scholarly journals Stem borer incidence in maize

2020 ◽  
Vol 13 (2) ◽  
pp. 205-206
Author(s):  
M. Anuradha ◽  
Lavkumar Reddy
Keyword(s):  
Field Experiment ◽  
Stem Borer ◽  
Research Centre ◽  
Angular Transformation

Field experiment was conducted at Maize Research Centre, Rajendranagar by undertaking sowings at monthly intervals from January to December during two years 2013 and 2014. Observations on stemborer incidence was recorded at 45 DAG and subjected to analysis after angular transformation. June sown crop had lowest infestation of 2.83 per cent followed by December (3.35%) and May (3.69%) sown crops and all were significantly on par. Dead hearts were low in April, May and December sown crops i.e., 0.11 per cent, 0.15 per cent and 0.55 per cent, respectively and all were on par with each other. Highest per cent dead hearts were in Sep. sown crop (7.67%).

scholarly journals Seed yield, nutrient balance and economics of mungbean cultivation as influenced by different nutrients management under AEZ-28

2015 ◽  
Vol 40 (1) ◽  
pp. 77-93 ◽  
Author(s):  
MAH S Jahan ◽  
MAR Sarkar ◽  
NCD Barma ◽  
MNA Mondal ◽  
MNS Ferdousi
Keyword(s):  
Field Experiment ◽  
Seed Yield ◽  
Nutrient Management ◽  
Agricultural Research ◽  
Management Practice ◽  
Nutrient Balance ◽  
Research Centre ◽  
Agricultural Research Institute ◽  
Research Institute

A field experiment was conducted at Regional Wheat Research Centre of the Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh for 2 consecutive years during 2007 and 2008 to find out the optimum nutrient management practice for seed yield, nutrient balance and economics of mungbean. Twelve nutrient management treatments were tested in RCBD with 3 replications. Treatments were without CRI T1=HYG (0-24-40-48-24-3-1.2), T2=MYG (0-20-36-40-20-2-1), T3=IPNS (5000-9-37-36-21-3-1.2), T4=STB (0- 20-36-40-22-2-1), T5=FP (0-6-5-4-0-0-0), T6=CON (0-0-0-0-0-0-0) and with CRI T7=HYG+CRI, T8=MYG+CRI, T9=IPNS+CRI, T10=STB+CRI, T11=FP+CRI, T12=CON+CRI kg ha-1 CDNPKSZnB for mungbean. The maximum seed yield of mungbean was obtained from STB+CRI (1.57 t ha-1) followed by IPNS+CRI (1.54 t ha-1), STB (1.54 t ha-1), IPNS (1.52 t ha-1), HYG+CRI (1.44 t ha-1) and HYG (1.41 t ha-1) in 2007. Similar trend was found in 2008. Numerically higher yield and yield contributing parameters were noticed in CRI plots than without CRI. N and K balance were found negative in all the treatments. P, S, Zn and B balance were found positive in case of HYG, MYG, IPNS and STB along with or without CRI nutrient managements. While in case of FP and CON, the balance was shown almost negative. The maximum gross return and margin was obtained from STB+CRI followed by STB. Slightly higher BCR (3.00) was recorded from STB followed by STB+CRI (2.91).Bangladesh J. Agril. Res. 40(1): 77-93, March 2015

scholarly journals Efficacy of Different Coloured Sticky Traps Against Thrips of Chilli

2020 ◽  
Vol 8 (2) ◽  
pp. 187-190
Author(s):  
M.M. Hossain ◽  
K.M. Khalequzzaman ◽  
M.S. Alam ◽  
M.T.R. Mondal ◽  
M.M. Islam
Keyword(s):  
Field Experiment ◽  
Sticky Trap ◽  
Color Preference ◽  
Research Centre ◽  
Mass Trapping ◽  
Blue Color ◽  
Rabi Season ◽  
Beneficial Insects ◽  
Scirtothrips Dorsalis ◽  
Trap Color

The field experiment was conducted at Spices Research Centre, Shibganj, Bogura, Bangladesh during Rabi season of 2017-18 to study the color preference of Scirtothrips dorsalis in chilli. The treatments were T1= Blue trap @40 trap/ha; T2= Yellow trap @40 trap/ha; T3= White trap @40 trap/ha; T4= Green trap @40 trap/ha and T5= Pink trap @40 trap/ha.  Among the color traps used, at 35 days after installation (DAI) of trap blue color attracted highest (8.44 thrips/ sq. inch area of trap) number of S. dorsalis adults followed by white (5.43 thrips/ sq. inch area of trap), yellow (4.30 thrips/ sq. inch area of trap), green (3.52 thrips/ sq. inch area of trap) and pink (3.40 thrips/ sq. inch area of trap) color. Blue coloured sticky trap also attracted comparatively a smaller number of beneficial insects and can be used for relative estimate of S. dorsalis population and also for monitoring and mass trapping as a component of IPM program. Int. J. Appl. Sci. Biotechnol. Vol 8(2): 187-190

scholarly journals Rearing of Maize Stem Borer, Chilo partellus (Lepidoptera: Crambidae) under Laboratory Conditions

2021 ◽  
Vol 2 (3) ◽  
pp. 22-26
Author(s):  
Muhammad Ijaz ◽  
Keyword(s):  
Chilo Partellus ◽  
Insect Pests ◽  
Agricultural Research ◽  
Larval Instar ◽  
Stem Borer ◽  
Raw Material ◽  
Research Centre ◽  
Maize Production ◽  
Laboratory Conditions ◽  
The Mean

Maize is an important cereal crop grown for food, fodder and raw material throughout the world. It is rick source of proteins, carbohydrates and vitamins. Maize production is decreasing day by day due to attacked of more than 250 insect species and mites. Among insect pests, maize stem borer, Chilo partellus is most destructive pest for maize production. The rearing of maize stem borer, C. partellus was conducted under laboratory conditions in National Agricultural research Centre (NARC) Islamabad. The complete metamorphosis (egg, larva, pupa and adult) was recorded in C. partellus. The mean value of egg was 4.67 ± 1.09 days. There were six larval instar of C. partellus and total larval period was 18-48 days. The growth period of first, second, third, fourth, fifth and sixth larval instar was 3-6, 2-6, 3-7, 3-8, 3-9 and 5-11 days respectively on maize leaves. The mean average duration of pupa was 9.00±2.25 days. The female was long lived than male. The total developmental period from egg to adult was 30-65 days.

scholarly journals Efficacy of some insecticides and biopesticides for the management of white stem borer, Scirpophaga fusciflua Hampson in paddy

2018 ◽  
Author(s):  
Vikas Tandon ◽  
Ajai BSrivastava
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Untreated Control ◽  
Low Dose ◽  
Stem Borer ◽  
Control Measures ◽  
Effective Control ◽  
Viable Option ◽  
Efficacy Data

The field experiment was conducted on paddy at farmer’s field in the Kangra district, to find out the effectiveness and economically viable control measures for the management of white stem borer. Application of various insecticides viz. flubendiamide 48% SC @ 50 ml ha-1, rynaxypyr 20 SC @ 150 ml ha-1, dinotefuran 20 SG @ 200 g ha-1 , monocrotophos 36 SL @ 850 ml ha-1 and two biopesticides viz. melia 5% @ 2.5 L ha-1and eupatorium 5% @ 2.5 L ha-1, were tested along with untreated control. All the insecticidal treatments were found significantly superior to untreated control. Flubendiamide 48% SC @ 50 ml ha-1 and rynaxypyr 20 SC @ 150 ml ha-1 were found most promising with minimum dead heart and white ears. The data on dead heart, white ear incidence and grain yield showed that all the insecticides were found to have effective control against stem borer on paddy. Considering the efficacy data with very low dose of flubendiamide 48% SC proved to be better and economically viable option for management of stem borer.

scholarly journals Calibration and Validation of the Crop Growth Model DAISY for Spring Barley in the Czech Republic

2015 ◽  
Vol 63 (4) ◽  
pp. 1177-1186 ◽  
Author(s):  
Eva Pohanková ◽  
Petr Hlavinka ◽  
Jozef Takáč ◽  
Zdeněk Žalud ◽  
Miroslav Trnka
Keyword(s):  
Czech Republic ◽  
Field Experiment ◽  
Growth Model ◽  
Spring Barley ◽  
Crop Growth ◽  
Research Centre ◽  
Mean Bias Error ◽  
Crop Growth Model ◽  
The Czech Republic ◽  
Calibration And Validation

In this paper, the crop growth model DAISY for spring barley (cultivar “Tolar“) was calibrated and subsequently validated in three different soil-climate locations in the Czech Republic – Lednice (48°48'51'' N, 16°48'46'' E, altitude 180 m), Věrovany (49°27'39'' N, 17°17'42'' E, altitude 210 m) and Domanínek (49°31'42'' N, 16°14'13'' E, altitude 560 m). The calibration and validation were based on data from a multi-year field experiment from the Central Institute for Supervising and Testing in Agriculture and from a two-year field experiment in Domanínek (2011 and 2012) that was conducted by the Institute of Agrosystems and Bioclimatology in cooperation with the Global Change Research Centre AS CR. The calibration for Lednice, Věrovany and Domanínek was performed using 4 growth seasons from each station, the subsequent validation for Lednice and Věrovany was performed based on 3 growth seasons from each station, and that for Domanínek was based on 6 growth seasons. The value of the RMSE (root mean square error) statistic for flowering was 2 days for calibration and 4 days for validation on average; for maturity, the RMSE was 11 days for both calibration and validation. The average RMSE for the yields was 0.9 t·ha−1 for calibration and 1.6 t·ha−1 for validation. According to the statistical index MBE (mean bias error) for the flowering phenological phase, the crop growth model DAISY showed a delay of 2 days in both calibration and validation. There was also delay of 6 days in calibration and of 8 days in validation for maturity. According to the MBE, the crop growth model DAISY underestimates the yield by 0.2 t·ha−1 for calibration and underestimates the yield by 0.4 t·ha−1 for validation.

Seasonal incidence Efficacy of different novel insecticides and bio-pesticides against yellow stem borer Scirpophaga incertulus (Walker) on Rice

2019 ◽  
Vol 3 (02) ◽  
pp. 161-165
Author(s):  
Rajendra Singh ◽  
Anant Kumar ◽  
Anant Kumar ◽  
Nirvesh Singh ◽  
Amit . ◽  
...  
Keyword(s):  
Stem Borer ◽  
Control Agent ◽  
Basmati Rice ◽  
Research Centre ◽  
Scirpophaga Incertulas ◽  
Seasonal Incidence ◽  
Yellow Stem Borer ◽  
Control Application ◽  
Crop Research ◽  
Paddy Yield

The present investigation was carried out to study the efficacy of different novel insecticides and bio-pesticides against stem borer Scirpophaga incertulus (Walker) during kharif 2015-16 at Crop Research Centre of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut. Efficacy of newer insecticides (fipronil 5 SC, cartap hydrochloride 50SP,chlorpyriphos 20 EC, imidacloprid), one biopesticide (Neemarin 1500 ppm) and one bio-control agent (Trichogramma japonicum) were evaluated against yellow stem borer Scirpophaga incertulas (Walk.) in Basmati rice. The stem borer recorded as dead heart ear heads ranged from 4.85 to 10.55 per cent and white ear head showed that it was recorded on 38th standard weak. All the treatments were found significantly effective in reducing the infestation of stem borer and increasing the yield compared with control. Application of fipronil 5 SC was the most effective treatment in reducing the stem borer infestation at all observational interval resulting highest grain yield The results of paddy yield depicted in table 3, showed that the plots treated with fipronil 0.3 GR @ 25 kg/ha gave the highest yield (45.56 q/ha).

scholarly journals Screening of rice genotypes for leaf blast resistance under field condition

2020 ◽  
Vol 3 (2) ◽  
pp. 276-286
Author(s):  
Pratiksha Sharma ◽  
Prem Bahadur Magar ◽  
Suraj Baidya ◽  
Ram Baran Yadaw
Keyword(s):  
Field Experiment ◽  
Blast Resistance ◽  
Blast Disease ◽  
Disease Assessment ◽  
Research Centre ◽  
Leaf Blast ◽  
Rice Varieties ◽  
Rice Genotypes ◽  
Moderately Resistant ◽  
Resistant Genotypes

Blast, caused by Pyriculariagrisea (Sacc.) is the most destructive disease of rice in Nepal. To identify the sources of leaf blast resistance in rice genotypes, a field experiment was conducted under natural epiphytotic condition at National Plant Pathology Research Centre (NPPRC), Khumaltar, Lalitpur, Nepal during summer season in 2018 and 2019.A total of 128 rice genotypes in 2018 and 291during 2019 including resistant check (Sabitri) and susceptible check (Shankharika/Mansuli) were tested. Field experiment was conducted in single rod row design. Leaf blast disease assessment was done according to 0-9 scale. During 2018, 59 entries were highly resistant (Score 0), 34 resistant (Score 1), 26 moderately resistant (Score 2-3), 5 were moderately susceptible (Score 4-5), 4 susceptible (Score 6-7) and none of them were highly susceptible (Score 8-9) to leaf blast. Similarly, in 2019, 6 lines were highly resistant, 70 resistant, 196 moderately resistant, 15 lines were moderately susceptible, 4 susceptible and none of them were highly susceptible to the disease. Only, one genotype NR2179-82-2-4-1-1-1-1 (Score 1) was found resistant in both years. Similarly, genotype NR2182-22-1-3-1-1-1 (Score 2-3) was found moderately resistant. Some of the genotypes were found resistant in 2018 which become moderately resistant in 2019, they were NR2180-20-2-5-1-1-1-1, IR97135-8-3-1-3, IR98786-13-1-2-1, NR2181-139-1-3-1-1-1-1, and IR13F402. So, findings of these resistant and moderately resistant genotypes could be used in resistant source for the development of leaf blast resistant rice varieties through hybridization in future.

scholarly journals Effect of Different Sowing Dates for the Management of Chilli Pests

2019 ◽  
Vol 6 (2) ◽  
pp. 71-76
Author(s):  
Md. Motaher Hossain ◽  
K. M. Khalequzzaman ◽  
M. A. Muhd Islam ◽  
M. T. R. Mondal ◽  
S. N. Alam
Keyword(s):  
Field Experiment ◽  
Lower Incidence ◽  
Insect Pest ◽  
Research Centre ◽  
Rabi Season ◽  
Planting Time ◽  
Low Level ◽  
Sowing Dates ◽  
Fruit Borer ◽  
Minimum Number

The field experiment was conducted at Spices Research Centre, Shibganj, Bogra, Bangladesh during Rabi season of 2015-16 to assess the effect of varying sowing dates against insect pest of chilli. The treatments were T1= 30 August (1st sowing); T2= 15 September (2nd sowing); T3= 30 September (3rd sowing); T4= 15 October (4th sowing), T5= 30 October (5th sowing) and T6= 15 November (6th sowing). Sowing was done at 15 days interval from August to November in the experimental field. The results showed that the maximum mean aphid (9.27/leaf), thrips (10.77/leaf), mite(11.51/leaf) and fruit borer population like H. armigera and S.litura larvae (8.25 and 6.74/plant, respectively) were found in 15 November sowing and minimum number of those insect pest were present in 30 August sowing. Red ripe chilli yields were also found to differ in descending order as follows: 30 August (13.05 t/ha)> 15 September (12.70 t/ha)> 30 September (10.30 t/ha)> 15 October (8.41 t/ha)> 30 October (5.20 t/ha)> 15 November (3.10 t/ha). It was inferred that early sowing (30 August or 15 September) resulted in lower incidence of aphids, thrips, mite and fruit borer. Such low level of insect pest caused less crop injury which resulted in enhancing the red ripe yield of chilli. So, it is suggested that for early sowing of winter chilli, the appropriate planting time may be 30 August to 15 September.  

A quantitative approach of the slake test for assessing soil structural stabilty

2020 ◽  
Author(s):  
Frédéric Vanwindekens ◽  
Brieuc Hardy ◽  
Christian Roisin ◽  
Fabienne Delporte
Keyword(s):  
Organic Matter ◽  
Field Experiment ◽  
Soil Sample ◽  
Management Practices ◽  
Soil Management ◽  
Conservation Agriculture ◽  
Research Centre ◽  
No Tillage

<p>Soils are at the heart of agro-ecosystems. In various parts of Europe, soils, their structure and function are under pressure from intensive farming practices and global changes. The main consequences are a loss of biodiversity, a decrease in organic matter content, an increase in their susceptibility to erosion. In this context, some farmers are adopting innovative practices to increase the quality of their soils. Among innovative practices, those related to conservation agriculture are particularly highlighted.</p><p>Conservation Agriculture practices are based on the threefold principles of (i) minimizing mechanical soil disturbance (e.g. no tillage), (ii) permanent soil cover, and (iii) diversification of crop species grown in the plots. These practices are encouraged by the farmers who adopt them and some stakeholders (ASBLs, advisors, etc.). Some related practices raise questions (use of herbicides) and the effects of the practices on the soil are subject to debate within the scientific communities.</p><p>The physical properties of soils are traditionally estimated by a series of laboratory tests that are resource-, time- and money-intensive. We propose to present a new pragmatic approach to assess the functioning and quality of agricultural soils, the 'slake test'. In the development phase, this approach has been tested for contrasting fertilisation and tillage modalities in various long-term trials at the Walloon Agricultural Research Centre (CRA-W).</p><p>A slake test is a simple and visual experiment shown by promoters of conservation agriculture. It consists of immersing a metal basket containing a soil sample and observing how this sample decomposes. It is done qualitatively, in two glass cylinders to compare soil samples from ploughed and no-till plots. Although this test is a quick way to assess the structural stability of a soil, its protocol has not been formalized and its results objectified by a quantitative method. We developed an original approach, the ©QuantiSlakeTest, aimed at continuously measuring the disintegration of the soil sample.</p><p>This original experimental design was first tested by comparing two contrasted treatments of a long term field experiment in Chastres (Belgium). This field experiment was conducted between 2004 and 2018 by the CRA-W for comparing soil management practices. Samples were taken from plots of treatment T (tillage) and treatment NT (no-tillage) in five repetitions (10 plots). In each plot, seven samples were taken in the superficial layer using Kopecky rings. The samples were dried 48 hours at 50°C before being tested. </p><p>The application of ©QuantiSlakeTest highlights significant differences between tilled and non tilled plots. After one minute, the relative residual weight are significantly different between treatments (T: 0.76±0.16, NT: 0.95±0.06, p<0.001). At stabilisation, after 20 min, samples from tilled plots have lost more than 50% of their weight, while those from no-tilled plots have lost less than 30% (T: 0.49±0.32, NT: 0.71±0.22, p<0.001).</p><p>These early results confirm that ©QuantiSlakeTest is a credible approach for assessing the effect of soil management practices on soil stability, in controlled experimental conditions. We are now finetuning the protocol, trying the approach with room temperature dried samples and comparing other modalities (fertilisation, organic matter amendment).</p>

Performance of sorghum genotypes under zero tillage conditions in rice fallows with reference to stem borer, Chilo partellus (Swinhoe)

ENTOMON ◽  
2019 ◽  
Vol 44 (1) ◽  
pp. 57-64
Author(s):  
P. Yogeswari ◽  
C. Sandhya Rani ◽  
G. Ramachandra Rao
Keyword(s):  
Field Experiment ◽  
Chilo Partellus ◽  
Significant Positive Correlation ◽  
Stem Borer ◽  
Leaf Damage ◽  
Zero Tillage ◽  
Tunnel Length ◽  
Positive Correlation ◽  
Sorghum Genotypes

A field experiment was carried out to screen the sorghum genotypes against stem borer in rice fallow under zero tillage condition. Based on mean stem tunnel length the genotypes were categorized as least susceptible (0-5 cm), moderately susceptible (5-10 cm), highly susceptible (>10 cm). The resistant check CSH 16 (C) found as least susceptible with 4.65 cm, whereas, NTJ-2 (C), NLCW-6 and N-14 were found to be highly susceptible as they recorded 10.45, 10.46 and 11.44 cm mean stem tunnel length respectively. The remaining genotypes found as moderately susceptible with 6.60 to 9.84 cm mean stem tunnel length. There is non-significant positive correlation between numbers of larvae with leaf damage, dead hearts stem tunneling, white ears and per cent chaffy grains, but it was negative with tiller damage.

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