PENGARUH APLIKASI INSEKTISIDA BERBAHAN AKTIF ASETAMIPRID TERHADAP ULAT PENGGULUNG PUCUK (Cydia leucostoma) PADA TANAMAN TEH

Tea Shoot roller (Cydia leucostoma Meyrick) is one potential pests that attack tea shoot, mainly on the new tea shoot after prunning, it caused plant growth becomes stunted. One of control that can be done is by application of insecticides. To determine the effectiveness of insecticide Acetamiprid, the trial has been conducted at Block A7, Gambung field trial, Kabupaten Bandung, during ± 3 months, from October up to December 2016. The trial was designed in Randomized Complete Block Design (RCBD) with five treatments and four replications. The treatment tested covered insecticide Asetamiprid 30% at 1; 0.75; 0.50; 0.25 l/ha and control. The insecticide was sprayed six times using knapsack sprayer one day after plucking, with one week interval. Tea shoot roller attack intensity was observed weekly at the time of plucking. Shoot production, phytotoxicity, as well as rainfall were also observed as a supporting data. The results showed that after three times of spraying, insecticide Asetamiprid 30% at all formulation doses tested could effectively suppress the attack intensity of tea shoot roller. The last observation result, after six times spraying, revealed that the average efficacy level relatively high, i.e. 73,24%. Therefore, for controlling tea shoot roller on tea it could be recommended the use of insecticide Asetamiprid 30%.

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Pengaruh Kombinasi Aplikasi Jamur Paecilomyces fumosoroseus, Lem Perangkap, dan Insektisida Imidakloprid terhadap Empoasca sp.

Jurnal Agro ◽

10.15575/1229 ◽

2017 ◽

Vol 4 (1) ◽

pp. 32-39

Author(s):

Fani Fauziah ◽

Odih Sucherman

Keyword(s):

Combination Treatment ◽

Control Method ◽

Block Design ◽

Tea Plant ◽

Sticky Trap ◽

Paecilomyces Fumosoroseus ◽

Combination Treatments ◽

Shoot Production ◽

Tea Shoot ◽

Attack Intensity

In order to obtain an effective and efficient control method in integrated pest management, a research to know the effectiveness of combination treatments on Empoasca sp. on tea plant had been conducted. The trial was carried out at Gambung Experimental Station (1,250 masl) and designed in Randomized Complete Block design (RCB), with 8 treatments and 3 replications. The treatment tested comprised with A. Paecilomyces fumosoroseus (Pfr); B. sticky trap (ST); C. imidacloprid (I); D. Pfr + ST; E. Pfr + I; F. ST + I; G. Pfr + ST + I; and H. control. Pfr multiplied in rice medium 2.5 kg ha-1 and imidacloprid 0.125 L ha-1 were sprayed, while sticky trap was set in the middle of 5 m x 5 m plot. The parameters observed were attack intensity of Empoasca sp., population of Empoasca sp, and tea shoot production. The results showed that after 3 times application of all treatments revealed a decrease in the attack intensity of Empoasca sp. After the fourth application, combination treatment of sticky trap (ST) + imidacloprid (I) consistently showed higher efficacy than other treatments. In the sixth observation, the average of Empoasca sp. attack intensity of combination treatment (ST + I) was 15.95% with an average population of 0.67 Empoasca sp. per plot. In the meantime, tea shoot production was 33.64% higher compared with control.

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Physiological attributes of mungbean (Vigna radiata L.) influenced by different sources of nutrients (NPK) in Madhupur tract region of Bangladesh

Journal of Science Technology and Environment Informatics ◽

10.18801/jstei.110121.74 ◽

2021 ◽

Vol 11 (01) ◽

pp. 736-748

Author(s):

M. M. Hossain ◽

◽

S. Yesmin ◽

M. Z. Islam ◽

M. A. Hossain ◽

...

Keyword(s):

Plant Growth ◽

Seed Yield ◽

Block Design ◽

Growth And Yield ◽

Higher Plant ◽

Npk Fertilizers ◽

Straw Yield ◽

Combined Application ◽

Randomized Complete Block Design ◽

Different Sources

An experiment was conducted at the Sher-e-Bangla Agricultural University farm from April to June 2017 in Kharif season to evaluate the performance of two mungbean varieties under different NPK fertilizers doses in field conditions. The experiment was laid out in Randomized Complete Block Design (RCBD), comprising six treatments with three replications. In the experiment, varieties used were BARI mung-6 and BARI mung-5 and the combination of the treatment were T0 = (control), T1 (10-40-25 NPK kg ha-1), T2 (10-60-45 NPK kg ha-1), T3 (20-50-35 NPK kg ha-1), T4 (30-40-25 NPK kg ha-1) and T5 (30-40-45 NPK kg ha-1), respectively. Mungbean cultivars responded noticeably to the supplementary NPK fertilizers as the crop characters were significantly influenced by different levels of NPK fertilizers. Data were recorded on plant height, leaves plant-1, branches plant-1, pods plant-1, seeds pod-1, 1000-seed weight, seed, and straw yield at different days after sowing. Of the two varieties, BARI mung-6 gave the highest seed yield (1.72 t ha-1) next to the higher plant growth and straw yield On the contrary, BARI mung-5 cultivar produced the lowest seed yield (1.57t ha-1), plant growth, and straw yield. The results showed that T3 (20-50-35 NPK kg ha-1) treatment was the best treatment as regards plant growth and yield parameters. The highest seed yield was produced by treated plot T3 (20-50-35 NPK kg ha-1) over the untreated control plot, T1, T2, T4, and T5, respectively. As for the combined effect, V1T3 (BARI mung-6 and T3 = 20kg N + 50kg P + 35kg K ha-1) performed the best results in all growth and development characters. Therefore, the combined application of 20-50-35 kg NPK ha-1 might be considered to be found optimal to get a considerable seed yield of mungbean variety BARI mung-6.

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Growth, mineral composition, fruit yield, and mycorrhizal colonization of feijoa in response to lime and phosphorus application

Pesquisa Agropecuária Brasileira ◽

10.1590/s0100-204x2016000800006 ◽

2016 ◽

Vol 51 (8) ◽

pp. 942-949 ◽

Cited By ~ 1

Author(s):

Gilberto Nava ◽

Karine Louise dos Santos ◽

Murilo Dalla Costa ◽

Marlise Nara Ciotta

Keyword(s):

Plant Growth ◽

Mineral Composition ◽

Block Design ◽

Mycorrhizal Colonization ◽

Fruit Yield ◽

Tree Canopy ◽

Phosphorus Fertilization ◽

Randomized Complete Block Design ◽

Acca Sellowiana ◽

Phosphorus Application

Abstract: The objective of this work was to investigate the effect of liming and phosphorus fertilization on the growth, mineral composition of the leaves, fruit yield, and mycorrhizal colonization of young feijoa (Acca sellowiana) plants. Treatments consisted of four liming levels - 0, 25, 50, and 100% of the dose required to raise the soil pH to 6.5 - and of five levels of P - 0, 60, 120, 180, and 240 kg ha-1 P2O5 -, placed in a randomized complete block design, in a split-plot arrangement, with three replicates. The orchard was established in 2010 with the Helena cultivar. In 2012, 2013, and 2014, plant growth was evaluated by measuring trunk perimeter, plant height, and tree canopy width. Mineral composition of the leaves, regarding P, N, K, Ca, and Mg contents, was assessed annually. Mycorrhizal colonization was evaluated in 2012, and fruit yield was determined in 2014. No interaction was observed between the studied factors. P contents had no effect on the evaluated variables. Liming, however, increases plant growth, mycorrhizal colonization, fruit yield, and Ca and Mg leaf contents, besides reducing K leaf contents.

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EFFECT OF TRINEXAPAC-ETHYL ON GROWTH AND YIELD OF SUGARCANE

Planta Daninha ◽

10.1590/s0100-83582015000300011 ◽

2015 ◽

Vol 33 (3) ◽

pp. 491-497

Author(s):

A. T. FARIA ◽

E. A. FERREIRA ◽

P. R. R. ROCHA ◽

D. V. SILVA ◽

A. A. SILVA ◽

...

Keyword(s):

Plant Growth ◽

Growth Regulators ◽

Plant Growth Regulator ◽

Block Design ◽

Growth And Yield ◽

Bud Burst ◽

Root Volume ◽

Factor B ◽

Randomized Complete Block Design ◽

Sugarcane Yield

ABSTRACT Growth regulators can be used to further retard or inhibit vegetative growth. In this sense, the objective of this study was to determine the effects of age and number of trinexapac-ethyl applications on the growth and yield of sugarcane. The experiment was in a randomized complete block design with four replications. The treatments were in a 3 x 2 + 2 factorial arrangement, where factor A corresponded to the application times of the plant growth regulator (120, 200 and 240 days after bud burst (DAB) of sugarcane) and factor B to the number of applications (one or two applications). In addition, two controls (one with three applications and another application without the regulator) were added. The application of trinexapac-ethyl decreased the number and the distance between buds, height, root volume and sugarcane yield. The sequential application (2 or 3 times) induced an increase in stem diameter and three applications of the product increased the number of plant tillers. The use of growth regulators applied at 240 DAB has reduced plant height, however without changing the number of buds. It can be concluded that trinexapac-ethyl changes sugarcane growth and yield, regardless of season and number of applications.

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Growth Performance of Lettuce Using Fermented Products as Organic Fertilizers

Aloha International Journal of Multidisciplinary Advancement (AIJMU) ◽

10.33846/aijmu10303 ◽

2019 ◽

Vol 1 (3) ◽

pp. 65

Author(s):

Kareen Lynn E. Negado

Keyword(s):

Growth Performance ◽

Block Design ◽

Organic Fertilizers ◽

Control Groups ◽

Lettuce Seeds ◽

Randomized Complete Block Design ◽

Number Of Leaves ◽

The Mean ◽

And Control ◽

Fermented Products

This study evaluates the growth performance of lettuce (Lactuca sativa L.) utilizing various fermented products as organic fertilizers. Growth performance is determined through the plant’s weight and leaves and significant differences in growth among various treatments: (a) fish trash, (b) scrap seaweeds, (c) kangkong, and control groups urea (positive) and water (negative) was also determined. Kangkong leaves are fermented for 10 days, fish trash for 14 days and 1 month for seaweeds. Lettuce seeds are sown before transplanting (15 days after germination) into pots and placed in raised beds. Randomized complete block design is utilized in the experiment. Growth performance is measured through the number of leaves 10, 20, and 30 days after transplant and mass of plant upon harvest. After 30 days, the lettuce was harvested. Based on the findings, the soil and fermented products are acidic and the needed organic matter for optimum growth of lettuce are not sufficient as well as some nutrients of the fermented products. Among the organic fertilizers, kangkong at 30 ml performs best in terms of the growth performance of lettuce. Urea performs best in terms of the mass upon harvest. Significant differences exist in the mean number of leaves of lettuce treated with various amounts of organic fertilizers with the plants that receive urea. Lettuce produce more number of leaves and with the highest mass upon harvest when treated with urea compared with organic fertilizers applied after 30 days from transplant. Keywords: fermented kangkong; fish trash; growth performance; lettuce; scrap seaweeds

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PENGARUH PENYARUNGAN DENGAN BERBAGAI KETEBALAN PLASTIK DAN DIAMETER BUAH TERHADAP SERANGAN PENGGEREK BUAH KAKAO Conopomorha cramerella (Snellen) (LEPIDOPTERA : GRACILLARIDAE)

AGRICA ◽

10.37478/agr.v7i2.412 ◽

2020 ◽

Vol 7 (2) ◽

pp. 142-153

Author(s):

NI MADE DELLY RESIANI

Keyword(s):

Field Trial ◽

Control Measure ◽

Block Design ◽

Medium Size ◽

Pod Borer ◽

Randomized Complete Block Design ◽

Rot Disease

This research is aimed to find out the preference of cocoa pod borer to diameter, biophysical, and biochemistry cocoa pod; the percentage of infested pods, percentage of seed damaged, and percentage of yield lost. In addition, this research is also aimed to assess the effect of plastic thickness on cacao pod rot disease, the effect of sheathing on the black ant and mealybug populations on pods. This research was conducted at Selemadeg District, Tabanan Regency from October 2009 until January 2010. The field trial was arranged into randomized complete block design (RCBD) by 15 treatments were sheathing with various thickness of plastics (S0-S4) and cocoa pod diameters (B1-B3). The results indicated that, based on the percentage of the infested pod, cocoa pod borer has preferred the fruit with diameter > 4.5-7.5 cm. This condition may be contrasted, the smallest pod size (3,5-4,5 cm) was the healthiest pod, even though it contains more nutritionally compound. The smaller pod rot disease in red and green types. Sheathing by plastic of > 0.02 mm thick in medium size of pods was the most effective to prevent cocoa pod borer infestation. Sheathing with plastic was not affecting the population of both black ants and mealy bugs. Based on these results, it can be suggested that sheathing with plastic of > 0.02 mm thick on medium size of the pod is promising control measure to prevent yield lost caused by cocoa pod borer and cocoa pot rot disease.

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Post-emergence selectivity of metribuzin to carrot

Revista CERES ◽

10.1590/0034-737x201865040003 ◽

2018 ◽

Vol 65 (4) ◽

pp. 314-320

Author(s):

Núbia Maria Correia ◽

Agnaldo Donizete Ferreira de Carvalho

Keyword(s):

Plant Growth ◽

Chemical Treatment ◽

Growth Stage ◽

Block Design ◽

Greenhouse Experiment ◽

Application Time ◽

Application Timing ◽

Time Of Application ◽

Randomized Complete Block Design ◽

Two Stages

ABSTRACT When selecting a weed chemical treatment (herbicide, product mixtures, dose, or application timing), an important issue to consider is its selectivity to the crop of commercial interest. The objective of this study was to evaluate the selectivity of the herbicide metribuzin to carrot plants as a function of genotype, dose, and plant growth stage at the time of application. Two experiments were carried out, one in a greenhouse and another in the field. The greenhouse experiment was arranged in a completely randomized, 5 x 2 x 3 factorial design, with four replications. Metribuzin doses (0, 72, 96, 144, and 192 g ha-1) were sprayed on plants with 2-3 and 4-5 true leaves of the cultivars Maestro, BRS Planalto, and Verano. Cultivar Maestro was cultivated in the field in a 2 x 5 factorial experiment in randomized complete block design, with four replications. Carrot plants, at two stages of development (2 and 5 true leaves), were sprayed with the same doses of metribuzin applied in the greenhouse experiment. Metribuzin, regardless of application time and dose tested, was selective for cultivars BRS Planalto and Verano (greenhouse) and Maestro (both greenhouse and field), without reduction in quality and yield of roots.

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79 Seeing the whole picture: Utilizing GPS technology to determine distance and time calves devote to walking post-weaning

Journal of Animal Science ◽

10.1093/jas/skz122.078 ◽

2019 ◽

Vol 97 (Supplement_2) ◽

pp. 43-44

Author(s):

Kirsten Nickles ◽

Alejandro E Relling ◽

Anthony Parker

Keyword(s):

Block Design ◽

Repeated Measurements ◽

Walking Distance ◽

Beef Industry ◽

Positioning Systems ◽

Gps Technology ◽

Animal Activity ◽

Randomized Complete Block Design ◽

Global Positioning ◽

And Control

Abstract Common weaning practices in today’s beef industry involve discontinuation of the cow-calf social and nutritional bond. When this bond is discontinued, atypical behaviors of walking and vocalizing are immediately observed in the calf that negatively affect calf welfare. Global positioning systems (GPS) provide an opportunity to quantify the effects of animal activity on welfare. Utilizing GPS technology, we are able to determine total distance walked, speed, total time walking, or total time not walking and the interactions with calf production. Thus, the objective of the present study was to evaluate the effects of a familiar trainer animal on calf production during weaning and more specifically, common weaning behaviors such as walking utilizing a Garmin® product. A total of 80 Angus x Simmental heifer calves were used in this study. In all four replications, heifer calves were allotted to each treatment group (n = 10), trainer animal or control (TR, CON) on the day of weaning. Calves in the TR group were placed on pasture at weaning with the familiar trainer animal, and control calves were placed in a similar size pasture without a trainer animal. Each calf was also fitted with their own GPS collar that recorded on days 0, 7, and 14 relative to initiation of the study for a full 24 hours before removal. Data were analyzed as a randomized complete block design with repeated measurements (SAS 9.4). Placing calves with a familiar trainer animal decreased the distance calves walked (P = 0.001) as well as the amount of time calves were walking (P = 0.001). Placing a familiar trainer animal with calves at weaning, therefore, has an effect on walking distance and amount of time calves devote to walking.

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Evaluation of the effectiveness of different herbicides on weed invasion in the fields of triticale

Journal of Plant Protection Research ◽

10.2478/v10045-012-0070-z ◽

2012 ◽

Vol 52 (4) ◽

pp. 435-439 ◽

Cited By ~ 2

Author(s):

Parviz Sharifi Ziveh ◽

Vahid Mahdavi

Keyword(s):

Block Design ◽

Control Treatment ◽

Wild Oat ◽

Control Methods ◽

Dual Purpose ◽

Weed Invasion ◽

Barnyard Grass ◽

Randomized Complete Block Design ◽

Herbicide Use ◽

And Control

Abstract One of the factors limiting crop growth is weeds. The weeds lead to a reduced performance of the crops. Chemical control methods are considered appropriate for controlling weeds. Therefore, in the fight to control weeds in triticale, the performance of the dual-purpose herbicide sulfosulfuron(Apirus®), mesosulfuron + idosulfuron(Atlantis®), metsulfuron methyl+sulfosulfuron(Total®) with surfactant and isoproton + diflufenican(Panther®) from the sulfonylurea group, and narrow leaf herbicides clodinafobpropargyl( Topik®), pinoxaden(New Axial®), diclofop-methyl(Iloxan®), pinoxaden + clodinafob-propagyl (Traxos ®), fenoxaprop-pethyl + mefen-pyper-d-ethyl(PumaSuper®), tralkoksidim(Grasb®) with 1 liter oil, flam-prop-m-isopropyl(Suffix BW®), and control treatment without herbicides were evaluated. The test was carried out in a randomized complete block design with four replications. Spraying was carried out using a back sprayer. For evaluation of ocular damage, the European Weed Research Council (EWRC) standard method was used. According to the performed studies, the narrow leaves of wild oat and barnyard grass were the dominant weeds. Results showed that all herbicide, except the herbicide tralkoksidim, were effective in weed control. The triticale yield was maintained with the use of these herbicides and none of herbicide had an adverse effect on the crop. In the first weeks of herbicide use, the triticale leaves appeared pale but this problem resolved over time. It seems that the herbicides discussed in this paper can be used on the triticale plant.

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The response of Stecklings Age and Plant Spacing on Carrot Seed Quality and Production

Journal of Tropical Horticulture ◽

10.33089/jthort.v3i2.53 ◽

2020 ◽

Vol 3 (2) ◽

pp. 71

Author(s):

Fatiani Manik ◽

Rasiska Tarigan ◽

Susilawati Barus

Keyword(s):

Seed Production ◽

Field Trial ◽

Seed Quality ◽

Block Design ◽

Plant Spacing ◽

Randomized Complete Block Design ◽

Two Factors ◽

Carrot Seed

The quality of seed needs to be considered in carrot seed production to maintain its productivity. The research aims to find out the response of stecklings age and plant spacing on carrot seed quality and production. This research was held on July 2018 – April 2019 in Berastagi field trial (1340 m MSL). The experiment used Randomized Complete Block Design (RCBD) with two factors, i.e., stecklings age (2 and 3 months) and plant spacing (25, 50, 75, and 100 cm), replicated four times (32 experiment units), 10 plants from each experiment units were taken as samples. The result showed that stecklings age and plant spacing were affected to plant vegetative and generative stages. The combination of 2-month stecklings and 50 cm plant spacing increased the number of secondary umble, if compared to cultivation, which was generally used by the farmer (3-month stecklings and 25 cm plant spacing). The best quality of carrot seed was obtained from the combination of 3-month stecklings and 50 cm plant spacing.

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