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Author M Mishra |
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Refine your searchEffect of methods of crop establishment and weed management on Grain yield of rice and wheat in rice-wheat system / AK Gautam
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Title : Effect of methods of crop establishment and weed management on Grain yield of rice and wheat in rice-wheat system Material Type: printed text Authors: AK Gautam, Editor ; NP Adhikari, Author ; M Mishra, Author ; R.B Das, Author Publication Date: 2010 Pagination: 392-396 p. Abstract: Rice-wheat system is a labor intensive due to high cost in land preparation and plant establishment, and the productivity of this
system is either declining of stagnant. An alternative crop establishment method is needed for both the crops particularly in system
basis to reduce the cost of cultivation and to sustain the productivity. Therefore, an experiment was conducted to study the effect of
methods of crop establishments, rice varieties and weed management on productivity of rice and wheat in rice-wheat system during
2004/05 and 2005/06, respectively, at National Rice Research Program, Hardinath. Method of crop establishment was laid out in
main-plots and rice varieties and weed control methods were in sub-plots in split plot design. All the crop establishment combination
in rice-wheat system produced similar yield in the pattern. But dry weed weight at 25 days after transplanting (DAT) of rice and at
wheat maturity was significantly higher in bed planting combination of rice and wheat. Weed control methods did not differ in grain
yield of rice but wheat yield was significantly higher (2,532 kg/ha) due to use of Isoproturan + 2, 4-D both @ 1.5 kg a. i.lha than no
weeding (2,142 kg/ha). Weed dry weight in rice was significantly lower at 25 days after transplanting of rice due to Butachlor spray
+Hand weeding (HW) at 25 DAT than HW at 25 and 45 DAT. Similarly, use ofherbicides reduced weed weight in wheat compared
to no weeding.Link for e-copy: http://elibrary.narc.gov.np/?r=1042 Effect of methods of crop establishment and weed management on Grain yield of rice and wheat in rice-wheat system [printed text] / AK Gautam, Editor ; NP Adhikari, Author ; M Mishra, Author ; R.B Das, Author . - 2010 . - 392-396 p.
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Abstract: Rice-wheat system is a labor intensive due to high cost in land preparation and plant establishment, and the productivity of this
system is either declining of stagnant. An alternative crop establishment method is needed for both the crops particularly in system
basis to reduce the cost of cultivation and to sustain the productivity. Therefore, an experiment was conducted to study the effect of
methods of crop establishments, rice varieties and weed management on productivity of rice and wheat in rice-wheat system during
2004/05 and 2005/06, respectively, at National Rice Research Program, Hardinath. Method of crop establishment was laid out in
main-plots and rice varieties and weed control methods were in sub-plots in split plot design. All the crop establishment combination
in rice-wheat system produced similar yield in the pattern. But dry weed weight at 25 days after transplanting (DAT) of rice and at
wheat maturity was significantly higher in bed planting combination of rice and wheat. Weed control methods did not differ in grain
yield of rice but wheat yield was significantly higher (2,532 kg/ha) due to use of Isoproturan + 2, 4-D both @ 1.5 kg a. i.lha than no
weeding (2,142 kg/ha). Weed dry weight in rice was significantly lower at 25 days after transplanting of rice due to Butachlor spray
+Hand weeding (HW) at 25 DAT than HW at 25 and 45 DAT. Similarly, use ofherbicides reduced weed weight in wheat compared
to no weeding.Link for e-copy: http://elibrary.narc.gov.np/?r=1042 E-copies
http://nkcs.org.np/narc/dl/?r=1042URL
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Title : Effect of seedling age and spacing on productivity of irrigated rice under system of rice intesificaiton in central terai Material Type: printed text Authors: AK Gautam, Editor ; NP Adhikari, Author ; M Mishra, Author ; R.B Das, Author Publication Date: 2010 Pagination: 397-401 p. Abstract: System of rice intensification (SRI), practically considered as an agrological approach rather than a technology, has received a fair
amount of attention in recent year in most of the rice growing countries. Transplanting of younger seedlings in wider spacing is the
practice to be followed in SRI. But the literature indicated different age of seedlings and various plant spacing for this system of rice
cultivation. Therefore, an experiment was conducted in split plot design with plant spacing in square pattern (20x20, 25x25, 30x30
and 40x40 em) as main-plots and age of seedlings (10,15 and 20 days) as sub-plots with three replications in 2004 and 2005 with
some modifications in other practices. The statistical analysis revealed that days to heading, days to maturity, number of tillers/hill at
30 OAT, per cent of filled grains/panicle and 1000 grain weight were not affected by the spacing. But, panicles/hill at maturity was
significantly higher under wider spacing of 40x40 em (18.2) than other spacing but panicles/unit area was remarkably lowest (114).
Younger seedlings of 10 days old matured earlier and produced significantly higher number of panicles/m2 (186) with lower filled
grains/panicle than older seedlings. The interactive effect of decreasing number of panicle number/m2 and filled grains/panicle from
closer to wider spacing and younger to older seedlings resulted in non-significant differences in grain yield during both years of
study. The overall result suggested that rice seedling from 10 to 20 days old can be transplanted in square pattern of20, 25, 30 and
40 em spacing.Link for e-copy: http://elibrary.narc.gov.np/?r=1043 Effect of seedling age and spacing on productivity of irrigated rice under system of rice intesificaiton in central terai [printed text] / AK Gautam, Editor ; NP Adhikari, Author ; M Mishra, Author ; R.B Das, Author . - 2010 . - 397-401 p.
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Abstract: System of rice intensification (SRI), practically considered as an agrological approach rather than a technology, has received a fair
amount of attention in recent year in most of the rice growing countries. Transplanting of younger seedlings in wider spacing is the
practice to be followed in SRI. But the literature indicated different age of seedlings and various plant spacing for this system of rice
cultivation. Therefore, an experiment was conducted in split plot design with plant spacing in square pattern (20x20, 25x25, 30x30
and 40x40 em) as main-plots and age of seedlings (10,15 and 20 days) as sub-plots with three replications in 2004 and 2005 with
some modifications in other practices. The statistical analysis revealed that days to heading, days to maturity, number of tillers/hill at
30 OAT, per cent of filled grains/panicle and 1000 grain weight were not affected by the spacing. But, panicles/hill at maturity was
significantly higher under wider spacing of 40x40 em (18.2) than other spacing but panicles/unit area was remarkably lowest (114).
Younger seedlings of 10 days old matured earlier and produced significantly higher number of panicles/m2 (186) with lower filled
grains/panicle than older seedlings. The interactive effect of decreasing number of panicle number/m2 and filled grains/panicle from
closer to wider spacing and younger to older seedlings resulted in non-significant differences in grain yield during both years of
study. The overall result suggested that rice seedling from 10 to 20 days old can be transplanted in square pattern of20, 25, 30 and
40 em spacing.Link for e-copy: http://elibrary.narc.gov.np/?r=1043 E-copies
http://nkcs.org.np/narc/dl/?r=1043URL
