to control maize weevil and maintain maize seeds quality during storage. The research was conducted from August to October 2018 at the Agronomy Laboratory, Faculty of Agroindustry, Yogyakarta Mercu Buana University. The research was a single factor consisted of seven treatments with four replications arranged in a completely randomized design (CRD). Treatments were combinations of CNSL concentrations with the addition of natural dyes from suji leaf and teak leaves with one untreated control. The results of the research showed that CNSL as a seed treatment botanical pesticide could cause mortality and suppress S. zeamais populations and maintain the quality of maize seeds during storage for 12 weeks. Treatments with 20% CNSL formulation concentration and the addition of natural dyes both leaf pleomele or teak leaves could cause higher mortality and push down more populations and also could better maintain seed quality than 10 and 0% CNSL formulation concentrations.

scholarly journals Barley Residues Allelopathic Effects on Corn Seed Germination and Seedlings Growth

2019 ◽  
Vol 52 (1) ◽  
pp. 26-33
Author(s):  
M. Khoshkharam ◽  
W. Sun ◽  
Q. Cheng ◽  
M.H. Shahrajabian
Keyword(s):  
Germination Rate ◽  
Germination Percentage ◽  
Control Treatment ◽  
Coleoptile Length ◽  
Plant Organs ◽  
Corn Seed ◽  
Randomized Design ◽  
Stem Extract ◽  
Four Levels ◽  
Radicle Length

Abstract Allelopathy is the detrimental effect of one crop on germination or development of a plant of another species. A factorial layout within completely randomized design with four replications was used to survey the influence of barley extract on corn seeds. Treatments included plant organs extract (leaf, stem, root and total), and different barley extract densities (Nosrat cultivar) includes four levels of 0%, 25%, 50% and 100%. The influence of barley extract was significant on coleoptile weight, radicle weight, radicle length and coleoptile length. Plant organs had meaningful effect on germination rate, germination percentage, coleoptile weight, radicle weight, radicle length and coleoptile length. Among all experimental characteristics, coleoptiles length was influenced by interaction between barley extract and plant organ. Although, the highest germination rate and germination percentage was related to 25% and 100% of barley extract density, the maximum coleoptile weight, radicle weight, radicle length and coleoptiles length was related to control treatment (0%). Leaf extract has obtained the higher values of germination rate, germination percentage, coleoptile weight, radicle weight, radicle length and coleoptile length. Interaction between control treatment (0% plant extract) and stem extract had obtained the highest coleoptiles weight, radicle weight, radicle length and coleoptile length. Hence, from the obtained results, it can be concluded that the extracts of barley may have allelopathic influence on germination and seedling growth of corn.

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