Dependence of seed maize yield on inter-row spacing and sowing density

2003 ◽  
Vol 51 (3) ◽  
pp. 333-338
Author(s):  
P. Jovin ◽  
L. Đukanović ◽  
Z. Jovanović ◽  
M. Vesković ◽  
J. Tošić
Keyword(s):  
Seed Weight ◽  
Unit Area ◽  
Maize Yield ◽  
Cold Test ◽  
Standard Test ◽  
Test Method ◽  
Row Spacing ◽  
Maize Hybrid ◽  
Female Component ◽  
Number Of Seeds

The seed maize hybrid ZP 677 was tested under irrigated conditions on the DPP Maglic estate in Backi Maglic during 2000 and 2001. Sowing the female component of the hybrid ZP 677 at an inter-row spacing of 70 cm resulted in both higher yield (4.55 t ha-1) and higher number of seeds per unit area (15,407,000) in comparison to sowing at an inter-row spacing of 35 cm, where the corresponding values were 4.39 t ha-1 and 14,667,000, respectively. At sowing densities of 71,425, 85,538 and 99,899 plants ha-1, yields of 4.46, 4.38 and 4.59 th ha-1 were recorded, while the number of seeds per unit area amounted to 14,670,000, 14,769,000 and 15,686,000, respectively. The 1000-seed weight decreased on average for all seed fractions at both inter-row spacings as the sowing density increased. Neither inter-row spacing nor sowing density affected the seed germination obtained with the standard test method, but germination in the cold test exhibited an insignificant increase with an increase in sowing density.

scholarly journals IMPROVING SEED AND OIL YIELD OF SUNFLOWER (Helianthus annuus L.) BY USING DIFFERENT INTER AND INTRA ROW SPACE COMBINATIONS

2020 ◽  
pp. 147-153
Author(s):  
Ismail Demir
Keyword(s):  
Seed Weight ◽  
Plant Material ◽  
Unit Area ◽  
Oil Yield ◽  
Row Spacing ◽  
Plant Yield ◽  
Yield Parameters ◽  
Row Space ◽  
Thousand Seed Weight ◽  
Number Of Seeds

The aim of this study was to determine the appropriate inter and intra row spacing of sunflower irrigated during the critical growing stages to obtain the highest seed and oil yields. The experiment was carried out with three replications in the randomized blocks with split plots design in 2016 and 2017. Inter row spacings (45 and 70 cm) were placed on the main plots and intra row spacings (20, 25, 30, 35 and 40 cm) were placed on the subplots. Bosfora, oilseed hybrid sunflower variety was used as plant material. It has been determined that inter and intra row spaces had statistically significant effects on sunflower development and yield parameters. In general, as the distance between the inter and intra rows narrowed, plant height was increased, while the stem and table diameters, the number of seeds in the table, thousand seed weight, oil rate and per plant yield were decreased. And also seed and oil yield was increased, in contrast to per plant yield, due to the increase in plant number per unit area. Seed and oil yield with 45x25 cm inter and intra row spacings were 59.6% and 52.9% higher as compared to 70x40 cm spacing, respectively. The highest seed and oil yield was obtained from 45x25 cm inter and intra row space under irrigated conditions

scholarly journals MULTIVARIABLE ANALYSIS OF CHARACTERS AFFECTING YIELD IN CHICKPEA PLANTS

2020 ◽  
pp. 155-160
Author(s):  
Ufuk Karadavut ◽  
Omer Sozen
Keyword(s):  
Seed Weight ◽  
Unit Area ◽  
Multivariable Analysis ◽  
Oil Yield ◽  
Row Spacing ◽  
Plant Yield ◽  
Yield Parameters ◽  
Row Space ◽  
Thousand Seed Weight ◽  
Number Of Seeds

The aim of this study was to determine the appropriate inter and intra row spacing of sunflower irrigated during the critical growing stages to obtain the highest seed and oil yields. The experiment was carried out with three replications in the randomized blocks with split plots design in 2016 and 2017. Inter row spacings (45 and 70 cm) were placed on the main plots and intra row spacings (20, 25, 30, 35 and 40 cm) were placed on the subplots. Bosfora, oilseed hybrid sunflower variety was used as plant material. It has been determined that inter and intra row spaces had statistically significant effects on sunflower development and yield parameters. In general, as the distance between the inter and intra rows narrowed, plant height was increased, while the stem and table diameters, the number of seeds in the table, thousand seed weight, oil rate and per plant yield were decreased. And also seed and oil yield was increased, in contrast to per plant yield, due to the increase in plant number per unit area. Seed and oil yield with 45x25 cm inter and intra row spacings were 59.6% and 52.9% higher as compared to 70x40 cm spacing, respectively. The highest seed and oil yield was obtained from 45x25 cm inter and intra row space under irrigated conditions.

Crop density and seed production of creeping red fescue (Festuca rubra L. var. rubra). 2. Reproductive components and seed characteristics

1996 ◽  
Vol 76 (2) ◽  
pp. 299-306 ◽  
Author(s):  
N. A. Fairey ◽  
L. P. Lefkovitch
Keyword(s):  
Seed Yield ◽  
Seed Weight ◽  
Initial Density ◽  
First Year ◽  
Row Spacing ◽  
Festuca Rubra ◽  
Red Fescue ◽  
Crop Density ◽  
Seed Characteristics ◽  
Number Of Seeds

The natural growth habit of creeping red fescue (Festuca rubra L. var. rubra) involves a steady proliferation of tillers which eventually become too dense to form seedheads. The effects of the initial density (1.6, 3.1, 6.3, 12.5, 25, 50 and 100 plants m−2) and row spacing (20, 40 and 80 cm) on reproductive components and seed characteristics of red fescue were studied in a northerly environment for three production years (1991–1993) The weight proportion of cleaned to uncleaned seed decreased as density increased, from 82% at 1.6 plants m−2 to 60% at 100 plants m−2. The thousand-seed weight was 1.20–1.54 g (i.e., 830 000–650 000 seeds kg−1) and decreased as density increased. The specific seed weight was 16–25 kg hL−1; it differed among years and decreased as density increased. The germination capacity of the seed was unaffected by density but differed among years, averaging 87, 92 and 69% in the three consecutive production years. The seed yield per plant, the number of seedheads per plant, and the number of seeds per plant decreased exponentially as the density increased. The number of seeds per seedhead decreased as density increased in the first year but was less affected subsequently, except in the third year at 50 and 100 plants m−2 on 20-cm rows, when no seeds were matured. The seed yield was correlated closely with the number of seedheads per square metre, which increased with density in the first year but decreased as density increased in the two subsequent years. A relatively high density of well-spaced plants is required at establishment to optimize seedhead formation in the first crop but is detrimental to seedhead formation and seed yield subsequently. Key words: Red fescue; Festuca rubra var. rubra, population density, plant and row spacing, yield components, seed quality

Irrigation and Nitrogen Studies in s. 23 Ryegrass Grown for Seed: 1. Growth, Development, Seed Yield Components and Seed Yield

1977 ◽  
Vol 88 (3) ◽  
pp. 605-614 ◽  
Author(s):  
P. D. Hebblethwaite
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
Dry Matter ◽  
Field Experiments ◽  
Unit Area ◽  
Yield Response ◽  
Seed Yield Components ◽  
Seed Yields ◽  
Number Of Seeds

SUMMARYThe effects of irrigation and nitrogen on S. 23 perennial ryegrass grown for seed were investigated in a series of field experiments from 1972 to 1974. Irrigation significantly increased seed yield by 16% in 1972 and 52% in 1974 but had no effect in the wet year of 1973. In 1972 maximum deficit reached 110 mm at the end of July and coincided with anthesis. Consequently the yield response was due to an increase in number of seeds per unit area and no other seed yield component was affected. In 1974 peak deficit also reached about 100 mm but started to build up rapidly very early in the season and had reached 80 mm by the time that the first ears emerged. Consequently the yield response was due to increases in number of fertile tillers, number of seeds per unit area and 1000-seed weight.Irrigation had no significant effect on number of florets or seeds, except in 1974 when percentage of florets which produced seed was increased by 2%.Irrigation had some effect on threshed straw yields, total dry matter, harvest index and total number of tillers but where this occurred the response was much smaller than that of seed yield which indicates that irrigation had greater effects on the reproductive development of the crop than on yield of dry matter and tillering patterns. Increasing the quantity of nitrogen from 0 to 80 kg/ha increased seed yields, all seed yield components except 1000-seed weight, threshed straw yields and total dry matter and number of tillers at most sampling dates. Increasing the quantity of nitrogen from 80 to 160 kg/ha had little further effect on the above components except in 1972 where seed yields were significantly decreased.In 1972 number of florets was increased and percentage of florets which produced seed decreased with increasing quantities of nitrogen.

scholarly journals Influence of crop management on formation of yield components of winter oilseed rape

2019 ◽  
Vol 65 (No. 1) ◽  
pp. 21-26
Author(s):  
Vítězslav Krček ◽  
Petr Baranyk ◽  
Václav Brant ◽  
Josef Pulkrábek
Keyword(s):  
Oilseed Rape ◽  
Yield Components ◽  
Field Experiments ◽  
Unit Area ◽  
Statistical Significance ◽  
Yield Component ◽  
Row Spacing ◽  
Winter Oilseed Rape ◽  
Positive Effect ◽  
Number Of Seeds

The habitus of oilseed rape and its yield component values can be strongly affected by the structure of its stand. Field experiments took place in Central Bohemia in years 2013–2015 aiming at determining the influence of row-spacing (12.5, 25, 35 and 45 cm) on the yield components. Chosen parameters (the number of plants per unit area, the number of pods per plant, the number of seeds per pod and yield) were evaluated at the monitored stands (30 seeds/m<sup>2</sup> sowing rate, cv. DK Exquisite). The study confirmed the statistical significance of the influence of row-spacing on some winter oilseed rape yield components. Widening of the row-spacing has led to a decrease in the number of pods per plant and the number of plants per unit area and an increase in the number of seeds per pod parameter. 1000 seed weight was not affected. This study did not confirm a positive effect of sowing oilseed rape in rows wider than 12.5 cm. Therefore, such an agronomical decision cannot be recommended as a way to achieve higher seed yield.

Effect of plant populations and row spacings on early and late maize hybrids in the Ord Valley

1975 ◽  
Vol 15 (74) ◽  
pp. 406 ◽  
Author(s):  
DF Beech ◽  
JJ Basinski
Keyword(s):  
Seed Weight ◽  
Dry Matter ◽  
Population Increase ◽  
Row Spacing ◽  
Research Station ◽  
Nitrogen And Phosphorus ◽  
Plant Populations ◽  
Maize Hybrids ◽  
Maize Cultivars ◽  
Number Of Seeds

The effect of three row spacings (50 cm, 75 cm and 100 cm) and three plant populations (44,500, 59,300 and 89,000 plants ha-1) on two maize cultivars (short, early XL 45 and tall, late Q 692) was investigated at Kimberley Research Station. None of the crop measurements was significantly affected by row spacing. Tasselling, silking and maturity occurred respectively 10, 12 and 16 days later in Q 692 than in XL 45. Their time of occurrence was not affected by populations. Q 692 was considerably taller and had more leaves per plant. Its canopy thickness above the cobs was also considerably greater. At silking, total dry matter was higher in Q 692, and in both cultivars higher at higher population densities. The production of dry matter after silking increased with increasing populations in XL 45 but declined in Q 692. The grain yield of XL 45 increased significantly up to 59,300 plants ha-1 and then levelled off. On the other hand the yield of Q 692 fell significantly with each population increase. Population had no effect on mean seed weight, which was slightly higher in Q 692. The detrimental effects of increasing population on the number of barren plants and on the number of seeds per cob were offset by the higher number of cobs per hectare in XL 45 but not in Q 692. Nitrogen and phosphorus contents were not affected by populations and were similar in both hybrids

Effect of spacing on growth and yield of sunflower (Helianthus annuus L.) under two systems of dry farming in Sudan

1984 ◽  
Vol 103 (1) ◽  
pp. 213-222 ◽  
Author(s):  
F. M. Khalifa
Keyword(s):  
Yield Components ◽  
Unit Area ◽  
Growth And Yield ◽  
Row Spacing ◽  
Commercial Scale ◽  
Supplementary Irrigation ◽  
Row Width ◽  
Rainfed Conditions ◽  
Dry Farming ◽  
Number Of Seeds

SummaryAn experiment was conducted over a 2-year period at two sites in the central rainlands of Sudan under rainfed conditions at one location and under supplementary irrigation at the other to investigate the effects of cultivars and spacing on yield and yield components of sunflower. Row spacing had no significant effect on grain yield under either system of production. Under rainfed conditions, the late maturing cultivar Manchurian performed better under wider row spacing than Hungarian-A which is a medium late maturing variety. Size and number of seeds weie significantly affected by row width. It is argued that the choice of a row spacing for sunflower production on a commercial scale in dry regions should be evaluated in association with machine efficiency which is affected by plant height, stem circumference, head diameter and lodging, all of which were significantly affected by row width. Also the number of plants established per unit area of land differed between systems of farming.

scholarly journals KORELASI DAN SIDIK LINTAS KARAKTER PERTUMBUHAN DAN KOMPONEN HASIL DENGAN HASIL PADA 15 GENOTIPE HIBRIDA JAGUNG

2020 ◽  
Vol 22 (1) ◽  
pp. 1-8
Author(s):  
Hellianti Pennita ◽  
Catur Herison ◽  
Marwanto Marwanto ◽  
Rustikawati Rustikawati
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Maize Yield ◽  
Yield Component ◽  
Growth And Yield ◽  
Total Biomass ◽  
Maize Hybrid ◽  
Maize Hybrids ◽  
Positive Correlation ◽  
Number Of Seeds

[PATH ANALYSIS OF GROWTH CHARACTERS AND YIELD COMPONENTS WITH THE YIELD OF 15 GENOTYPES OF MAIZE HYBRID].  Determination of traits used as the selection criteria are based on the trait(s) that have a close relationship to the yield.  The aims of this research were to measure the closeness of the relationship between morphological (growth and yield component) traits and crop yield, and to determine the trait that directly or indirectly affected on maize yield.  The research was conducted in Rimbo Kedui’s Village, South Seluma Subdistrict, Seluma District, Bengkulu Province on May 2017 to August 2017.  The experimental design used was a Complete Randomized Block Design (CRBD) in a single factor with 3 replications.  The treatments were 15 maize hybrid genotypes, consisting of CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8, CT9, CT10, CT11, CT12, CT13, CT14, and CT15.  The data were statistically analyzed by analysis of varians (ANOVA) with P(a=5%).  The qualitative data were analyzed descriptively. The result of correlation analysis revealed that the yield of maize hybrids highly correlated to some growth and yield component factors.  High-yielding maize hybrids were supported by higher ear diameter, plant fresh weight, plant dry weight, plant height, the number of seeds per ear.  Plant dry weight became the variable that has the highest direct effect with positive correlation on the yield.  The second highest rank was the number of seeds per ear with also a positive correlation value.  Yield improvement of maize hybrid, therefore, can be obtained by fostering the plant total biomass and/or by multiplying the number of seeds per ear.

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