Response of broccoli (Brassica oleracea var. italica) yield and hollow stem to plant density, trickle irrigation and transplanting date

2010 ◽  
Vol 90 (5) ◽  
pp. 729-735
Author(s):  
K R. Sanderson ◽  
S. A. E. Fillmore
Keyword(s):  
Brassica Oleracea ◽  
Plant Density ◽  
Leaf Tissue ◽  
Field Studies ◽  
Trickle Irrigation ◽  
Marketable Yield ◽  
Yield And Quality ◽  
Plant Densities ◽  
Brassica Oleracea L

Maximizing yield and quality of processing broccoli (Brassica oleracea L. var. italica) is critical to successful production in Atlantic Canada. Field studies were conducted from 2004 to 2006 to evaluate the effect of plant density and trickle irrigation on the yields and incidence of hollow stem for early and late transplanting of broccoli. Treatments consisted of five plant densities ranging from 3.17 to 6.35 plants m–2. Each plant density was either not irrigated or trickle irrigated to maintain at least 25 mm total precipitation per week. The highest marketable yield was achieved at 5.56 plants m–2 when grown in an early transplanting with trickle irrigation in a single row with 90 cm between the row and 20 cm within the row. Overall, earlier transplanting dates were more productive. Trickle irrigation increased marketable yield by an average of 12% over the 3 yr of tests. Average head weight, head diameter, and the incidence of hollow stem decreased as plant density increased. Leaf tissue N was not affected by plant density, trickle irrigation or transplanting date.Key words: Brassica oleracea L. italica, plant density, yield, growth

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.

scholarly journals Yield of determinate tomato cultivars grown in a closed hydroponic system as affected by plant spacing

2017 ◽  
Vol 35 (2) ◽  
pp. 258-264 ◽  
Author(s):  
Martin M Maboko ◽  
Christian P Du Plooy ◽  
Silence Chiloane
Keyword(s):  
Plant Density ◽  
Summer Season ◽  
Plant Spacing ◽  
Marketable Yield ◽  
Fall Season ◽  
Yield And Quality ◽  
Plant Densities ◽  
Tomato Cultivars ◽  
Hydroponic Systems

ABSTRACT In South Africa there are no established spacing recommendations for determinate tomato cultivar production under closed hydroponic systems. This study was conducted to determine yield and quality of hydroponically grown determinate tomato cultivars at different plant densities. Four determinate tomato cultivars (Dynimo, Mariana, Mion and Sama) were subjected to four plant densities (10, 16, 20 and 25 plants/m2) during the spring/summer and summer/fall seasons. Experimental layout was a randomized complete block design in a factorial scheme of four plant spacing x four cultivars with three replicates. There were no significant differences in marketable yield between the cultivars tested during the spring/summer and summer/fall seasons. Cultivar Mion showed higher incidence of blossom end rot, while Mariana showed the highest fruit rot during the spring/summer season as compared to the other cultivars. During the spring/summer season, marketable yield increased with increased plant density with the highest yield obtained at 25 plants/m2 followed by 20 plants/m2. During the summer/fall season, plant density did not show a significant effect on total and marketable yield although a tendency for declined yield with increased density was observed. Number of fruit per plant as well as fruit size decreased with increased plant density during both seasons which did not have an effect on overall yield per plot area. Increasing the plant density to 25 plants/m2 can improve marketable yield of determinate tomato cultivars during spring/summer season while using a plant density of 10 plants/m2 will be more cost effective during the summer/fall season. This information will enable farmers to optimise yield and quality of determinate tomato cultivars under closed hydroponic systems.

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 Influence of Boron and Molybdenum on Growth, Yield and Quality of Cauliflower (Brassica oleracea L. var. botrytis)

2017 ◽  
Vol 6 (10) ◽  
pp. 3408-3414 ◽  
Author(s):  
Vivek Singh ◽  
Amit Kumar Singh ◽  
Tushar Raghuvanshi ◽  
Maneesh Kumar Singh ◽  
Vineet Singh ◽  
...  
Keyword(s):  
Brassica Oleracea ◽  
Growth Yield ◽  
Yield And Quality ◽  
Brassica Oleracea L

scholarly journals Investigation of some production factors on yield and quality of dry beans

2002 ◽  
Vol 8 (2) ◽  
Author(s):  
E. Nemeskéri
Keyword(s):  
Plant Density ◽  
Medium Size ◽  
Dry Beans ◽  
Potassium Fertilizer ◽  
Production Factors ◽  
Yield And Quality ◽  
Plant Densities ◽  
High Level ◽  
Basic Level

The correlation between plant density and yield average shows that the volume of yield increases in varieties of large and medium-size seeds up to a plant density of 285-400 thousand/ha, after which it declines. On the basis of the results, yield averages at plant densities of 285-334 thousand plant/ha are 0.17 t/ha higher than those achieved at low density (200 thousand plant/ha). High levels of potassium fertilizer did not enhance the yield of dry beans. With adequate-water supply the high level of potassium decreased the number of pods and seeds per plant compared with a basic level of fertilizer, which could ensure 2.5 t/ha yield.

scholarly journals The effect of nitrogen and sulphur fertilization on yield and quality of kohlrabi (Brassica oleracea, L.)

2008 ◽  
Vol 32 (2) ◽  
pp. 697-703 ◽  
Author(s):  
Tomáš Losák ◽  
Jaroslav Hlušek ◽  
Stanislav Kráěmar ◽  
Ladislav Varga
Keyword(s):  
Amino Acids ◽  
Brassica Oleracea ◽  
Essential Amino Acids ◽  
Joint Effect ◽  
Isoleucine Leucine ◽  
Yield And Quality ◽  
Applied Dose ◽  
Leaf Tissues ◽  
Brassica Oleracea L

In a greenhouse pot experiment with kohlrabi, variety Luna, we explored the joint effect of N (0.6 g N per pot = 6 kg of soil) and S in the soil (25-35-45 mg kg-1 of S) on yields, on N, S and NO3- content in tubers and leaves, and on alterations in the amino acids concentration in the tubers. S fertilisation had no effect on tuber yields. The ranges of N content in tubers and leaves were narrow (between 1.42-1.48 % N and 1.21-1.35 % N, respectively) and the effect of S fertilisation was insignificant. S concentration in the tubers ranged between 0.59 and 0.64 % S. S fertilisation had a more pronounced effect on the S concentration in leaf tissues where it increased from 0.50 to 0.58 or to 0.76 % S under the applied dose. The NO3- content was higher in tubers than in leaves. Increasing the S level in the soil significantly reduced NO3- concentrations in the tubers by 42.2-53.6 % and in the leaves by 8.8-21.7 %. Increasing the S content in the soil reduced the concentration of cysteine + methionine by 16-28 %. The values of valine, tyrosine, aspartic acid and serine were constant. In the S0, S1, and S2 treatments the levels of threonine, isoleucine, leucine, arginine, the sum of essential amino acids and alanine decreased from 37 to 9 %. The histidine concentration increased with increasing S fertilisation. S fertilisation of kohlrabi can be recommended to stabilize the yield and reduce the undesirable NO3- contained in the parts used for consumption.

scholarly journals The effect of plant density on seed yield and quality of carrot (Daucus carota L.)

2010 ◽  
Vol 14 ◽  
pp. 75-83
Author(s):  
C.N. Merfield ◽  
J.G. Hampton ◽  
S.D. Wratten ◽  
P. Prapanoppasin ◽  
P. Yeeransiri
Keyword(s):  
Seed Yield ◽  
Daucus Carota ◽  
Seed Quality ◽  
Plant Density ◽  
Seed Vigour ◽  
Daucus Carota L ◽  
Yield And Quality ◽  
Plant Densities ◽  
Thousand Seed Weight

The hypothesis that by increasing carrot (Daucus carota) plant density the contribution to seed yield by the primary umbels would increase, and that therefore both seed yield and seed quality would increase, was examined in two experiments in different years in Canterbury. A radial trial design provided plant densities from 2 to 84 plants/m2 and from 4 to 100 plants/m2 in experiments one and two respectively. Seed yield increased with increasing plant density in both experiments, and at the highest density the primary umbels contributed 90% (experiment one) and 60% (experiment two) of the seed yield. In both experiments seeds from the primary umbels had a greater thousand seed weight and higher germination than those from the other order umbels, and for the second experiment they also had higher seed vigour. The quality of seeds from the primary umbels was consistently higher than that of seeds from the secondary umbels across all plant densities, and for the latter, both germination and seed vigour declined as plant density increased. These results therefore support the hypothesis, and densities higher than the 20 plants/m2 currently used commercially have the potential to increase both seed yield and quality. Keywords: seed production, primary umbels, germination, vigour, plants/m2

scholarly journals RESPONSE OF GROWTH, RESULTS AND QUALITY OF BROKOLY VARIETIES (Brassica oleracea L. var. Italica) IN VARIOUS SPACING PLANTS

Agrivet ◽  
2018 ◽  
Vol 24 (2) ◽  
Author(s):  
Dwi Aprilia Ningrum ◽  
Lagiman Lagiman ◽  
Oktavia Sarhesti Padmini
Keyword(s):  
Brassica Oleracea ◽  
Block Design ◽  
Economic Value ◽  
Growth Yield ◽  
Observation Data ◽  
Yield And Quality ◽  
Two Factors ◽  
The Difference ◽  
Brassica Oleracea L

Broccolli (Brassica oleracea L. Var. Italica) is one of the vegetables variety which has lots of nutrients, and it also has high economic value. This research aimed to find out the response of growth, yield, and quality of broccolli (Brassica oleracea L. Var. Italica) varieties among the plant spacings. This research was conducted in Mei until August 2017 in Weron Hamlet, Umbulharjo Village, Cangkringan Subdistrict, Sleman Residence in DIY Province. This research used randomized complete block design (RCBD) which was arranged factorially. It consisted of two factors with three replications. The first factor is broccolli variety that are Griifn (V1), Green Super (V2), and Chief no.2 (V3). The second factor is spacing plants which consists of 4 levels, that are 65cm x 60cm (J1), 70cm x 60cm (J2), 75cm x 60cm (J3), and 80cm x 60cm (J4). The observation data were analyzed for its diversity at the level α = 5%. In addition, Duncan Multiple Range Test (DMRT) at the level α = 5% was used to find out the difference on averange treatment. The result showed that there is an interraction between the treatment variety of broccolli and the plant spacings in harvest parameters. The variety of Green Super which is 80 cm x 60 cm has a good result to broccolli yield. This yield is compared to other treatments. However, the yield is still low if it is seen from the description of variety.Keywords: broccoli, varieties, Plant spacing

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