scholarly journals 913 PB 159 FIELD TRIAL WITH SIX MICROPROPAGATED STRAWBERRY CULTIVARS IN EGYPT

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 565a-565
Author(s):  
Fouad H. Moham
Keyword(s):  
Vegetative Growth ◽  
Total Yield ◽  
Fruit Size ◽  
Fruit Production ◽  
Planting Density ◽  
Plant Spacing ◽  
Strawberry Fruit ◽  
Petiole Length ◽  
Production Area ◽  
Strawberry Cultivars

This experiment was conducted at Ismailia, the largest strawberry fruit production area in Egypt. Runner plants of the second progeny of micropropagated cvs.: Parker, Chandler, Sequoia, Selva, Brighton and Douglas were planted in 1992/1993 to study their growth and fruiting behavior in response to planting density and runner removal. For most cvs. tested, vegetative growth i.e; petiole length and leaf area as well as fruiting i.e; fruit number and yield/plant were increased under 50cm. between plant spacing with runner intact. Sequoia, Chandler and Parker produced the best growth. Fruit size increased with 25cm. spacing and runner removal. The highest early yield was that of Sequoia and Douglas which correlated well with the number of flower trusses produced. Chandler and Selva produced the highest total yield followed by Douglas, Sequoia, Parker and Brighton.

scholarly journals Bed Mulch Treatment Affects Strawberry Fruit Bronzing and Yield Performance

HortScience ◽  
2005 ◽  
Vol 40 (1) ◽  
pp. 72-75 ◽  
Author(s):  
Kirk D. Larson ◽  
Steven T. Koike ◽  
Frank G. Zalom
Keyword(s):  
Plant Growth ◽  
Vegetative Growth ◽  
Total Yield ◽  
Fruit Size ◽  
Growth Yield ◽  
High Irradiance ◽  
Lower Percentage ◽  
Strawberry Fruit ◽  
Yield Performance ◽  
Ambient Temperatures

Strawberry plants (`Commander') were grown with different polyethylene bed mulches in the 1999-2000 and 2000-2001 production seasons to determine the effect of mulch on plant growth, yield performance and incidence of Type III strawberry fruit bronzing (T3B), a fruit disorder of unknown origin. In 1999-2000, T3B incidence ranged from 1.8% to 3.7% of total yield, and use of clear, full-bed (CFB) mulch resulted in significantly less T3B incidence than either clear center-strip mulch (CS), or yellow-on-black full-bed mulch. Plant canopy vegetative growth and shoot to root dry mass ratios were greatest for CFB compared to other mulch treatments, but there was no effect of mulch treatment on yield or fruit size. Winter temperatures in 2000-2001 were colder than in 1999-2000, with reduced vegetative growth and increased T3B incidence in spring for all mulch treatments. Use of CFB mulch resulted in greater vegetative growth, greater yield, increased fruit size and reduced T3B incidence compared to CS or green full-bed mulch, but there was no difference among mulch treatments for number of T3B fruit per plot for any single fruit harvest interval. In 2000-2001, the onset of severe T3B symptoms on 7 May was preceded by a brief period of ambient temperatures >31 °C. For all treatments, peak T3B incidence occurred from late May to mid-June, a period characterized by high ambient temperatures and high irradiance conditions. Results indicate that temperature and radiation are significant factors in the development of T3B, and that increased plant vegetative growth in winter results in greater yields and a lower percentage of T3B-affected fruit, particularly in years with cold winters. Managing strawberry plantations to optimize plant growth and development in winter appears to be an effective strategy for reducing the severity of this disorder.

scholarly journals Effect of Irrigation Frequency and Shade Levels on Vegetative Growth, Yield, and Fruit Quality of Piquin Pepper (Capsicum annuum L. var. glabriusculum)

HortScience ◽  
2016 ◽  
Vol 51 (5) ◽  
pp. 573-579 ◽  
Author(s):  
Juan I. Valiente-Banuet ◽  
Alejandro Gutiérrez-Ochoa
Keyword(s):  
Fruit Quality ◽  
Vegetative Growth ◽  
Load Capacity ◽  
Fruit Size ◽  
Growth Yield ◽  
Fruit Production ◽  
Irrigation Frequency ◽  
Horticultural Products ◽  
Yearly Data

In Mexico, piquin peppers are highly valued horticultural products with limited cultivated production due to low seed germination, morphologic and genetic variability, disease susceptibility, and limited environmental physiology information. The objective of this study was to evaluate the effects of irrigation frequency and shade level treatments on vegetative growth, yield, and fruit quality of a commercial ecotype of piquin pepper. The study was conducted during two consecutive years using a hierarchical linear mixed-effects model design, with yearly data of irrigation frequency as main treatment blocks and shade levels as secondary blocks (nested within irrigation frequency treatments). Our results indicate that more frequent irrigation and increased shade levels favored vegetative growth. In addition, moderate shade levels (interception of 35% of full sunlight) and daily irrigation provided the best conditions for fruit production. This effect could be attributed to an increase in vegetative growth (thus higher photosynthetic and crop load capacity); more moderate conditions (temperatures and relative humidity) that favored flowering and fruit set, or a combination of these factors. Fruit size and pungency were not significantly affected by the treatments. Our results provide basic information for the development of guidelines for the cultivation of piquin pepper plants.

scholarly journals Planting density and yield of sweet pepper grown in an organic system

2021 ◽  
Vol 56 ◽  
Author(s):  
André Wagner Barata Silva ◽  
Bruno Diniz Nogueira da Silva ◽  
Ariana Lemes da Costa ◽  
Kaique Castro Cézar ◽  
Luiz Antônio Augusto Gomes ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Production System ◽  
Total Yield ◽  
Fruit Size ◽  
Sweet Pepper ◽  
Organic Production ◽  
Planting Density ◽  
Production Cycle ◽  
Organic System

Abstract The objective of this work was to evaluate the yield and fruit quality of sweet pepper (Capsicum annuum) genotypes grown at various planting densities, in an organic production system under protected cultivation. The experiment was carried out in duplicate, to compare the yield and fruit quality of the 'TE 300', 'Mallorca', and ‘Timor’ sweet pepper genotypes, at the densities of 2, 4, 6, and 8 plants m-2. A randomized complete block design was used, with three replicates, in split plots. Mean fruit size and mass, yield per plant, and total yield were measured. Dunnett’s test was used to compare means between the standard density of 2 plants m-2 and the other densities. Scott-Knott’s test was used to compare the densities within each genotype. The increase of planting density in the organic production system provided a yield similar to that of the conventional system. A greater density increases yield and reduces the production cycle, without impairing the fruit size or quality of the ‘TE 300’ and ‘Timor’ genotypes. The densities of 8 plants m-2 for ‘TE 300’ and 'Timor', and of 6 plants m-2 for ‘Mallorca’ show the highest total yield per hectare.

scholarly journals Growth and Yield of Watermelon on Polyethylene Mulch with Different Spacings and Nitrogen Rates

HortScience ◽  
2005 ◽  
Vol 40 (2) ◽  
pp. 366-369 ◽  
Author(s):  
Smiljana Goreta ◽  
Slavko Perica ◽  
Gvozden Dumicic ◽  
Lovre Bucan ◽  
Katja Zanic
Keyword(s):  
Size Distribution ◽  
Field Experiments ◽  
Fruit Size ◽  
Fruit Weight ◽  
Growth And Yield ◽  
Planting Density ◽  
Plant Spacing ◽  
N Rates ◽  
Polyethylene Mulch ◽  
Leaf N

Suggested watermelon planting densities and N rates vary on a large scale, indicating that there is insufficient knowledge about their effects. Therefore, the objective of this study was to evaluate the effects of N rate and planting density on growth, yield and quality of watermelon [Citrullus lanatus (Thunb.) Matsum & Nakai] grown on black polyethylene mulch. The field experiments with `Crimson Sweet' watermelon were conducted in two climatologically different growing regions. The treatments were factorial combinations of three in-row plant spacings (0.5, 1.0, and 1.5 m) and three N rates (115, 195, and 275 kg·ha-1). Part of the N (35 kg·ha-1) was applied preplant and the remainder was fertigated. Vine length increased linearly up to 7 weeks after planting (WAP) as N rate increased from 115 to 275 kg·ha-1, and up to 9 WAP as plant spacing increased from 0.5 to 1.5 m. Total and marketable yields per ha or per plant did not increase with N rates above 115 kg·ha-1. Average fruit weight and fruit size distribution were generally unaffected by N rate. Leaf N concentration increased as N rate increased, although leaf N concentrations at the lowest N rate (115 kg·ha-1) even at 9 WAP were relatively high (43.3 to 47.3 g·kg-1). Total and marketable yields per ha were linearly decreased with an increase in plant spacing from 0.5 to 1.5 m, and the same was noticed with the total and marketable number of fruit per ha. With increased plant spacing average fruit weight increased and fruit size distribution shifted to larger categories.

scholarly journals Yield and Fruit Size of `Bluecrop' and `Blueray' Highbush Blueberries at Three Plant Spacings

HortScience ◽  
1993 ◽  
Vol 28 (12) ◽  
pp. 1162-1163 ◽  
Author(s):  
James N. Moore ◽  
Maurus V. Brown ◽  
Bruce P. Bordelon
Keyword(s):  
Total Yield ◽  
Fruit Size ◽  
Vaccinium Corymbosum ◽  
Highbush Blueberry ◽  
Plant Spacing ◽  
Plant Yields ◽  
Highbush Blueberries ◽  
Interplant Competition ◽  
Plant Basis

The influence of in-row plant spacing on the yield and fruit size of `Blueray' (erect growing) and `Bluecrop' (spreading) highbush blueberry (Vaccinium corymbosum L.) was studied. Plants of both cultivars, spaced at 0.61 m within the row, had significantly higher yields per hectare than plants grown at wider spacings (0.92 and 1.22 m) in each of five harvest years. On a per-plant basis, however, plants spaced at 1.22 m had higher yields in the last two harvest years of the experiment than plants spaced more closely, which indicated that interplant competition reduced per-plant yields of closely spaced plants as plants grew larger. Over the 5-year harvest period, plots with 0.61-m plant spacing produced a cumulative total yield of 17.24 t·ha more than plots with the conventional 1.22-m spacing. Plant spacing did not affect fruit size in this experiment.

scholarly journals Plant population and pruning of pepper cultivars

1969 ◽  
Vol 75 (3) ◽  
pp. 199-204
Author(s):  
David W. Unander ◽  
Lucas N. Avilés-Rodríguez ◽  
Felícita Varela-Ramírez ◽  
Alvaro Acosta
Keyword(s):  
Puerto Rico ◽  
Capsicum Annuum ◽  
Total Yield ◽  
Fruit Size ◽  
Dry Season ◽  
Plant Population ◽  
Planting Density ◽  
Capsicum Annuum L ◽  
The Tropics ◽  
Crop Planting

Seven cultivars of pepper (Capsicum annuum L.), representing both frying and bell types, and open-poflinated and hybrid varieties, were planted at population levels of 35,878, 53,818, and 71,757 plants/ha. The lowest density is the conventional rate in Puerto Rico. They were planted af the Fortuna Substation, Juana Díaz, Puerto Rico. Irrigation was supplied throughout the dry season. After the fourth harvest, two replicates were pruned to 12 cm for a second crop. Planting density affected yield but not fruit size. There was a density x cultivar interaction at P = 0.09 for yield. Doubling the population increased yield 12 to 40%. Response to pruning was cultivar-specific. Total yield was 25 to 100% greater than yield before pruning. Both practices could serve as low capital innovations for the tropics.

scholarly journals Growth and Yield of Taro (Colocasia esculenta (L) Schott.) as Affected by Planting Distance

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Richard Boampong ◽  
Samuel Kwasi Boateng ◽  
Richard Adu Amoah ◽  
Bright Adu Gyamfi ◽  
Lawrence Misa Aboagye ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Block Design ◽  
Total Yield ◽  
Colocasia Esculenta ◽  
Leaf Length ◽  
Growth And Yield ◽  
Plant Spacing ◽  
Petiole Length ◽  
Yield Data ◽  
Planting Distance

Taro, Colocasia esculenta (L) Schott., is a staple food for many people in Africa. Despite the numerous importance of the crop, it still remains an underutilized crop in Ghana with little information on many aspects of the crop, especially agronomic practices. This experiment was conducted to identify the effect of planting distance on growth and yield of two promising taro accessions. The experiment was laid out using the split-plot design arranged in Randomized Complete Block Design (RCBD) with three replications in which accessions (BL/SM/80 and BL/SM/16) were used as main plots and three planting distances (1 m × 1 m, 1 m × 0.75 m, and 1 m × 0.5 m) as subplots. Data were recorded on the 4th, 8th, 12th, 16th, 20th, 24th, and 28th week after planting (WAP) for growth parameters while yield data were taken at harvest. The results indicated that plant height (63.4 cm), petiole length (44.0 cm), number of leaves (4.7), leaf length (31.7 cm), and width (20.5 cm) were significantly ( P ≤ 0.05 ) higher in closely spaced plants than widely spaced plants at 4 WAP and 8 WAP for petiole length (70.3 cm) and in the 28th WAP where there was an accession effect on leaf length and number of suckers/plant. The highest corm yield/plant (0.63 kg) and total corm yield/ha (11.7 t/ha) in both accessions were achieved by the medium plant spacing (1 m × 0.75 m) and lower plant spacing (1 m × 0.5 m), respectively. Accession BS/SM/80 recorded the highest total yield/ha of 13.0 t/ha for 1 m × 0.5 m plant spacing. The higher number of suckers (8.1) was recorded by higher spaced plants. From the study, it was seen that growth parameters correlated significantly and positively with yield. It is therefore recommended that farmers in the area and those in similar production areas use a spacing of 1 m × 0.5 m for optimum growth and yield.

scholarly journals Effect of high density planting on the vigour and yield of Theobroma cacao L. in the Southwest of Nigeria

2020 ◽  
Vol 8 (1) ◽  
pp. 217-223
Author(s):  
Ayegboyin Kayode Olufemi ◽  
Famaye Amos Olatunde ◽  
Adeosun Seun Adewale ◽  
Idrisu Mohammed ◽  
Ugioro Osasogie ◽  
...  
Keyword(s):  
Block Design ◽  
Total Yield ◽  
Planting Density ◽  
Plant Spacing ◽  
Cocoa Beans ◽  
Southwestern Part ◽  
Randomized Block Design ◽  
Cocoa Farmers ◽  
Theobroma Cacao L ◽  
Number Of Branches

Cocoa was established at Owena in the Southwestern part of Nigeria using four planting distances of 3.0 x 3.0 m, 2.5 x 2.5 m, 2.0 x 2.0 m and 1.5 x 1.5 m which was laid out in a Complete Randomized Block Design with four replicates. Data was collected between August 2014 and May 2017 on the survival count, morphological parameters (plant height, stem circumference and number of branches), number of cocoa pods and dry cocoa beans weight to determine the vigour and yield performance of cocoa plants. The results revealed significant differences (p=0.05) between treatments based on the plant spacing. While cocoa plants on 3.0 x 3.0 m treatment had significantly higher height, stem circumference and number of branches than those on 2.0 x 2.0 m and 1.5 x 1.5 m from 12 months after transplanting. The number of cocoa pods and weight of dry cocoa beans for individual cocoa trees followed the same trend with their vigour performance. However, the total yield per hectare showed significantly higher value (p=0.05) for cocoa under close spacing than the recommended traditional 3.0 x 3.0 m with low population density planting. With the present results, we recommend that cocoa farmers in Nigeria should explore a high planting density system during the first few years of establishment while the trees surpluses should be eliminated once the plants’ canopy spread are becoming too interwoven.

scholarly journals Nursery Selection for High Early Fruit Yield in Subtropical Strawberries

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 548E-549
Author(s):  
P.J.S. Lopez ◽  
C.K. Chandler
Keyword(s):  
Total Yield ◽  
Fruit Production ◽  
Fruit Yield ◽  
Plant Production ◽  
First Year ◽  
Early Season ◽  
Factorial Mating ◽  
Selection For ◽  
Factorial Mating Design ◽  
Strawberry Cultivars

Development of new strawberry cultivars for winter fruit production in Florida entails growing of hybrid seedlings in a nursery in the summer of the first year for runner plant production. Two runner plants are taken from each seedling and planted in the fruiting field in the fall. An experiment was conducted to see if it is possible to predict which genotypes in the nursery will have the highest early season fruit yield. Seedlings from 24 families from a 6 × 4 factorial mating design were grown in a nursery. From each family, daughter plants of 20 seedlings with the highest vigor and 20 randomly picked seedlings were then evaluated in the fruiting field. Plants from selected (high-vigor) seedlings were more vigorous, but had fewer crowns and runners, than unselected plants. More inflorescences were counted in selected plants than in unselected plants during the second week of January. This could account for higher early yield (yield at the end of January) and total yield (yield at the end of March) in selected than in unselected plants.

Hydrophobic Particle Films Improve Tree Fruit Productivity

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 548a-548 ◽  
Author(s):  
D.M. Glenn ◽  
G. Puterka ◽  
T. Baugher ◽  
T. Unruh ◽  
S. Drake
Keyword(s):  
West Virginia ◽  
Production Systems ◽  
Fruit Size ◽  
The United States ◽  
Fruit Production ◽  
Red Color ◽  
Tree Fruit ◽  
Fruit Productivity ◽  
Leaf Level ◽  
Hydrophobic Particle

Hydrophobic particle film technology (HPF) is a developing pest control system for tree fruit production systems. Studies were established in Chile, and Washington, Pennsylvania, and West Virginia in the United States, to evaluate the effect of HPF technology on tree fruit yield and quality. Studies in Chile, Washington, and West Virginia demonstrated increased photosynthetic rate at the leaf level. Yield was increased in peaches (Chile) and apples (West Virginia), and fruit size was increased in apples (Washington and Pennsylvania). Increased red color in apple was demonstrated at all sites with reduced russetting and `Stayman' cracking in Pennsylvania. HPF technology appears to be an effective tool in reducing water and heat stress in tree fruit resulting in increased fruit quality.

Sign in / Sign up

Export Citation Format

Share Document