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Birsa Agricultural University, Ranchi

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Subject: Agronomy × Author: Bhawna Bhagat × End date: 2023 × Start date: 2023 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    EFFICACY OF HERBICIDES ON CHICKPEA (Cicer arietinum L.) PRODUCTION
    (Birsa Agricultural University, Ranchi, 2023) Bhawna Bhagat; R.P. Manjhi
    Chickpea is one of the important legume crops occupying an area of more than 44 countries across five continents. An experiment was conducted at Research Farm of Birsa Agricultural University, Ranchi, Jharkhand during Rabi, 2021-2022 to quantify the response of pre and post emergence herbicides with the main emphasis to find out the effect of herbicides on growth, yield, weed dynamics and economics of chickpea. The experiment was laid out in randomized block design (RBD) and replicated thrice with the variety Birsa Chana-3 under irrigation condition. The treatments consists of oxyfluorfen 150 g/ha (T1), oxyfluorfen 250g/ha (T2), quizalofop-p-ethyl 100g/ha at 21 DAS (T3), Propaquizafop 100g/ha at 21 DAS (T4), topramezone 20.6g/ha at 21 DAS (T5), oxyfluorfen 150g/ha (PE) fb quizalofop-p-ethyl 100g/ha at 15-20 DAS (PoE) (T6), oxyfluorfen 150g/ha(PE) fb propaquizafop 100g/ha at 15-20 DAS (PoE) (T7), oxyfluorfen150g/ha (PE) fb topramezone 20.6g/ha at 14-21 DAS (PoE) (T8), imazethapyr 60 g/ha (PoE) at 21 DAS (T9),Manual Weeding (Weed free) at 25 DAS and 45 DAS (T10),Weedy Check(T11).The soil was clay loam, acidic in reaction(5.7),low in available nitrogen(247.4kg/ha), medium in available phosphorous(18.92kg/ha),medium in available potassium(145.30kg/ha),medium in organic carbon(4.5g/kg soil),low in available Sulphur(22.5kg/ha). Experimental field was infested with two categories of weeds i.e., narrow leaved weed and broad-leaved weeds covering four families. Altogether 8 weed species were recorded. Among narrow-leaf, Cyanodon dactylon, Avena fatua and Phalaris canariensis and in broad-leaf, Digera arvensis, Portulaca oleraceae, Phyllanthus niruri, Melilotus indica, Amaranthus virdis weeds were dominant. Results revealed that the application of oxyfluorfen 150 g /ha (PE) fb topramezone 20.6 g/ha at 14-21 DAS exhibited significantly lowest total weed density at 30 and 60 DAS (220.66 and 481.11/m2 respectively), total weed dry matter (6.65 and 25.30g/m2), highest weed control efficiency (59.19 and 66.11%) among herbicides and was significantly similar to two manual weeding at 25 DAS and 45 DAS. Similarly, application of oxyfluorfen 150g/ha (PE) fb topramezone 20.6g /ha at 14-21 DAS recorded highest growth parameter of chickpea viz. plant height (59.33 cm), dry matter accumulation at 90DAS (305.00g/m2), maturity (409.81g/m2), crop growth rate during 30-60DAS (5.36 g/m2/day), yield attributes viz. Number of branches/plant (21.77) and number of pods/branch(1.74),number of seeds/pod(1.78 seeds),number of pods/plant(36.98 pods), 1000 seed weight (290.5g), grain yield (19.15q/ha),straw yield (25.27q/ha) and net return (Rs. 63691/ha) among herbicides and was significantly similar to two manual weeding at 25 and 45 DAS. On the basis of one year of experimentation, it may be concluded that, application of Oxyfluorfen 150g a.i/ha (PE) fb Topramezone 20.6g a.i./ha at 14-21 DAS proved to be effective in supressing weeds and recorded maximum grain yield (19.15q/ha) and net return (Rs. 63691/ha) with B:C ratio (1.80) of chickpea under medium land situation in irrigated condition (3 irrigations) of Jharkhand.