Suppression of Red Rice (Oryza sativa) Seed Production with Fluazifop and Quizalofop

Weed Science ◽  
1988 ◽  
Vol 36 (6) ◽  
pp. 800-803 ◽  
Author(s):  
Frederick P. Salzman ◽  
Roy J. Smith ◽  
Ronald E. Talbert
Keyword(s):  
Oryza Sativa ◽  
Seed Production ◽  
Field Research ◽  
Growth Stages ◽  
Red Rice ◽  
Rice Plants ◽  
Stages Of Growth ◽  
Sequential Treatments ◽  
Earlier Application ◽  
Effective Treatments

Field research was conducted in 1985 and 1986 to compare the efficacy of fluazifop and quizalofop on production of panicles and seeds of red rice. Single and first sequential treatments were applied to red rice in the early-tillering, midtillering, and panicle initiation stages of growth. Sequential treatments were applied 14 days after each earlier application to red rice in the midtillering, late-tillering, and early-heading growth stages, respectively. Both herbicides were applied singly or sequentially at 70, 140, and 280 g/ha. Sequential applications of fluazifop and quizalofop at 280 g/ha caused the greatest reduction of red rice panicle and seed production. Fluazifop at 280 g/ha applied sequentially reduced panicle production 75 to 80% and seed production 80%; 140 g/ha applied sequentially reduced seed production 83%. Quizalofop at 280 g/ha applied sequentially reduced panicle production 75 to 100% and seed production 91%. Sequential applications of either herbicide applied to red rice plants in the panicle initiation and early-heading growth stages were the most effective treatments.

scholarly journals Piper caninum blume leaf extract and compost to suppress blast disease and increase the production of bali red rice (oryza sativa) in green house

2019 ◽  
Vol 5 (4) ◽  
pp. 46-54 ◽  
Author(s):  
Ni Luh Suriani
Keyword(s):  
Oryza Sativa ◽  
Crop Yield ◽  
Leaf Extract ◽  
Organic Fertilizer ◽  
Field Research ◽  
Blast Disease ◽  
Red Rice ◽  
The Right ◽  
The Impact ◽  
The Village

The parameters developed in organic farming are the use of vegetable pesticides and compost and liquid organic fertilizer. Some research has been done but it needs deeper research to get the right product. The purpose of this study was to determine the inhibitory activity of Piper caninum extract against the fungus Pyricuaria oryzae causing blast disease in rice, and to find out how much the impact of compost on increased crop yield after being combined with the extract. This research is a field research located in the village of Senganan, Penebel Tabanan Bali. With the following treatment Fo = control (100% soil). F1 = (soil 90% + compost 10% + extract 0.5%). F2 = (soil 80% + compost 20% + extract 1%) F3 = (soil 70% + 30% + extract 1.5%). F4 = (soil 60% + compost 40% + 2% extract), do repeat 4 times. The results showed that P. caninum extract effectively inhibited blast disease and could reduce the intensity of blast disease. The combination with compost can significantly increase yields (67.62%), reduce empty grains, and increase rice size.

Growth Regulator Herbicides Prevent Invasive Annual Grass Seed Production

2010 ◽  
Vol 3 (1) ◽  
pp. 12-16 ◽  
Author(s):  
Matthew J. Rinella ◽  
Marshall R. Haferkamp ◽  
Robert A. Masters ◽  
Jennifer M. Muscha ◽  
Susan E. Bellows ◽  
...  
Keyword(s):  
Plant Growth ◽  
Seed Production ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Cereal Crops ◽  
Growth Stages ◽  
Internode Elongation ◽  
Annual Grass ◽  
Stages Of Growth ◽  
Late Growth

AbstractAuxinic herbicides, such as 2,4-D and dicamba, that act as plant growth regulators are commonly used for broadleaf weed control in cereal crops (e.g., wheat, barley), grasslands, and noncroplands. If applied at late growth stages, while cereals are developing reproductive parts, the herbicides can reduce seed production. We tested whether growth regulators have this same effect on the invasive annual grass Japanese brome. The herbicides 2,4-D, dicamba, and picloram were applied at typical field use rates to Japanese brome at various growth stages in a greenhouse. Picloram reduced seed production nearly 100% when applied at the internode elongation, boot, or heading stages of growth, whereas dicamba appeared to be slightly less effective and 2,4-D was much less effective. Our results indicate it may be possible to control Japanese brome by using growth regulator herbicides to reduce its seed production, thereby depleting its short-lived seed bank.

Genetic Analysis of Glufosinate Resistance in Crosses Between Transformed Rice (Oryza sativa) and Red Rice (Oryza sativa)

1998 ◽  
Vol 12 (2) ◽  
pp. 209-214 ◽  
Author(s):  
Sujatha Sankula ◽  
Michael P. Braverman ◽  
James H. Oard
Keyword(s):  
Oryza Sativa ◽  
Genetic Analysis ◽  
Bar Gene ◽  
Red Rice ◽  
Rice Plants ◽  
Ammonia Accumulation ◽  
Controlled Crosses ◽  
Dip Test ◽  
Made In

Reciprocal controlled crosses were made in the greenhouse between Gulfmont rice transformed with the bialaphos resistance (BAR) gene and red rice and BAR-transformed Koshihikari rice and red rice to assess the inheritance of glufosinate resistance. All F1 plants were resistant to 2.2 kg ai/ha glufosinate. Ammonia accumulation as a measure of glufosinate resistance in the F1 hybrids was assayed at 4 and 8 days after treatment (DAT). Ammonia accumulation in hybrids 4 DAT was similar to glufosinate treated, transformed rice, while treated nontransformed plants accumulated 14 to 23 times more ammonia compared with the hybrids. The nature of inheritance of glufosinate resistance in F2 rice plants was studied by a glufosinate dip test, a spray test, and ammonia assay. All three tests confirmed that glufosinate resistance, as influenced by the BAR gene, segregated in a 3 (resistant): 1 (susceptible) ratio.

Red Rice (Oryza sativa) Control and Suppression in Rice (O. sativa)

1991 ◽  
Vol 5 (4) ◽  
pp. 811-816 ◽  
Author(s):  
Sam L. Kwon ◽  
Roy J. Smith ◽  
Ronald E. Talbert
Keyword(s):  
Oryza Sativa ◽  
Plant Growth ◽  
Grain Quality ◽  
Field Experiments ◽  
Red Rice ◽  
Two Cultures ◽  
The Two Cultures ◽  
Rice Yields ◽  
Sequential Treatments ◽  
High Yields

Two field experiments were conducted from 1986 to 1988 to determine efficacy of herbidices and plant growth regulators for red rice control and suppression in water- and drill-seeded rice. Molinate applied PPI with fenoxaprop applied at panicle initiation (PI) of rice controlled 94 and 86% of red rice in water- and drill-seeded rice, respectively, compared with 79 and 49%, respectively, for molinate PPI alone in the two cultures. Although this treatment injured rice slightly (< 30%), rice so treated produced high yields with improved grain quality. Sequential treatments of molinate PPI followed by sethoxydim applied at PI or amidochlor applied at > 90% heading produced comparable rice yields with improved red rice control or suppression and grain quality in both cultures, compared with PPI molinate. Drill-seeded rice treated with molinate PPI followed by fenoxaprop applied at late boot or MH (maleic hydazide) applied 7 d after heading produced higher yield than rice treated with molinate PPI.

Herbicides for Control ofLeptochloa panicoidesin Water-Seeded Rice

Weed Science ◽  
1975 ◽  
Vol 23 (1) ◽  
pp. 36-39 ◽  
Author(s):  
R. J. Smith
Keyword(s):  
Acetic Acid ◽  
Oryza Sativa ◽  
Single Application ◽  
Grain Yields ◽  
Herbicide Treatments ◽  
Sequential Treatments ◽  
Effective Treatments

Postemergence herbicide treatments that controlled tighthead sprangletop [Leptochloa panicoides(Presl) Hitchc.] and redstem (Ammannia auriculataWilld.), did not injure water-seeded rice (Oryza sativaL.), and substantially improved grain yields included: (a) a single application of propanil (3′,4′-dichloropropionanilide) at 4.5 kg/ha applied to weeds 8- to 10-cm tall; (b) two sequential treatments of propanil each at 3.4 kg/ha, with the first treatment applied to weeds 2- to 5-cm tall, and a second treatment applied 4 to 8 days later; (c) a tank mixture of propanil at 3.4 kg/ha and 2,4,5-T [(2,4,5-trichlorophenoxy)acetic acid] at 0.6 kg/ha, applied to weeds 8- to 10-cm tall; and (d) a tank mixture of propanil and molinate (S-ethyl hexahydro-1H-azepine-1-carbothioate), each at 2.2 kg/ha, applied to weeds 8- to 10-cm tall. Treatments that controlled tighthead sprangletop or redstem unsatisfactorily or inconsistently and did not improve grain yields as much as more effective treatments included: preplant or postemergence treatments of molinate, or preplant treatments of nitrofen (2,4-dichlorophenyl-p-nitrophenyl ether), fluorodifen (p-nitrophenylα,α,α-trifluoro-2-nitro-p-tolyl ether), CNP (2,4,6-trichlorophenyl-p-nitrophenyl ether), or He-314 (p-nitrophenyl-m-tolyl ether).

Control and Seedhead Suppression of Red Rice (Oryza sativa) in Soybeans (Glycine max)

1989 ◽  
Vol 3 (2) ◽  
pp. 238-243 ◽  
Author(s):  
Frederick P. Salzman ◽  
Roy J. Smith ◽  
Ronald E. Talbert
Keyword(s):  
Oryza Sativa ◽  
Soil Moisture ◽  
Glycine Max ◽  
Plant Growth ◽  
Growth Regulators ◽  
Moisture Stress ◽  
Growth Stages ◽  
Red Rice ◽  
Soil Moisture Stress ◽  
High Soil Moisture

Experiments were conducted in 1985 and 1986 at three locations in eastern Arkansas to evaluate red rice control in soybeans with postemergence grass herbicides and plant growth regulators applied singly or sequentially at early to late-tillering growth stages of red rice. Haloxyfop at 0.21 kg ai/ha and quizalofop at 0.14 kg ai/ha applied singly or sequentially and fluazifop at 0.21 kg ai/ha applied sequentially consistently controlled red rice and suppressed seedhead production in soybeans. Mid-season treatments were not beneficial when high soil moisture stress conditions existed. Mefluidide or sethoxydim applied singly or sequentially or amidochlor applied singly provided erratic control and seedhead suppression of red rice in soybeans.

scholarly journals Gluconacetobacter diazotrophicus Changes The Molecular Mechanisms of Root Development in Oryza sativa L. Growing Under Water Stress

2020 ◽  
Vol 21 (1) ◽  
pp. 333 ◽  
Author(s):  
Renata Silva ◽  
Luanna Filgueiras ◽  
Bruna Santos ◽  
Mariana Coelho ◽  
Maria Silva ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Drought Stress ◽  
Root Growth ◽  
Root Development ◽  
Molecular Mechanisms ◽  
Oryza Sativa L ◽  
Gluconacetobacter Diazotrophicus ◽  
Red Rice ◽  
Bacterial Inoculation ◽  
Rice Plants

Background: Inoculation with Gluconacetobacter diazotrophicus has shown to influence root development in red rice plants, and more recently, the induced systemic tolerance (IST) response to drought was also demonstrated. The goal of this study was to evaluate the inoculation effect of G. diazotrophicus strain Pal5 on the amelioration of drought stress and root development in red rice (Oryza sativa L.). Methods: The experimental treatments consist of red rice plants inoculated with and without strain Pal5 in presence and absence of water restriction. Physiological, biochemical, and molecular analyses of plant roots were carried out, along with measurements of growth and biochemical components. Results: The plants showed a positive response to the bacterial inoculation, with root growth promotion and induction of tolerance to drought. An increase in the root area and higher levels of osmoprotectant solutes were observed in roots. Bacterial inoculation increased the drought tolerance and positively regulated certain root development genes against the water deficit in plants. Conclusion: G. diazotrophicus Pal5 strain inoculation favored red rice plants by promoting various root growth and developmental mechanisms against drought stress, enabling root development and improving biochemical composition.

Field evaluation of seed production, shattering, and dormancy in hybrid populations of transgenic rice (Oryza sativa) and the weed, red rice (Oryza sativa)

Plant Science ◽  
2000 ◽  
Vol 157 (1) ◽  
pp. 13-22 ◽  
Author(s):  
James Oard ◽  
Marc Alan Cohn ◽  
Steve Linscombe ◽  
David Gealy ◽  
Kenneth Gravois
Keyword(s):  
Oryza Sativa ◽  
Seed Production ◽  
Transgenic Rice ◽  
Field Evaluation ◽  
Red Rice

Propanil Hydrolysis : Inhibition in Rice Plants by Diazinon and Carbaryl Translocated from the Soil

1973 ◽  
Vol 56 (5) ◽  
pp. 1178-1182
Author(s):  
Ali El-Refai ◽  
M M Mowafy
Keyword(s):  
Time Course ◽  
Growth Stages ◽  
Slow Increase ◽  
Rice Plants ◽  
Stages Of Growth ◽  
Early Stages ◽  
Tissue Extracts ◽  
Wide Range ◽  
Rate Of Hydrolysis ◽  
Time Course Study

Abstract Greenhouse and laboratory experiments were designed to determine the effect of soil-applied carbaryl and diazinon on the phytotoxicity of foliage-sprayed propanil. A time-course study of the activity of propanil-hydrolyzing enzyme in rice indicated a slow increase in the rate of hydrolysis during early stages of growth, followed by a sharp increase for extracts of the 7-week-old samples. The rate of hydrolysis reached its maximum at harvest time (approximately 17 weeks). The enzyme activity of barnyard grass was not detected at different growth stages. The enzyme was inhibited by diazinon and strongly inhibited by carbaryl absorbed and translocated from the soil over a wide range of growth stages of rice. Rice plants were more susceptible at early stages of growth and this confirms the significant correlation between growth stage and enzyme activities. Analyses of tissue extracts by paper chromatography and an enzyme inhibition method agreed closely at all intervals. It seems probable that the inhibition rate of enzyme is related to the persistence and rate of translocation of carbaryl.

Control of Red Rice (Oryza sativa) in Water-Seeded Rice (O.sativa)

Weed Science ◽  
1981 ◽  
Vol 29 (6) ◽  
pp. 663-666 ◽  
Author(s):  
Roy J. Smith
Keyword(s):  
Oryza Sativa ◽  
Field Research ◽  
Rice Grain ◽  
Red Rice ◽  
High Quality ◽  
Water Culture

Field research was conducted in 1973, 1974, 1977, and 1978 to compare water-culture practices and rates of molinate (S-ethyl hexahydro-1H-azepine-1-carbothioate) for control of “strawhull” red rice (Oryza sativaL.) in water-seeded rice (O.sativaL.). Water-culture treatments (continuously drained, alternately drained and flooded, or continuously flooded during the first 28 days after seeding) alone, or preplant, soil-incorporated treatments of molinate (3.4, 4.5, and 6.7 kg/ha) alone did not control red rice. Treatments of preplant-incorporated molinate at 4.5 and 6.7 kg/ha in a continuously flooded culture or 6.7 kg/ha in an alternately drained-flooded culture controlled 87 to 93% of the red rice and permitted production of satisfactory yields of high quality rice grain.

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