Weed dynamics, crop growth and yield attributes of irrigated chickpea in response to chemical weed control

2021 ◽  
pp. 1-19
Author(s):  
Nouman Arshad ◽  
Amar Matloob ◽  
Mudassir Aziz ◽  
Mohsin Ali Raza Khan ◽  
Muhammad Amin ◽  
...  
Keyword(s):  
Weed Control ◽  
Crop Growth ◽  
Growth And Yield ◽  
Yield Attributes ◽  
Weed Dynamics

Weed management options in transgenic stacked and non transgenic maize (Zea mays) hybrids-A review

2017 ◽  
Vol 38 (04) ◽  
Author(s):  
K. Sivagamy ◽  
C. Chinnusamy ◽  
P. Parasuraman
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Crop Growth ◽  
Control Programme ◽  
Growth And Yield ◽  
Growth Stages ◽  
Management Options ◽  
Maize Crop ◽  
Weed Growth ◽  
Vigorous Growth

Weeds are generally hardy species having fast growth, deep root system and capable of competing very efficiently with cultivated crops for the available resources and adversely affect the crop growth and yield. Weed management systems that rely on post emergence control assume that crops can tolerate competition for certain periods of time without suffering yield losses. Initial slow growth particularly at early crop growth stages and wider plant spacing of maize crop encourages fast and vigorous growth of weeds. It is of paramount importance that, competition from weeds must be minimized to achieve optimum yield. Among the different weed control methods, chemical method bears many advantages in suppressing weed growth and to get healthy and vigorous crop stand. Non-selective herbicide molecules with a variety of mode of action were discovered, developed and marketed for successful weed control programme.

scholarly journals Weed competition in maize crop under different timings for postemergence weed control

2000 ◽  
Vol 53 ◽  
pp. 269-272 ◽  
Author(s):  
T.K. James ◽  
A. Rahman ◽  
J. Mellsop
Keyword(s):  
Zea Mays ◽  
Weed Control ◽  
Crop Yields ◽  
Ground Cover ◽  
Crop Growth ◽  
Growth And Yield ◽  
Weed Competition ◽  
Maize Crop ◽  
Maize Yields

The effect of early weed competition was determined for a maize (Zea mays) crop grown in Waikato Maize was established in three different environments viz weedy (no herbicide) grass weeds (preemergence atrazine) and broadleaf weeds (preemergence metolachlor) Surviving weeds were controlled with postemergence nicosulfuron (60 g/ha) after different periods of competition and the plots kept weed free for the remainder of the trial Weeds left completely uncontrolled for 4 weeks after emergence significantly reduced crop yields When a preemergence herbicide was used surviving weeds began to reduce maize yields after about 6 weeks with grasses having greater effect than broadleaf weeds The actual period before the weeds started affecting crop growth and yield appeared to be related to the time taken by the weeds to achieve complete ground cover

Effect of post-emergence herbicides on weed control, growth and yield of cluster bean [Cyamopsis tetragonoloba (L.) Taub.] in M.P.

2017 ◽  
Vol 37 (03) ◽  
Author(s):  
Kalpana Sharma ◽  
G. S. Rawat ◽  
Dharmendra Gaur ◽  
Anju Sharma
Keyword(s):  
Field Experiment ◽  
Weed Control ◽  
Seed Yield ◽  
Growth And Yield ◽  
Cyamopsis Tetragonoloba ◽  
Yield Attributes ◽  
Cluster Bean ◽  
Control Growth ◽  
Weed Control Efficiency ◽  
Stover Yield

A field experiment was undertaken to evaluate the performance of different weed control treatments in cluster bean during kharif, 2015 in RBD with three replications. Treatment of weed free check was found best by recording highest values of yield attributes, seed (20.97 q/ha), stover (65.68q/ha) with maximum weed control efficiency at successive stages. Among different herbicides treatments, Imazethapyr + Imazamox @ 40 g/ha (PoE) at 20 DAS showed highest values of yield attributes, seed yield (19.59 q/ ha), stover yield (63.83 q/ ha), WCE (91.84, at 60 DAS) and minimum WI (6.0). In monetary terms significantly highest net return (Rs.86883 /ha) were obtained from weed free check, followed by imazethapyr + imazamox @ 40 g/ha (PoE) at 20 DAS (Rs.85398 / ha) and imazethapyr @ 75 g/ha (PoE), at 20 DAS (84394 Rs./ha). The maximum B:C ratio of 6.57 was recorded with treatment imazethapyr @ 75 g/ha (PoE), followed by imazethapyr+ imazamox @ 40 g/ha (PoE) 6.37.

scholarly journals Growth and Yield Response of Wheat to Tillage, Rice Residue and Weed Management under Rice–Wheat Cropping System

2020 ◽  
Vol 1 (1) ◽  
pp. 43-48
Author(s):  
Bisheshwor Prasad Pandey ◽  
Tanka Prasad Kandel
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Weed Management ◽  
Production Systems ◽  
Cropping System ◽  
Growth And Yield ◽  
Yield Response ◽  
Potential Yield ◽  
Yield Attributes ◽  
Residue Retention

Recent decades have seen many changes in agricultural production systems in Nepal, such as increased mechanization for harvesting of major cereal crops, which leaves a large volume of crop residue in the field, increased herbicide application for weed control, and increased adoption of reduced tillage systems. In this study, we compared the effects of tillage, rice residue and weed managements on yield and yield attributes of wheat cultivated under rice-wheat rotation in the Southern Plain (Terai) region of Nepal. The study was conducted during the wheat growing seasons (November through April) of 2013–2014, 2014–2015 and 2015–2016 in Rupandehi district. The experiment was deployed in a split-split plot design with tillage system as main plot [conventional tillage (CT) and zero tillage (ZT)], residue removal management as a sub-plot [whole residue retained (WR), partial residue retained (PR) and no residue retained (NR)], and weed management as a sub-sub plot [(manual weeding (MW) and chemical weeding (CW)], replicated three times. Analysis of variance was applied to the yield and yield attributes of wheat for fixed and interaction effects. Averaged across the years, the CT system (2.4 t ha–1) had significantly higher yield than ZT (2.2 t ha–1) but the difference was not consistent in all study years. While rice residue retention did not influence grain yield in Year1, WR produced greatest and NR produced lowest yield in Year2 and Year3, indicating potential yield increase in wheat following the whole rice residue retention in the long run. Grain yield did not significantly vary with weed management method, suggesting that manual weed control can be as effective as herbicide in weed management in wheat agroecosystem in the Southern Plains (Terai) region of Nepal.

scholarly journals Efficiency of some herbicides and manual weeding for weed control in irrigated Bt cotton

2018 ◽  
Author(s):  
R.K. Mathukia ◽  
B.K. Sagarka ◽  
P.R. Mathukia ◽  
N.V. Savaliya
Keyword(s):  
Weed Control ◽  
Cynodon Dactylon ◽  
Chenopodium Album ◽  
Dry Weight ◽  
Cyperus Rotundus ◽  
Growth And Yield ◽  
Cotton Field ◽  
Bt Cotton ◽  
Seed Cotton ◽  
Yield Attributes

To evaluate the efficacy of some pre and post-emergence herbicides for weed control in Bt cotton (var. Beejdhan 2), a field experiment was conducted during rainy seasons of 2014-15, 2015-16 and 2016-17 at Junagadh (Gujarat, India). The dominant weed flora in cotton field were Digera arvensis, Eluropus villosus, Cyperus rotundus, Cynodon dactylon, Echinochloa crusgalli, Chenopodium album, Convolvulus arvensis, Trianthema monogyna, Amaranthus spinosus, Commelina benghalensis and Asphodelus tenuifolius. The results revealed that treatments viz., hand weeding (HW) and interculturing (IC) at 30, 60 and 90 DAS, pendimethalin 0.9 kg ha-1 as pre-emergence fb HW and IC at 30 and 60 DAS, and pendimethalin 0.9 kg ha-1 as pre-emergence fb quizalofop 40 g ha-1 as post-emergence at 45 DAS were found superior to the unweeded check in enhancing growth and yield attributes viz., plant height, number of monopodial and sympodial branches plant-1, number of bolls plant-1, single boll weight and seed cotton weight plant-1 and ultimately increased seed cotton and stalk yields. These treatments also recorded lower dry weight of weeds and weed index along with higher weed control efficiency, net return and B:C ratio as compared to unweeded check.

scholarly journals Efficacy and selectivity of pendimethalin for weed control in soybean (Glycine max (L.) Merr.), Gezirastate, Sudan

2020 ◽  
Vol 7 (1) ◽  
pp. 59-68
Author(s):  
Suhaip Zain ◽  
Awadallah Dafaallah ◽  
Mohamed Zaroug
Keyword(s):  
Weed Control ◽  
Descriptive Analysis ◽  
Growth And Yield ◽  
Control Treatment ◽  
Research Station ◽  
Test Results ◽  
Yield Attributes ◽  
Broad Leaf ◽  
Weed Infestation ◽  
Glycine Max L

Objective. The aim of the present study was to evaluate the effi cacy and selectivity of the herbicide pendimethalin on weed control in soybean at Gezira State, Sudan. Methods. A fi eld experiment was carried out at Gezira Research Station Farm, Wad Medani, Sudan during summer season 2018/2019. The pendimethalin (Pendimight 500 EC®) was applied at three doses as pre-emergence treatment. The doses were 1.339, 1.785 and 2.232 Kg a.i./ha. Weeded and un-wedded treatments were included for comparison. The treatments were arranged in a randomized complete block designed with four replicates. Data were subjected to descriptive analysis and analysis of variance procedure (P ≤ 0.05). Signifi cant means were separated using Duncan’s Multiple Range test. Results. The results showed that all herbicide treatments were effective in weed control. They signifi cantly reduced weed infestation compared to un-weeded control and signifi cantly promoted the yield and various growth characters of soybean over un-weeded control treatment, except pendimethalin at the dose of 2.232 Kg a.i./ha which only reduced the plant population by 7% due to a phytotoxicity effect on soybean as compared to un-weeded control treatment. Application of pendimethalin at the dose 1.339 kg a.i./ha signifi cantly controlled grasses and broad leaf weeds in soybean. It was also found superior in respect of various growth and yield attributes. Highest seed yield (1562.5 kg /ha) was recorded under pendimethalin treatment at a dose of 1.339 kg a.i./ha. Chemical analysis of soybean seeds showed that no residues of the tested herbicide were detected. Conclusions. It is concluded that the tested pre-emergence herbicide pendimethalin at the dose of 1.339 kg a.i./ha could be used effectively and safely in controlling weeds in soybean crop.

scholarly journals Effect of Different Spacing and Weed Management Practices on Weeds, Crop Growth and Productivity of Pigeon Pea Variety Pusa Arhar-16

2021 ◽  
Author(s):  
Yadwinder Singh ◽  
Kanwaljit Singh
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Field Experiments ◽  
Growth Parameters ◽  
Growth Parameter ◽  
Pigeon Pea ◽  
Crop Growth ◽  
Growth And Yield ◽  
Area Index ◽  
Yield Attributes

Background: To study effect of various spacing and weed management practices on weed control, growth parameter, yield and yield attributes of pigeon pea variety Pusa Arhar-16, field experiments were conducted at Student’s Research Farm, Khalsa College Amritsar, Punjab, India during kharif season of 2019-20.Methods: The experiment was laid out in Split plot design with three replications. The treatments comprised of four different spacing i.e. S1 (30×10 cm), S2 (30×15 cm), S3 (40×15 cm) and S4 (50×25 cm) which were considered as main plot treatments and three weed management practices W1 (weedy check), W2 (pendimethalin @ 1.5 kg a.i. ha-1 at 1DAS) and W3 (rice straw mulch) as sub-plot treatments.Result: It was found that maximum plant height (218.2 cm) and highest leaf area index (2.104) was recorded in treatment S1 (30×10 cm) whereas treatment S4 (50×25 cm) was superior in rest of growth parameters viz. maximum crop growth rate (0.85 gram per plant per day), number of primary branches (18.2 per plant) and number of secondary branches (13.8 per plant). Among yield and yield attributes, spacing S1 (30×10 cm) showed maximum grain yield (16.29 q ha-1) and stover yield (49.29 q ha-1) whereas, maximum number of pods per plant (154.6), pod length (4.83 cm), number of seeds per pod (3.90) and 100-seed weight (7.14 grams) were recorded in spacing S4 (50×25 cm). The weed management treatments showed non-significant effect on growth and yield parameters due to weed suppressing ability of the crop. which might be due to weed suppressing ability of the crop. It may be concluded that pigeon pea cultivar Pusa Arhar-16 performed better in narrower spacing of 30×10 cm due to its dwarf nature and it also showed good smothering effect on the weeds due to its smothering effect.

scholarly journals Effect of planting techniques and weed control treatments on growth and yield of wheat

2017 ◽  
Vol 9 (3) ◽  
pp. 1534-1539
Author(s):  
Sudesh Devi ◽  
V.S. Hooda ◽  
Jagdev Singh ◽  
Anil Kumar
Keyword(s):  
Weed Control ◽  
Dry Matter ◽  
Growth Parameters ◽  
Growth And Yield ◽  
Row Spacing ◽  
Dry Matter Accumulation ◽  
Yield Attributes ◽  
Net Returns ◽  
Free Treatment ◽  
Weed Flora

A field experiment was conducted to study the effect of different planting techniques (conventional drill sowing at 16, 18 and 20 cm row spacing and bed planting with two and three rows in main plots) and weed control treatments (pinoxaden 50 g/ha, ready-mix (RM) of carfentrazone and metsulfuron 25 g/ha and pinoxaden 50 g/ha + RM of carfentrazone and metsulfuron 25 g/ha in subplots) on growth and productivity of wheat. The grain yield under row spacing 18 cm (53.30 q/ha), and 20 cm (52.02 q/ha), and three rows bed planting (51.96 q/ha) were recorded statistically at par with each other and significantly higher than 16 cm (49.37 q/ha) row spacing and two row bed planting (48.53 q/ha). Gross returns (Rs. 95637/ha) and net returns (Rs. 43929/ha) and B:C ratio (1.85) were record-ed higher under 18 cm row spacing compared to other planting techniques. Tank mixed application of pinoxaden 50 g/ha + RM of carfentrazone and metsulfuron 25 g/ha applied at 35 days after sowing (DAS) controlled both grassy and broad leaved weeds effectively with lower values of weed dry matter accumulation (7.67 g/ha) and produced growth parameters, yield attributes and yield (53.16 q/ha) at par with weed free treatment. In light of the results to maximise productivity, 18 cm row spacing may be practiced and tank mix application of pinoxaden (50 g/ha) + RM of carfentrazone and metsulfuron (25 g/ha) is recommended to reduce losses due to complex weed flora in wheat.

Sign in / Sign up

Export Citation Format

Share Document