Prin ISSN 0253-8040
Online ISSN 0974-8164

Indian Journal of

Weed Science

Editorial board


Dr. Sushilkumar
Directorate of Weed Research
Maharajpur, Adhartal, Jabalpur - 482004 (MP), INDIA
Mobile - +91 9425186747
Email- editorisws@gmail
Dr. A.N. Rao
Hydarabad, INDIA
Mobile Number: +91 9440372165
Email: adusumilli.narayanarao@gmail.com

Dr.J.S. Mishra
Patna, INDIA
Mobile - +91 9494240904
Email- jsmishra31@gmail.com

Editors

Dr. M.D. Reddy, (Hyderabad)
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Dr. N. Prabhakaran (Coimbatore)
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Dr. Gulshan Mahajan (Ludhiana)
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Dr. Ashok Yadav (Patna)
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Dr. Suresh Gautam (Himachal Pradesh)
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Dr. C. Sarthambal (Jabalpur)
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Dr. P. Janaki (Coimbatore)
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Email: janakibalamurugan@rediffmail.com
Dr. V.S.G.R. Naidu (Rajahmundry)
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Dr. T. Ram Prakash (Hyderabad)
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Dr. T.K. Das (New Delhi)
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Dr. K.A. Gopinath (Hyderabad)
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Email- gopinath@crida.in
Dr. Narendra Kumar (Kanpur)
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Email- nkumar.icar@gmail.com
Control of Cynodon dactylon by Mechanical and Chemical Methods
Author Name: B. SHIVARAJ, M. M. HOSAMANI AND S. V. PATIL
DOI:                  IJWS-1969-1-1&2-1 Page No:1-4
Volume: 1 1969 Full length articles
Keywords:
Abstract:

An lnvestlqatlon was carrled out to study the effect of different chemicals in combination with ploughing for the control of Cvnodon dactylon at the Agricultural College Farm, Dharwar during the year 1966-67. The herbicides tried were Dalapon, TCA and Paraquat in combination with ploughing. There was mortality of shoots and the reduction in weight of fol laq e, as well as rhizome to depth of 0-30 cm The dessication of the rhizomes occurred upto about 15 to 18 cm depth In the Dalapon treated plot. Dalapon 30 kg per ha with split applications before and after ploughing of the land gave a better control of the weed. It may be possible to control the weed more effectively with spraying of Dalapon about 2 to 3 times during the year

Address: Tnstructor in Agronomy, Assistant Professor of Agronomy" Professor of Agronomy, U, A. S., Agricultural College, Dharwar, respectively.
Email:
Weed Control in Soybean
Author Name: N.K. JAIN AND S.D. CHOUBEY
DOI:                  IJWS-1969-1-1&2-2 Page No:5-9
Volume: 1 1969 Full length articles
Keywords:
Abstract:

An experiment was conducted at the J- N. Krishl Vishwa Vidyalaya Farm, Jabalpur (M. P) with four herbicides and cultural practices in the kharif season of 1967 to determine which of the four herb-icides or cultural practices is most effective in controlling weeds in soybean crop. The yield in cultural practices was more as compared to that in herbicidal treatments, the maximum being under hoeing followed by farmer's practices. Among the herbicides, Treflan gave the highest yield followed by TOK E-25 and BV 201. Amiben gave the least yield (19.33 q/ha) out of four herbicides. Weed population per square foot was lowest in TOK E-25 plot and highest in control plot.

Address: Post graduate student and Head of the Department of Agronomy. 1. N. Agrjcultural University, Jabalpur respectively.
Email:
Effect of 2,4–Dichlorophenoxyaceticacid on the Linear Growth of Seedlings of Some Weeds
Author Name: S.N. Khosla
DOI:                  IJWS-1969-1-1&2-3 Page No:10-13
Volume: 1 1969 Full length articles
Keywords:
Abstract:

Seedlings of Achvranthes aspera L., Cassia tara L. and Ruellia tuberosa L. with their radicle and plumule were treated for 72 hours with different concentrations of 2, 4-D (acid). This herbicide inhibited the growth of seedlings of all these weeds effectively. The linear growth of the radicle and the hypocotyl was inhibited and growth of lateral roots was. also checked. Rate of inhibition of radicle and hypocotyl increased at higher concentrations. It caused swellings of the radicle and the hypocotyl of A. aspera and C. tara seedlings. No such swellings were seen in R. tuberosa- The radicle of all the three species were more susceptible to 2,4-D than the hypocotyl. 100 ppm was found lethal for A. aspera and C. tara and 200 ppm for R. tuberosa seedlings. The results were discussed with reference to the strength of the concentrations and their pH values.

 

Address: Contribution from Regir nal Research Laboratory. Jammu
Email:
Response of Herbicides on Artemisia vulgaris
Author Name: K.V. Bondale
DOI:                  IJWS-1969-1-1&2-4 Page No:14-20
Volume: 1 1969 Full length articles
Keywords:
Abstract:

The experiment was laid out on a range patch on the farm of Central Sheep & ·Wool Research Institue, Avikanagar (Rajasthan), with an object to study the response of four herbicidal preparations (Phytar-560, Bladex 'c', spontox and

Ansar-529) with three rates (low, medium and high) and two (single or double spraying) frequencies of application, on Artemisia vulgaris. The following conclusions could be drawn:-

 

1. Growth in height, vigour and seed yield was greatly reduced with the application of 'phytar-560' and 'spontox'.

2. Regeneration of plants was much lowered by harmone herbicides viz. 'spontox' and 'Bladex-c'.

3. 'Ansar-529' was not suitable herbicide to control A. vulgaris, however, the treated plants had seeds of low germination capacity.

 

4. Medium and high doses responded satisfactorily. 5. Application for the second time (at half rate of the first) was beneficial rather than first single application.

Address: Contribution from Grassland and Forage Agronomy Section, Central Sheep & Wool Research Institute, Avikanagar (Jaipur), Rajasthan.
Email:
Weeds Competition in Pearl Millet in Arid Zone as Influenced by Varieties, Doses of Nitrogen and Methods of Weed Control.
Author Name: Vijay Kumar and P. C. Raheja
DOI:                  IJWS-1969-1-1&2-5 Page No:21-30
Volume: 1 1969 Full length articles
Keywords:
Abstract:

Number and dry weight of weeds was not significantly affected by various varieties. Nitrogen fertilization showed adverse effect on weed population. Harmful effect of nitrogen doses was, however, not marked on-dry ma'ter of weeds. Weed competition, as evident from weeds population and their dry weight was practically nil in WI (hand weeded) plots. Superiority of 2,4-0 was also significant over control (No Weeding). The reduction in weed competition by 2, 4-0 was about the same (34 and 36 per cent) during 1963 and 1964 respectively. Increase in every gram of dry weight in weed per square metre reduce the grain yield by 0.09 gram per plant, Most of the broad leaved weeds were susceptible to the 2, 4-0 sprayings.

Address: Asstt. Prof. of Agronomy, P. A. V., Ludhiana and Project Mana~r, Lake Nasser, Aiwan, U. A. R, respectively
Email:
Effect of some Chemical, Mechanical and Cropping Methods of Weed Control on the Food reserves of underground organs in Cyperus rotundus L.
Author Name: Ram Gopal and V. S. Mani
DOI:                  IJWS-1969-1-1&2-6 Page No:31-40
Volume: 1 1969 Full length articles
Keywords:
Abstract:

Twelve days after the comoletlon of the treatments in the first year the dry weight of nutgrass tubers under P2C~, P4C4 and P~C4 was reduced to 67.2, 87.9 and 844 per cent as compared to PoCo in the 0-15 cm depth. The reduction in 15-:30 cm depth was to the extent of 63.0, 587 and 50.0 per cent as compared to PoCo. At maize harvest in 1964 the reduction was 75.9, 77.3 and 82.6 per cent in the 0-15 cm depth and 83.3,84.4 and 807 per cent respectively for PZC2, P4C.j, and P2Ci as compared to PoCo. Twelve days after repetition of treatments in 1965 the dry weight of nutgrass tubers under P 2C2' P 4CZ and P 4C4 was reduced to 70.4, 71.2 and 71.9 per cent in 0-15 cm depth and 97.4, 97.4 and 100.0 per cent in 15-30 cm depth as compared to PoCo At malz e harve st in 1935 th s raduction in tuber weight wa5 92.2,97.8 and 100.0 per cent in 0-15 cm depth and 94.6, 97.3 and 953 per cent as compared to PoCo. Amount of starch in the nutgrass tubers in the 0-15 cm depth under P2C2• P4C4 and P2C2 was brought down to 93. 100 and 12.2 per cent and 14 1, 164 and 14.9 p« cent, re spect ive ly 12 days attar the completion of the treatments and at maize harvest in 1964 as compared to PoCo. The amount of starch in the nutgrass tubers in 15-30 cm depth under P2CZ' P4C4 and PeC4 was brought down to 21.4, 393 and 25.9 per cent and 94,0.0 and 20.7 per cent re~pectivelv, 12 days after completion of the treatments and at maize harvest in 1964 as compared to PoCo. Twelve days after the repet itlcn of

 

Address: Associate Professor of Botany, Himachal Agricultural College, Solan and Agronomist (Weed Control), Division of Agronomy, Indian Agricultural Research Institute, New Delhi,
Email:
A comparative study of new herbicides on Cyperus rotundus and Trianthema portulacustrum.
Author Name: N. R. Bajpai, B. L. Porwal and D. K. Misra
DOI:                  IJWS-1969-1-1&2-7 Page No:41-47
Volume: 1 1969 Full length articles
Keywords:
Abstract:

The results obtained frcm the experiment conducted to control Cyperus rotundus L. andT,ianthema i.oriulacusu um chern icall y are summarised here: 1. MSMA (Ansar 529) when applied at the rate of 3'48 to 5.22 (a. e.)/ha CvpelllS roticndus was controlled effectively. The repeated applications of this weedicide will control the weed most effectively.

2. E"!,ective control of Cvperus rctundus was not obtained by the appl teation of Daiapon even at the rate of 4.5 kg (a.e.)/ha.

3. Neither MSMA nor Dalapon was effective in controlling T'rianthema.

4. Effectiveness of M~Ml\ was dscr eased when it was applied in combination with Dal apon,

 

5. Tuberization in Cvpe rus rotundus was not effectively controlled by any of the two weedicldss used either singly or in combination.

Address: The Head of the Agronomy Department, Jobner; Lectuer in Agronomy, Udaipur and Director of Extension Education, University of Udaipur (Rajasthan)
Email:
Chemical control of weeds in linseed
Author Name: O. N. Mehrotra, R. C. Garg and R. N. Tiwari
DOI:                  IJWS-1969-1-1&2-8 Page No:48-52
Volume: 1 1969 Full length articles
Keywords:
Abstract:
Address: Conu i+ui ion fr"111 Crop Physiology Section, Agriculture Department, Kanpur (U. P.).
Email:
Weed control in maize through triazine herbicides
Author Name: R. P. Singh, M. K. Moolani and N. K. Behl
DOI:                  IJWS-1969-1-1&2-9 Page No:53-62
Volume: 1 1969 Full length articles
Keywords:
Abstract:

A field experiment on the control of weeds in hybrid maize was conducted at the Research Farm of Punjab Agricultural University, Hissar during 1966-67 and 1967-68. The soil was sandy loam and the total rainfall during tha kJza'if season was less than 50 ern, The residual effect of treatments was studied on the rabi crop of wheat in 1967-68. Pre-emergence application of simazine or atrazine @ 1 kg a. i.!ha was found most effective in controlling broadleat and grassy weeds in the maize crop. These treatments gave maximum yield of maize and consequently proved to be most remunerative. The treatment of hand weeding came next to these treatments. The following crop of wheat did not suffer in its yield from simazine or atrazine application made to maize. Pre-emergence treatments of simazine and atrazine @ 1 kg a. i. I ha also increased the nitrogen uptake of the crop plant. Simazine application @ 2 kg a. L/ha proved toxic to the maize crop and reduced the yield.

Address: Agronomist (Weed Control), J. G. F. R. I. Jhansi, Professor & Head and Research Asstt, (Weed Control) Agronomy Department, Punjab Agricultural University, Hissar,
Email:
A survey of flora of field weeds of Chambal commanded area (Kota) Rajasthan
Author Name: Indu Mehta and U.B. Singh
DOI:                  IJWS-1969-1-1&2-10 Page No:63-75
Volume: 1 1969 Full length articles
Keywords:
Abstract:

A detailed collection of weeds in ten tehsils of Chambal Commanded Area, Have been listed with a statistical synopsis in the present paper. Leguminaceae, Compositeae and Gramineae make more than 1/3 of the flora, these coupled with Euphorbiaceae and Amaranthaceae cover about fifty per cent of the flora. The remaining flora is composed of thirtyeight families. Except Gramineae monocots are poorly developed. Euphorbia, Indigofera, Corchorous have more than four species. Other genera are poorly represented.

Digera, Psoralia, Celosia, Alysicarpus, Rungia, Justicia and Euphorbia are very common in kharif season. Obnoxious creeping weeds of this season are Cynotis, Merremia, Trianthema, Convolvulus and Ipomea spp. In Rabi season Chenopodium, Sonchus, T'rigonella, Medicago, and some species of Euphorbia are very common in this area. The only parasites found in the crops in this area are Striga euphr asioides and Cuscuta spp.

Certain crop weed associations need special mention because ot their severe competition with crops and further studies are required regarding the relative losses and their extent due to such competition. Wheat crop suffers

 

due to Chenopodium album, C. murale and Convolvulus arvensis, Paddy due to Ammania baccii era, Rottela denscfiora, Cyperus aristatus and Caesulia axillaris, In kharif sorghum, pluses, Til, Groundnut, in general sustain a strong competition with Digera muricata, Ru.ngia ,epens, Celosia argente a, Echinochola colonurn, Psoralea corvlii olia. Merremia emarfinl.1ta, Cyperus rotundus, d usticia quinqueangularis, Vernon; a cony zoides, Vicoa indica etc. These weeds are very common and under favourable conditions of good rainfall even total crop losses in some fields do occur due to these competitions. Selective association of Cuscuta in Lucerne. Striga in Jowar and Ipomea in sunhemp are also worth recording.

Address: Contrtbution of Department of Agriculture, Rajasthan, Jaipur. Work done under the scheme of River Valley Project-at Irrigation Research Centre Chambal Commanded area, Kota.
Email: