Control of complex weed flora in direct-seeded and transplanted rice (Oryza sativaL.) with early post-emergence herbicide

A field experiment was conducted at the Crop Research Centre of Govind Ballabh Pant University of Agriculture and Technology Pantnagar, Udham Singh Nagar during continuous two years to study the weed flora, yield and nutrient uptake of wheat (Triticum aestivum L.) under different wheat establishment methods in main plots and seven weed management in sub plots. Phalaris minor was the most dominant weed at 60 DAS contributed 55.0 per cent of total weed population. Melilotusindica was the major non grassy weeds in wheat which contributed 11 per cent to total weed population during respective years. Sowing of wheat with zero tillage significantly reduced the Phalaris minor density as compared to conventionally tilled wheat after transplanted rice, 60 per cent Phalaris minor emerged from 0-3 cm in reduced and conventional tillage where as in zero tillage after transplanted rice there was 55 per cent emergence from 0-3 cm layer.The highest grain yield was obtained in two hand weedings done at 30 and 60 DAS and was at par with Isoproturon 1.0 kg ha-1 + Metsulfuron methyl 4 g ha-1 at 30 DAS and Clodinafop – Propargyl 60 g ha-1 at 30 DAS fb. Metsulfuron methyl 4 g ha-1 at 37 DAS. Zero tillage resulted in significantly higher uptake of NPK by wheat plants as compared to conventional tillage, whereas reduced tillage recorded minimum NPK, which was significantly lower over the other treatments of wheat establishment methods.

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Adoption Status of Direct Seeded Rice Technology by the Farmers of Punjab

10.48165/ijee.2022.58117 ◽

2022 ◽

Vol 58 (1) ◽

pp. 76-80

Author(s):

Ramandeep Kamboj ◽

Dharminder Singh ◽

Lakhwinder Kaur

Keyword(s):

Rice Crop ◽

New Technique ◽

Nutrient Deficiencies ◽

Climatic Regions ◽

Transplanted Rice ◽

Direct Seeded ◽

Recommended Practices ◽

A New Technique ◽

Paddy Cultivation

Direct-seeded rice (DSR) is a possible alternative to conventional puddled transplantedrice, where rice crop is seeded directly in non-puddled fields. The study was conducted toascertain the adoption status of recommended practices of DSR. Personal interviews wereconducted to collect data from randomly selected 210 farmers from three districtsrepresenting different agro-climatic regions of Punjab. Study revealed that selected farmershad adopted DSR on 49.20 per cent of their total area under paddy cultivation. Slightlyhigher number of selected farmers had adopted Tar-Wattar, a new technique of DSR overdry soil method. Only 18.52 per cent respondents had applied first irrigation as perrecommendations of Tar-Wattar method, whereas majority (67.59%) had applied firstirrigation before 21 days. 26.67 per cent farmers had adopted most suitable variety PR-126 and sown it at recommended time. However, in case of other varieties, majority offarmers did not follow recommended time of sowing. A smaller number of farmers haveapplied zinc, iron and sulphur fertilizers to ameliorate micro nutrient deficiencies. Averageyield of others varieties and PR 126 were found to be nearly identical, but due to lessercost of cultivation in DSR as compared to transplanted rice, adopter farmers’ fetched highernet return.

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Bio-efficacy of pre and post-emergence herbicides for control of complex weed flora in transplanted rice (Oryza sativa L.)

International Journal of Chemical Studies ◽

10.22271/chemi.2020.v8.i2aj.9100 ◽

2020 ◽

Vol 8 (2) ◽

pp. 2348-2351

Author(s):

Raghubar Sahu ◽

Dharmendra Kumar ◽

Jubuli Sahu ◽

Kumari Sharda ◽

RK Sohane

Keyword(s):

Oryza Sativa ◽

Oryza Sativa L ◽

Transplanted Rice ◽

Weed Flora

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Performance of sequential herbicides to control weeds in direct seeded rice

Journal of Applied and Natural Science ◽

10.31018/jans.v9i3.1361 ◽

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).

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Dissipation of Pendimethalin in Soil Under Direct Seeded and Transplanted Rice Field

Bulletin of Environmental Contamination and Toxicology ◽

10.1007/s00128-019-02767-y ◽

2019 ◽

Vol 104 (2) ◽

pp. 293-300

Author(s):

Amanpreet Makkar ◽

Pervinder Kaur ◽

Paawan Kaur ◽

Makhan S. Bhullar

Keyword(s):

Rice Field ◽

Transplanted Rice ◽

Direct Seeded

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Nitrogen Fertilization of Direct‐Seeded Flooded vs. Transplanted Rice: II. Interactions among Canopy Properties

Crop Science ◽

10.2135/cropsci1990.0011183x003000060025x ◽

1990 ◽

Vol 30 (6) ◽

pp. 1284-1292 ◽

Cited By ~ 38

Author(s):

M. Dingkuhn ◽

H. F. Schnier ◽

S. K. De Datta ◽

K. Dörffling ◽

C. Javellana ◽

...

Keyword(s):

Nitrogen Fertilization ◽

Transplanted Rice ◽

Direct Seeded

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Nitrogen Fertilization of Direct‐Seeded Flooded vs. Transplanted Rice: I. Nitrogen Uptake, Photosynthesis, Growth, and Yield

Crop Science ◽

10.2135/cropsci1990.0011183x003000060024x ◽

1990 ◽

Vol 30 (6) ◽

pp. 1276-1284 ◽

Cited By ~ 66

Author(s):

H. F. Schnier ◽

M. Dingkuhn ◽

S. K. De Datta ◽

K. Mengel ◽

J. E. Faronilo

Keyword(s):

Nitrogen Uptake ◽

Nitrogen Fertilization ◽

Growth And Yield ◽

Transplanted Rice ◽

Direct Seeded

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Direct Seeded Rice: A New Technology for Enhanced Resource-Use Efficiency

International Journal of Applied Sciences and Biotechnology ◽

10.3126/ijasbt.v6i3.21174 ◽

2018 ◽

Vol 6 (3) ◽

pp. 181-198 ◽

Cited By ~ 2

Author(s):

Bishal Bista

Keyword(s):

Traditional Method ◽

Nutrient Use Efficiency ◽

Soil Surface ◽

Rice Cultivation ◽

Blast Disease ◽

Food Crop ◽

Good Opportunity ◽

Transplanted Rice ◽

Direct Seeded ◽

Use Efficiency

Rice (Oryza sativaL.) is a major staple food crop that feeds around 60% of the world’s population. It is a major food crop in terms of production, economy and is grown in all ecological zones of Nepal. In Nepal, traditional method of rice cultivation is widely accepted in which 20-25 days old seedlings are transplanted in the puddled field. Looming water scarcity, water-intensive traditional method of rice cultivation, escalating labour costs pressurize the development of alternative which is highly sustainable and profitable. Direct-seeded rice (DSR) offers a very good opportunity that can cope up the global need and reduces the water use to 50%, labour cost to 60% and increases productivity by 5-10%. It involves sowing of pre-germinated seeds into wet soil surface (wet seeding), dry soil surface (dry seeding) and standing water (water seeding). Weeds are the major constraint in direct-seeded rice (DSR) reducing the crop yield upto 90% and sometimes even crop failure. Enhanced nutrient use efficiency and integrated weed management can produce comparable yields to that of transplanted rice (TPR) encouraging many farmers to switch to DSR. Methane gas emission is significantly lower in DSR than in conventionally tilled puddled transplanted rice mitigating the world’s threat of global warming. Blast disease and root-knot nematode (RKN) are other important problems associated with DSR. Based on the evidences collected, the article reviews integrated package of cultivation technologies associated with DSR, advantages, constraints and likeliness of DSR to be the future of rice cultivation in Nepal.Int. J. Appl. Sci. Biotechnol. Vol 6(3): 181-198

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