The effect of plant population and distribution on the yield and quality of swedes

1965 ◽  
Vol 65 (1) ◽  
pp. 91-99 ◽  
Author(s):  
R. W. Lang ◽  
J. C. Holmes
Keyword(s):  
Total Yield ◽  
Population Level ◽  
Plant Population ◽  
Plant Spacing ◽  
Lower Yield ◽  
Plant Populations ◽  
Yield And Quality ◽  
Small Roots ◽  
Regular Spacing

1. An investigation into the effects of plant population level and irregularity of plant spacing on the yield and quality of swedes is reported.2. There was no significant evidence that irregular plant spacing, such as might be produced by mechanical singling, gave a lower yield than regular spacing.3. Total yield of roots was similar for all plant populations tested (range 15,000–50,000) but at low populations both the number and weight of diseased roots was greater than at higher populations.4. As the population was increased, the drymatter percentage in the roots increased due to the higher proportion of skin on small roots compared with large roots.

Effect of Plant Population on Muskmelon Yield and Quality

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 545c-545
Author(s):  
Allan C. Thornton ◽  
Jonathan R. Schultheis ◽  
S. Alan Walters
Keyword(s):  
North Carolina ◽  
Drip Irrigation ◽  
Plant Population ◽  
The Other ◽  
Soluble Solids ◽  
Plant Spacing ◽  
Plant Populations ◽  
Yield And Quality ◽  
Black Plastic ◽  
Marketable Fruit

Muskmelon plant populations and arrangements were evaluated at two sites in North Carolina in 1997. Within-row plant spacings of single rows were 0.15, 0.30, 0.46, 0.61, and 0.76 m, while staggered twin row spacings were 0.30, 0.46, and 0.61 m. The trials were conducted on black plastic with drip irrigation at both locations using the `Athena' cultivar. One trial was seeded 22 Apr., the other was transplanted 21 May. Yield was recorded as fruit number and weight. Soluble solids measurements were also taken. Yields were nearly two times greater when planted on 22 Apr. than 21 May. Yields in the later planting ranged between 13,300 and 18,800 melons per hectare, while yields in the earlier planting ranged between 23,700 and 31,600 melons per hectare. Populations arranged in staggered twin rows on the bed provided no yield advantage compared with single rows. As in-row plant spacing increased, yields of large-sized fruit (>2.0 kg) tended to be greater, while production of smaller size marketable fruit (1.4 to 2.0 kg) tended to be greater as in-row plant spacing decreased. Soluble solids were not affected by plant population.

IRRIGATION, SPACING AND NITROGEN EFFECTS ON YIELD AND QUALITY OF PICKLING CUCUMBERS GROWN FOR MECHANICAL HARVESTING

1980 ◽  
Vol 60 (3) ◽  
pp. 923-928 ◽  
Author(s):  
JOHN O’SULLIVAN
Keyword(s):  
Fruit Quality ◽  
Plant Density ◽  
Plant Population ◽  
Limiting Factor ◽  
Plant Populations ◽  
Yield And Quality ◽  
High Plant Density ◽  
Pickling Cucumbers ◽  
Effect On Yield

The effects of plant spacing and irrigation at two rates of N in 1977 and 1978 and one rate of N in 1979 on yield and quality of pickling cucumbers (Cucumis sativus L.) harvested once-over was investigated. Plant populations significantly affected yield, with highest yields produced at the highest population of 64 plants/m2 each year. Irrigation and N rate had no significant effect on yield. Lack of soil moisture was not a limiting factor on yield during the critical growth stage of early fruit set in any year. Plant population also significantly affected fruit quality. In general, fruit quality decreased as plant population increased. Irrigation affected fruit quality only in 1977 while N rate affected quality in 1977 and 1978. Fruit color was affected by irrigation and N, but not by plant populations. Planting arrangement had no significant effect on yield or quality. Tissue N decreased with increasing population and irrigation in 1977 and indicated an increased demand for N when cucumbers are produced with irrigation at high plant density.

Agronomic Factors Influencing Yield and Quality of Groundnuts in the Sudan Gezira

1967 ◽  
Vol 3 (1) ◽  
pp. 41-53 ◽  
Author(s):  
W. M. Tahir ◽  
M. S. Misovic
Keyword(s):  
Oil Content ◽  
Clay Soil ◽  
Plant Population ◽  
Higher Plant ◽  
Plant Populations ◽  
Kernel Weights ◽  
Yield And Quality ◽  
Heavy Clay ◽  
Sudan Gezira

SummaryAn early upright-bunch variety of groundnut, Barberton, and a medium-late spreading-bunch variety, Ashford, were compared at 7·5, 15·0 and 30·0 cm. intra-row spacings planted at one and two kernels per hill on 60 cm. ridges in the irrigated heavy clay soil of the Sudan Gezira in 1963 and 1964. Barberton was harvested on days 95, 110 and 125, and Ashford on days 125, 140 and 155 after planting in July–August. Ashford outyielded Barberton at the lower densities, and the best pod yields were obtained on day 125 harvest at a population of 55,000–60,000 plants per acre. A higher plant population depressed the yield of Ashford while the increased pod yield of Barberton was not significant. Field germination of kernels increased more in Barberton with delay in harvest and with decrease in plant population than in Ashford. Mean pod and kernel weights and shelling out-turn of Barberton increased with delay in harvest. Barberton gave higher oil content and shelling out-turn, and lower proportion of pods with single kernels than Ashford. The highest population of Barberton gave the best oil content in early harvests. In general, the arrangement of plants within rows at similar populations had only small effects except on the quality of nuts, which was improved by planting single kernels at close spacing (7·5 cm.) with the variety Barberton and two kernels at wide spacing (15·0 cm.) with Ashford, at optimum plant populations.

Influence of seed rate and sowing date on the yield and grain quality of Blenheim spring malting barley in the south-east of Ireland

1998 ◽  
Vol 130 (3) ◽  
pp. 307-315 ◽  
Author(s):  
M. J. CONRY
Keyword(s):  
Sowing Date ◽  
Malting Barley ◽  
Lower Yield ◽  
Plant Populations ◽  
Seed Rate ◽  
Yield And Quality ◽  
Significant Difference ◽  
1000 Grain Weight ◽  
Different Soils

The effect of four seed rates on the grain yield, grain N content and grain size of Blenheim malting barley sown on two dates in the spring was tested on three different soils over a 4-year period (1991–94). The four seed rates (120, 160, 200 and 240 kg/ha) gave mean plant populations of 222, 308, 374 and 430 plants/m2, respectively, for the first sowing date (February to early March) and 235, 340, 405 and 470 plants/m2 for the second sowing date, 3–5 weeks later (late March to mid-April). The earlier-sown crops generally gave greater yield, lower grain N and smaller amount of screenings, but in two of the twelve experiments, the first sowing gave lower yield and greater grain N.The influence of seed rate on yield and quality depended on sowing date. The three higher seed rates (160, 200, 240 kg/ha) had little influence on yield or grain N, irrespective of sowing date, and there was no significant difference in yield between the lowest (120 kg/ha) and the three higher seed rates when the crop was sown in February and early March. But when the crops were sown in April, the lowest seed rate (120 kg/ha) gave the lowest yield in all seven comparisons and gave significantly reduced yield in three of the seven comparisons. There was a significant increase in grain N in three of the comparisons. Seed rate had little effect on grain screenings or 1000-grain weight. Soil differences did not influence the effect of seed rate on the yield and quality of the grain.

scholarly journals The effect of increasing plant population on maize silage yield and quality

2003 ◽  
pp. 117-121
Author(s):  
R.J. Densley ◽  
R.J. Brenton-Rule ◽  
G.M. Austin ◽  
D.W. Densley ◽  
R. Tsimba
Keyword(s):  
Dry Matter ◽  
Plant Population ◽  
Maize Silage ◽  
Higher Plant ◽  
Plant Populations ◽  
The Past ◽  
Yield And Quality ◽  
Established Plant ◽  
Modern Maize

For the past decade maize silage has been planted at 100000 plants/ha in New Zealand. Modern maize silage hybrids have enhanced stress tolerance making them more adaptable to higher plant populations. This study examined the effect of a range of established plant populations (85000, 100000, 115000, 130000 and 145000 plants/ha) on the yield and quality of 12 Pioneer® brand maize silage hybrids grown at 13 locations over two seasons. As plant population increased maize silage dry matter (DM) yield increased significantly (P

scholarly journals Plant spacing and pollen quantity on yield and quality of squash seeds

2003 ◽  
Vol 21 (3) ◽  
pp. 443-447 ◽  
Author(s):  
Márcio S. de Lima ◽  
Antonio I. I. Cardoso ◽  
Marcelo F. Verdial
Keyword(s):  
Seed Yield ◽  
Seed Quality ◽  
Block Design ◽  
Fruit Production ◽  
Plant Spacing ◽  
Plant Seed ◽  
Yield And Quality ◽  
Randomized Complete Block Design ◽  
Pollen Quantity

Squash seeds yield and quality can be improved by proper population plant spacing and the pollen quantity, which influences the pollination quality and fertilization. Nine experiments were conducted as a factorial combination of three spacing between plants (0.8 x 0.3, 0.8 x 0.6 and 0.8 x 0.9 m), two quantities of pollen (50% of an anther and another entire one) and natural insect pollination. Seed and fruit production parameters, and seed quality were evaluated. A randomized complete block design, five replications, with ten plants per plot was adopted. Larger plant spacing increased the average number of mature fruits and seed yield per plant. Seed yield was directly proportional to the amount of pollen used during pollination. Higher amounts of pollen resulted in higher seed yield per area, but the plant spacing did not affect this characteristic. Manual pollination, using a whole anther, did not differ from natural pollination in relation to seed yield and quality.

scholarly journals Yield and quality of early cabbage (Brassica oleracea L. var. capitata) in response to within-row plant spacing

2007 ◽  
Vol 89 (1) ◽  
Author(s):  
Dragan ŽnidarČiČ ◽  
Nina Kacjan-MarŠiĆ ◽  
Jože Osvald ◽  
Tomaž Požrl ◽  
Stanislav Trdan
Keyword(s):  
Brassica Oleracea ◽  
Plant Spacing ◽  
Yield And Quality ◽  
Brassica Oleracea L

scholarly journals Effect of different staking methods and stem pruning on yield and quality of summer tomato

2016 ◽  
Vol 41 (3) ◽  
pp. 419-432
Author(s):  
MS Alam ◽  
N Islam ◽  
S Ahmad ◽  
MI Hossen ◽  
MR Islam
Keyword(s):  
Fruit Quality ◽  
Fruit Set ◽  
Block Design ◽  
Total Yield ◽  
Point Of View ◽  
Fruit Firmness ◽  
Economic Point ◽  
Yield And Quality ◽  
Agriculture Research Institute

The study was carried out during summer of 2012 with BARI hybrid tomato 4, planted in the Olericulture farm of Bangladesh Agriculture Research Institute, Joydebpur, Gazipur, Bangladesh to find out the response of plants to some staking and pruning treatments on yield, fruit quality and cost of production. A two factor experiment consisting of three staking methods and four level of pruning, laid out in complete block design with three repetitions. Plants were staked on inverted „V? shaped staking, high platform and string. The plants were pruned to two stem, three stem, four stem and no pruning as control. Results showed that significantly the highest total number of fruits per plant (37.1), marketable fruits per plant (33.7), yield per plant (1.68 kg) and total yield (44.6 t/ha) were produced by the plants having the treatment string staking with four stem. The highest fruit set (43.50%) was found in the plants staking with string having three stems. Plants grown on string staking allowing two stem gave the maximum length (4.71 cm), diameter (4.83 cm) and weight (53.4g) of single fruit as well as maximum fruit firmness (3.43 kg-f cm-2). From the economic point of view, it was apparent that summer tomato produced by string staking with four stem pruning exhibited better performance compared to other treatment combinations in relation to net return and BCR (2.10).Bangladesh J. Agril. Res. 41(3): 419-432, September 2016

Effect of density on growth, development, yield and quality of kabocha (Cucurbita maxima)

1998 ◽  
Vol 38 (2) ◽  
pp. 195
Author(s):  
T. Botwright ◽  
N. Mendham ◽  
B. Chung
Keyword(s):  
Vegetative Growth ◽  
Plant Density ◽  
Total Yield ◽  
Cucurbita Maxima ◽  
Marketable Yield ◽  
Yield And Quality ◽  
High Plant Density ◽  
Plant Densities ◽  
Growth Development

Summary. The effect of plant density on growth, development, yield and quality of kabocha (buttercup squash) (Cucurbita maxima) was examined during 1992–93, at a field site in Cambridge, Tasmania. Plant densities ranged between 0.5 and 4.7 plants/m2. Marketable and total yields were fitted to a yield–density model. Total yield followed an asymptotic trend, approaching 33 t/ha at 4.7 plants/m2, while marketable yield had a parabolic relationship with density. Marketable yield increased to a maximum of 18 t/ha at 1.1 plants/m2, while declining at higher densities because of increased numbers of undersized fruit. Yield of vine marked and callused fruit did not vary with density, but represented a significant proportion of the total yield at all densities. High plant density reduced vegetative growth per plant due to competition for limited resources; as shown by decreased leaf area, number and length of vines, and plant dry weight. Yield tended to decline at high densities because of fewer female flowers and increased fruit abortion per plant. Plants at low densities had more vegetative growth but decreased yields, as increased abortion of fruit relative to the higher plant densities left only 1–2 large fruit per plant. Economic returns varied with plant density. At high densities, variable costs increased (particularly due to high seed cost) while gross income declined reflecting the relationship between marketable yield and plant density. The gross margin therefore declined at high densities.

Sign in / Sign up

Export Citation Format

Share Document