Effect of varying seeding rates on hybrid and conventional summer rape performance in Manitoba

1992 ◽  
Vol 72 (3) ◽  
pp. 635-641 ◽  
Author(s):  
A. E. Van Deynze ◽  
P. B. E. McVetty ◽  
R. Scarth ◽  
S. R. Rimmer
Keyword(s):  
Protein Content ◽  
Chlorophyll Content ◽  
Seed Yield ◽  
Harvest Index ◽  
Dry Matter ◽  
Oil Content ◽  
Seed Quality ◽  
Seeding Rate ◽  
Seed Formation ◽  
Matter Production

To compare the effects of varying seeding rate on the agronomic performance, phenology and seed quality of hybrid and conventional summer rape cultivars, four hybrid and two conventional summer rape cultivars were seeded at 1.5, 3.0, 4.5, 6.0 and 9.0 kg ha−1 at two locations for 3 yr. The hybrid cultivars were, very importantly, 24% higher yielding and produced 50% more total dry matter than the conventional cultivars. The hybrid cultivars were, on average, 1.3% lower in seed oil content, 1.0% higher in seed protein content and equal in sum of oil and protein in the seed compared with the conventional cultivars. The hybrid cultivars were on average, 1.3 d later to 50% flowering and 1.1 d later to maturity than the average for the conventional cultivars, (i.e., equal or earlier to flowering and maturity than Regent). The hybrid cultivars were also 3.9% lower in harvest index and 1.3 ppm lower in chlorophyll content than the conventional cultivars. In spite of these differences, there were no significant cultivar-by-seeding-rate interactions, indicating that the hybrid and conventional cultivars responded similarly to varying seeding rate. Lodging, days to 50% flowering, days to maturity, harvest index, survival, oil content and protein content displayed significant linear responses to varying seeding rate. Stand at maturity, seed yield and total dry matter production displayed significant linear and quadratic responses to varying seeding rate. Varying seeding rate had no effect on seed formation period, the sum of oil and protein content, or chlorophyll content. A seeding rate of 6 kg ha−1 maximized seed yield for both hybrid and conventional summer rape cultivars.Key words: Brassica napus, canola, seed quality, agronomy, phenology

scholarly journals Effect of sulphur on the seed yield and oil content of sesame (Sesamum indicum L.)

2019 ◽  
Vol 17 (1) ◽  
pp. 33-38
Author(s):  
Swapan Kumar Paul ◽  
Mosa Morsheda Khatun ◽  
Md Abdur Rahman Sarkar
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Dry Matter ◽  
Oil Content ◽  
Dry Matter Production ◽  
Production Plant ◽  
Matter Production ◽  
Stover Yield ◽  
Number Of Seeds ◽  
Number Of Branches

Sulphur is a component of plant amino acids, proteins, vitamins, and enzyme structures which influence the productivity of oil seed and total oil content. The experiment was conducted to find out the effect of sulphur on the seed yield and oil content of sesame in Bangladesh. The experiment comprised three varieties of sesame viz. Binatil-2, Binatil-3 and BARI Til-4 and six levels of sulphur (S) viz. 0, 10, 20, 30, 40 and 50 kg S ha–1. The experiment was laid out in a randomized complete block design with three replications. Dry matter production, crop characters, yield components, seed yield and oil content were significantly influenced by variety, level of sulphur and their interaction. The highest dry matter production plant–1 at 50 DAS (17.56 g), plant height (101.3 cm), number of branches plant–1 (3.66),  number of pods plant-1 (41.56), number of seeds pod-1 (58.83),  seed yield    (747.2 kg ha-1), stover yield (2243.0 kg ha–1) and oil content (40.03%) were obtained in BARI Til-4 while the corresponding lowest values of all parameters were recorded in Binatil-2. In case of sulphur application, the highest dry matter production plant–1 at 50 DAS (20.81 g), plant height (109.7 cm), number of branches plant–1 (3.87),  number of pods plant–1 (46.13),  number of seeds pod-1 (56.67),  seed yield (800.0 kg ha–1), stover yield (2787 kg ha–1 ) and oil content (43.97%) were obtained when crop was fertilized with 30 kg S ha–1 while the lowest seed yield (502.2 kg ha–1), stover yield (1550.0 kg ha–1) and oil content (32.80%) were obtained in control (0 kg S ha–1). BARI Til-4 fertilized with 30 kg S ha–1 produced the highest dry matter plant–1 at 50 DAS (24.80 g), number of pods plant–1 (51.13), seeds pod–1 (62.0) and seed yield (1011.0 kg ha–1). The highest oil content (43.97%) was also recorded in BARI Til-4 fertilized with 30 kg S ha–1, which was as good as that of BARI Til-4 fertilized with 40 kg S ha–1. Therefore, BARI Til-4 fertilized with 30 kg S ha–1 can be considered as a promising practice in respect of seed yield and oil content of sesame in Bangladesh. J. Bangladesh Agril. Univ. 17(1): 33–38, March 2019

Response of vetch (Vicia spp.) to plant density in south-western Australia

2002 ◽  
Vol 42 (8) ◽  
pp. 1043 ◽  
Author(s):  
M. Seymour ◽  
K. H. M. Siddique ◽  
N. Brandon ◽  
L. Martin ◽  
E. Jackson
Keyword(s):  
Seed Yield ◽  
Western Australia ◽  
Dry Matter ◽  
Field Experiments ◽  
Plant Density ◽  
Yield Potential ◽  
Dry Matter Production ◽  
Vicia Sativa ◽  
Seeding Rate ◽  
Matter Production

The response of Vicia sativa (cvv. Languedoc, Blanchefleur and Morava) and V. benghalensis (cv. Barloo) seed yield to seeding rate was examined in 9 field experiments across 2 years in south-western Australia. There were 2 types of field experiments: seeding rate (20, 40, 60, 100 and 140 kg/ha) × cultivar (Languedoc, Blanchefleur, and Morava or Barloo), and time of sowing (2 times of sowing of either Languedoc or Blanchefleur) × seeding rate (5,�7.5, 10, 15, 20, 30, 40, 50, 75 and 100 kg/ha).A target density of 40 plants/m2 gave 'optimum' seed yield of vetch in south-western Australia. In high yielding situations, with a yield potential above 1.5 t/ha, the 'optimum' plant density for the early flowering cultivar Languedoc (85–97 days to 50% flowering) was increased to 60 plants/m2. The later flowering cultivar Blanchefleur (95–106 days to 50% flowering) had an optimum plant density of 33 plants/m2 at all sites, regardless of fitted maximum seed yield. Plant density in the range 31–38 plants/m2 was found to be adequate for dry matter production at maturity of Languedoc and Blanchefleur. For the remaining cultivars Barloo and Morava we were unable to determine an average optimum density for either dry matter or seed yield due to insufficient and/or inconsistent data.

Comparison of the responses of two Indian mustard (Brassica juncea L.) genotypes to post-flowering soil water deficit with the response of canola (B. napus L.) cv. Monty

2009 ◽  
Vol 60 (3) ◽  
pp. 251 ◽  
Author(s):  
C. P. Gunasekera ◽  
R. J. French ◽  
L. D. Martin ◽  
K. H. M. Siddique
Keyword(s):  
Water Stress ◽  
Water Use ◽  
Seed Yield ◽  
Harvest Index ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Mild Stress ◽  
Matter Production ◽  
Oil Concentration ◽  
Total Oil

The responses to water stress during the post-flowering period of two mustard breeding lines (887.1.6.1 and Muscon) and a commercial canola cv. Monty were tested in the field at Merredin in the low-rainfall Mediterranean-type environment of Western Australia. Three water-stress treatments were imposed using supplemental irrigation and a rain-exclusion shelter. Increasing water stress in the post-flowering period significantly reduced dry matter production and seed yields. Harvest index was slightly increased by mild stress, but reduced back to control levels by severe stress. Pods/plant, seeds/pod, and 1000-seed weight were all reduced by water stress. Dry matter production was higher in mustard than in canola, due to its greater water use and radiation interception. Water-use efficiency (WUE) for dry matter production and radiation-use efficiency (RUE) were higher in mustard than in canola. WUE for dry matter production and RUE were insensitive to the levels of water stress in mustard in this experiment, but declined significantly in canola. The greater water use in mustard and insensitivity of WUE for dry matter production and RUE to water stress were attributed to significantly higher levels of osmotic adjustment in mustard, although osmotic adjustment was also observed in canola. Despite this, canola seed yield was not significantly lower than the seed yield of the better mustard genotype, although stress caused a significantly greater percentage yield reduction in canola. This is because canola had a higher harvest index, which also meant it had higher WUE than mustard for grain production under mild stress. Mustard’s poorer harvest index was due to more of the dry matter being invested in stem and, in the case of cv. Muscon, to a short reproductive duration and a low proportion of pod weight allocated to seed. Canola had significantly higher seed oil concentration than mustard, which meant that it produced higher total oil yield despite sometimes producing lower seed yield. However, its oil concentration was reduced more by stress than mustard’s, so under the most severe stress conditions, both mustard genotypes produced higher total oil yield. Mustard has potential as an oil-producing crop in the low-rainfall Mediterranean-type environments of Western Australia, but improved genotypes, greater harvest index, and greater seed yield are required.

scholarly journals Seed Yield, Seed Protein, Oil Content, and Agronomic Characteristics of Soybean (Glycine max L. Merrill) Depending on Different Seeding Systems and Cultivars in Germany

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1020
Author(s):  
Olena Sobko ◽  
Sabine Zikeli ◽  
Wilhelm Claupein ◽  
Sabine Gruber
Keyword(s):  
Glycine Max ◽  
Protein Content ◽  
Seed Yield ◽  
Dry Matter ◽  
Oil Content ◽  
Seed Protein ◽  
Row Spacing ◽  
System A ◽  
Glycine Max L ◽  
Plant Characteristics

Soybean (Glycine max L. Merrill) is one of the most important crops worldwide. In several European countries such as Germany, soybean cultivation is not traditional and as such remains to be optimized. One option to increase soybean production is to adapt and improve the seeding system. To investigate the effects of different seeding systems on seed yield, seed protein, and oil content, plant characteristics were assessed using a two-factorial (two seeding systems and four cultivars) field trial over two years (2017–2018) at two locations in southeast Germany. The seeding systems were drill (row spacing 14 cm) and precision seeding (row spacing 28 cm), and the cultivars were Viola 000, Lissabon 000, ES Mentor 00, and Orion 00. Depending on the seeding system, a seed yield of 3.8 t ha−1 dry matter (DM), 40.9% protein content (DM), and 18.8% oil content (DM) was achieved by drilling, and 3.6 t ha−1 yield (DM), 40.1% protein content (DM), and 19.1% oil content (DM) with precision seeding (average across four cultivars, two locations, and two years). No significant effects of the seeding system on all seed and plant characteristics were observed. As drilling and precision seeding did not affect the seed yield, seed protein, oil contents, and plant characteristics of soybean in this study, farmers are able to choose the seeding system which fits best into their farms and is economically most viable.

The effect of cultivar, seeding rate and applied nitrogen on Brassica carinata seed yield and quality in contrasting environments

2012 ◽  
Vol 92 (5) ◽  
pp. 961-971 ◽  
Author(s):  
X. Pan ◽  
C. D. Caldwell ◽  
K. C. Falk ◽  
R. Lada
Keyword(s):  
Protein Content ◽  
Seed Yield ◽  
Seed Quality ◽  
Brassica Carinata ◽  
Specific Recommendation ◽  
Seeding Rate ◽  
Yield And Quality ◽  
N Supply ◽  
Significant Difference ◽  
Applied Nitrogen

Pan, X., Caldwell, C. D., Falk, K. C. and Lada, R. 2012. The effect of cultivar, seeding rate and applied nitrogen on Brassica carinata seed yield and quality in contrasting environments. Can. J. Plant Sci. 92: 961–971. The unremitting growth of oilseed demand makes it necessary to explore alternative oilseed crops to meet this requirement. This study evaluated the effects of genotype, seeding rate and nitrogen (N) supply on the seed yield and quality of oilseed Brassica carinata A. Braun in three contrasting environments (Truro, NS, Harrington, PE and Saskatoon, SK). Useful genetic variation in agronomic and seed quality characteristics was found among these 10 B. carinata genotypes and genotype selection requires location specific recommendation. Line 050488EM had consistently good yield in both Nova Scotia and Prince Edward Island, while line 070768EM displayed better yield stability across 2 yr in Saskatchewan. Because of the high degree of compensatory ability to low plant population, maximum seed yield of B. carinata can be achieved over the range from 34 to 114 plants m−2. No significant difference in oil and protein content of seed due to seeding rates was observed. The linear increase in seed and oil yield with increased N rate up to 150 kg ha−1 indicates that B. carinata is highly responsive to applied N. Increases in N supply resulted in a decrease in oil content and a corresponding increase in protein content in all experiments. In summary, the findings of this study provide convincing evidence of the agronomic adaptation of B. carinata to all three locations.

Effectiveness of sulphate-S fertilization at different growth stages for yield, seed quality and S uptake of canola

2002 ◽  
Vol 82 (4) ◽  
pp. 665-674 ◽  
Author(s):  
S. S. Malhi ◽  
K. S. Gill
Keyword(s):  
Protein Content ◽  
Seed Yield ◽  
Oil Content ◽  
Seed Quality ◽  
Growing Season ◽  
Early Flowering ◽  
S Deficiency ◽  
S Uptake ◽  
S Application ◽  
Bolting And Flowering

Canola ( Brassica napus L. and B. rapa L.) is an important cash crop in the Prairie Provinces of Canada. The majority of canola is grown in the Parkland zone where many soils are deficient or potentially deficient in plant-available S for optimum seed yield of canola. Because canola has high S requirements and S is immobile in plants, its deficiency can occur any time during the growing season and drastically reduce canola seed yield, particularly on soils fertilized well with N and P. The objective of this study was to assess the effectiveness of sulphate-S fertilizer (potassium sulphate) applied using various application methods at seeding and during the growing season for yield, seed quality and S uptake of canola on S-deficient soils. Six field experiments (two sites per year from 1998 to 2000) were conducted on Grey Luvisol soils in north-eastern Saskatchewan. Fertilizer treatments were no fertilizer, N (120 kg N ha-1) alone at seeding, S (30 kg S ha-1) alone at seeding, and N (120 kg N ha-1) at seeding + S (15 and 30 kg S ha-1) at seeding, bolting and flowering stages of canola. Methods of S application were surface broadcast and incorporated into the soil, sidebanded and seedrow placed at seeding, and topdressed and foliar sprayed at bolting and early flowering. Canola at all experimental sites showed severe S deficiency symptoms. Compared to N alone, N + S fertilization increased yield, oil content and S uptake of seed in all cases, increased yield and S uptake of seed + straw in most cases, while protein content of seed and S index (ratio of S uptake in seed to S uptake in seed + straw) were not influenced consistently. A trend of seeding > bolting > flowering time of S applications was generally shown by yield and S uptake of seed and seed + straw, and by S index. There were no noticeable differences among treatments applied at seeding. Topdressing at bolting and flowering tended to produce less seed yield than foliar-applied S in few cases and method of S application had no consistent effect on other parameters. Increasing the rate from 15 to 30 kg S ha-1 generally increased yield and S uptake of seed and seed + straw, but had no consistent effect on oil and protein contents in seed and S index. Fertilizer S alone tended to increase yield, oil content and S uptake of seed but had no effect on seed protein content. However, application of N alone tended to reduce yield, oil content and S uptake of seed while it had an inconsistent effect on yield and S uptake of seed + straw and S index. In conclusion, application of sulphate-S fertilizer on S-deficient soils improved yield, seed quality and S uptake of canola, with applications at seeding generally more effective than at bolting and early flowering stages. The results suggest that application of sulphate-S can correct S deficiency in canola if it occurs in the growing season, and restore seed yield substantially at bolting and moderately at early flowering. Key words: Application times, canola, placement methods, seed quality, S index, S rates

Dry Matter Production and Rate of Change of Harvest Index at High Temperature in Peanut

Crop Science ◽  
2002 ◽  
Vol 42 (1) ◽  
pp. 146 ◽  
Author(s):  
P. Q. Craufurd ◽  
P. V. Vara Prasad ◽  
R. J. Summerfield
Keyword(s):  
High Temperature ◽  
Harvest Index ◽  
Dry Matter ◽  
Rate Of Change ◽  
Dry Matter Production ◽  
Matter Production

scholarly journals Growth, yield and nutrient content of mungbean (Vigna radiata L.) in response to INM in eastern Uttar Pradesh, India

2018 ◽  
Vol 44 (3) ◽  
pp. 479-482 ◽  
Author(s):  
Yubaraj Dhakal ◽  
RS Meena ◽  
Nirmal De ◽  
SK Verma ◽  
Ajeet Singh
Keyword(s):  
Seed Yield ◽  
Harvest Index ◽  
Dry Matter ◽  
Uttar Pradesh ◽  
Growth Yield ◽  
Nutrient Content ◽  
Dry Matter Accumulation ◽  
Spad Value ◽  
Leaf Chlorophyll ◽  
Eastern Uttar Pradesh

Significant improvement in LAI, number of trifoliate, SPAD value of green leaf chlorophyll, dry matter accumulation, yield, harvest index (%) and nutrient content of mungbean were recorded due to application of 75% RDF + 2.5 t/ha vermicompost (VC) + Rhizobium (Rh)+ phosphorus solublizing bacteria (PSB), followed by 100% RDF + 2.5 t/ha VC and 100% RDF + Rh + PSB. The highest seed yield of mungbean was obtained with the application of 75% RDF + 2.5 t/ha VC + Rh + PSB (12.34 q /ha) followed by 100% RDF + 2.5 t/ha VC (12.05 q /ha) and 100% RDF + Rh+ PSB (11.95 q /ha).

Sign in / Sign up

Export Citation Format

Share Document