Critical competition period of parthenium weed (Parthenium hysterophorus L.) in maize

Safdar, Muhammad Ehsan; Tanveer, Asif; Khaliq, Abdul; Maqbool, Rizwan

doi:10.1016/j.cropro.2015.11.002

Cited by 36 publications

(44 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There was an increase in the weed dry mass during the periods of coexistence between the species, as opposed to maize that presented linear reduction during the same period (Figure 1). These results corroborate those found by Maqbool et al (2006) and Safdar et al (2016) who observed an increase in weed biomass during periods of coexistence with maize. For the control periods (Figure 2), there was an opposite effect compared to the coexistence treatments in respect to the weeds that were controlled during the initial infestation stages of the maize, allowing the crop to develop a greater dry mass, without as much interference and losses caused by the interference of the southern crabgrass and Alexandergrass weeds.…”

Section: Periods Of Interference and Effect Of Competition On Maize Ysupporting

confidence: 93%

“…Knowing the appropriate period for weed management helps in decision for the application any control measure. The critical period of competition is defined as the shortest possible period in the life cycle of a crop in which weed control has the highest economic return (Nazir, 1994;Safdar et al, 2016). The period of cohabitation of the weed crop can be divided into: a) pre-interference period (PIP), period from the sowing, the crop can live with the weeds without reducing the productivity; b) total period of weed control (TPWC), that from the emergence of the crop, in which weeds must be controlled so that the crop exerts its maximum productive potential; c) critical period of weed control (CPWC), corresponds to the difference between the PIP and the TPWC, when the crop should be effectively weed-free.…”

Section: Introductionmentioning

confidence: 99%

“…In maize, there is a significant reduction in grain yield when the crop competes with weeds for increasing periods of time. In addition, weed infestation in maize for the period of 2 to 6 weeks, depending on the development stage of the crop, may lead to a high yield reduction (Hall et al, 1992;Safdar et al, 2016), since is in the initial development stages that the yield components are stablished. However, the critical period for control varies from 11 to 56 days after emergence (DAE) of the culture.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Interference Periods of Weeds Infesting Maize Crop

Galon¹,

Bagnara²,

Gabiatti³

et al. 2018

JAS

View full text Add to dashboard Cite

When competing with crops, weeds interfere with their growth and consequently reduce grain yield. The purpose of this research was to determine the periods of interference; PIP (pre-interference period), TPWC (total period of weed control), and CPWC (critical period of weed control) of the weeds Alexandergrass (Urochloa plantaginea) and southern crabgrass (Digitaria ciliares) in maize. The experiment was conducted in a randomized complete block design with four replications, in a no-tillage system. The treatments consisted in maintaining maize in the presence and absence of Alexandergrass and southern crabgrass for increasing periods of 0, 7, 14, 21, 28, 35 and 42 days after emergence (DAE). Southern crabgrass and Alexandergrass weeds originated from the soil seed bank with an average density of 215 and 87 plants m-2, respectively. At the end of each period, PIP or TPWC, the weed and crop dry biomass was determined. At 42 DAE, the height and stem diameter of maize plants were evaluated. At harvest 10 maize plants per experimental unit were evaluated for length of ears, number of rows per ear, and number of grains per row. Yield was measured by taking three central rows from each experimental unit. The results indicate that the PIP was 17 DAE, the TPWC was 32 DAE, and the CPWC was 17 to 32 DAE.

show abstract

Section: Periods Of Interference and Effect Of Competition On Maize Ysupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interference Periods of Weeds Infesting Maize Crop

Galon¹,

Bagnara²,

Gabiatti³

et al. 2018

JAS

View full text Add to dashboard Cite

show abstract

“…Similar studies in other crops have demonstrated decreased yield components due to weed-crop interference. Safdar et al (2016) reported decreased yield components in a corn crop and Singh et al (2016) in a pea crop. Weed interference did not affect grain filling, so that the 1000 grains weight variable was the most stable.…”

Section: Critical Period Of Weed Interference (Cpwi)mentioning

confidence: 99%

“…The critical period of weed interference (CPWI) can be defined as the stage in the growth cycle of any crop during which weeds must be controlled to prevent unrecoverable yield losses. Knowledge of crop CPWI also contributes to minimize yield losses that this crop can exhibit due to weed infestation (Safdar et al, 2016); determining CPWI is an indispensable tool to propose effective weed management strategies in any crop production system (Tursun et al, 2016). Information about CPWI in quinoa and its effect on yield is very limited; therefore, findings in other crops encourage research on the effect of weeds on quinoa and define when weed management is more efficient.…”

Section: Introductionmentioning

confidence: 99%

Critical period of weed interference on total polyphenol content in quinoa

Merino

Pedreros²,

Fischer³

et al. 2019

Chil. j. agric. res.

View full text Add to dashboard Cite

There is limited information about the critical period of weed interference (CPWI) in quinoa (Chenopodium quinoa Willd.) and the effect produced by the weed-crop interaction in secondary metabolite accumulation. The objective of the present study was to determine the CPWI and its effect on total polyphenol content in quinoa. The experiments were conducted during two consecutive seasons using a randomized complete block design with 16 treatments consisting of 8 weed growth periods and 8 weed-free growth periods in which weed population and biomass were evaluated; productive parameters, yield components, and total polyphenols were determined in the quinoa crop. Grain number per plant affected yield because of weed interference (P < 0.05), which decreased from 4312 to 162 grains plant-1 in weed growth periods and increased from 181 to 5110 grains plant-1 in weed-free growth periods. Total polyphenol content was affected by stress from weed interference (P < 0.05), which increased from 2.2 gallic acid equivalents (GAE) g-1 to 3.6 mg GAE g-1 in weed growth periods and decreased from 3.6 GAE g-1 to 1.9 mg GAE g-1 in weed-free growth periods, while the population remained constant (P > 0.05). The CPWI was determined between the phenological stages of two true leaves to flowering; therefore, the quinoa crop must remain weed-free between these two phenological stages to rule out production losses greater than 5%.

show abstract

Degradation of Agriculture Systems by Invasive Alien Plants and Agroecological Approaches for Sustainable Restoration

Kumar

2023

Agroecological Approaches for Sustainable Soil Management

View full text Add to dashboard Cite

Critical competition period of parthenium weed (Parthenium hysterophorus L.) in maize

Cited by 36 publications

References 13 publications

Interference Periods of Weeds Infesting Maize Crop

Interference Periods of Weeds Infesting Maize Crop

Critical period of weed interference on total polyphenol content in quinoa

Degradation of Agriculture Systems by Invasive Alien Plants and Agroecological Approaches for Sustainable Restoration

Contact Info

Product

Resources

About