Seasonal incidence of insect pests on field pea in relation to some abiotic factors in lower Gangetic plains of West Bengal

Roy, Souradip; Banerjee, Abhisek

doi:10.22271/09746315.2021.v17.i1.1437

Cited by 3 publications

(2 citation statements)

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“…Peak incidence of H. armigera on vegetable pea in Meerut was recorded during first week of February by Dhaka et al (2011). Roy and Banerjee (2021) reported that the gram pod borer population in field pea reached peak at nine weeks after sowing (WAS) which supports the present finding. But, Shantibala and Singh (2003), in Manipur, reported that the first seven days of March, 2001 and the last seven days of February, 2000, respectively, marked the peaks of the pod borer population in their two years of experiment.…”

Section: Pattern Of Incidence Of Larval Population Of Gram Pod Borer ...supporting

confidence: 89%

Population Fluctuation of Gram Pod Borer in Rabi Pulses of West Bengal

Bera,

Ray,

Banerjee

2023

Res. Bio.

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During the rabi season of 2021-22, a field research has been carried out at BCKV [District Seed Farm (AB Block)] Kalyani, Nadia, West Bengal for studying the pattern of incidence of gram pod borer or tomato fruit borer (Helicoverpa armigera Hubn.) in relation with prevailing meteorological parameters and to record the population fluctuation in four rabi pulse crops, viz., chickpea (var. KWR 108 and JAKI 9218), fieldpea (var. Rachna and VL 42), lentil (var. IPL 220 and L 4727) and grasspea (var. Prateek and Ratan). During the vegetative stage of the fieldpea, the Helicoverpa population first emerged, then gradually increased and declined near maturity; in lentil and grasspea it was recorded from flowering stage and persisted until maturity; in chickpea it was noticed from pod formation stage and continued up to maturity. None of the weather variables were significantly correlated with the Helicoverpa larvae population recorded on fieldpea and lentil while, regression studies denote that maximum (Max. T) and minimum (Min. T) temperature exhibited the most impact on the occurrence of Helicoverpa in grasspea and chickpea, respectively. The comparative study revealed that, Helicoverpa first appeared on lentil and field pea during the first week of January; then population appeared on grasspea during the end of second fortnight of January. Occurrence of the pest was noticed on lentil, field pea and grasspea in January and February and after that the population shifted to grasspea, fieldpea and chickpea during February to March. Chickpea was the most preferred crop as the highest population observed on this crop coinciding with pod formation stage.

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Section: Pattern Of Incidence Of Larval Population Of Gram Pod Borer ...supporting

confidence: 89%

Population Fluctuation of Gram Pod Borer in Rabi Pulses of West Bengal

Bera,

Ray,

Banerjee

2023

Res. Bio.

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“…15 November sown varieties have recorded 43.56% greater seed yield as compared to late sown crop. As can be shown in Table2, late sowings can cause fluctuation in not only seed yield but also stover yield and harvest index of the crop Roy et al (2009). observed a similar outcome in a delayed sowing crop trial in the same agroclimatic zone in West Bengal.…”

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confidence: 53%

Evaluation of Lentil Genotypes in Different Sowing Windows in the New Alluvial Zone of West Bengal

Bera¹,

Nath²,

Banerjee³

et al. 2023

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Background: Being a cool season crop, lentil is very sensitive to temperature during its growth stages. It is found that delayed harvest of the preceding crop which is most frequently rice causes the majority of the country’s lentil sowings to be postponed in India. As a result, the late-sown crop suffers during the seed-filling stage due to the rising high temperatures in most of its cultivated areas and results in lower yield. Therefore, there is a need to work out the optimum sowing time for realizing maximum yield potential as well as the selection of varieties suitable for normal as well as late sown condition of the crop. Methods: A field experiment was carried out in the new alluvial zone of West Bengal at the District Seed Farm of BCKV, Kalyani during the two subsequent rabi seasons (November-March) of 2019-2020 and 2020-2021 to examine the difference in yield between normal and late seeding conditions for various lentil cultivars. There were a total of ten genotypes evaluated, with each one being planted at one of two different times (15th Nov and 30th Nov). Result: The experimental findings revealed that lentil sown on 15th November recorded higher seed yield (2.34 t ha-1) compared to 30th November sown crop (1.63 t ha-1). Among the ten varieties, unreleased genotype C23E21 recorded the highest seed yield (2.25 t ha-1), followed by ILL 10802 (2.25 t ha-1). According to the results of this study, delaying the sowing window from the middle to the end of November can reduce yields by as much as 27.77%. Therefore, it is prudent to encourage the lentil farmers in the new alluvial zone region of West Bengal to sow their crops no later than the 15th of November of the Rabi season, to prevent a drop in production.

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Seasonal Incidence of Major Insect Pests of Pea in Malwa Region of Madhya Pradesh

Patnaik,

Gadekar,

Khandwe

et al. 2024

IJE

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The seasonal variation or dynamics of insect pests are major constraints in the production of field pea. This study revealed that the seasonal incidence of pests in the Malwa region of Madhya Pradesh, during 2021-22 in the rabi season is related to ecological factors such as temperature, rainfall, and relative humidity. Three major pests of field pea were recorded, viz., gram pod borer (Helicoverpa armigera Hubner), leaf miner (Phytomyza horticola Goureau) and pea aphid (Acyrthosiphon pisum Harris). The H. armigera infestation occurred during the vegetative to pod-forming or reproductive stage from 50th SMW of 2021 to 12th SMW of 2022 (Standard Meteorological Week), which shows a significant negative correlation with minimum temperature (-0.637*) and was significantly influenced by A. pisum and P. horticola during the seedling to maturity stage.

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Seasonal incidence of insect pests on field pea in relation to some abiotic factors in lower Gangetic plains of West Bengal

Cited by 3 publications

References 0 publications

Population Fluctuation of Gram Pod Borer in Rabi Pulses of West Bengal

Population Fluctuation of Gram Pod Borer in Rabi Pulses of West Bengal

Evaluation of Lentil Genotypes in Different Sowing Windows in the New Alluvial Zone of West Bengal

Seasonal Incidence of Major Insect Pests of Pea in Malwa Region of Madhya Pradesh

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