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.

scholarly journals Between-row spacing and local accession on the yield and quality of garlic

2016 ◽  
Vol 7 (1) ◽  
pp. 112 ◽  
Author(s):  
Jamal-Ali Olfati ◽  
Mohammad-Bagher Mahdieh-Najafabadi ◽  
Mohammad Rabiee
Keyword(s):  
Plant Density ◽  
Cultural Practices ◽  
Block Design ◽  
Growth Yield ◽  
Row Spacing ◽  
Fresh Market ◽  
Yield And Quality ◽  
High Plant Density ◽  
Plant Stand

Garlic is primarily grown for its cloves used mostly as a food flavoring condiment. Previous studies carried out on plant density indicate its direct influence on yield. Plant density depends on the genotype, environmental factors, cultural practices, etc. This study was established to determine the effects of different between-row spacing on growth, yield, and quality of four local accession of garlic. It was laid out on two-factorial Randomized Complete Block Design with three replications during two years. Four local accession of garlic (Langroud, Tarom, Tabriz and Hamedan) were culture in three between-rows spacing (15, 25 and 35 cm) during two years. The results of two cultivated years were different. Plant density changed when garlic cultured with different between row spacing. In present research plant yield increased when the lower between row spacing and high plant density were used but the yield improvement occurring at increased plant stand is offset by the reduction in bulb size and some quality indices such as total phenol and antioxidant which severely affects quality and market value, when garlic is produced for fresh market.

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.

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.

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.

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 Addition of nitrogen had no effect on yield and quality of apples in an high density orchard carrying a dwarf rootstock

2008 ◽  
Vol 30 (4) ◽  
pp. 1113-1118 ◽  
Author(s):  
Paulo Roberto Ernani ◽  
Douglas Antônio Rogeri ◽  
Marcelo Machado Proença ◽  
Jaques Dias
Keyword(s):  
Organic Matter ◽  
Fruit Quality ◽  
Fruit Production ◽  
High Density ◽  
Fruit Yield ◽  
Soluble Solids ◽  
N Addition ◽  
Yield And Quality ◽  
Effect On Yield

The effect of N addition on apple yield and quality may vary according to the tree vigor. Apple trees developed over vigorous rootstocks had shown no response to N application in Brazil. In this study it was evaluated the effect of N addition to the soil on yield and quality of ´Royal Gala´ apples grafted on a dwarf rootstock (M.9). The orchard was planted in 1995 (2,857 trees ha-1) on an Oxisol containing 40 g kg-1 of organic matter and pH 6.0. The experiment was carried out from 1998 up to 2005. Treatments consisted of rates of N (0, 50, 100 and 150 kg ha-1 year-1 from 1998 to 2001, and respectively 0, 100, 200 and 300 kg ha-1 afterwards), all broadcasted within the tree row in two equal splits, at bud break and after harvest, as ammonium sulfate. Addition of N to the soil had no effect on fruit yield over the six years regardless of the applied rate. Averaged across treatments and years, fruit yield was 52.3 t ha-1. Nitrogen in the leaves (average of 24 g kg-1) or in the fruits (average of 346 mg kg-1) as well as some attributes related to fruit quality (color, firmness, acidity, soluble solids, physiological disorders) were unaffected by N addition. Some plant parameters related to tree vigor, however, grew higher with the increase on N rate. Thus, it is not necessary to apply N to deep Brazilian soils containing high organic matter in order to assure good fruit quality and yield on high-density orchards carrying dwarf rootstocks probably because the N required for tree growth and fruit production is supplied from soil organic matter decay.

Development of Organically Complexed-Bioaugmented Boron-Coated DAP and Its Effect on Yield and Quality of Canola (Brassica napus L.)

2021 ◽  
Author(s):  
Tayyaba Samreen ◽  
Muhammad Imran ◽  
Zahir Ahmad Zahir ◽  
Muhammad Zulqernain Nazir ◽  
Saima Noureen ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Brassica Napus L ◽  
Yield And Quality ◽  
Effect On Yield

scholarly journals Deficit Irrigation in Vitis labruscana Bailey ‘Concord’ in Central Washington

HortScience ◽  
2017 ◽  
Vol 52 (3) ◽  
pp. 450-456 ◽  
Author(s):  
Jason E. Stout ◽  
Joan R. Davenport ◽  
R. Troy Peters
Keyword(s):  
Fruit Quality ◽  
Water Availability ◽  
Deficit Irrigation ◽  
Control Treatment ◽  
Commercial Practice ◽  
Yield And Quality ◽  
Vitis Labruscana ◽  
New Strategy ◽  
Sudden Decrease

Drought conditions in the western United States have limited water availability for the irrigation of agricultural products. This can have a dramatic impact on yield and quality of specialty perennial crops, such as juice grapes (Vitis labruscana Bailey). Washington State juice grape industry typically irrigates to 100% of crop-specific evapotranspiration (ETc) throughout the season to minimize yield loss. However, as conditions have limited water availability, growers need a new strategy to cope with the limited water supply. Regulated deficit irrigation (RDI) applies less water than plant ETc and has been shown to improve fruit quality in red wine grapes (Vitis vinifera). The objectives of this study were to evaluate the effects of RDI treatments on the yield and quality of ‘Concord’ juice grapes as compared with current commercial practice. The treatments reduced the amount of water applied between bloom and veraison by 25% (−25%), 33% (−33%), and 45% (−45%) from the control application. The results of this 4-year study initially indicated a dramatic decrease in yield in the −45% treatment (7.5 Mg/ha) as compared with the control treatment (19.2 Mg/ha); however, yield for the RDI treatments recovered in the subsequent seasons and was not statically different from the control. There were no statistical differences in fruit quality between treatments. This indicates that RDI has the potential to decrease water applied between bloom and veraison without impacting fruit quality; however, to avoid a sudden decrease in yield, it would be necessary to gradually reduce water applications over several years.

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