scholarly journals Weed Emergence and Optimum Time for Application of Herbicides in Early-Season Paddy-Rice Culture in Northern Kyushu.

1995 ◽  
Vol 40 (1) ◽  
pp. 1-7
Author(s):  
Yusuke Fukushima ◽  
Mitsuyoshi Ohkuma ◽  
Kohei Tanaka
Keyword(s):  
Paddy Rice ◽  
Optimum Time ◽  
Rice Culture ◽  
Early Season ◽  
Paddy Rice Culture ◽  
Weed Emergence

Evaluation of N and P mass balance in paddy rice culture along Kahokugata Lake, Japan, to assess potential lake pollution

2008 ◽  
Vol 6 (4) ◽  
pp. 355-362 ◽  
Author(s):  
Toshisuke Maruyama ◽  
Iwao Hashimoto ◽  
Kazuo Murashima ◽  
Hiroshi Takimoto
Keyword(s):  
Mass Balance ◽  
Paddy Rice ◽  
Rice Culture ◽  
Paddy Rice Culture

scholarly journals Mechanized paddy Rice Culture and its Labour-Saving Effect in Aomori Prefecture

1966 ◽  
Vol 1966 (2) ◽  
pp. 71-75
Author(s):  
Masao NAGANUMA ◽  
Toshimitsu KANAZAWA ◽  
Junichi KAMIDE ◽  
Rokujiro YAGIHASHI
Keyword(s):  
Paddy Rice ◽  
Rice Culture ◽  
Paddy Rice Culture ◽  
Saving Effect ◽  
Aomori Prefecture

FEASIBILITY STUDY OF TREATED SEWAGE IRRIGATION ON PADDY RICE CULTURE

2001 ◽  
Vol 36 (5) ◽  
pp. 807-818 ◽  
Author(s):  
Soon-Kuk Kwun ◽  
Chun-Gyeong Yoon ◽  
Ill-Min Chung
Keyword(s):  
Feasibility Study ◽  
Paddy Rice ◽  
Sewage Irrigation ◽  
Rice Culture ◽  
Treated Sewage ◽  
Paddy Rice Culture

Mass balance analysis in Korean paddy rice culture

2003 ◽  
Vol 1 (2) ◽  
pp. 99-106 ◽  
Author(s):  
Chun G. Yoon ◽  
Jong-Hwa Ham ◽  
Ji-Hong Jeon
Keyword(s):  
Mass Balance ◽  
Paddy Rice ◽  
Rice Culture ◽  
Balance Analysis ◽  
Paddy Rice Culture ◽  
Mass Balance Analysis

Effects of treated sewage irrigation on paddy rice culture and its soil

2001 ◽  
Vol 50 (3) ◽  
pp. 227-236 ◽  
Author(s):  
Chun G. Yoon ◽  
Soon K. Kwun ◽  
Jong H. Ham
Keyword(s):  
Paddy Rice ◽  
Sewage Irrigation ◽  
Rice Culture ◽  
Treated Sewage ◽  
Paddy Rice Culture

Herbicide Performance in Rice (Oryza sativa) under Three Flooding Conditions

Weed Science ◽  
1984 ◽  
Vol 32 (2) ◽  
pp. 157-162 ◽  
Author(s):  
Edward P. Richard ◽  
Joe E. Street
Keyword(s):  
Oryza Sativa ◽  
Drought Stress ◽  
Weed Control ◽  
Weed Competition ◽  
Yield Losses ◽  
Early Season ◽  
Rice Yields ◽  
Weed Emergence ◽  
Principal Advantage

A 3-yr study was conducted to compare the performance of several herbicides applied alone and in mixtures under three flooding conditions in dry-seeded rice (Oryza sativaL. ‘Labelle’). When the soil remained moist during the 2-week unflooded periods (1979 and 1981), weed emergence was slowed and no advantage with respect to enhanced weed control and increased rice yields could be demonstrated over that of the standard sequential propanil (3′,4′-dichloropropionanilide) application. However, in 1980 when drought stress may have reduced initial postemergence activity and weeds emerged during the 14-day unflooded periods, differences in weed control between herbicides were obtained. Results of this study also indicate that yield losses from weed competition resulted primarily from early season competition, and that the principal advantage of the residual herbicides in dry-seeded rice may be to eliminate the need for retreatment with propanil when flooding is delayed or fields are drained.

scholarly journals Floral Impotency Due to Cool Weather in Paddy Rice plants in the Early-Season Culture Area.

1991 ◽  
Vol 60 (2) ◽  
pp. 225-233 ◽  
Author(s):  
Tomio WATANABE ◽  
Yoshio TAKEICHI
Keyword(s):  
Paddy Rice ◽  
Early Season ◽  
Rice Plants ◽  
Culture Area

scholarly journals Some Considerations upon the Reason of Increase of Panicles in Number, in Early Season Cultivation of Paddy Rice.

1959 ◽  
Vol 27 (2) ◽  
pp. 182-184 ◽  
Author(s):  
Keichi SAMOTO ◽  
Katsuo SUGIMOTO ◽  
Masayoshi UDA ◽  
Kaichiro SUZUKI
Keyword(s):  
Paddy Rice ◽  
Early Season

scholarly journals Mitigation Potential and Yield-Scaled Global Warming Potential of Early-Season Drainage from a Rice Paddy in Tamil Nadu, India

Agronomy ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 202 ◽  
Author(s):  
Aung Zaw Oo ◽  
Shigeto Sudo ◽  
Kazuyuki Inubushi ◽  
Umamageswari Chellappan ◽  
Akinori Yamamoto ◽  
...  
Keyword(s):  
Global Warming ◽  
Global Warming Potential ◽  
Tamil Nadu ◽  
Rice Yield ◽  
Ghg Emissions ◽  
Paddy Rice ◽  
Wet Season ◽  
Wetting And Drying ◽  
Early Season ◽  
Ch4 Emissions

Water-intensive systems of rice cultivation are facing major challenges to increase rice grain yield under conditions of water scarcity while also reducing greenhouse gas (GHG) emissions. The adoption of effective irrigation strategies in the paddy rice system is one of the most promising options for mitigating GHG emissions while maintaining high crop yields. To evaluate the effect of different alternate wetting and drying (AWD) irrigation strategies on GHG emissions from paddy rice in dry and wet seasons, a field experiment was conducted at the Tamil Nadu Rice Research Institute (TRRI), Aduthurai, Tamil Nadu, India. Four irrigation treatments were included: One-AWD (one early drying period), Two-AWD (two early drying periods), Full-AWD (wetting and drying cycles throughout the rice season), and CF (continuous flooding). Different rice varieties were also tested in the experiment. In this study, we emphasized one factor (irrigation effect) that affects the dependent variable. The results show that early AWD treatments reduced methane (CH4) emissions by 35.7 to 51.5% in dry season and 18.5 to 20.1% in wet season, while full-AWD practice reduced CH4 emissions by 52.8 to 61.4% compared with CF. Full-AWD in dry season not only significantly reduced CH4 emission during that season, it also resulted in the decline of the early season emission in the succeeding wet season. Global warming potential (GWP) and yield-scaled GWP were reduced by early or full season AWD in both rice seasons. The GWP value from nitrous oxide (N2O) was relatively low compared to that from CH4 in both rice seasons. Rice yield was not affected by irrigation treatments although varietal differences in grain and straw yields were observed in both rice seasons. This study demonstrated that early season water managements are also effective in reducing CH4 and total GHG emissions without affecting rice yield.

Role of Edamame (Glycine max) Seed Size in Early-Season Crop–Weed Interactions

Weed Science ◽  
2018 ◽  
Vol 66 (6) ◽  
pp. 746-751 ◽  
Author(s):  
Laura E. Crawford ◽  
Martin M. Williams
Keyword(s):  
Glycine Max ◽  
Seed Size ◽  
Weed Management ◽  
Soybean Seed ◽  
Integrated Weed Management ◽  
Early Season ◽  
Weed Interference ◽  
Large Seed ◽  
Weed Emergence

AbstractEdamame [Glycine max(L.) Merr.] differs from grain-type soybean in several aspects, one being that edamame seeds are 65% to 100% larger than grain-type soybean seed. Crop seed size has implications for weed management in grain-type soybean; however, the extent to which this observation holds true for edamame is unknown. Because weed interference continues to be a barrier to domestic edamame production, the objective was to quantify the effect of edamame seed size on the crop’s ability to tolerate weed interference (CT) and the crop’s ability to suppress weeds (WSA). Five edamame cultivars plus one grain-type cultivar were each sorted to create “small” and “large” seed size classes. Seed lots were included in a split–split plot design, whereby an additional experimental factor was presence or absence of velvetleaf (Abutilon theophrastiMedik.). Crop and weed emergence and growth were monitored through 8 wk after emergence (WAE). Crop plants from large seed had higher tolerance toA. theophrastithan plants from small seed, as evidenced by crop height, area, and biomass. Edamame seed size had little effect on WSA; however, crop cultivars differentially reducedA. theophrastileaf area and biomass at 4 and 8 WAE. While both seed size and edamame cultivar influence early-season crop competitive ability, the magnitude of these factors on CT and WSA underscores the importance of considering them not as stand-alone tactics but rather as useful additions to a more comprehensive integrated weed management system.

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