Effect of cross ploughing on weed control of direct seeded rice in Manipur

2016 ◽  
Vol 35 (1) ◽  
Author(s):  
K. Nandini Devi ◽  
M. Sumarjit Singh
Keyword(s):  
Weed Control ◽  
Agricultural Production ◽  
Field Experiments ◽  
Control Method ◽  
Minimum Cost ◽  
Plant Populations ◽  
Straw Yield ◽  
Economic Method ◽  
Direct Seeded ◽  
Hand Weeding

Field experiments were conducted at Research Farm, Central Agricultural University, Imphal during <italic>kharif</italic> 2011 and 2012 to study the effect of cross ploughing on weed control of wet- direct seeded rice in Manipur. Maximum plant population was observed in control and once hand weeding without cross ploughing treatments as compared to other treatments. But maximum number of panicles per metre square, grain and straw yield were significantly higher in cross ploughing thrice followed by cross ploughing twice than the other treatments after cross ploughing. Plant populations as well as number of weeds were significantly lower in the treatment cross ploughing thrice at 25 days after sowing. Thus cross ploughing twice at 25 days after sowing of wet –direct seeded rice was found to be the best economic method of weed control for obtaining highest B:C ratio with minimum cost of cultivation in both the years. This weed control method of cross ploughing in wetdirect seeded rice is of great significance in conserving the natural resources and maintaining the sustainability of the agricultural production system.

scholarly journals Yield and Yield Attributing Characters of Promising Rice Genotypes under Dry Direct Seeded Conditions as Affected by Varieties and Weed Control Methods

2018 ◽  
Vol 6 (4) ◽  
pp. 313-318
Author(s):  
Dev Kumar Saphi ◽  
Dil Raj Yadav ◽  
Rajib Kumar Yadav ◽  
Rajendra Yadav
Keyword(s):  
Weed Control ◽  
Field Experiments ◽  
Control Methods ◽  
Rice Varieties ◽  
Human Labour ◽  
Main Plot ◽  
Direct Seeded ◽  
Rice Genotypes ◽  
Hand Weeding ◽  
Plot Design

Dry direct seeded rice is an alternative to the farmers in the context of climate change and inputs scarcity especially labor. However, weeds are the major problem in dry direct seeded conditions competing with the different resources provided to the crop. Hence, field experiments were conducted for two consecutive years 2015 and 2016 in the experimental field of Rice Research Program, Hardinath, Dhanusha to identify the appropriate herbicides for DSR. The experiment was laid out in a split plot design and treatments were replicated thrice. Three varieties of rice namely Ciherang Sub-1, IET 16775 and Sukhkhadhan-3 were treated as main plot factors while five levels of weed control methods (Oxadiargyl @ 100 g a.i./ha as pre-emergence followed by Fenoxaprop @ 90 g a.i./ha with safener, Pendimethalin @ 1000 g a.i./ha as pre-emergence followed by Bispyribac sodium @ 25 g a.i/ha at three weeks after seeding, Pendimethalin @ 1000 g a.i./ha as pre-emergence followed by Pyrazosulfuron ethyl @ 25 g a.i.ha + Bispyribac sodium @ 25 g a.i./ha at three weeks after seeding, hand weeding and weedy check) were treated as sub-plot factors. The statistical analysis showed that the effect of weed control methods on yield and yield attributing parameters of the tested rice varieties was significant. Out of the tested treatments hand weeding yielded significantly higher grain yield (5.4 t/ha) followed by herbicides Pendimithalin fb Pyrazosulfuron ethyl + Bispyribac sodium; which reduced the weed density and was comparable with hand weeding. The interaction effect of weed control methods and varieties was found non-significant. Pendimithalin fb Pyrazosulfuron ethyl + Bispyribac sodium was found to control broad spectrum of weeds and also reduced the human labour drudgery and increasing the rice yield than the other herbicides in direct seeded rice. Int. J. Appl. Sci. Biotechnol. Vol 6(4): 313-318

scholarly journals The Effect of Different Weed Management Strategies on the Growth and Yield of Direct-Seeded Dry Rice (Oryza sativa)

2016 ◽  
Vol 34 (1) ◽  
pp. 57-64 ◽  
Author(s):  
S. MUHAMMAD ◽  
I. MUHAMMAD ◽  
A. SAJID ◽  
L. MUHAMMAD ◽  
A. MAQSHOOF ◽  
...  
Keyword(s):  
Weed Control ◽  
Crop Yield ◽  
Weed Management ◽  
Management Strategies ◽  
Control Measures ◽  
Growth And Yield ◽  
Primary Concern ◽  
Herbicide Treatment ◽  
Direct Seeded ◽  
Hand Weeding

Weed management is a primary concern in direct seeded rice (DSR) cropping because weed growth becomes a major constraint on crop yield. A two year field study was set up to evaluate the effect of various weed control measures on crop growth, grain yield and grain quality of DSR. The experiment involved five different weed control measures: hand weeding, hoeing, inter-row tine cultivation, inter-row spike hoeing and herbicide treatment (Nominee 100 SC). The extent of weed control (compared to a non-weeded control) ranged from 50-95%. The highest crop yield was obtained using hand weeding. Hand weeding, tine cultivation and herbicide treatment raised the number of fertile rice tillers formed per unit area and the thousand grain weight. Tine cultivation provided an effective and economical level of weed control in the DSR crop.

scholarly journals The influence of weed management on the growth and yield of direct seeded rice (Oryza sativa L.)

2015 ◽  
Author(s):  
Muhammad Saqib ◽  
Sajid Ali ◽  
Muhammad Ijaz ◽  
Muhammad Latif ◽  
Maqshoof Ahmad ◽  
...  
Keyword(s):  
Weed Control ◽  
Crop Yield ◽  
Weed Management ◽  
Oryza Sativa L ◽  
Control Measures ◽  
Growth And Yield ◽  
Primary Concern ◽  
Herbicide Treatment ◽  
Direct Seeded ◽  
Hand Weeding

Weed management is a primary concern in direct seeded rice (DSR) cropping because weed growth becomes a major constraint on crop yield. A two year field study was set up to evaluate the effect of various weed control measures on crop growth, grain yield and grain quality of DSR. The dry seeded non flooded rice experiment involved five different weed control measures: hand weeding, hoeing, inter-row tine cultivation, inter-row spike hoeing and herbicide treatment (Nominee 100 SC). The extent of weed control (compared to a non-weeded control) ranged from 50-95%. The highest crop yield was obtained using hand weeding. Hand weeding, tine cultivation and herbicide treatment raised the number of fertile rice tillers formed per unit area and the thousand grain weight. Tine cultivation provided an effective and economical level of weed control in the DSR crop.

scholarly journals Chemical weed management in Brassica rapa var. yellow sarson

2016 ◽  
Vol 8 (2) ◽  
pp. 663-667
Author(s):  
S. K. Das
Keyword(s):  
Weed Control ◽  
Seed Yield ◽  
Weed Management ◽  
Field Experiments ◽  
Control Measures ◽  
Research Station ◽  
Control Efficiency ◽  
Weed Control Efficiency ◽  
Hand Weeding ◽  
Level Of Significance

Field experiments were conducted for three years at Pulses and Oilseeds Research Station, Berhampore, Murshidabad, West Bengal, India during rabi 2008, 2009 and 2010 to develop an efficient chemical weed management practice with newer herbicidal molecules in yellow sarson. The experiment was laid out in a randomized block design with three replications having eleven treatments. Experimental results revealed that highest seed yield (1456 kg ha-1) was recorded under the treatment twice hand weeding and lowest with weedy check (910 kg ha-1). Twice hand weeding recorded 60% higher seed yield over weedy check. Application of chemical herbicides significantly improved the seed yield over W0 at 5% level of significance.. Among the chemical weed control measures, application of Pendimathalin @ 1 kg a.i./ha (PE) recorded highest seed yield (1320 kg ha-1) of yellow sarson, which was found at par with application of Pendimathalin @ 1.5 kg a.i./ha (PE), Fluchloralin @ 1.5 kg a.i/ha (PPI) and Clodinafop @ 0.06 kg a.i./ha ( 25-30 DAS). Chemical weed management practices increased the seed yield of yellow sarson by 25.3 to 45.1% over weedy check. Highest weed control efficiency (86.4%) was recorded with hand weeding twice. Significant reduction in the total weed density and total weed dry weight were found with the application of chemical herbicides at 5% level of significance. Among the chemical herbicides Pendimathalin @ 1 kg a.i./ha (PE) recorded highest weed control efficiency (81.7%). Chemical weed control measures increased the total microbial population by 26.5 to 89.4% over weedy check and 6.6 to 59.6% over twice hand weeding and thus proved to be environmentally safe and economic for managing weeds in yellow sarson.

scholarly journals Performance of Dry Direct Seeded Rice and Weeds on Sesbania Brown Manuring as Compared to Farmers’ Practice and Chemical Control Method

2018 ◽  
Vol 6 (3) ◽  
pp. 265-269
Author(s):  
Sunil Kumar Chaudhary ◽  
Santosh Marahatta ◽  
Manisha Chaudhary
Keyword(s):  
Weed Management ◽  
Chemical Control ◽  
Management Practices ◽  
Control Method ◽  
Management Practice ◽  
Block Design ◽  
Effective Control ◽  
Direct Seeded ◽  
Hand Weeding ◽  
The Individual

The research was conducted to study the comparison of farmers’ weed management practice in rice with chemical control and Sesbania co-culture. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications and five different weed management practices. The five treatments were Farmers’ practice (two hand weeding first at 28 DAS and another at 40 DAS), Chemical practice (Bispyribac sodium as post emergence @ 25 g a.i. ha-1 at 25 DAS), Sesbania co-culture (100 kg Sesbania ha-1 and knocking down at 28 DAS), Weed free (Hand removal of weeds at 10 days’ interval) and Weedy check (No weed management). The individual plot size was 5 x 4 m2. The Sesbania co-culture and farmers’ practice were found more or less similar performance for all observed parameters but as better as compared to weedy check and chemical treatment. Sesbania co-culture was found less costly than farmers’ practice for weed management. The experiment clearly demonstrated the importance of brown manuring on effective control of weeds in rice field under dry direct seeded rice.Int. J. Appl. Sci. Biotechnol. Vol 6(3): 265-269

Effect of Different Weed Management Practices on Weed Dynamics, Productivity and Farm Profitability of Cluster Bean

2020 ◽  
Author(s):  
Vipin Kumar ◽  
O. P. Meena ◽  
M. R. Yadav ◽  
S. K. Goyal ◽  
A. K. Meena ◽  
...  
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Agricultural Research ◽  
Minimum Cost ◽  
Cluster Bean ◽  
Net Returns ◽  
Biological Yield ◽  
Weed Dynamics ◽  
Hand Weeding

The present study was conducted in kharif seasons of 2015, 2016 and 2017 at experimental farm of Rajasthan Agricultural Research Institute, Durgapura, Jaipur (Rajasthan) to study efficacy of different weed management practices in clusterbean. Three years result shows that compared to weedy check (6.82 m-2) application of Pendimethalin @ 0.75 kg a.i. ha-1 as PE fb one hand weeding recorded lowest weed density (3.58 m-2). Among herbicidal treatments, Pendimethalin @ 0.75kg a.i/ha as PE fb one hand weeding at 25 DAS (83.7%) and Pendimethalin @ 0.75 kg a.i./ha as PE+ Imazathapyr+ Imazamox @ 40g a.i./ha PoE (74.0%) recorded highest weed control efficiency. Likewise, application of Pendimethalin @ 0.75kg a.i/ha as PE fb one hand weeding at 25 DAS and Pendimethalin 0.75kg/ha at PE fb Imazathapyr + Imazamox @ 40g a.i. ha-1 recorded significantly higher seed (1136 kg ha-1 and 1009 kg ha-1), haulm (3304 kg ha-1 and 2943 kg ha-1) and biological yield (4440 kg ha-1 and 3953 kg ha-1), respectively over other herbicidal treatments. Economic evaluation indicated that application of Pendimethalin @ 0.75kg a.i/ha as PE fb one hand weeding at 25 and which was followed by with Pendimethalin @ 0.75 kg a.i./ha as PE+ Imazathapyr+ Imazamox@ 40g a.i./ha recorded, gross return (INR 55352 ha-1 and INR 49189 ha-1) net returns (INR 38852 ha-1 and INR 34289 ha-1) and B:C ratio (2.35 and 2.20), respectively. Whereas, minimum cost of cultivation (INR 10000 ha-1) and gross returns (INR 25632 ha-1), net returns (INR 15632 ha-1) and B:C ratio (1.56) were recorded under weed check. So looking to the laborious pressure of hand weeding, cost effectiveness ease of application of chemical herbicides, application of Pendimethalin 0.75 kg ha-1 fb one hand weeding can be an effective weed control option in cluster bean crop with higher seed and haulm yield under Semi-arid and Arid regions of Rajasthan.

scholarly journals Effects of weed control through cowpea intercropping on mayze morphology and yield

2007 ◽  
Vol 25 (3) ◽  
pp. 433-441 ◽  
Author(s):  
J.K.O. Gomes ◽  
P.S.L. Silva ◽  
K.M.B. Silva ◽  
F.F. Rodrigues Filho ◽  
V.G. Santos
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Control Method ◽  
The Other ◽  
Weed Species ◽  
Mean Values ◽  
Maize Cultivars ◽  
Poaceae Family ◽  
Maize Yields ◽  
Hand Weeding

Intercropping combined with competitive maize cultivars can reduce the use of herbicides to control weeds. The objective of this work was to evaluate the effects of intercropping cowpea and maize, as well as hand-weeding on maize morphology and yield. The experimental design was in randomized complete blocks, with treatments arranged in split-plots and five replications. The plots consisted of four maize cultivars (BA 8512, BA 9012, EX 4001, EX 6004) and the split-plots consisted of the following treatments: no-weeding; twice hand-weeding (20 and 40 days after sowing); and intercropping with cowpea ('Sempre Verde' cultivar), both maize and cowpea sown at the same time. The variables evaluated were: maize fresh green ears and grain yield; characteristics of internodes, leaves, tassels, ears, grains; plant height and ear insertion height; number of weed plants and species; fresh and dry biomass of weed species and cowpea. Ten weed species were outstanding during the experiment, many of them from the Poaceae family. No interactions were found between weed control method and maize cultivars for most variables evaluated; and plants from hand-weeded split-plots showed superior mean values compared to plants from non-weeded and intercropped split-plots, both not differing from each other. The cowpea was inefficient in controlling weed, reducing the maize yields and not producing any grain. The maize cultivars 'BA 8512' and 'BA 9012 showed the highest mean green ear yield, and the highest grain yield in hand-weeded, no-weeded and intercropped split-plots. On the other hand, the maize cultivar 'EX 6004' showed such high means only in no-weeded and intercropped split-plots. 'EX 4001 presented the worst means in these variables for hand-weeded, no-weeded ant intercropped split-plots.

Weed Control and Tolerance of Sulfonylurea Herbicides in Caladium

2018 ◽  
Vol 32 (4) ◽  
pp. 424-430 ◽  
Author(s):  
Jialin Yu ◽  
Nathan S. Boyd
Keyword(s):  
Weed Control ◽  
Field Experiments ◽  
Tuber Weight ◽  
Sulfonylurea Herbicides ◽  
Greenhouse Experiments ◽  
Tuber Injury ◽  
Herbicide Treatments ◽  
Sequential Treatments ◽  
Common Purslane ◽  
Hand Weeding

AbstractControl of broadleaf weeds in caladium is difficult due in part to a lack of selective POST herbicides. Cultivation is not an option due to the dense canopy and potential for tuber injury. As a result, growers currently rely on preemergence (PRE) herbicide and hand-weeding. The objective of this research was to evaluate the control of four common broadleaf weeds of field grown caladium with POST applications of halosulfuron, thifensulfuron-methyl, and trifloxysulfuron, and determine the tolerance of caladium cultivars ‘Florida Fantasy’ and ‘Florida cardinal’ to POST applications of halosulfuron. At 4 weeks after treatment (WAT), thifensufluron-methyl at 28 g ai ha−1 and trifloxysulfuron at 84 g ai ha−1 provided approximately 90 and 70% common purslane control, respectively, while halosulfuron at 210 g ai ha−1 provided 55% suppression. Trifloxysulfuron controlled ≥90% spotted spurge at 42 g ha−1, whereas the highest rate of halosulfuron and thifensulfuron-methyl only achieved 60% suppression. In field experiments, the evaluated sulfonylurea (SU) herbicides were less efficacious on hairy indigo and sharppod morningglory as control never exceeded 65 and 50%, respectively. In greenhouse experiments, the evaluated halosulfuron rates ranging from 26 to 420 g ha−1 did not significantly reduce caladium tuber weight from the nontreated control. Averaged over halosulfuron rates, ‘Florida Fantasy’ damage was 5 and 6% at 2 and 4 WAT, respectively, while ‘Florida Cardinal’ damage was 11%. We conclude that none of the herbicide treatments effectively controlled all species evaluated. Sequential treatments, higher rates, or tank-mixtures may be necessary to adequately control these species. We also conclude that caladium cultivars ‘Florida Fantasy’ and ‘Florida Cardinal’ have acceptable tolerance to POST applications of halosulfuron. Further research is needed to evaluate caladium tolerance to other SU herbicides.

Determination of the Critical Period for Weed Control in Corn

2013 ◽  
Vol 27 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Geoffroy Gantoli ◽  
Victor Rueda Ayala ◽  
Roland Gerhards
Keyword(s):  
Weed Control ◽  
Critical Period ◽  
Field Experiments ◽  
Critical Time ◽  
Weed Competition ◽  
Growth Stages ◽  
Leaf Stage ◽  
Time Period ◽  
Weed Infestation ◽  
Hand Weeding

Field experiments were conducted in western Atakora, Benin, to determine the critical time period of weed competition in hand-weeded corn. Weeds were removed until different crop growth stages and then allowed to reemerge. Other treatments began weed control at different growth stages (four-, eight-, and ten-leaf stages and flowering) and were maintained until harvest. One treatment was permanently kept weed-free and one treatment was uncontrolled until harvest. Yields without weed competition ranged from 2.8 to 3.4 t ha−1. As expected, yield loss increased with duration of weed infestation and ranged from 38 to 65% compared to permanent weed-free plots. In three out of four site-years, the critical period for weed control started at the four- to six-leaf stage and continued until ten-leaf stage or flowering of corn. Approximately four hand-weeding applications were required in this critical period of weed control.

scholarly journals Effect of different planting geometry and herbicides for controlling the weeds in direct seeded rice

2016 ◽  
Vol 8 (4) ◽  
pp. 2203-2205
Author(s):  
Neeshu Joshi ◽  
V. Pratap Singh ◽  
V. C. Dhyani
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Active Ingredient ◽  
Rainy Season ◽  
Net Returns ◽  
Planting Geometry ◽  
Tropical Conditions ◽  
Direct Seeded ◽  
Hand Weeding

The efficacy of selected herbicides along with the planting geometry for weed control in direct seeded rice was evaluated under tropical conditions of Pantnagar during rainy season of 2013. Pendimethalin (1kg active ingredient (a.i.) ha-1 3 days after sowing) + bispyribac-Na (25g a.i. ha-1 28 days after sowing) + one hand weeding at 45 days after sowing and bispyribac-Na (25g a. i. ha-1 28 days after sowing) + one hand weeding at 45days after sowing had a mean grain yield of 47.95 and 37.68 while continuous drilling at 20cm and 20 x 10cm had a mean grain yield 34.72 and 34.14 qha-1 , respectively which is significantly superior than wider (25 x 25cm) spacing. Wider spacing (25 x 25cm) among planting geometry and weedy check among the weed control treatments resulted in higher uptake of nitrogen. Among the spacing, continuous drilling at 20cm and Pendimethalin (1kg a.i. ha-1) + bispyribac- Na (25g a.i. ha-1) + one hand weeding at 45 days after sowing among weed control practices proved most profitable with net returns of ` 40576 ha-1 and ` 40633 ha-1 and benefit:cost ratio of 1.7 and 1.8, respectively. It was revealed that all the weed control treatments were superior to weedy conditions.

Sign in / Sign up

Export Citation Format

Share Document