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

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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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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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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Foliar Manganese Supply Enhances Crop Productivity, Net Benefits, and Grain Manganese Accumulation in Direct-Seeded and Puddled Transplanted Rice

Journal of Plant Growth Regulation ◽

10.1007/s00344-020-10209-x ◽

2020 ◽

Cited By ~ 1

Author(s):

Usman Zulfiqar ◽

Saddam Hussain ◽

Muhammad Ishfaq ◽

Nauman Ali ◽

Muhammad Umair Yasin ◽

...

Keyword(s):

Crop Productivity ◽

Transplanted Rice ◽

Direct Seeded ◽

Net Benefits

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Status of Insect Pests and Natural Enemies of Direct Seeded and Transplanted Rice

Mapana Journal of Sciences ◽

10.12723/mjs.35.2 ◽

2017 ◽

Vol 14 (4) ◽

pp. 11-29

Author(s):

K N Ashrith

Keyword(s):

Natural Enemies ◽

Insect Pests ◽

Stem Borer ◽

Cnaphalocrocis Medinalis ◽

Green Leafhopper ◽

Yellow Stem Borer ◽

Transplanted Rice ◽

Rice Leaf Folder ◽

The Status ◽

Direct Seeded

Studies were conducted on the status of insect-pests and natural enemies of direct seeded rice (DSR) in comparison with puddled transplanted rice (PTR) during rabi and kharif in 2013-14. The rice leaf folder and yellow stem required both the seasons. Maximum leaf folder Cnaphalocrocis medinalis (Guenee) (13.03%) damage and yellow stem borer damage (13.49%) of white ears was recorded during last week of October and second week of November in DSR under unprotected situation respectively. While sucking pests population mainly green leafhopper incidence was comparatively high in PTR (3.29 and 4.92/hill) also plant hoppers incidence (BPH and WBPH) (28.90 and 18.44 adults/hill) under unprotected situation during two seasons respectively. Population of predators at both the season remained high throughout the study period in PTR than the DSR except

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Methane and nitrous oxide emissions from direct-seeded and seedling-transplanted rice paddies in southeast China

Plant and Soil ◽

10.1007/s11104-013-1878-7 ◽

2013 ◽

Vol 374 (1-2) ◽

pp. 285-297 ◽

Cited By ~ 32

Author(s):

Shuwei Liu ◽

Yaojun Zhang ◽

Feng Lin ◽

Ling Zhang ◽

Jianwen Zou

Keyword(s):

Nitrous Oxide ◽

Nitrous Oxide Emissions ◽

Rice Paddies ◽

Southeast China ◽

Transplanted Rice ◽

Direct Seeded

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Impact of weedy rice populations on the growth and yield of direct-seeded and transplanted rice

Weed Biology and Management ◽

10.1111/j.1445-6664.2007.00241.x ◽

2007 ◽

Vol 7 (2) ◽

pp. 97-104 ◽

Cited By ~ 16

Author(s):

QIAN JIN CAO ◽

BO LI ◽

ZHI PING SONG ◽

XING XING CAI ◽

BAO-RONG LU

Keyword(s):

Growth And Yield ◽

Weedy Rice ◽

Transplanted Rice ◽

Direct Seeded

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Diurnal and Developmental Changes in Canopy Gas Exchange in Relation to Growth in Transplanted and Direct-Seeded Flooded Rice

Functional Plant Biology ◽

10.1071/pp9900119 ◽

1990 ◽

Vol 17 (2) ◽

pp. 119 ◽

Cited By ~ 37

Author(s):

M Dingkuhn ◽

HF Schnier ◽

SKD Datta ◽

E Wijangco ◽

K Dorffling

Keyword(s):

Vapour Pressure Deficit ◽

Co2 Assimilation ◽

Tiller Number ◽

Planting Density ◽

Dry Matter Accumulation ◽

Light Saturation ◽

Area Index ◽

Flooded Rice ◽

Transplanted Rice ◽

Direct Seeded

Transplanted and direct-seeded flooded rice were compared in a field experiment using identical planting density and geometry. Leaf area index (LAI), plant dry weight, and tiller number were determined at 7-14 d intervals from seeding to maturity. Canopy CO2 and H2O exchange were measured using a mobile depletion-chamber system which requires 1-1.5 minutes per measurement. The canopy CO2 assimilation rates confirmed the plant dry matter accumulation observed. Diurnal measurements of net CO2 assimilation and night respiration indicated a mild midday/afternoon depression that depended on the atmospheric vapour pressure deficit (VPD). Light response of canopy CO2 assimilation exhibited light saturation at full daylight when LAI was lower than 1. No light saturation was observed at higher LAI. Transplanting shock in transplanted rice reduced net assimilation rates and delayed foliage expansion and tillering by 15 days. Crop development was retarded by 7 days. Uninhibited growth of direct-seeded rice during the vegetative stage led to superior biological yield and tiller number at maturity while grain yield was equal to that of transplanted rice. Potential yield increase in direct-seeded flooded rice is discussed on the basis of growth kinetics and assimilate source/sink relationships.

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Response of Drought Tolerant Rice (Oryza sativa L.) Varieties under Various Methods of Establishment in Drought-prone Condition of Bihar

Current Journal of Applied Science and Technology ◽

10.9734/cjast/2019/v37i630334 ◽

2019 ◽

pp. 1-6

Author(s):

Rajeev Singh ◽

Ravi Ranjan Kumar ◽

Nityanand . ◽

R. K. Sohane ◽

Anjani Kumar Singh ◽

...

Keyword(s):

Oryza Sativa L ◽

Cost Ratio ◽

Rice Varieties ◽

Yield Attributes ◽

Net Return ◽

Benefit Cost Ratio ◽

Transplanted Rice ◽

Drought Tolerant ◽

Direct Seeded ◽

Benefit Cost

A field experiment was conducted at Krishi Vigyan Kendra, Aurangabad and in farmers’ field during rainy seasons of 2013, 2014 and 2015, to Performance of drought tolerant rice varieties under various methods of stand establishment in rainfed drought-prone condition of Bihar. Experiment was laid out in a split-plot design with 3 methods of establishment i.e. broad coasting, direct seeded rice (DSR), and transplanted rice (TPR), and two varieties viz. Sahbhagiedhan, SushkeSamrat in a total of 5 replications including four at KVK, Aurangabad and one at farmers’ field during three years. Direct seeding of rice (DSR) with ZTD machine produced significantly higher plant height, number of tillers/m2, panicles/m2, grains/panicle, filled grains/panicle. However panicle length and Panicle weight were recorded maximum with to transplanting method over Direct seeded rice with ZTD machine and broad coasting. 1000grain weight was recorded significantly maximum with Direct seeded rice with ZTD machine and transplantinh over broad coasting. Direct seed produced 7.60% and 30.95% more yield in 2014, 7.88% and 32.10% more yield in 2014 and 12.00% and 30.23% more yield in 2016 over transplanted and broad coasting rice, respectively. Net return and benefit-cost ratio were also significantly higher in direct seeded rice with ZTD machine than transplanted rice and broad coasting of rice. Amongst the varieties of rice, Sushk Samrat produced significantly higher yield attributes viz., tillers/m2, panicles/m2, grains/panicle, filled grains/panicle and 1000-grain weight, and subsequently produced grain yield higher by 13.42 in 2014, 10.10% in 2015 and by 7.03% in 2016 over Sahbhagie dhan. Net return and benefit-cost ratio were also recorded significantly higher with Sushk Samrat than Sahbhagiedhan.

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