RESPONSE OF SUNFLOWER HYBRIDS TO ROW SPACING

1988 ◽  
Vol 68 (4) ◽  
pp. 1125-1127 ◽  
Author(s):  
G. H. GUBBELS ◽  
W. DEDIO
Keyword(s):  
Helianthus Annuus ◽  
Plant Height ◽  
Row Spacing ◽  
Helianthus Annuus L

An early- and a late-maturing oilseed sunflower (Helianthus annuus L.) hybrid were grown at 45- and 90-cm row spacings in the 1984 to 1986 seasons at Morden, Manitoba. In the 45-cm rows compared to the 90-cm rows, plant height was reduced approximately 9 cm, and achene yield was increased 14.5% for the early hybrid. Response of the late hybrid to row spacing was minimal.Key words: Oilseed sunflower, Helianthus annuus L., row spacing

EFFECTS OF PLANT POPULATION AND ROW SPACING ON SUNFLOWER AGRONOMY

1975 ◽  
Vol 55 (2) ◽  
pp. 491-499 ◽  
Author(s):  
K. VIJAYALAKSHMI ◽  
N. K. SANGHI ◽  
W. L. PELTON ◽  
C. H. ANDERSON
Keyword(s):  
Helianthus Annuus ◽  
Plant Height ◽  
Moisture Stress ◽  
Plant Population ◽  
Growth Characteristics ◽  
Stem Diameter ◽  
Row Spacing ◽  
Plant Populations ◽  
Helianthus Annuus L ◽  
Wide Range

Studies at Hyderabad, India, and Swift Current, Saskatchewan, Canada, have shown that sunflower (Helianthus annuus L.) can be grown under dryland conditions over a wide range of plant populations and row spacings. At Hyderabad, yield plateaus of approximately 900 and 1,350 kg/ha existed over population ranges of 18,000 to 32,000 and 56,000 to 98,000 plants/ha, respectively. At Swift Current, yields from a 25,000 plants/ha population were 28% higher than those of a 125,000. plants/ha population, but were not significantly different from the mid-range 75,000 plants/ha. Population also influenced growth characteristics such as plant height and stem diameter and the rates of development. The crop showed a remarkable tolerance to drought and the ability to recover after periods of extreme moisture stress. Populations of 60,000 to 75,000 plants/ha at row spacings of 35 to 60 cm are recommended for dryland production.

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.

scholarly journals Heritability of plant height and head diameter in sunflower (Helianthus annuus L.)

2013 ◽  
Vol 50 (2) ◽  
pp. 62-66
Author(s):  
Jockovic Milan ◽  
Jocic Sinisa ◽  
Marinkovic Radovan ◽  
Prodanovic Slaven ◽  
Canak Petar ◽  
...  
Keyword(s):  
Helianthus Annuus ◽  
Plant Height ◽  
Head Diameter ◽  
Helianthus Annuus L

RESPONSE OF EARLY-MATURING SUNFLOWER HYBRIDS TO ROW SPACING AND PLANT DENSITY

1990 ◽  
Vol 70 (4) ◽  
pp. 1169-1171 ◽  
Author(s):  
G. H. GUBBELS ◽  
W. DEDIO
Keyword(s):  
Key Words ◽  
Helianthus Annuus ◽  
Plant Height ◽  
Oil Content ◽  
Plant Density ◽  
Growth Habit ◽  
Row Spacing ◽  
Normal Height ◽  
Early Maturing ◽  
Plant Densities

Two early-maturing sunflower hybrids, Sunwheat 101 and MRS 34, with shorter than normal height and a narrower growth habit were grown at 30- and 60-cm row spacings and three plant densities at each row spacing in the 1986 and 1987 seasons at Morden, Manitoba. There were no differences in achene yield or oil content between row spacings. Plant height and oil content of achenes increased with increase in plant density, while achene weight decreased. Achene yield of both hybrids increased as plant density increased from 55 000 to the 74 000 plants ha−1 density, then remained relatively constant to 148 000 plants ha−1.Key words: Oilseed sunflower, Helianthus annuus L., plant row spacing, plant density

YIELD AND SEED QUALITY OF SUNFLOWER HYBRIDS IN RESPONSE TO A PAIRED-ROW SEEDING PATTERN

1989 ◽  
Vol 69 (4) ◽  
pp. 1255-1257
Author(s):  
G. H. GUBBELS ◽  
W. DEDIO
Keyword(s):  
Soil Moisture ◽  
Helianthus Annuus ◽  
Seed Quality ◽  
Growth Habit ◽  
Row Spacing ◽  
Helianthus Annuus L ◽  
Moisture Conditions

Four oilseed sunflower (Helianthus annuus L.) hybrids, varying widely in growth habit, were grown with rows uniformly spaced at 45 cm and in a paired-row arrangement, alternating 30 cm with 60 cm, in 1986 and 1987 at Morden, Manitoba. Soil moisture conditions were adequate in both seasons. There were no significant differences in achene yield between the row spacing treatments.Key words: Sunflower, Helianthus annuus L., row spacing, paired rows

scholarly journals ASPECTOS MORFOFISIOLÓGICOS DO GIRASSOL IRRIGADO POR GOTEJAMENTO NO SUBMÉDIO SÃO FRANCISCO

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 66 ◽  
Author(s):  
Welson Lima Simões ◽  
Daniela Siqueira Coelho ◽  
Moisés Alves Souza ◽  
Marcos Antônio Drumond ◽  
Joston Simão Assis ◽  
...  
Keyword(s):  
Experimental Design ◽  
Gas Exchange ◽  
Helianthus Annuus ◽  
Plant Height ◽  
Oil Content ◽  
Irrigation System ◽  
Helianthus Annuus L ◽  
Weight Yield ◽  
Number Of Leaves ◽  
Irrigation Levels

ASPECTOS MORFOFISIOLÓGICOS DO GIRASSOL IRRIGADO POR GOTEJAMENTO NO SUBMÉDIO SÃO FRANCISCO WELSON LIMA SIMÕES1; DANIELA SIQUEIRA COELHO2; MOISÉS ALVES SOUZA3; MARCOS ANTÔNIO DRUMOND4; JOSTON SIMÃO ASSIS5 E JAIR ANDRADE LIMA6 1Eng. Agrônomo, Doutor, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]. Agrícola e Ambiental, Doutoranda, Universidade Federal Rural de Pernambuco, Recife-PE, CEP 52171-900, email:[email protected]ólogo, Mestre, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]. Florestal, Doutor, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]. Agrônomo, Doutor, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]ólogo, Universidade de Pernambuco, Petrolina-PE, CEP 56328-903, email: [email protected]  1 RESUMO O objetivo desse trabalho foi avaliar a influência de diferentes lâminas de irrigação e arranjos de gotejadores nas características morfofisiológicas de variedades de girassol. O delineamento experimental foi em blocos casualizados dispostos em esquema fatorial 2x2x4, considerando duas variedades de girassol (Hélio 251 e Hélio 360), dois arranjos das linhas de gotejo (fileiras simples e fileiras duplas) e quatro lâminas de irrigação (75, 90, 105 e 120% da ETc), com três repetições. Foram avaliados altura, diâmetro do caule, número de folhas, peso do capítulo, peso de mil aquênios, produtividade e respostas fisiológicas das plantas. A partir dos resultados obtidos, foi observado que, no geral, a lâmina correspondente a 100% da ETc proporcionou as melhores respostas para o cultivo das variedades de girassol Hélio 251 e Hélio 360. Considerando a não diferença significativa entre os arranjos das linhas de gotejadores, o de fileiras duplas torna-se o mais viável para o cultivo de girassol, tendo em vista sua maior economia na instalação do sistema de irrigação. O teor de óleo dos aquênios não é influenciado pela disponibilidade de água para as plantas de girassol.  Palavras-chave: Helianthus annuus L., produtividade, trocas gasosas, teor de óleo  SIMÕES, W. L; COELHO, D. S.; SOUZA, M. A.; DRUMOND, M. A.; ASSIS, J. S; LIMA, J. A.MORPHOPHYSIOLOGICAL ASPECTS OF SUNFLOWER IRRIGATION DRIP IN SUBMIDDLE OF THE SÃO FRANCISCO  2 ABSTRACT  The aim of this study was to evaluate the influence of different irrigation drip in single and double rows on morphological and physiological characteristics of sunflower varieties. The experimental design was randomized blocks in a factorial 2x2x4 considering two varieties (Hélio 251 e Hélio 360), two provisions of drip lines (single and double rows), four irrigation levels (75, 90, 105 and 120% of ETc) and three replications. At the end of the experiment, plant height, stem diameter, number of leaves, weight of the chapter, a thousand achenes weight, yield, and gas exchange. From the results obtained, it was observed that, in general, the blade corresponding to 100% of ETc provided better answers in the cultivation of sunflower varieties Hélio 251 e Hélio360. A irrigated by drip lines available in double rows is more feasible for sunflower cultivation in view of its greater savings in installation of the irrigation system and its effect is similar to that of single rows. The variety has 360 Helium oil content higher than 251 helium. keywords: Helianthus annuus L., productivity, gas exchange, oil content.

scholarly journals THE EFFECT OF ARBUSCULAR MICHORRIZA FUNGI AND ORGANIC FERTILIZER ON THE GROWTH OF SUNFLOWER (HELIANTHUS ANNUUS L.) ON CRITICAL LAND OF FORMER IRON ORE MINE IN LHOONG - ACEH BESAR

2018 ◽  
Vol 18 (2) ◽  
pp. 77-84
Author(s):  
Suwarniati Suwarniati ◽  
Ulia Hanum ◽  
Muslim Muslim
Keyword(s):  
Helianthus Annuus ◽  
Plant Height ◽  
Iron Ore ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Leaf Number ◽  
Fresh Weight ◽  
Iron Ore Mine ◽  
Helianthus Annuus L ◽  
Arbuscular Mycorrhiza Fungi

The study determines the effect of arbuscular mycorrhiza fungi (AMF) and organic fertilizer on sunflower growth (Helianthus annuus L.) in former iron ore mine in Lhoong, Aceh Besar. The Randomized block design is 2×3 factorial with 4 replications was used. The first factor: Without Mycorrhiza and Mixed Mycorrhiza. The second factors were Without Fertilizer, Manure, and Guano. The results showed that at α = 5% variation analysis, AMF had very significant effect on plant height in 10 d After Planting (DAP), leaf number 50 DAP, fresh  weight of top-trimmed, and AMF colonized roots. Furthermore, it showed a significant effect on plant height 40 and 50 DAP, leaf number 20, 40 DAP and dry weight of top-trimmed. Fertilizer were significantly affected on plant height in 10 and 20 DAP, leaf number 50 DAP and fresh/dry weight of the top-trimmed. It showed a significant effect on plant height 30 DAP and leaf number 40 DAP. Mixed Mycorrhiza and Guano showed the best results. The interaction between AMF and fertilizer had a significant effect on plant height at 50 DAP and fresh  weight of the top-trimmed. Mixed Mycorrhiza and Manure showed the best results on 50 DAP with increasing in plant height, while Mixed mycorrhiza and Guano increased fresh weight of the top-trimmed.Keywords: arbuscular mycorrhiza fungi (AMF), Helianthus annuus L., critical land, organic fertilizer, sunflower growth.

EFFECT OF PLANT DENSITY AND ROW SPACING ON AGRONOMIC PERFORMANCE AND ECONOMIC RETURNS OF NONOILSEED SUNFLOWER IN SOUTHEASTERN SASKATCHEWAN

1985 ◽  
Vol 65 (3) ◽  
pp. 501-509 ◽  
Author(s):  
N. W. HOLT ◽  
R. P. ZENTNER
Keyword(s):  
Helianthus Annuus ◽  
Seed Size ◽  
Seed Yield ◽  
Plant Density ◽  
Row Spacing ◽  
Agronomic Performance ◽  
Economic Returns ◽  
Helianthus Annuus L ◽  
Large Seed ◽  
Plant Densities

Years, locations and planting density are significant factors that influence the agronomic performance of Sundak nonoilseed sunflower (Helianthus annuus L.) in southeastern Saskatchewan. As plant densities of sunflower were increased from 37 500 to 75 000 plants/ha at Indian Head from 1975 to 1977, achene (seed) yield and test weight increased linearly with density while percentages of roasting and dehulling seed categories decreased. Row spacings of 30–90 cm affected plant height and seed yield and size, but absolute amounts were not large. Based on 1984 prices of four seed-size categories, highest gross economic returns were favored by the higher plant densities. In a second test at Indian Head and Oxbow in 1979 and Areola in 1980, a range of plant densities from 22 900 to 76 400 plants/ha did not significantly affect seed yield or gross economic returns. However, yield and returns tended to be greatest for 50 000-60 000 plants/ha. Percentages of large seed decreased as plant population increased. Because markets generally favor the large-seed size categories and the price differentials among seed size categories tend to increase, plant densities of 40 000 to 50 000 plants/ha might better be recommended to allow for years with greater price differentials.Key words: Nonoilseed sunflower, Helianthus annuus L., plant density, row spacing, seed size, economic returns

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