Sequential application of pre-and post-emergence herbicides for control of complex weed flora in dry direct-seeded rice under Cauvery command area of Karnataka

2019 ◽  
Vol 51 (2) ◽  
pp. 111
Author(s):  
S.B. Yogananda ◽  
P. Thimmegowda ◽  
G. K. Shruthi
Keyword(s):  
Command Area ◽  
Weed Flora ◽  
Direct Seeded

scholarly journals Performance of sequential herbicides to control weeds in direct seeded rice

2017 ◽  
Vol 9 (3) ◽  
pp. 1324-1328
Author(s):  
Ajay Singh ◽  
D. P. Nandal ◽  
S. S. Punia
Keyword(s):  
Production Technology ◽  
College Of Agriculture ◽  
Capital Input ◽  
Weed Density ◽  
Metsulfuron Methyl ◽  
Weed Control Efficiency ◽  
Weed Flora ◽  
Broad Leaf ◽  
Direct Seeded ◽  
Chlorimuron Ethyl

Direct seeded rice is an emerging production technology in India due to less requirement of water, labour and capital input initially. But direct seeded rice face severe infestation of weeds. A field experiment was conducted during the kharif 2012 at Students’ Farm of College of Agriculture, CCS Haryana Agricultural University; Kaul campus (Kaithal) to study the performance of sequential application of herbicides on weed flora in direct seeded rice. The herbicidal treatments included two pre emergence herbicides i.e. pendimethalin 1000 g/ha and oxadiargyl 100 g/ ha and four post emergence herbicides (bispyribac sodium 25 g/ha, fenoxaprop 67 g/ha, ethoxysulfuron 18.75 g/ha and metsulfuron methyl 10% + chlorimuron ethyl 10% WP ready mix (Almix) 4 g/ha). Weed free and weedy check were also included. The results showed that grasses were the dominant weed flora (49 %) followed by sedges (34%) and broad leaf weeds (17%).Sequential application of pendimethalin 1000 g/ha fb bispyribac sodium 25 g/ha and metsulfuron methyl + chlorimuron ethyl RM (Almix) 4 g/ha gave significantly lower weed density (p=0.05) and higher weed control efficiency which resulted in more number of effective tillers (209.3), filled grains/panicle (83.7) and grain yield (3.97 t/ha).

Impact of Direct Seeded Rice in Paddy Crop under Upper Krishna Command Area

2020 ◽  
Vol 9 (1) ◽  
pp. 284-289
Author(s):  
Umesh Barikar ◽  
S.M. Kale ◽  
Ma hesh ◽  
M.Y. Kenganal
Keyword(s):  
Command Area ◽  
Direct Seeded ◽  
Paddy Crop

scholarly journals Sole and Sequential Application of Herbicide and Straw Mulch on Weed Growth and Productivity of Direct Seeded Rainfed Rice (Oryza Sativa L.)

2021 ◽  
Vol 50 (3) ◽  
pp. 671-677
Author(s):  
PK Sangramsingh ◽  
Subhaprada Dash
Keyword(s):  
Rice Straw ◽  
Oryza Sativa L ◽  
Dry Weight ◽  
Weed Density ◽  
Straw Mulch ◽  
Rainfed Rice ◽  
Weed Growth ◽  
Weed Flora ◽  
Direct Seeded ◽  
Hand Weeding

The sole and sequential application of herbicide and straw mulch on weed growth and productivity of rainfed direct seeded rice, were studied with 12 treatments during kharif 2019. Results showed that the application of oxadiargyl fb rice straw mulch @ 6 t/ha registered significantly the lowest weed density and dry weight at 60 DAS; however, it was statistically at par with oxadiargyl fb hand weeding. Weed free check produced the highest grain yield (3.05 t/ha) which was at par with the sequential application of oxadiargyl fb rice straw mulch @ 6 t/ha (2.99 t/ha) and oxadiargyl fb rice hand weeding (2.90 t/ha). Application of oxadiargyl fb rice straw mulch @ 6 t/ha fetched the maximum net return of Rs. 17528/- per ha and return per rupee invested of 1.52. Application of oxadiargyl fb rice straw mulch @ 6 t/ha could be recommended for managing complex weed flora, higher productivity and greater profit in rainfed direct seeded rice cultivation. Bangladesh J. Bot. 50(3): 671-677, 2021 (September)

scholarly journals Performance of direct seeded rice in Tungabhadra command area of Karnataka

2017 ◽  
Vol 9 (4) ◽  
pp. 2481-2484
Author(s):  
Y. M. Ramesha ◽  
Manjunath Bhanuvally ◽  
Ashok Kumar Gaddi
Keyword(s):  
Grain Yield ◽  
Large Scale ◽  
Management Practices ◽  
Agricultural Research ◽  
Command Area ◽  
Research Station ◽  
Net Returns ◽  
Transplanted Rice ◽  
Labour Requirement ◽  
Direct Seeded

A large scale demonstration was taken on direct seeded rice in four locations (one at ARS, and three at Farmers field in 50 acres each) in and around the Agricultural Research Station, Dhadesugur, University of Agricultural Sciences, Raichur, Karnataka. Our analysis showed that, the yield performance of direct seeded rice (DSR) varied with transplanted rice (TPR) and with different locations. This may be due to variety used and crop management practices adopted by the farmers. In L2, maximum grain yield was recorded in DSR (6500 kg/ha) and TPR (6200 kg/ ha) compared to other three locations. Further, the grain yield was higher in DSR compared to TPR in all the locations. Similarly, economics of DSR varied with TPR and with different locations. This may be due to yield variation at different locations. In L2, net returns and B:C ratio were higher in DSR (` 93628/ha and 3.93, respectively) and TPR (`79868/ ha and 3.0, respectively) compared to other three locations. Further, net returns and B:C ratio were higher in DSR compared to TPR. Further, 47% of the labour requirement was saved in DSR compared to TPR. Therefore, concluded that, farmers can grow rice by direct seeding instead of planting to save the labour and the expenditure.

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