scholarly journals Protection of oil flax of weeds

2020 ◽  
Vol 4 (184) ◽  
pp. 38-44
Author(s):  
A.S. Bushnev ◽  
◽  
G.I. Orekhov ◽  
S.P. Podlesny ◽  
Yu.V. Mamyrko ◽  
...  
Keyword(s):  
Weed Control ◽  
Seed Yield ◽  
Plant Protection ◽  
Black Soil ◽  
The South ◽  
Yield Increase ◽  
Rostov Region ◽  
Negative Effect ◽  
3.0 T ◽  
Hand Weeding

Potential seed yield of the modern oil flax varieties is equal to 2.5–3.0 t per ha, and its real meanings in 2019 in average in Russia was 0.83 t per ha, in the Southern federal region – 0.77 t per ha. One of the reasons of such low productivity of the crop is poorly effective measures of weed control. We studied the methods of herbicides application to select the most effective ones in 2019–2020 in a zone of unstable moistening (Krasnodar) on leached black soil and in a zone of insufficient moistening of the south of Russia (Oporny settl., Rostov region) on typical black soil in sowings of oil flax varieties FLIZ and Raduga bred at VNIIMK. We established the best way of a chemical plant protection of oil flax against weeds is a separate application of the herbicides Secator Turbo, MD (0.1 I per ha) and Miura, EC (1.2 l per ha). This variant did not demonstrate a negative effect of preparations on the crop and caused yield increase up to 0.20 t per ha. Also the high flax productivity, at the level of control variant with hand weeding of crops, were stated under separate application of the herbicides Magnum and Miura, Tifi and Miura. We recommended using these methods of herbicides application in zones of unstable and insufficient moistening of the south of Russia. We do not recommend to treat the crops with the herbicide Tifi after before-soeing application of Frontier Optima or Dual Gold and with tank mixture Magnum + Miura, Tifi + Miura, Secator Turbo + Miura due to their phytotoxic impact on the crop and negative effect on the indicators of plant productivity.

Integration of Chemical and Cultural Methods for Weed Control Management in Soybean (Glycin Max. L)

2019 ◽  
Author(s):  
R L Rajput ◽  
Brajraj Singh Kasana
Keyword(s):  
Weed Control ◽  
Seed Yield ◽  
Growth Yield ◽  
Yield Attributes ◽  
Pooled Data ◽  
Cultural Methods ◽  
Weed Control Efficiency ◽  
Hand Weeding ◽  
College Farm ◽  
Control Management

A field experiment was conducted during kharif season 2012 and 2013 at Rajmata Vijayaraje Scindia Krishi Vishwa Vidhyalaya RVSKVV, College Farm Gwalior (M.P.) to asses the suiTable method for weed control in soybean. On the basis of two years pooled data results weeding twice at 20 and 40 DAS significantly highest growth, yield attributes and seed yield as compared to the un-weeded control and was at par with pendimethalin (750 g a.i./ha) + one hand weeding, trifluralin (1000 g a.i./ha) + one hand weeding at 20 DAS and imezathapyr(100 g a.i./ha) + one hand weeding at 40 DAS. These treatments also recorded lower weed dry biomassand higher weed control efficiency. Pendimethalin (750 g a.i./ha) + one hand weeding at 20 DAS resulted higher net return (` 63500) and B:C (2.58) ratio followed by trifluralin + one hand weeding and hand weeding twice at 20 and 40 DAS. In addition to hand weeding twice, pre emergence herbicide Pendimethalin (750g a,i/ha) + one hand weeding at 20 DAS can be effectively used as an alternative for controlling weeds for obtaining optimum seed yield in soybean.

scholarly journals Bioefficacy, Phytotoxicity and Economics of Post-emergence Herbicides in Moth Bean (Vigna aconitifolia) in Hot Arid Regions

2021 ◽  
Author(s):  
N.K. Jat ◽  
D.V. Singh
Keyword(s):  
Weed Control ◽  
Seed Yield ◽  
Weed Management ◽  
Arid Regions ◽  
Block Design ◽  
Resistance Index ◽  
Moth Bean ◽  
Herbicide Treatments ◽  
Hand Weeding ◽  
Clodinafop Propargyl

Background: Weed infestation is the major cause of yield loss to Kharif pulses in arid regions. Post-emergence herbicide application is a promising weed management option for pulses in these areas. Therefore, the current study was aimed to find an effective and economic post-emergence herbicide molecule for weed control in moth bean. Methods: A field experiment was conducted during 2017-2019 with different herbicides, hand weeding, weed-free and unweededs in Kharif mung bean in a randomized complete block design with three replications. Result: Among the herbicide treatments, post-emergence application of propaquizafop + imazethapyr @ 125 g a.i. ha-1 being statistically at par with clodinafop-propargyl + sodium acifluorfen @ 312.5 g a.i. ha-1 and hand weeding recorded the highest reduction in total weed dry matter (73.9%), highest weed control efficiency (73.8%) and lowest weed persistence index (1.03) compared to the unweeded. The reduction in seed yield in unweeded compared to weed-free and hand weeding was 50.8% and 42.1%, respectively. As the imazethapyr-containing herbicides caused crop phytotoxicity, significantly higher crop dry weight (513 g m-2), seed yield (5.53 q ha-1), stover yield (18.0 q ha-1), gross returns and net benefits of moth bean were recorded with clodinafop-propargyl + sodium acifluorfen (312.5 g a.i. ha-1) over other herbicide treatments. Clodinafop-propargyl + sodium acifluorfen (@312.5 g a.i. ha-1) registered the minimum value of weed index (20) and highest values of herbicide efficiency index (3.9) and crop resistance index (4.70).

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 Seed Yield and Yield Components of Sesame as Affected by Various Weed Control Methods

2020 ◽  
Vol 23 (1) ◽  
pp. 107-116
Author(s):  
J Hossain ◽  
MO Ali ◽  
MA Islam ◽  
MS Alam ◽  
MR Islam ◽  
...  
Keyword(s):  
Weed Control ◽  
Seed Yield ◽  
Variable Cost ◽  
Cost Ratio ◽  
Control Methods ◽  
Weed Biomass ◽  
Benefit Cost Ratio ◽  
Stalk Yield ◽  
Hand Weeding ◽  
Benefit Cost

Weed control strategy greatly influences on weed infestation and yield of sesame. An experiment was conducted at Regional Agricultural Research Station, Ishurdi, Pabna during Kharif-1 season of two consecutive years 2015-16 and 2016-17 to find out the suitable weed control methods in sesame. It comprises five weed control methods viz., Application of Panida (T1), Application of Panida with one hand weeding at 20 DAE (T2), One hand weeding at 20 DAE (T3), Two hand weedings at 20 and 40 DAE (T4) and Control (no weeding) (T5 ). The experiment was laid out in a randomized complete block design with three replications. Among the weed species, Cyperus rotundus and Digitaria sangunalis were the most abundant weeds. Application of Panida with one hand weeding at 20 DAE (T2) gave the lowest weed density, weed biomass and the highest weed control efficiency followed by application of Panida (T1) in both years. Weed biomass influenced negatively on plant height, number of capsule plant-1, seed yield and stalk yield. The maximum seed yield and stalk yield were also obtained from T2 which was statistically similar to T1 treatment and the minimum seed yield from T5. Economic analysis indicated that T2 gave higher gross return but T1 provided higher gross margin and benefit cost ratio. The treatment, T4 showed higher total variable cost due to the high cost of labour for hand weeding with the increase of variable cost, which affected the marginal return and benefit-cost ratio. However, based on the economic point of view, application of Panida in pre-emergence condition (T1) was a profitable and suitable weed control method in summer sown sesame. Bangladesh Agron. J. 2020, 23(1): 107-116

Herbicides for Southern Pine Seedbeds

1986 ◽  
Vol 10 (3) ◽  
pp. 152-157
Author(s):  
David B. South
Keyword(s):  
Weed Control ◽  
Methyl Bromide ◽  
Forest Nursery ◽  
The South ◽  
Southern Pine ◽  
Pine Seedlings ◽  
Nursery Management ◽  
Mineral Spirits ◽  
Forest Nurseries ◽  
Hand Weeding

Abstract Prior to 1970, nursery managers relied primarily on methyl bromide fumigation, mineral spirits, and hand-weeding for weed control. Since 1970, registration of herbicides for use in forest nurseries has been facilitated by tests conducted by the Auburn University Southern Forest Nursery Management Cooperative. Various herbicides can be applied prior to sowing, just after sowing, or after emergence of the pine seedlings. It has been estimated that for all nurseries in the South, use of these herbicides has reduced weed control costs by over two million dollars per year. This paper describes some of the herbicides that have been registered for use in southern pine nurseries. South. J. Appl. For. 10:152-57, Aug. 1986.

scholarly journals Agroecological justification of winter wheat fertilization systems in the south-west of the Central Black-soil region

2020 ◽  
Vol 175 ◽  
pp. 07005
Author(s):  
Sergey Tyutyunov ◽  
Pavel Solntsev ◽  
Alexey Stupakov ◽  
Marina Kulikova ◽  
Al Dhuhaibawi Haider Khalaf
Keyword(s):  
Winter Wheat ◽  
Plant Protection ◽  
Organic Fertilizer ◽  
Maximum Yield ◽  
Mineral Fertilizer ◽  
Black Soil ◽  
Mineral Fertilizers ◽  
The South ◽  
Black Soil Region ◽  
Fertilizer System

Under the conditions of the south-western part of the Central Black-soil region in the grain-and-plant crop rotation on the black-soil the typical maximum yield of winter wheat was 5.52 t/ha when using the organic-mineral fertilizer system as part of mineral fertilizers in the dose of N60P60K60 and manure in the dose of 40 t/ha according to the third level of plant protection (seed etching of herbicide fungicide insecticide growth substances) with maximum payback of 1 kg of mineral fertilizers with grain harvest increase – 15.5 kg. Yield increase at the 1st level of plant protection (seed etching) was 1.86 t/ha (68.1%), at the 2nd level of protection (seed etching of herbicide fungicide) – 2.55 t/ha (93.4%) and at the 3rd level of protection – 2.79 t/ha (102.2%). The highest increase from pesticides was 0.69 and 0.93 t/ha (15.0 and 20.3%), respectively. The use of such a fertilizer system is justified, in which the energy coefficient was 1.03 and 1.05. The design of an organic fertilizer system using manure does not meet the requirements of bioenergy efficiency at all levels of plant protection (Кee = 0.79-0.87).

Influence of weed management on growth and yield of groundnut (Arachis hypogaea) in gangetic plains of West Bengal, India

2016 ◽  
Author(s):  
Pabitra Adhikary ◽  
Partha Sarathi Patra ◽  
Ratikanta Ghosh
Keyword(s):  
Weed Control ◽  
Arachis Hypogaea ◽  
Seed Yield ◽  
Weed Management ◽  
Field Experiments ◽  
West Bengal ◽  
Growth And Yield ◽  
Gangetic Plains ◽  
Weed Biomass ◽  
Hand Weeding

The field experiments were carried out at Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal, India during summer seasons of 2012 and 2013, to study the effect of weed management on growth and yield of groundnut (Arachis hypogaea L.) in gangetic plains of West Bengal. Weed biomass, weed control efficiency as well as the pods plant-1, 100-seed weight, seed yield were significantly affected due to weed control treatments. Treatment receiving hand weeding twice recorded lowest weed biomass (3.44 g m-2) and highest WCE (85.09 %). Highest seed yield (1025 kg ha-1) was also recorded with hand weeding, which was significantly higher over other treatments. The results also showed that oxyfluorfen and chlorimuron-ethyl treatment applied at recommend rate were also effective in reducing the dry weight of weeds. Further the tested herbicides did not have significant effect on the crude protein and oil content in seeds.

Effect of weed control practices on weeds and yield of black gram (Vigna mungo)

2015 ◽  
Vol 38 (6) ◽  
Author(s):  
Nazma Mansoori ◽  
Nisha Bhadauria ◽  
R. L. Rajput
Keyword(s):  
Weed Control ◽  
Seed Yield ◽  
Field Investigation ◽  
Vigna Mungo ◽  
Black Gram ◽  
Net Return ◽  
Control Efficiency ◽  
Weed Control Efficiency ◽  
Hand Weeding ◽  
Number Of Seeds

Field investigation was carried out during <italic>kharif</italic> season of 2012 the results showed that unchecked weeds caused a reduction of 66.67% in black gram yield. Two hand weeding at 25 and 50 DAS recorded maximum number of pods /plant, number of seeds /pod, 1000 seeds weight, seed yield and higher weed control efficiency followed by Imazathapyr+Imazamox (premix) @ 50 g/ha PoE at 20 DAS. Imazathapyr+Imazamox (premix) @ 50 g/ha at PoE 20 DAS registered highest net return and B:C ratio followed by Imazathapyr +Pendimethalin (premix) @ 1000 g/ha PE.

Evaluation of different herbicides against weeds in mungbean (Vigna radiata L.)

2019 ◽  
Author(s):  
Lata Verma ◽  
H. S. Kushwaha
Keyword(s):  
Weed Control ◽  
Seed Yield ◽  
Dry Weight ◽  
Yield Attributes ◽  
Weed Density ◽  
Net Returns ◽  
Weed Control Efficiency ◽  
Stover Yield ◽  
Hand Weeding ◽  
Clodinafop Propargyl

A field experiment was conducted during kharif season of 2016 at Mahatma Gandhi Chitrakoot Gramodaya Vishwavidyalaya, Chitrakoot, Satna (M.P.) to study the efficacy of different herbicides against weeds in mungbean. The weed density recorded at 30 and 60 DAS was significantly lower under pendimethalin 30 EC + imazethapyr 2 EC (Ready mix) 0.75 kg/ha as pre-emergence (PE) followed by pendimethalin PE. However, significantly lower weed dry weight and statistically superior weed control efficiency were noted in twice hand weeding at 20 DAS and 40 DAS and pendimethalin + imazethapyr (R.mix.) 0.75 kg/ha at same stages of crop (30 and 60 DAS). While, yield attributes viz. pods/plant (21.8) was significantly higher in plot treated with imazethapyr 10 SL @ 40g/ha applied at 20 DAS and statistically at par with imazamox 35 WG+ imazethapyr 35 WG 60g/ha applied at 20 DAS and clodinafop - propargyl 8% + aciflourfen - sodium 16.5% (WP) 187.5 kg/ha applied at 20 DAS. Application of clodinafop - propargyl 8% + aciflourfen - sodium 16.5% (WP) 187.5 kg/ha at 20 DAS produced significantly maximum seed yield (531 kg/ha) of mungbean closely followed by imazethapyr 10 SL @ 40g/ha at (528 kg/ha) and pendimethalin 30 EC + imazethapyr 2 EC (R.mix) 0.75 kg/ha (521 kg/ha). However, stover yield (2699 kg/ha), gross returns (`58464/ha) and net returns (`43163/ha) were obtained significantly superior under clodinafop - propargyl 8% + aciflourfen - sodium 16.5% (WP) 187.5 g/ha.

THE SUCCESS OF THE LUCERNE MESSAGE IN MARLBOROUGH

1981 ◽  
pp. 179-183
Author(s):  
A.J. Cresswell
Keyword(s):  
North America ◽  
Weed Control ◽  
Seed Yield ◽  
Insect Pest ◽  
Fold Increase ◽  
Plant Spacing ◽  
Insect Pest Control ◽  
One Year ◽  
Seed Yields ◽  
New Cultivars

This paper, as well as being a testimonial to the benefit the writer has received from the Grassland Association, shows how the knowledge of scientists has been used to increase lucerne seed yields by methods of growing resistant cultivars especially for seed production as opposed to growing for hay, silage or grazing. It shows how new cultivars can be multiplied quickly by growing two crops in one year, one in each hemisphere, by using low seeding rates, wide plant spacing and very good weed control. Increased flowering of the crop has been achieved by the use of boron and the choice of time of closing; better pollination has been achieved by the use of more efficient bees - two varieties of which have been imported from North America. Weed and insect pest control and the use of a desiccant at harvest are contributing to a four-fold increase in seed yield, which should double again soon,

Sign in / Sign up

Export Citation Format

Share Document