WILD MUSTARD CONTROL IN SUNFLOWER WITH AC 222,293

1988 ◽  
Vol 68 (4) ◽  
pp. 1159-1161 ◽  
Author(s):  
G. H. FRIESEN
Keyword(s):  
Helianthus Annuus ◽  
Seed Weight ◽  
Oil Content ◽  
Field Experiments ◽  
Seed Density ◽  
Sinapis Arvensis ◽  
Leaf Stage ◽  
Helianthus Annuus L ◽  
Wild Mustard ◽  
Seed Yields

AC 222,293, a 2:3 mixture of [methyl 6-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-m-toluate] and [methyl 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-p-toluate], effectively controlled wild mustard (Sinapis arvensis L.) in sunflower (Helianthus annuus L. ’Hybrid Sun M 20’) in field experiments at Morden, Manitoba. Applications of 0.10 kg ha−1 at the two- to four-leaf stage of sunflower resulted in over 90% control of wild mustard. Later applications required progressively higher dosages for similar control levels. Sunflower tolerance to AC 222,293 at the rates studied was excellent with no significant effect on seed yields, seed weight, seed density and oil content of the seed.Key words: Wild mustard, Sinapis arvenis, sunflower, Helianthus annuus, AC 222,293.

WILD MUSTARD CONTROL IN SUNFLOWER WITH FLURTAMONE

1990 ◽  
Vol 70 (4) ◽  
pp. 1195-1197 ◽  
Author(s):  
G. H. FRIESEN ◽  
D. A. WALL
Keyword(s):  
Helianthus Annuus ◽  
Field Experiments ◽  
Seedling Emergence ◽  
Sinapis Arvensis ◽  
Helianthus Annuus L ◽  
Wild Mustard ◽  
Annual Weeds ◽  
Sunflower Seedling ◽  
Brassica Kaber

Flurtamone applied preplant soil incorporated at 0.6 and 0.8 kg a.i. ha−1 selectively controlled wild mustard, Brassica kaber (DC) Wheeler var. pinnatifida (Stokes) Wheeler, in sunflower (Helianthus annuus L. ’Hybrid Sun M20’) in field experiments at Morden, Manitoba from 1987 to 1989. Mixtures of flurtamone and trifluralin or ethalfluralin did not reduce the efficacy of flurtamone and controlled a broad range of annual weeds. Flurtamone had no significant effect on sunflower seedling emergence, achene yields, achene weight, achene density, or oil content.Key words: Wild mustard, Sinapis arvensis, Brassica kaber, sunflower, Helianthus annuus, flurtamone, RE-40885

EFFECT OF PLANT DENSITY ON THE AGRONOMIC PERFORMANCE OF SUNFLOWER ON DRYLAND

1984 ◽  
Vol 64 (3) ◽  
pp. 599-605 ◽  
Author(s):  
N. W. HOLT ◽  
S. J. CAMPBELL
Keyword(s):  
Helianthus Annuus ◽  
Seed Weight ◽  
Oil Content ◽  
Seed Oil ◽  
Plant Density ◽  
Agronomic Traits ◽  
Agronomic Performance ◽  
Head Diameter ◽  
Helianthus Annuus L ◽  
Days To Maturity

This study investigated the influence of plant density on several agronomic traits of four sunflower (Helianthus annuus L.) cultivars grown at Indian Head and Saskatoon, Saskatchewan in the semiarid prairies. At populations of 40 000–85 000 plants∙ha−1, plant density had no significant effect on seed yield. The increase in percentage oil content with increase in plant density (44.3–45.6%) was small but significant. As plant density was increased, days to flower, height and test weight increased while days to maturity, head diameter and average seed weight decreased. Cultivars × density interactions were generally not significant. Environment (five location-years) had a significant effect on all variables, and environments × cultivar interactions were significant for most of these. Results of this experiment indicated that testing of sunflower lines at several locations in the growing area would be necessary for best assessment but one plant density, suitable to that area, could be used.Key words: Sunflower, plant density, seed, oil, seed size, Helianthus annuus L.

EFFECT OF ORGANIC AND INORGANIC SOURCES OF NUTRIENTS APPLIED ALONE OR IN COMBINATION ON GROWTH AND YIELD OF SUNFLOWER (Helianthus annuus L.) / EFECTO DE FUENTES ORGANICAS E INORGANICAS DE SUSTANCIAS NUTRITIVAS APLICADAS EN PARTICULAR Y EN COMBINACIONES SOBRE EL CRECIMIENTO Y EL RENDIMIENTO DE GIRASOL (Helianthus annuus L.) / EFFET DES ENGRAIS DE SOURCE S ORGANIQUE ET INORGANIQUE ADMINISTRÉS ISOLÉMENT OU EN COMBINAISON SUR LA CROISSANCE ET LE RENDEMENT DU TOURNESOL (Helianthus annuus L.)

Helia ◽  
2001 ◽  
Vol 24 (34) ◽  
pp. 115-120
Author(s):  
G. Nanjundappa ◽  
B. Shivaraj ◽  
S. Janarjuna ◽  
S. Sridhara
Keyword(s):  
Helianthus Annuus ◽  
Oil Content ◽  
Seed Oil ◽  
Field Experiments ◽  
Farmyard Manure ◽  
Growth And Yield ◽  
Recommended Dose ◽  
Seed Oil Content ◽  
Helianthus Annuus L ◽  
Yield Parameters

SUMMARY Field experiments have been conducted to study the effect of organic and inorganic sources of nutrients applied alone or in combination on the growth and yield of sunflower. Application of a recommended dose of fertilizer (62.5:75:62.5 kg NPK ha-1) coupled with 10 t ha-1 of farmyard manure has recorded highest seed and stalk yields of sunflower. Growth and yield parameters were also favorably influenced by the application of the recommended dose of fertilizer coupled with farmyard manure. Seed oil content was not influenced by the application of organic or inorganic sources of nutrients.

EFFECT OF PLANT DENSITY AND SEEDING DATE ON EARLY- AND LATE-MATURING SUNFLOWER HYBRIDS

1989 ◽  
Vol 69 (4) ◽  
pp. 1251-1254 ◽  
Author(s):  
G. H. GUBBELS ◽  
W. DEDIO
Keyword(s):  
Helianthus Annuus ◽  
Plant Height ◽  
Oil Content ◽  
Field Experiments ◽  
Plant Density ◽  
Helianthus Annuus L ◽  
Seeding Date ◽  
Plant Densities

Field experiments were conducted in 1983, 1984 and 1986 to determine the response of Sun M 20 (early) and 894 (late) sunflower (Helianthus annuus L.) hybrids to three plant densities (30 000, 45 000 and 60 000 plants ha−1) at two seeding dates (18–24 May and 13–16 June). With increase in plant density, achene yields followed the same trends in each seeding date for both hybrids. Yields were similar at the 30 000 and 45 000 plant densities, but lower at the 60 000 density. Plant height and oil content of achenes increased while achene weight decreased with increase in plant density. Plant height was greater but achene weight, oil content and achene yield were lower in the late than the early seeding.Key words: Sunflower, Helianthus annuus L., plant density, seeding date

WILD OAT INTERFERENCE IN SUNFLOWER

1985 ◽  
Vol 65 (1) ◽  
pp. 219-222 ◽  
Author(s):  
W. O. CHUBB ◽  
G. H. FRIESEN
Keyword(s):  
Helianthus Annuus ◽  
Seed Yield ◽  
Critical Period ◽  
Oil Content ◽  
Field Experiments ◽  
Avena Fatua ◽  
Wild Oat ◽  
Helianthus Annuus L ◽  
Wild Oats ◽  
Postemergence Herbicides

In field experiments, sunflower (Helianthus annuus L. ’Hybrid 894’) recovered from initial effects of wild oat (Avena fatua L.) interference and yielded normally if the weed was removed within 4 wk after crop emergence and the crop was kept relatively free of wild oats thereafter until harvest. In widely spaced plantings, wild oats growing between-the-rows competed just as vigorously as in-the-row infestations. Selective postemergence herbicides did not always provide sufficient control of wild oats to prevent significant losses in sunflower yield.Key words: Competition, interference, seed yield, oil content, herbicides, critical period

VARIABILITY IN HULL CONTENT, KERNEL OIL CONTENT, AND WHOLE SEED OIL CONTENT OF SUNFLOWER HYBRIDS AND PARENTAL LINES

1982 ◽  
Vol 62 (1) ◽  
pp. 51-54 ◽  
Author(s):  
W. DEDIO
Keyword(s):  
Helianthus Annuus ◽  
Seed Weight ◽  
Oil Content ◽  
Seed Oil ◽  
Seed Oil Content ◽  
Helianthus Annuus L ◽  
Kernel Oil ◽  
Hull Content ◽  
Parental Lines ◽  
Whole Seed

Thirty-five sunflower (Helianthus annuus L.) hybrids and seven parental lines were analyzed for hull and oil content. The hull content varied from 21.6 to 28.2% in the hybrids. The oil content varied from 59.8 to 64.6% in the kernel and from 42.5 to 50.3% in the whole seed. The variation of these characters was even greater in the parental lines. Hull content was negatively correlated with both kernel and whole seed oil content and with seed weight. Oil content of the kernel was positively correlated with oil content of the whole seed. Some variation in ease of dehulling was observed using a barley pearler.

HETEROSIS, COMBINING ABILITY, AND PREDICTED SYNTHETICS FROM A DIALLEL CROSS IN SUNFLOWERS (HELIANTHUS ANNUUS L.)

1966 ◽  
Vol 46 (1) ◽  
pp. 59-67 ◽  
Author(s):  
Eric D. Putt
Keyword(s):  
Helianthus Annuus ◽  
Combining Ability ◽  
Oil Content ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Helianthus Annuus L ◽  
The Mean ◽  
Seed Characters ◽  
Mature Weight

Heterosis occurred for the eight plant and seed characters studied. It was most frequent for yield of seed and height of plant. Mean squares for general combining ability (gca) and specific combining ability (sca) were significant (P =.01) for all characters. The estimated components for gca were greater than for sca for days to mature, weight per bushel, and percent oil in the seed; less for height and yield of seed; and essentially the same for days to bloom, diameter of head, and weight per 1000 seeds.The yield of seed and percent oil in the seed, for the highest ranking 100 synthetics that could be composed from the 10 lines, was predicted in F6 assuming 50 and 60% outcrossing between F2 and F6. Virtually all values exceeded the mean performance of four check samples of commercial hybrids. Many exceeded the highest rank check for oil content in the seed. Fourteen of the highest ranking 100 synthetics for yield and 30 for oil content consisted of two or three lines. It was concluded that synthetics can be superior to the present hybrids in heterosis and that desirable synthetics can be made from only a few lines.

Dwarf sunflower response to row spacing, stand reduction, and defoliation at different growth stages

2003 ◽  
Vol 83 (2) ◽  
pp. 319-326 ◽  
Author(s):  
B. L. Johnson
Keyword(s):  
Helianthus Annuus ◽  
Oil Content ◽  
Growth Stage ◽  
Total Yield ◽  
Reciprocal Relationship ◽  
Yield Response ◽  
Yield Reduction ◽  
Row Spacing ◽  
Growth Stages ◽  
Helianthus Annuus L

Growth compensation of dwarf sunflower (Helianthus annuus L.) hybrids to low initial stands, later stand losses, or plant defoliation has not been reported regarding replanting decisions and crop insurance yield loss assessment. Three experiments were conducted to study the affect of stand reduction, defoliation, and row spacing on dwarf sunflower yield and quality when grown in eastern North Dakota. Experiment 1 evaluated stand reduction (0, 25, 50 and 75%) applied at growth stages (V4, R1 and R6) in 15, 45 and 76 cm spaced rows. Row spacing interactions with stand reduction and growth stage were not significant for yield indicating growth stage and stand reduction effects on yield response were independent of row spacing. In exp. 2, significant growth stage (V4, V8, R1, R2, R3, R5 and R6) by stand reduction (0, 12, 25, 37, 50, 62 and 75%) interaction showed stand reduction at vegetative growth stages not influencing yield, but as maturity progressed yield reductions became greater with increased stand reduction. Achene weight increased with increasing stand reduction at vegetative and early reproductive stages. A reciprocal relationship was noted between achene weight and achene oil content where oil content decreased as achene weight increased. Interaction of growth stage (R1 and R6) and defoliation (0, 25, 50, 75 and 100%) in exp. 3 indicated greater reduction in yield, test weight, 1000-achene weight, and achene oil conte nt as defoliatin increased at growth stage R6. Yield compensating ability of dwarf sunflower is dependent on type and level of damage and growth stage of occurrence, with total yield reduction considering all effects. Key words: Sunflower, Helianthus annuus L., row spacing, stand reduction, defoliation

scholarly journals GENETIC DIVERSITY IN NON-OILSEED SUNFLOWER (Helianthus annuus L.) GENOTYPES / DIVERSIDAD GENETICA DE GENOTIPOS NO OLEAGINOSOS DEL GIRASOL (Helianthus annuus L.) / DIVERSITÉ GÉNÉTIQUE DANS LES GÉNOTYPES DE TOURNESOL NON-OLÉAGINEUX (Helianthus annuus L.)

Helia ◽  
2001 ◽  
Vol 24 (34) ◽  
pp. 17-24
Author(s):  
K. Manjula ◽  
H.L. Nadaf ◽  
K. Giriraj
Keyword(s):  
Genetic Diversity ◽  
Protein Content ◽  
Helianthus Annuus ◽  
Plant Height ◽  
Genetic Divergence ◽  
Oil Content ◽  
Diversité Génétique ◽  
Helianthus Annuus L ◽  
Volume Weight ◽  
Seed Characteristics

SUMMARYGenetic diversity was assessed in 46 non-oilseed sunflower genotypes for 14 characters by adopting D2 analysis. Oil content and plant height exhibited maximum contributions towards genetic divergence. The genotypes were grouped into 11 clusters. The inter-cluster D2 values ranged from 288.17 to 3972.34. The contribution of oil content towards genetic divergence in the 46 genotypes was confirmed when D2 analysis was performed for seed characteristics such as test weight, volume weight, hull content, kernel recovery, oil and protein content.

Gene Action in the Expression of Achene Yield and Oil Content in Sunflower (Helianthus annuus L.)

2005 ◽  
Vol 8 (11) ◽  
pp. 1517-1520
Author(s):  
Masood Jan . ◽  
Farhatullah . ◽  
Muhammad Tariq Jan . ◽  
Ghulam Hassan . ◽  
Raziudin .
Keyword(s):  
Helianthus Annuus ◽  
Oil Content ◽  
Gene Action ◽  
Helianthus Annuus L
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