scholarly journals Bio-efficacy of Mineral Oil against Yellow Mite in Dark Jute (Corchorus olitorius L.) under Terai Region of West Bengal

2020 ◽  
pp. 77-82
Author(s):  
Prahlad Sarkar ◽  
Srima Das ◽  
Shyamal Kheroar ◽  
Avijit Kundu ◽  
Swapan Kumar Barman ◽  
...  
Keyword(s):  
Block Design ◽  
Environmental Safety ◽  
Mineral Oil ◽  
Post Treatment ◽  
Neem Oil ◽  
Polyphagotarsonemus Latus ◽  
Randomized Block Design ◽  
Cropping Season ◽  
Effective Combination ◽  
Treatment Observation

An experiment was conducted during pre-kharif season of 2016 and 2017 to determine the efficacy of relatively cheaper, safer horticultural mineral oil on yellow mite (Polyphagotarsonemus latus). The experiment was laid out in randomized block design with seven treatments [T1- mineral oil @ 3 ml/litre at 35 and 50 days after sowing, T2- mineral oil @ 6 ml/litre at 35 and 50 DAS, T3- mineral oil @ 9 ml/litre at 35 and 50 DAS, T4-Neem oil @ 3 ml/litre at 35 and 50 DAS, T5- mineral oil @ 3 ml/litre + neem oil @ 3 ml/litre at 35 and 50 DAS and T6- Control] replicated four times. Two scheduled spraying of each treatment was done on standing jute crop at 15 days interval. The effect of treatments was significant on post treatment mite population recorded after spray for both the cropping season. Among the treatments, T5 was found to be the most effective combination. The post treatment observation during 2016 and 2017 at 7 days after treatment indicated significantly less number of mites i.e. (1.08 and 0.84 mites cm-2) and (0.83 and 0.41 mites cm-2) respectively in the treatment T5. Within the treatments, maximum plant height (216.92 and 206.64 cm) and yield (34.68 and 28.28 q ha-1) were also observed in treatment T5. Considering the effectiveness against mite on jute as well as the environmental safety, mineral oil might be suggested as biorational component of IPM for effective management of yellow mite.

Field Efficiency of Certain Biopesticides and Neem Products Against Helicoverpa armigera (Hubner) on Chickpea (Cicer arietinumL.)

2019 ◽  
Vol 10 (01) ◽  
Author(s):  
Nihad H. Mutlag ◽  
Ameer S. A. Al-Haddad
Keyword(s):  
Helicoverpa Armigera ◽  
Block Design ◽  
Individual Treatment ◽  
Neem Oil ◽  
Larval Population ◽  
Neem Cake ◽  
Combination Treatments ◽  
Randomized Block Design ◽  
Helicoverpa Armígera ◽  
Nuclear Polyhedrosis

A field study was conducted to evaluate the efficiency of four microbial insecticides viz. Beauveria bassiana; HaNPV (Helicoverpa armigera Nuclear Polyhedrosis virus); (Bacillus thuringiensisvar.kurstaki 2 gm/L); HaNPV+Bt; neem oil; neem cake and D.D.V.P EC 76% @0.05% at Research Farm SHIATS,Allahabad during rabi season of 2011-2012. The experiment was laid out in randomized block design with seven treatment and replicated thrice. The observation larval populations of H. armigera were recorded one day before treatment was recorded at 3,7, and 10 days after treatments. The larva population of H. armigera appeared in the third week of February (8 the Standard week) and reached its peak of 14.65 larvae in first week of April and decline rapidly with maturation of crop. There was only one peak in the larval population observation in the 1st week. Bacillus thuringiensis was the most effective chemical by D.D.V.P.76%@0.05% . Among the microbial insecticides. HaNPV ,was the most effective followed by HaNPV+Bt and neem cake . The combination treatments were less effective than the individual treatment neem oil and B. bassiana were the least effective treatment in reducing the larval population of Heliverpa armigera.

scholarly journals PERAKITAN TEKNOLOGI PENGELOLAAN HARA SPESIFIK LOKASI PADI SISTEM GOGO RANCAH DI DESA SEMAWUNG KECAMATAN ANDONG KABUPATEN BOYOLALI

Agric ◽  
2017 ◽  
Vol 28 (1) ◽  
pp. 31
Author(s):  
Andrias ◽  
Suprihati ◽  
Diah Setyorini
Keyword(s):  
Nutrient Management ◽  
Block Design ◽  
Organic Fertilizer ◽  
Panicle Length ◽  
Randomized Block Design ◽  
Cropping Season ◽  
Significant Difference ◽  
Technological Tool ◽  
Npk Fertilizer ◽  
Hill Number

<p>ABSTRACT</p><p>Rainfed ricefield, planted at least for one cropping season in a year, depends heavily on rainfall for its water supply. This land generally is low in fertility as indicated by the limited availability of essential plant nutrients in particular nitrogen (N), phosphorus (P), and potassium (K) as well as organic matter. Its productivity is relatively low with a rather erratic precipitation distribution. In order to overcome fertility issue in rainfed land, it is necessary to conduct an integrated nutrient management; one of which is by implementing location specific nutrient management. This study aims to seek the appropriate nutrient management in rainfed paddy field of Semawung village in the sub-district of Andong of Boyolali regency to be provisioned as a technological tool of location specific nutrient management. Research on nutrient management of gogo rancah system-based paddy production was carried out from October 2014 to January 2015. The field experiment was arranged in a Randomized Block Design involving eight treatments and three replications for each treatment. Treatments were combinations of NPK fertilizer, Organofosfat, and straw-based organic fertilizer. Nutrient management using NPK fertilizer and its combination with Organofosfat or organic fertilizer had very significant effect on plant height and number of stem per hill, significantly affected number of panicle per hill, panicle length, and number of fully-filled grain but did not result in difference of fully filled grain percentage and weight of 1000 grains. There was no significant difference between the treatment of 100% of NPK fertilizer and the combination of 75% of NPK fertilizer with straw-based fertilizer regarding these variables: number of stem per hill, number of panicle per hill, panicle length, number of grain per hill, number and percentage of fully-filled grain, weight of 1000 grains, and weight of fresh grain and milled grain yield. Therefore, the latter treatment is feasible as an option of location-specific nutrient management Semawung village.</p>

scholarly journals Economic Feasibility of Chemical Weed Control in Soybean Production in Serbia

Agronomy ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 291 ◽  
Author(s):  
Maja Meseldžija ◽  
Miloš Rajković ◽  
Milica Dudić ◽  
Milica Vranešević ◽  
Atila Bezdan ◽  
...  
Keyword(s):  
Weed Control ◽  
Block Design ◽  
Economic Feasibility ◽  
Economic Injury Level ◽  
Weed Species ◽  
Soybean Crop ◽  
Economic Justification ◽  
Randomized Block Design ◽  
Effective Combination ◽  
Economic Injury

The aim of this study was to investigate the efficacy and phytotoxicity of herbicides in combinations and to determine their economic feasibility in the soybean crop. The trials were placed at two locations, Pobeda and Budisava (Serbia), during 2016 and 2018, organized in a randomized block design with four replicates of all herbicide combinations (metribuzin + S-metolachlor; imazamox + oxasulfuron + typhenesulfuron-methyl; metribuzin + S-metolachlor + imazamox + oxasulfuron + typhenesulfuron-methyl; and bentazon + imazamox + typhenesulfuron-methyl). At the first location, 16 weed species were determined, while in the second location, 14 were determined. The highest reduction in the number of weeds was achieved at the first location, using a combination of herbicides metribuzin + S-metolachlor + imazamox + oxasulfuron + typhenesulfuron-methyl with a total efficacy that ranged from 96.98% to 97.40%. Only on the second location bentazone + imazamox + tifensulfuron-methyl showed passable phytotoxicity on soybean, during both years. Based on the established economic justification, in the combinations of metribuzin + S-metolachlor + imazamox + oxasulfuron + typhenesulfuron-methyl, yield was increased for 2350 kg/ha or 1.91 times more, according to the untreated variant at first location. The economic injury level at the most effective combination of herbicides was 52.70 weeds/m2.

scholarly journals Juvenile response to conifer release alternatives on aspen-white spruce boreal mixedwood sites.Part II: Quality of aspen regeneration

2005 ◽  
Vol 81 (4) ◽  
pp. 548-558 ◽  
Author(s):  
Sylvia Greifenhagen ◽  
Douglas G Pitt ◽  
Monique C Wester ◽  
F. Wayne Bell
Keyword(s):  
Populus Tremuloides ◽  
Block Design ◽  
Ground Level ◽  
Fibre Production ◽  
Post Treatment ◽  
Stem Volume ◽  
Randomized Block Design ◽  
Stump Sprouting ◽  
Root Suckering

This study, a component of the Fallingsnow Ecosystem Project, was designed to investigate the effects of conifer release alternatives on the quality of regenerating trembling aspen (Populus tremuloides Michx.). A randomized block design was used to compare untreated aspen with aspen growing in areas treated with two broadcast cutting treatments (brushsaw and Silvana Selective) and two broadcast herbicide treatments (glyphosate and triclopyr). The glyphosate treatment virtually eliminated aspen, whereas triclopyr tended to top-kill aspen, resulting in lateral dominance. Both fall cutting treatments generated prolific aspen root suckering and stump sprouting. Stain was common in aspen across the study site in damaged, untreated, and post-treatment stems, indicating that stain develops rapidly in young aspen suckers. Stems damaged by the treatments had higher incidences of decay (33% of cut stems and 10% of herbicide-damaged stems) than untreated aspen (8% of stems); however, decay volume was low for all treatments (1–4% of total stem volume affected). The location of decay (e.g., near ground level in cut stems) and presence of stem crooks in herbicide-treated aspen are important effects of the treatments on aspen quality. Armillaria root disease, which was found throughout the study site, was more prevalent in roots of treatment-damaged and untreated aspen than in suckers that originated post-treatment. These differences can be attributed to proximity to parent stumps, prevalence of root wounds, and older age of damaged and untreated stems. Key words: aspen quality, decay, conifer release, vegetation management, fibre production

scholarly journals Efficacy of three botanicals and a microbial derivatives acaricide (Abamectin) on the control of jute yellow mite, Polyphagotarsonemus latus (Bank)

2016 ◽  
Vol 14 (1) ◽  
pp. 1-6
Author(s):  
A Rahman ◽  
KS Islam ◽  
M Jahan ◽  
N Islam
Keyword(s):  
Environmental Safety ◽  
Mite Infestation ◽  
Neem Oil ◽  
Polyphagotarsonemus Latus ◽  
Infested Plant ◽  
Field Laboratory ◽  
Highly Effective ◽  
Karanja Oil ◽  
Experimental Plots ◽  
Reduced Risk

Three botanical oils and of microbial derivatives an acaricide (Abamectin) were evaluated for their efficacy in controlling yellow mite Polyphagotarsonemus latus in the field laboratory of Entomology, Bangladesh Agricultural University, Mymensingh. The selected botanical oils viz. Neem oil, Mahogany oil and Karanja oil and the acaricide Ambush 1.8 EC were tested against jute yellow mite on standing jute plants of the experimental plots and assessed for their effect on the basis of population of the pest at 24, 48 and 72 hours after treatment and the reduction of yellow mite infested plant after 7 and 10 days of spraying. The acaricide Ambush 1.8 EC was highly effective showing reduction of 80.25% mite infested plant. Among the botanicals, Neem oil and Mahogany oil showed better efficacy and caused 60.55 % and 55.89 % reduction of mite infestation. Karanja oil was not found promising in controlling yellow mite of jute. Considering the effectiveness against the mite pest as well as the environmental safety, use of Neem and Mahogany oil and also the reduced risk acaricide, Ambush 1.8 EC might be suggested in the IPM of yellow mite.J. Bangladesh Agril. Univ. 14(1): 1-6, June 2016

scholarly journals THE POTENCY OF BOTANICAL INSECTICIDES TO CONTROL Aphis gossypii (HEMIPTERA:COCCOIDEA:APHIDIDAE) ON PATCHOULI PLANT

2016 ◽  
Vol 25 (1) ◽  
pp. 61
Author(s):  
Tri Lestari Mardiningsih ◽  
Nurbetti Tarigan ◽  
Cucu Sukmana ◽  
Agus Kardinan
Keyword(s):  
Observation Interval ◽  
Block Design ◽  
Aphis Gossypii ◽  
Botanical Insecticides ◽  
Research Station ◽  
Clove Oil ◽  
Neem Oil ◽  
Neem Extract ◽  
Randomized Block Design ◽  
Medicinal Crops

<p class="IsiabstrakIndonesia">Attack of <em>Aphis gossypii</em> is one of constraints in cultivating of patchouli plant. An experiment with the purpose to examine the effectiveness of botanical insecticides to <em>A. gossypii </em>on patchouli plant. The experiment was carried out in Research Station of Indonesian Spice and Medicinal Crops Research Institute, at Cicurug, Sukabumi from June to October 2011. The experiment was arranged in a Randomized Block Design, nine treatments and three replications. The treatments were mixing of neem oil + soap nuts, neem oil + clove oil, neem oil + citronellal oil, neem oil + clove oil + citronellal oil, citronellal oil, clove oil, neem extract, carbosulfan, and control. Patchouli plants were planted with spacing of 40 cm x 60 cm. The number of plant population plot<sup>-1</sup> was 25 plants and the number of sample plot<sup>-1</sup> for observation was five plants. Sampling of observed plants was conducted diagonally. Observation was carried out by counting population of <em>A. gossypii</em> on one shoot. Application of insecticides was conducted one day after the first observation. Interval of application was every week, conducted eight times. Other parameters observed were plant height and production of patchouli. Results showed that all treatments of botanical insecticides were effective to decrease of <em>A. gossypii</em><em> </em>population. The most effective treatment was that of neem extract with the value of  efficacy was more than 80% occurred at seven assessments. Plant high between treatment is not significant different.</p>

scholarly journals Selectivity and Effectiveness of Herbicides in the Grain Sorghum Crop

2019 ◽  
Vol 37 ◽  
Author(s):  
G.V. PIMENTEL ◽  
D.F. GUIMARÃES ◽  
S.G. MOREIRA ◽  
M.O.T. ÁVILA ◽  
I.A. MARTINS ◽  
...  
Keyword(s):  
Weed Control ◽  
Block Design ◽  
Mineral Oil ◽  
Grain Sorghum ◽  
The Other ◽  
Randomized Block Design ◽  
Hand Weeding

ABSTRACT: Over the years, cultivated areas of sorghum have expanded considerably in Brazil. Chemical weed control has become an obstacle due to the scarcity of herbicides registered for the crop. The aim of this study was to evaluate the efficiency of weed control and selectivity of herbicides applied in pre and post emergence in the crop. Two experiments were conducted. In one of them, the hybrid BRS 310 was used while DKB 550 was used in the other. The experiments were performed in the field in randomized block design, evaluating seven treatments with four replications. The used treatments were: 1. Hand weeding, 2. S-metolachlor (1,440 g a.i. ha-1), 3. S-metolachlor (1,440 g a.i. ha-1) + atrazine (2,000 g a.i. ha-1), 4. atrazine (2,000 g a.i. ha-1), 5. atrazine (3,000 g a.i. ha-1), 6. atrazine (2,000 g a.i. ha-1) + mineral oil (0.25%), and 7. atrazine (2,000 g a.i. ha-1) + mineral oil (0.5%). It was verified that post-emergence atrazine was efficient in the weed control and selective to the sorghum crop, not affecting productivity, except in mixture with mineral oil (0.5%). S-metolachlor cannot be recommended in pre-emergence for the tested cultivars because it is not selective, reducing plants and productivity.

scholarly journals THE EFFECT OF SOME OF COCONUT WATER CONCENTRATION IN ARTIFICIAL MEDIA TO CHRYSANTHEMUM GROWTH (Dendranthema grandiflora) BY IN VITRO

2019 ◽  
Vol 19 (2) ◽  
pp. 42-44
Author(s):  
Nurur Rahmy ◽  
Zairin Thomy ◽  
Yunita Yunita ◽  
Essy Harnelly
Keyword(s):  
Cell Biology ◽  
Block Design ◽  
Water Concentration ◽  
Coconut Water ◽  
Organic Substances ◽  
Artificial Medium ◽  
Dendranthema Grandiflora ◽  
Randomized Block Design ◽  
Treatment Observation

Artificial medium for in vitro culture is an alternative media to subtitute Murashige and Skoog (MS). Growmore added with organic substances as coconut water can be used as artificial medium. Coconut water can affect plant growth, so the research is to investigate the influence of coconut water in different concentration to chrysanth’s (Dendranthema grandiflora) growth should be done. The research was conducted in Laboratory of Molecular and Cell Biology, Department of Biology, Faculty of Mathematics and Natural Sciences, Syiah Kuala University Darussalam, Banda Aceh, from April until July 2013. The research was designed by using Randomized Block Design with sub sampling. Media act as group, while coconut water concentration as treatment. Observation was started from growing time up to a month after planting. The result showed that there was no significant different between using MS and artificial medium with different coconut water concentration to initiate shootlet.

scholarly journals Growth of Pepper Cuttings (Piper ningrum L.) at various type of Plant growth regulator

2019 ◽  
Vol 2 (1) ◽  
pp. 14-19
Author(s):  
K. Kasriana ◽  
Marlina Mustafa ◽  
Yolanda Fitria Syahri
Keyword(s):  
Plant Growth ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Leaf Growth ◽  
Block Design ◽  
Plant Materials ◽  
Randomized Block Design ◽  
Effective Combination ◽  
Soil Media

Pepper is an important crop in Indonesia because it is one of the country's foreign exchange sources because it is one of the export commodities. The availability of good plant materials will support increased production. Provision of growth regulators in vegetative propagation is very influential on the propagation of pepper plants. The purpose of this study was to determine the most effective combination of growth regulators for pepper cutting. This study was conducted using a randomized block design consisting of eight treatments namely Control (P1), metallic 2 mL L-1 water (P2), mastafol 2 mL (p3), Atonik 2 mL (P4), metallic 1 mL + Mastafol 1 mL (P5), metallic 1 mL + atonic 1 mL (P6), mastafol 1 mL + atonic 1 mL (P7), metallic 0.66 mL + Mastafol 0.66 mL + Atonic 0.66 mL (P8). Setek is grown on soil media: fuel husk: manure (2: 1: 1). The results showed that the best  Plant growth regulator  combination treatment for the growth of pepper cuttings was P7 (mastafol 1 mL L-1 water + atonic 1 mL L-1 water), which can be seen in the parameters of the number of roots, root length, root volume and number of shoots. The treatment of  Plant growth regulator  given did not significantly affect the character of leaf growth

scholarly journals YIELD OF INTERCROPPED LETTUCE AND CUCUMBER AS A FUNCTION OF POPULATION DENSITY AND CROPPING SEASON

2019 ◽  
Vol 32 (4) ◽  
pp. 943-951 ◽  
Author(s):  
ARTHUR BERNARDES CECÍLIO FILHO ◽  
BRAULIO LUCIANO ALVES REZENDE ◽  
ALEXSON FILGUEIRAS DUTRA
Keyword(s):  
Population Density ◽  
Negative Impact ◽  
Climatic Factors ◽  
Cropping Systems ◽  
Block Design ◽  
Vegetable Production ◽  
Lack Of Information ◽  
Randomized Block Design ◽  
Cropping Season ◽  
Lettuce Yield

ABSTRACT The possibility of increasing vegetable production per unit area is one of the advantages of the intercropping system. However, there is a lack of information about the effect of climatic factors and the management of different species on the viability of this production system. To this end, four experiments were carried out to evaluate the yield of intercropped lettuce and cucumber as a function of cropping season, cucumber population density, and lettuce transplanting time. Each experiment was conducted in a randomized block design with nine treatments arranged in a 2 x 4 + 1 factorial scheme, corresponding to two cropping systems (intercropping and monoculture), four transplanting times of 'Lucy Brown' lettuce (0, 10, 20, and 30 days after cucumber transplanting), and 'Hokushin' cucumber monoculture. The experiments were carried out in two seasons (August to November and February to May) and with two cucumber population densities (1.1 and 2.2 plants m-2). Total and commercial cucumber yields were not influenced by the presence of lettuce. However, regardless of cropping season, the presence of cucumber affected lettuce yield, with later transplanting corresponding to greater negative impact. Lettuce intercropped with cucumber at a density of 2.2 plants m-2 and grown from February to May did not reach commercial quality. The greatest efficiency of lettuce and cucumber intercropping was obtained by transplanting the two species on the same day in August, with cucumber at a density of 1.1 plants m-2.

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