Weed dynamics as influenced by tillage system, sowing time and weed competition duration in dry-seeded rice

Matloob, Amar; Khaliq, Abdul; Tanveer, Asif; Hussain, Saddam; Aslam, Farhena; Chauhan, Bhagirath Singh

doi:10.1016/j.cropro.2015.01.009

Cited by 32 publications

(23 citation statements)

References 34 publications

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“…When weed dry matter was less with application of probaben followed by supplementary hoe weeding, the higher soybean dry matter carried through till maturity, resulting in higher pods and pod weight and ultimately grain yield of soybean. Reduction in soybean dry matter accumulation with increasing weed dry matter across the treatments may be due to limited supply and use of growth resources that led to reduction in assimilatory surface area (Khaliq et al, 2012) and hence reduced assimilation during early growth period and its subsequent partitioning at maturity (Matloob et al, 2015). These responses are consistent with those reported by Adigun et al (2017) in the presence of similar weed species in groundnut.…”

Section: Discussionsupporting

confidence: 78%

Row spacing and weed management methods influences growth and yield of soybean (Glycine max (L.) Merr.)

Daramola

Adeyemi

Adigun

et al. 2019

Agricultura Tropica Et Subtropica

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Weed infestation is among the primary reasons for low yields of soybean in Nigeria and other parts of Sub Saharan Africa (SSA). Field trials were therefore carried out in 2016 and 2017 cropping seasons to evaluate the effect of row spacing and weed management methods on growth and yield of soybean. The use of 50 cm row spacing resulted in significant (P < 0.05) reduction in weed cover score, weed density and weed dry matter with subsequent increase in soybean growth and grain yield compared to 75 and 100 cm row spacings in both years. In addition, early weed control with probaben at 2.0 kg a.i (active ingredient) ha1 followed by (fb) supplementary hoe weeding (shw) at 6 weeks after sowing (WAS) suppressed weeds and increased soybean growth, which carried through to final dry matter and yield. Pre-emergence application of Probaben fb shw at 6 WAS gave the best weed control and resulted in significantly (P < 0.05) higher soybean grain yield compared to two and three hoe weedings or sole application of probaben under 50 and 75 cm inter-row spacing. However, three hoe weedings gave the best weed control and grain yield under 100 cm inter-row spacing. These results suggest that narrow row spacing of 50 cm and weed control by pre-emergence application of probaben fb shw will improve the productivity of soybean. Wide row spacing, however, required longer weed-free period and consequently multiple hoe weeding for optimum soybean yield.

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Section: Discussionsupporting

confidence: 78%

Row spacing and weed management methods influences growth and yield of soybean (Glycine max (L.) Merr.)

Daramola

Adeyemi

Adigun

et al. 2019

Agricultura Tropica Et Subtropica

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“…A shading effect of applied mulches cannot be neglected because it can prevent weed germination, as the seed dormancy is controlled by light and temperature in many annual weeds [5,8,29]. Zero tillage with crop residue as organic mulch may result in controlled soil erosion, improved water infiltration and moisture retention and weed suppression that ultimately leads to proficient resource use efficiency [11,12,30]. Chaffed herbage combinations documented a non-significant effect on maize emergence, maize emergence time, number of plants m À2 , and plant height.…”

Section: Discussionmentioning

confidence: 99%

Crop Residues Mulch as Organic Weed Management Strategy in Maize

Mahmood¹,

Ihsan²,

Khaliq³

et al. 2015

CLEAN Soil Air Water

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Crop residues mulching can be opted for organic and sustainable weed management in maize. A 2-year field study was conducted to evaluate the influence of different crop residues on weeds dynamics and productivity of maize under semi-arid conditions. Chaffed herbage (2-3 cm) of four crops viz., sorghum, sunflower, rice, and maize was mixed in different combinations (each crop at a rate of 6 t ha À1 ) and was surface applied as mulch. A weedy check and s-metolachlor þ atrazine application treatments were also established for comparison. Infestation of weeds had a negative impact on maize growth and yield. Nevertheless, surface applied mulches were helpful in suppressing weed pressure and improving maize growth and yield performance. Among different mulching combinations, the rice þ sunflower þ maize herbage recorded the maximum reductions in density and dry biomass of horse purslane and purple nutsedge compared with weedy check control. Total weeds suppression by this treatment was almost similar with s-metolachlor þ atrazine application. A maximum increment in terms of crop growth rate, total dry matter accumulation and grain yield was observed due to the mulching of rice þ sunflower þ maize. All the mulching combinations significantly enhanced the quality of maize as compared with weedy check and the sorghum þ sunflower þ maize was more effective for maize quality. Taking together, the results depicted that crop residue mulches can effectively suppress weed growth along with enhancing growth, yield and quality of maize, suggesting that it can be successfully employed in organic weed management programs in maize.

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“…The timing of seed disturbance will determine conditions of seed germination and will have a great influence on germination and subsequent growth (Berzsenyi, 2000). Contrary to the cultivated crops species, weeds can emerge and grow with greater diversity in composition and density under a wide range of environmental temperatures (Matloob et al, 2015). Planting time of a crop is directly related to land preparation and soil disturbance during a critical period in growing season shall determine which weed seeds, at what stage of dormancy or viability, are available for germination.…”

Section: Introductionmentioning

confidence: 99%

Crop Growth and Yield Losses in Wheat Due to Little Seed Canary Grass Infestation Differ with Weed Densities and Changes in Environment

et al. 2017

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-Understanding the weed interference with different sowing times of crop is inevitable for forecasting yield losses by weed infestation and designing sustainable weed management systems. A field experiment was carried out to evaluate the effects of sowing dates (20 th November, 10 th December) and various little seed canary grass (LCG) infestation levels (10, 20, 30 and 40 plant m -2 ) on growth and yield of wheat under semiarid conditions. Plots with two natural infestations of weeds including LCG (Unweeded control; UWC) and excluding LCG (UWC-LCG) were maintained for comparing its interference in pure stands with designated densities. A season-long weed-free (WFC) treatment was also run. All the weeds/ LCG infestation levels starting from 10 LCG plants m and UWC were comparable, however, these losses were much greater than UWC LCG. In crux, delay in sowing of wheat not only reduced the crop growth and yield but also enhanced the LCG/weed interference. Furthermore, greater competitive ability of LCG particularly for latesown wheat suggests that it should be controlled in order to provide healthy environment for crop plants.Keywords: interference, little seed canary grass, sowing time, weeds, wheat yield losses. Palavras-chave: interferência, pouca semente de alpiste, tempo de semeadura, plantas daninhas, perdas de rendimento de trigo. RESUMO -Entender a interferência de plantas daninhas com diferentes tempos

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Weed dynamics as influenced by tillage system, sowing time and weed competition duration in dry-seeded rice

Cited by 32 publications

References 34 publications

Row spacing and weed management methods influences growth and yield of soybean (Glycine max (L.) Merr.)

Row spacing and weed management methods influences growth and yield of soybean (Glycine max (L.) Merr.)

Crop Residues Mulch as Organic Weed Management Strategy in Maize

Crop Growth and Yield Losses in Wheat Due to Little Seed Canary Grass Infestation Differ with Weed Densities and Changes in Environment

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