Weed density and yield

This study was conducted to examine the effects of baby corn density on the crop and weed performance under two different maizesoybean intercropping systems. The results showed that the yield of soybean and the growth of the weeds were statistically different under the different maize-soybean intercropping systems.

14p viengels 25-08-2023 5 2   Download

This study, therefore, aimed to investigate the effects of plant density and hand weeding on controlling weeds and yield of vegetable corn. The experiments were conducted in the field condition in a randomized complete block design with three replications.

14p chauchaungayxua12 09-07-2021 17 1   Download

To overcome this problem, use of herbicides has become an alternative method. Herbicide application is easier and economical to farmers compared to other weed management practices. Hence the present study deals with the effect of different weed management practices on weed density, weed dry weight and seed cotton yield.

6p chauchaungayxua10 19-03-2021 12 1   Download

A field experiment was conducted to evaluate the effect of sequential application of herbicides on weed density, weed dry weight and yield of irrigated maize during kharif season, 2019-2020 at Agricultural College and Research Institute, Madurai, Tamil Nadu

8p chauchaungayxua10 19-03-2021 15 1   Download

Jute cultivation is a labour-intensive activity. Small and marginal farmers extensively practice high density sowing (HDS) by broadcasting jute seed. High plant stand due to HDS at emergence increases major operational expenses of weeding and thinning, sorting and fibre extraction. To investigate effects of low density sowing (LDS)on production potential of fibre and green biomass and possible reduction in man-days and cost of cultivation, field experiment was conducted at ICAR-CRIJAF farm and it was also repeated through farmers’ field trials in four different locations

9p trinhthamhodang1216 19-11-2020 15 2   Download

In view of the above, present research work carried out with the objective to find out the effect of High Density Planting System (HDPS) and weed management practices on on yield and quality of Bt cotton.

9p nguathienthan8 20-10-2020 13 1   Download

A Field experiments were carried out from 2009-10 and 2010-11 to evaluate the efficiency of herbicides under different rice residue management practices in wheat. The herbicide treatments included application of sulfosulfuron alone and tank mix Sulfosulfuron 25 g/ha + metsulfuron 4 g/ha and isoproturon 1.0 kg/ha + metsulfuron 4 g/ha. Residue mulching reduced weed density, resulting in improvement of growth and yield attributing characters of wheat followed by residue incorporated and residue retained treatments.

7p nguaconbaynhay7 15-08-2020 13 1   Download

An investigation was carried out at Sher-e-Kashmir University of Agriculture Science and Technology of Jammu during 2013-14 and 2014-15, to assess the influence of 4 tillage systems and 3 weed-control practices on weed dynamics and productivity in maize-wheat cropping sequence. In maize, grain yield of maize was statistically at par in continuous conventional tillage (CT-CT) in both maize and wheat and conventional tillage in maize and zero tillage in wheat (CT-ZT).

7p angicungduoc6 20-07-2020 18 1   Download

A field experiment was carried out during the rabi season of 2011-12 and 2012-13 at Bihar Agricultural University, Sabour (Bihar) to assess the effect of integrated weed management practices on weed dynamics, productivity and nutrient uptake of maize (Zea mays L.). Results revealed that weed management practices had positive influence on growth, yield attributes, yields and nutrient uptake of maize. Significantly lower weed density, weed dry weight and weed control efficiency (WCE %) were recorded in zero tillage (ZT) compared with conventional tillage (CT).

10p angicungduoc6 20-07-2020 22 2   Download

A field experiment was conducted during kharif 2012 to evaluate the efficacy of different pre and post emergence herbicides in direct seeded rice. The chemical treatments included two pre-emergence herbicides namely pendimethalin 1000 g/ha and oxadiargyl 100 g/ha and four post-emergence herbicides viz. bispyribac-sodium 25 g/ha, fenoxaprop 67 g/ha, ethoxysulfuron 18.75 g/ha and chlorimuron-ethyl +metsulfuron-methyl RM 4 g/ha at 25 DAS. Weed free and weedy check were also included.

6p trinhthamhodang6 09-07-2020 10 2   Download

The use of organic and inorganic mulch as a soil cover is effective in improving growth and yield of chilli (Capsicum annuum L.). A field experiment was carried out at College Orchard, Department of Vegetable Crops, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore during 2013 to 2016 to study the effect of different types of mulches viz., organic mulch @ 6.0 t/ha, organic mulch @ 9.0 t/ha, organic mulch @ 12.

9p chauchaungayxua6 26-06-2020 8 1   Download

Weeds constituent one of the major economic important problem for maize growers and it can reduce yield up to 86 per cent. The magnitude of losses largely depends upon the composition of weed flora, period of crop-weed competition and its intensity. The highest weed control efficiency with lowest weed density and weed dry weight was noted in pre-emergence application of atrazine @ 1.0 kg a.i. ha-1 followed by (fb) one hand weeding (HW) at 30 DAS.

17p caygaocaolon5 27-05-2020 11 2   Download

A field experiment entitled “Efficacy of pre and post-emergence herbicides on growth and yield of chickpea (Cicer arietinum L.)” was conducted at Agricultural Research Station, Mandor, Jodhpur during rabi season of 2016-17. Field experiment was laid out in randomized block design (RBD) with sixteen treatments and replicated thrice. Sixteen treatments were tested among that two doses of each herbicides i.e. pendimethalin (0.40 and 0.60 kg a.i./ha), oxyfluorfen (100 and 200 g a.i./ha), imazethapyr (40 and 60 g a.i.

10p trinhthamhodang5 16-05-2020 13 0   Download

The present study was carried out to make a suitable forecast model that predicts yield loss occurred due to weeds in wheat crop. The data were taken from the annual report of AICRP-WM centres. Gwalior and Pusa are the two centres in which the work has been carried out. Weed density and weed dry weight were two weed infestation measurements that were considered for model fitting.

5p chauchaungayxua5 08-05-2020 11 1   Download

Trianthema portulacastrum L. (Family: Aizoaceae), commonly known as horse pursulane is a troublesome broadleaved weed in India. Aggressive growth of this type of weeds with high invasion potential it becomes an important constraint in crop cultivation. Yield losses are most severe when weeds and crops emerge simultaneously and compete with each other for resources. Crop yield usually decreases with increase in weed density and interference duration.

5p chauchaungayxua5 05-05-2020 11 2   Download

Weed management in conservation agriculture is major issues for attaining sustainable crop yields. The effect of tillage, residue and weed management practices was evaluated on weed population of Medicago sativa, Chichorium intybus, Sonchus arvensis and Physalis minima among dicots, as well as the productivity of mustard in the maize-mustard-greengram cropping system during 2015-2017.

13p nguathienthan4 18-04-2020 18 1   Download

Potato is one of the most important commercial vegetable crops in India and on an average this crop is affected by weeds damage which should be prevented by various control methods. Cultural operations and mulches are non-chemical methods of weed control in sustainable agricultural systems. The aim of present study was to investigate the effect of chemical and non-chemical control methods on weeds and yield of potato crop.

11p cothumenhmong3 22-02-2020 20 1   Download

A field experiment was conducted during the winter season of 2016-17 and 2017-18 at Agricultural Research Station (MPUAT), Banswara (Rajasthan), India to find out effective weed management strategy for enhancing the economical return of winter maize under humid condition of Southern Rajasthan. Ten treatment combinations of pre-emergence (atrazine), post-emergence (halosulfuron, 2, 4-D, tembotrione and topramezone) herbicides with weed free and weedy check laid out in randomized block design with three replications. Results revealed that pre-emergence application of atrazine 50 WP @ 0.

13p trinhthamhodang3 12-02-2020 12 0   Download

A field experiment was conducted at Main Agricultural Research Station Farm, University of Agricultural Sciences, Raichur in Hyderabad Karnataka region, to study integrated weed management in chilli (Capsicum annum L.). An experiment comprising ten treatments viz. Propaquizafop 10% EC PoE (postemergence) @ 500 ml ha-1 (50 g a.i.), Propaquizafop 10% EC PoE @ 625 ml ha-1 (62.5 g a.i.), Propaquizafop 10% EC PoE @ 750 ml ha-1 (75 g a.i.), Propaquizafop 10% EC PoE @ 1250 ml ha-1 (125 g a.i.), Pendimethalin 30% EC PRE (preemergence) @ 4160 ml ha-1 (1250 g a.i.

9p nguaconbaynhay3 07-02-2020 17 1   Download

Timely weed management is important to increase productivity in s longduration crop like pigeonpea. A field study to evaluate the effect of weed management on weed interference, nutrient depletion by weeds and production potential of long duration pigeonpea under irrigated ecosystem was conducted at Agricultural Research Farm, IAS, BHU, Varanasi during 2009-10 and 2010-11. Results revealed that use of imazethapyr @ 0.15 kg ha-1 followed by (fb) paraquat @ 0.4 kg ha-1 40 days after sowing (DAS) significantly (P ≤ 0.

14p nguaconbaynhay3 07-02-2020 30 1   Download