INFLUENCE OF DIFFERENT PLANT DENSITIES ON THE YIELD AND QUALITY OF GREENHOUSE-GROWN CUCUMBERS GRAFTED ON SHINTOZA (CUCURBITA MAXIMA X CUCURBITA MOSCHATA)

2002 ◽  
pp. 63-67 ◽  
Author(s):  
P.H. Echevarría ◽  
A.R. Castro
Keyword(s):  
Cucurbita Moschata ◽  
Cucurbita Maxima ◽  
Yield And Quality ◽  
Plant Densities

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.

Effect of different rootstock on plant growth, yield and quality of watermelon

2003 ◽  
Vol 43 (10) ◽  
pp. 1269 ◽  
Author(s):  
H. Yetisir ◽  
N. Sari
Keyword(s):  
Plant Growth ◽  
Citrullus Lanatus ◽  
Total Yield ◽  
Growth Yield ◽  
Dry Weight ◽  
Cucurbita Moschata ◽  
Cucurbita Maxima ◽  
Yield And Quality ◽  
Potential Use

This study was conducted in Department of Horticulture, Faculty of Agriculture, University of Cukurova in 1999 and 2000. Watermelon [Citrullus lanatus (Thunb.) Matsum and Nakai] cultivar Crimson Tide was grafted onto 10 different rootstocks. Cucurbita moschata, Cucurbita maxima and Lagenaria siceraria were open pollinated cultivars, and Strong Tosa, Gold Tosa, P360 (Cucurbita maxima × Cucurbita moschata), Skopje, Emphasis, 216 and FRG (Lagenaria spp.) were hybrid cultivars. The ungrafted Crimson Tide watermelon cultivar was used as the control. Plants were grown under low tunnel conditions until the outdoor temperature was suitable (22–25°C) for watermelon growth. Our results showed that while survival rate was low (65%) in Cucurbita type rootstocks, it was high (95%) in Lagenaria type rootstocks. Grafted plants flowered about 10 days earlier and showed more vigorous vegetative growth than the control plants. Grafted plants had up to 148% higher fresh weights than control plants. Similarly, grafted plants showed 42–180% higher dry weight, 58–100% more leaves and larger leaf area as compared with the control. In total yield, Lagenaria type rootstocks produced a higher yield but Cucurbita type rootstocks produced a lower yield than the control. While control plants had 6.43 kg/m2 yield, Lagenaria type rootstocks produced 27–106% higher yield than the control. In contrast, Cucurbita type rootstocks had 127–240% less yield than the control. This could be attributed to incompatibility of Cucurbita rootstocks because some of the plants died before harvest. The study showed that rootstock choices influence plant growth as well as yield and quality of scion fruit, suggesting an important consideration in the potential use of grafting applications in watermelon.

scholarly journals INFLUENCE OF ROOTSTOCKS ON Fusarium WILT, NEMATODE INFESTATION, YIELD AND FRUIT QUALITY IN WATERMELON PRODUCTION

2015 ◽  
Vol 39 (4) ◽  
pp. 323-330 ◽  
Author(s):  
Juan Carlos Álvarez-Hernández ◽  
Javier Zaragoza Castellanos-Ramos ◽  
César Leobardo Aguirre-Mancilla ◽  
María Victoria Huitrón-Ramírez ◽  
Francisco Camacho-Ferre
Keyword(s):  
Fusarium Oxysporum ◽  
Fruit Quality ◽  
Meloidogyne Incognita ◽  
Citrullus Lanatus ◽  
The Other ◽  
Cucurbita Moschata ◽  
Cucurbita Maxima ◽  
Plant Densities ◽  
Production Cycles ◽  
Lower Plant

Cucurbita maxima x Cucurbita moschata rootstock are used to prevent infection with Fusarium oxysporum f. sp. niveum in watermelon production; however, this rootstock is not effective against nematode attack. Because of their vigor, the grafted plants can be planted at lower plant densities than the non-grafted plants. The tolerance to Fusarium oxysporum f. sp. niveum and Meloidogyne incognita was assessed in watermelon plants grafted onto a hybrid of Citrullus lanatus cv Robusta or the Cucurbita maxima x Cucurbita moschata cv Super Shintoza rootstocks. The densities of plants were 2083 and 4166 plants ha-1. Non-grafted watermelons were the controls. The Crunchy Red and Sangría watermelon cultivars were used as the scions, it the latter as a pollinator. The experiments were performed for two production cycles in soils infested with Fusarium oxysporum f. sp. niveum and Meloidogyne incognita. The incidence of Fusarium oxysporum f. sp. niveum was significantly greater in the non-grafted than in the grafted plants. The grafted plants presented similar resistance to Fusarium regardless of the rootstock. The root-knot galling index for Meloidogyne incognita was significantly lower in plants grafted onto Citrullus lanatus cv Robusta than onto the other rootstock. The yields of plants grafted onto Citrullus lanatus cv Robusta grown at both plant densities were significantly higher than in the other treatments.

Hybrid and population density affect yield and quality of silage maize in central Alberta

2007 ◽  
Vol 87 (4) ◽  
pp. 867-871 ◽  
Author(s):  
D. Stanton ◽  
A. W. Grombacher ◽  
R. Pinnisch ◽  
H. Mason ◽  
D. Spaner
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
North Central ◽  
Heat Units ◽  
Silage Maize ◽  
Yield And Quality ◽  
Northern Latitudes ◽  
Early Maturing ◽  
Plant Densities

Four maize (Zea mays L.) hybrids planted at varying plant densities were evaluated for their yield, maturity, and quality across environments in north central Alberta. Given the balance of yield and quality, very early maturing hybrids [2000 corn heat units (CHU)] planted at ~100 000 plants ha-1 are recommended for north central Alberta. Key words: Corn; Zea mays L.; northern latitudes; corn heat units

Effect of drying and co-matrix addition on the yield and quality of supercritical CO2 extracted pumpkin (Cucurbita moschata Duch.) oil

2014 ◽  
Vol 148 ◽  
pp. 314-320 ◽  
Author(s):  
Miriana Durante ◽  
Marcello S. Lenucci ◽  
Leone D’Amico ◽  
Gabriella Piro ◽  
Giovanni Mita
Keyword(s):  
Supercritical Co2 ◽  
Cucurbita Moschata ◽  
Yield And Quality

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 Yield and quality of grain amaranth (Amaranthus sp.) in Eastern Austria

2008 ◽  
Vol 53 (No. 3) ◽  
pp. 105-112 ◽  
Author(s):  
D.M. Gimplinger ◽  
G. Dobos ◽  
R. Schönlechner ◽  
H.-P. Kaul
Keyword(s):  
Management Practices ◽  
Genotypic Differences ◽  
Crude Fibre ◽  
Grain Composition ◽  
Grain Amaranth ◽  
Yield And Quality ◽  
Crop Density ◽  
Plant Densities ◽  
Eastern Austria

The introduction of a new crop requires adapted genotypes as well as optimum crop management practices. This study was conducted to determine the optimum crop density of adapted grain amaranth genotypes in the Pannonian region of Eastern Austria. The genotypes Neuer Typ (<i>A. hypochondriacus</i>), Mittlerer Typ (<i>A. hypochondriacus</i>) and Amar (<i>A. cruentus</i>) were established at plant densities of 8, 17 and 35 plants/m<sup>2</sup> in 2002 and 2003. Average hand-harvested yields ranged from 2200 to 3000 kg/ha without significant genotypic differences. Genotypes differed in thousand seed weight (0.55&minus;1.04 g), time from sowing to harvest (97&minus;130 days), grain water content at harvest (24&minus;38%), microbial infestation of air-dried grain (0.2&minus;118.6 cfu &times; 10<sup>6</sup>/g), germination (29&minus;79%) and grain composition. Grain contents fell within the following ranges: crude protein 15.2&minus;18.6%, crude fat 5.4&minus;8.6%, crude fibre 3.5&minus;4.2%, ash 2.7&minus;3.2%, and carbohydrates 66.7&minus;72.7%. High grain water contents involved stronger microbial infestation and reduced germination. Crop density affected neither grain yield nor grain quality.

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

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