Integrated weed management in cotton under irrigated condition of middle Gujarat

Chaudhari, D. D.; Patel, H. K.; Mishra, Aakash; Patel, V. J.; Patel, B. H.; Patel, R. B.; Motka, GN

doi:10.5958/0974-8164.2017.00040.5

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…There was no yield loss in cotton using post-emergence application of pyrithiobac at 105 g ha -1 reported Allen et al, (1997). Chaudhari et al, (2017) observed that pre-emergence application of pendimethalin 1000 g ha -1 fb hand weeding twice at 20 and 50 DAS, and pyrithiobacsodium + quizalofop-p-ethyl (62.5 + 50 g ha -1 ) as post-emergence fb directed spray of glyphosate 2000 g ha -1 at 60 DAS recorded significantly lower weed dry biomass as well as higher seed cotton yield and benefit cost ratio as compared to rest of the treatments. The weed control efficiency of these treatments proved to be 90 and 86% during 2014 and 2015 respectively.…”

Section: Post-emergence Herbicides For Cottonmentioning

confidence: 94%

Integrated Weed Management in Bt-Cotton Under Semi Arid Conditions – A Review

Singh¹,

Garg²,

Satpal³

et al. 2022

JART

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Cotton is one the major Kharif cash crop of India and is also known as ‘White Gold’ or ‘King of fibres’. Being a rainy season, long duration, wide spaced and slow growing crop at initial stage, it is highly sensitive to weed competition. The critical period of crop-weed competition is 15 to 60 days after sowing and during this period the crop suffers from heavy losses in seed cotton yield. Weeds are the major constraints that reduce the crop yields since they compete for the nutrients, moisture, light and space. The losses caused by weeds in cotton ranges from 50 to 85 percent depending upon the nature and intensity of weeds in the field. The most common practices adopted by the farmers are manual weeding and inter-culture operation. But during critical period of crop-weed competition, the non-availability of labour, high wages of labour and wet field conditions, leads to ambiguous conditions for cotton growers. Due to delay in inter-culture operations in the crop, ineffectual results produced are clearly reflected in final yield. Thus, timely management of weeds through physical, mechanical, biological and chemical means needs to be ensured for achieving the higher cotton productivity. Physical and mechanical methods are widely used but in case of biological weed control, limited options are available. Chemical weed management is the better choice of the farmer being economical, quick responsive and suitable to the prevailing conditions. Chemical weed control in cotton by using suitable pre and post emergence herbicides during critical period of crop-weed competition gives a way out to handle the situation and to realise higher productivity. Further, the integration of all the weed management practices in the form of IWM needs to be explored more and more being economically viable, ecologically sustainable and locally available and user friendly techniques. Realization of higher cotton yield and fetching better remunerations mainly depends on an integrated weed management approach that also recognizes the adoption of location specific cultivar.

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Section: Post-emergence Herbicides For Cottonmentioning

confidence: 94%

Integrated Weed Management in Bt-Cotton Under Semi Arid Conditions – A Review

Singh¹,

Garg²,

Satpal³

et al. 2022

JART

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“…Efficacy of the pre-emergence herbicides alone failed to contribute much in weed control because on fact that, application of herbicide inhibited the germination and emergence of weeds during initial growth stage of crop only but at later stages, these herbicides dissipated and deactivated in the soil and next flush of weeds appeared in such plots. Effectiveness of various herbicides against different weed species in okra crop have been reported by many workers including Sharma and Patel (2011), Mathukia et al (2018) and Dhivya et al (2021).…”

Section: Effect On Weedsmentioning

confidence: 99%

Impact of weed management practices on weeds and okra crop

T.U. PATEL,

M.J. ZINZALA,

H.M. PATEL

et al. 2022

IJA

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A preliminary study was conducted during the summer of 2014 and 2015 at the N.M. College of Agriculture, Navsari Agricultural University, Navsari, Gujarat, India to evaluate the 10 treatments of weed-management, i.e. stale seedbed, pre- and post-emergence herbicides alone and in combination, integrated weed-management and hand-weeding in summer okra [Abelmoschus esculentus (L.) Moench]. Almost 73.2% of weed infestation was dominated by grasses and sedges, followed by broad-leaf weeds (26.8%). Uncontrolled weed growth caused significant reduction in mean green pod yield of okra by 67%. Weed-free plot [3 hand-weedings (HW) at 20, 40 and 60 days after sowing (DAS)] showed the maximum weed-control efficiency (WCE) (88.4%), resulting in higher green pod yield (16.8 t/ha) and net returns (`105,233/ha). Statistically at par yields were also obtained from plots treated with not incorporated and 2 HW at 20 and 40 DAS (14.3 t/ha) and pendimethalin 1.0 kg/ha followed by (fb) quizalofop-ethyl 0.04 kg/ha at 30 DAS (13.9 t/ha) with net returns of `83,442 and `82,277/ha respectively. Application of pendimethalin 1.0 kg/ha (pre) fb quizalofop ethyl 0.04 kg/ha at 30 DAS supressed the weeds effectively (71.3% WCE) which not only reduced the drudgery of farm labour but also found practically more convenient and economically feasible weed-management option for higher production of okra fruit crop.

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“…Furthermore, growing legumes or an intercrop in between the cotton rows are known to improve the soil physical (Blaise et al, 2021a) and biological properties (Blaise et al, 2021b) leading to better soil health. Similarly, integration of stale seed bed technique and leguminous cover crops like Vigna unguiculata or Crotalaria juncea resulted in better weed smothering with reduced weed pressure and N contribution of 48 and 57 kg ha − 1 respectively (Nalayini et al, 2023). However, to maximize productivity per unit area, high density planting systems (HDPS), with intensi cation of plant populations greater than 1,11,000 plants per hectare, was proposed for the region in order to obtain high cotton productivity (Venugopalan et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Indices for measuring system efficiency of American cotton and legume intercropping in additive series of 1:1 ratio at rainfed vertisols

Manikandan

Blaise²,

Nalayini³

et al. 2023

Preprint

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Background and Aims Cotton (Gossypium hirsutum L.) is grown at wide-row spacing and offers an opportunity to intercrop. We hypothesized that including a legume may improve the soil fertility and the system productivity. However, less is known about intercropping legume on rainfed vertisols. Methods During initial two years (2015–2017) field experiments were conducted for identifying efficient nitrogen (N) fixing legume [Blackgram (Bg), green gram (Gg), cowpea (Cp), soybean (Sb), cluster bean (Cb), pigeon pea (Pp), dolichos (Dc) and groundnut (Gn)] with high-density planting system (HDPS). Based on these results, a further study for three years (2018–2020) was conducted with the short, medium and long duration of shortlisted legumes to determine economic and operational feasibility. Results Legume intercrops reduced the seed cotton yield. However, cotton equivalent yield results showed that productivity of the cotton + cotton (Cc) and sole cotton (Cs), is lower (63, 30%) than legume intercropped cotton (CLi) excluding pigeon pea (Pp). The positive and higher values of land equivalent ratio (1.40–1.78) indicated the benefits of intercropping systems than of Pp (0.74 − 0.69) or Cs (1.00). Legumes also improved the area time equivalent ratio of 14–28% and 97% of land use efficiency than Cs. No competition and aggressivity was exhibited between legume intercrops and cotton. Conclusion These indices suggest that pigeon pea, dolichos and cotton are not suitable for intercropping in additive series with HDPS at the existing row spacing (1:1). Further, the indices with Bt-cultivars ensure the facilitative robustness of legume intercropping technology for sustainable production under rainfed areas.

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Integrated weed management in cotton under irrigated condition of middle Gujarat

Cited by 4 publications

References 4 publications

Integrated Weed Management in Bt-Cotton Under Semi Arid Conditions – A Review

Integrated Weed Management in Bt-Cotton Under Semi Arid Conditions – A Review

Impact of weed management practices on weeds and okra crop

Indices for measuring system efficiency of American cotton and legume intercropping in additive series of 1:1 ratio at rainfed vertisols

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