YIELD RESPONSES OF STRAWBERRY TO FALL APPLICATION OF ETHEPHON

1983 ◽  
Vol 63 (4) ◽  
pp. 1093-1095 ◽  
Author(s):  
N. P. CAIN ◽  
D. P. ORMROD ◽  
W. D. EVANS
Keyword(s):  
Growing Season ◽  
Fruit Yield ◽  
Breeding Program ◽  
Fragaria Ananassa ◽  
Fruit Number ◽  
Late Fall ◽  
Yield Responses ◽  
The University ◽  
Strawberry Breeding ◽  
Fall Application

Ethephon solutions at various concentrations were sprayed on strawberry plants, Fragaria × ananassa Duch., in late fall to determine if fruit yield was affected in the subsequent growing season. Plants of the day-neutral (everbearing) cultivar Centennial sprayed with 100 ppm solution had increased fruit yield and number compared with control plants. Selection 107 M 6 from the University of Guelph strawberry breeding program produced greater fruit yields with a 1000-ppm spray but fruit number was not increased. Yield and fruit number of Redcoat and selection 31 B 38 were not affected by ethephon sprays.Key words: Strawberry, ethephon

STRAWBERRY BREEDING PROGRAM AT THE UNIVERSITY OF ANCONA

2002 ◽  
pp. 143-146
Author(s):  
B. Mezzetti ◽  
F. Capocasa ◽  
D. Lucarini ◽  
G. Murri ◽  
F. Senzacqua ◽  
...  
Keyword(s):  
Breeding Program ◽  
The University ◽  
Strawberry Breeding

scholarly journals USE OF PROGENY TESTING TO ASSESS FAMILY POTENTIAL IN THE UNIVERSITY OF FLORIDA STRAWBERRY BREEDING PROGRAM

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1069e-1069
Author(s):  
C. K. Chandler ◽  
C. M. Howard ◽  
E. E. Albregts
Keyword(s):  
Fruit Size ◽  
Breeding Program ◽  
Progeny Testing ◽  
Small Populations ◽  
University Of Florida ◽  
Visual Impression ◽  
The University ◽  
Strawberry Breeding ◽  
Replicated Measurement

Progeny testing, both formal and informal, has been a component of the University of Florida strawberry breeding program. Informally, the potential of numerous parental combinations has been assessed by growing small populations of each combination, and then ranking these populations according to visual impression. Formal progeny testing, where variables are measured on seedlings in a replicated measurement block, was used during the 1987-88 season. Several families were identified as promising, based on an analysis of yield, fruit size, firmness, and appearance data.

Evaluation of row covers for overwintering of strawberries under prairie conditions

1992 ◽  
Vol 72 (3) ◽  
pp. 871-874 ◽  
Author(s):  
J. M. Turner ◽  
K. K. Tanino ◽  
C. Stushnoff
Keyword(s):  
Weather Conditions ◽  
Commercial Production ◽  
Fruit Yield ◽  
Barley Straw ◽  
Fragaria Ananassa ◽  
Plant Survival ◽  
Straw Mulch ◽  
Row Covers ◽  
Fall Application ◽  
Strawberry Cultivars

Plant survival, bloom response and fruit yield following fall application of a plastic row cover, plastic row cover covered with barley straw, conventional straw, and no cover were compared for two strawberry cultivars, Fragaria × ananassa Duch. Bounty and Hecker. Response was highly dependent on weather conditions. Plastic row cover + barley straw provided the best protection in winters with below-normal temperatures and low snowfall, resulting in the highest yields. Plastic row cover advanced blooming dates of both cultivars by at least 6 d over conventional straw mulch. With proper protection, both the day-neutral and June-bearing cultivars tested in this study appear to be viable for commercial production in Saskatchewan.Key words: Strawberries, Fragaria × ananassa Duch., polyethylene row cover, overwintering

The effects of burning on Festuca hallii in the parklands of central Alberta

1995 ◽  
Vol 73 (6) ◽  
pp. 937-942 ◽  
Author(s):  
Heather Sinton Gerling ◽  
Arthur W. Bailey ◽  
Walter D. Willms
Keyword(s):  
Standing Crop ◽  
Growing Season ◽  
Early Spring ◽  
Leaf Length ◽  
Tiller Number ◽  
Phenological Stages ◽  
University Of Alberta ◽  
Festuca Hallii ◽  
Tiller Density ◽  
The University

The response of Festuca hallii (Vassey) Piper to time of burning was examined on the Festuca–Stipa grasslands of the Aspen Parklands at the University of Alberta Ranch located 150 km southeast of Edmonton, Alberta. Two defoliation treatments (burning and mowing) were examined on five dates in 1978 (8 April, 27 April, 1 June, 31 July, and 18 October), corresponding to different phenological stages of F. hallii. Burning and mowing reduced the standing crop of F. hallii produced in the first growing season after treatment, but tiller densities increased. Defoliation in early spring (8 April) had little effect on the standing crop; apparently the increase in tiller density compensated for the reduction in tiller length. Inflorescence density also increased following burning or mowing from 8 April to 1 June. Soil temperature (3 cm deep) on previously burned or mown sites was greater than on the control the year after treatment. Festuca hallii tolerates single burns at any time of the year, but early spring fires have the greatest benefits by increased tillering and standing crop. Key words: standing crop, tiller number, leaf length, litter, defoliation, mowing.

scholarly journals Exploring the Potential of High Resolution WorldView-3 Imagery for Estimating Yield of Mango

2018 ◽  
Vol 10 (12) ◽  
pp. 1866 ◽  
Author(s):  
Muhammad Rahman ◽  
Andrew Robson ◽  
Mila Bristow
Keyword(s):  
High Resolution ◽  
Vegetation Indices ◽  
Sampling Technique ◽  
Fruit Yield ◽  
Ann Model ◽  
Tree Crown ◽  
Crown Area ◽  
Fruit Number ◽  
Growing Seasons ◽  
Yield Parameters

Pre-harvest yield estimation of mango fruit is important for the optimization of inputs and other resources on the farm. Current industry practice of visual counting the fruit on a small number of trees for yield forecasting can be highly inaccurate due to the spatial variability, especially if the trees selected do not represent the entire crop. Therefore, this study evaluated the potential of high resolution WorldView-3 (WV3) satellite imagery to estimate yield of mango by integrating both geometric (tree crown area) and optical (spectral vegetation indices) data using artificial neural network (ANN) model. WV3 images were acquired in 2016–2017 and 2017–2018 growing seasons at the early fruit stage from three orchards in Acacia Hills region, Northern Territory, Australia. Stratified sampling technique (SST) was applied to select 18 trees from each orchard and subsequently ground truthed for yield (kg·tree−1) and fruit number per tree. For each sampled tree, spectral reflectance data and tree crown area (TCA) was extracted from WV3 imagery. The TCA was identified as the most important predictor of both fruit yield (kg·tree−1) and fruit number, followed by NDVI red-edge band when all trees from three orchards in two growing seasons were combined. The results of all sampled trees from three orchards in two growing seasons using ANN model produced a strong correlation (R2 = 0.70 and 0.68 for total fruit yield (kg·tree−1) and fruit number respectively), which suggest that the model can be obtained to predict yield on a regional level. On orchard level also the ANN model produced a high correlation when both growing seasons were combined. However, the model developed in one season could not be applied in another season due to the influence of seasonal variation and canopy condition. Using the relationship derived from the measured yield parameters against combined VIs and TCA data, the total fruit yield (t·ha−1) and fruit number were estimated for each orchard, produced 7% under estimation to less than 1% over estimation. The accuracy of the findings showed the potential of WV3 imagery to better predict the yield parameters than the current practice across the mango industry as well as to quantify lost yield as a result of delayed harvest.

scholarly journals Diallel cross among fresh market tomato inbreeding lines

2012 ◽  
Vol 30 (2) ◽  
pp. 246-251 ◽  
Author(s):  
Lívia M de Souza ◽  
Maria Elisa AGZ Paterniani ◽  
Paulo César T de Melo ◽  
Arlete MT de Melo
Keyword(s):  
Combining Ability ◽  
Yield Components ◽  
Block Design ◽  
Diallel Cross ◽  
Fruit Yield ◽  
Soluble Solids ◽  
Width Ratio ◽  
Parental Line ◽  
Fresh Market ◽  
Fruit Number

The general combining ability (GCA), specific combining ability (SCA), and heterosis were studied in a complete diallel cross among fresh market tomato breeding lines with reciprocal excluded. Fifteen genotypes (five parents and ten hybrids) were tested using a randomized complete block design, with three replications, and the experiments were conducted in Itatiba, São Paulo state, Brazil, in 2005/06. The yield components evaluated were fruit yield per plant (FP), fruit number per plant (FN), average fruit weight (FW); cluster number per plant (CN); fruit number per cluster (FC), fruit wall thickness (FT) and number of locules per fruit (NL). Fruit quality components evaluated were total soluble solids (SS); total titratable acidity (TA); SS/TA ratio, fruit length (FL); fruit width (WI); length to width ratio (FL/WI). The data for each trait was first subjected to analysis of variance. Griffing's method 2, model 1 was employed to estimate the general (GCA) and specific (SCA) combining abilities. Parental and hybrid data for each trait were used to estimate of mid-parent heterosis. For plant fruit yield, IAC-2 was the best parental line with the highest GCA followed by IAC-4 and IAC-1 lines. The hybrids IAC-1 x IAC-2, IAC-1 x IAC-4 and IAC-2 x IAC-4 showed the highest effects of SCA. High heterotic responses were found for fruit yield and plant fruit number with values up to 49.72% and 47.19%, respectively. The best hybrids for fruit yield and plant fruit number were IAC-1 x IAC-2, IAC-1 x IAC-4 and IAC-2 x IAC-5, for fruit yield and plant fruit number, the main yield components.

scholarly journals Lisianthus 'UF Savanna' -- Eight Colors of Heat-Tolerant Single-Flowering Cultivars Released by the University of Florida's Lisianthus Breeding Program.

EDIS ◽  
2007 ◽  
Vol 2007 (16) ◽  
Author(s):  
Brent K. Harbaugh ◽  
Zhanao Deng
Keyword(s):  
Breeding Program ◽  
Fact Sheet ◽  
Potted Plants ◽  
Heat Tolerant ◽  
The University ◽  
Flower Display

ENH-1066, a 5-page fact sheet by Brent K. Harbaugh and Zhanao Deng, reports the release of these cultivars appropriate for flowering potted plants, with intermediate height and a spray-type flower display. Published by the UF Department of Environmental Horticulture, February 2007.

scholarly journals Fruit yield of european cranberry (Oxycoccus palustris Pers.) in different plant communities of peatlands (northern Wielkopolska, Poland)

2012 ◽  
Vol 62 (1) ◽  
pp. 97-105 ◽  
Author(s):  
Artur Adamczak ◽  
Maciej Gąbka ◽  
Waldemar Buchwald
Keyword(s):  
Plant Community ◽  
Plant Communities ◽  
Leaf Size ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Habitat Conditions ◽  
Fruit Number ◽  
Oxycoccus Palustris

The aim of this study was to determine fruit yield of <i>Oxycoccus palustris</i> under the climatic and habitat conditions of northern Wielkopolska (the Greater Poland region), depending on the type of occupied plant community. Total fruit number and fruit weight as well as average cranberry leaf size were determined on 33 plots with an area of 1 m<sup>2</sup>, located on 7 peatlands. On the study areas, European cranberry produced crops from 9.2 up to 242.0 g &#56256;&#56457;&#56256;&#56323; m<sup>-2</sup>, which gives 92-2420 kg &#56256;&#56457;&#56256;&#56323;ha<sup>-1</sup>. It has been demonstrated that on the peatlands of northern Wielkopolska <i>O. palustris</i> reaches its generative and vegetative optimum in the communities of the class <i>Scheuchzerio- Caricetea fuscae</i>, in particular in the community <i>Sphagno recurvi-Eriophoretum angustifolii</i>.

scholarly journals Fruit production and quality of mini-watermelon with different number of stems, in troughs cultivation system and substrate reuse

2021 ◽  
Vol 42 (2) ◽  
pp. 471-486
Author(s):  
Josiéle Garcia Dutra ◽  
◽  
Roberta Marins Nogueira Peil ◽  
Tatiana da Silva Duarte ◽  
Cesar Valmor Rombaldi ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Positive Impact ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Soluble Solids ◽  
Plant Management ◽  
Cultivation System ◽  
Fruit Number ◽  
Yield And Quality ◽  
The One

Substrate-filled pots are growing systems commonly used for vegetable farming. However, few are the studies available relating them to mini-watermelon cultivation. Our study presents a growing system using substrate-filled troughs and leachate recirculation as a low-cost and less environmentally harmful soilless cultivation system for mini-watermelons. For a growing system to be viable and provide high fruit yield and quality, several aspects must be studied, including substrate physical properties and reuse potential in successive crops, besides plant management-related aspects. Therefore, our goal was to evaluate the effects of a trough system and substrate reuse on changes in the properties of raw rice husk and on fruit yield and quality for mini-watermelons at different stem training. To this purpose, two trials were conducted using nutrient solution recirculation systems. In the first, we evaluated the effects of pot and trough systems. In the second, first- and second-use substrates were compared in the trough system. In both trials, one and two-stem training systems were analyzed. The results of the first trial show that the trough system had a greater positive impact on substrate water holding capacity (WHC), which increased from 7.9 to 15.6%, while the pots increased substrate WHC only to 11.2%. However, both systems neither affected fruit yield (8 kg/m² on average) nor fruit quality. The two-stem training promoted higher fruit yields (4.2 kg/plant) and contents of total soluble solids - TSS (11.4 °Brix) but did not affect average fruit weight. Moreover, the one-stem training provided higher fruit number (7.3 fruits/m²) and fruit yield (9.7 kg/m²). In the second trial, the reused substrate showed a higher WHC (12.4%) than the one used for the first time (9.9%). The reused substrate also provided better results in terms of fruit yield and quality (5.9 fruits/m², 5.3 kg/m², and 10.5o Brix). In the second trial, two-stem training also increased average fruit weight, and hence yields per plant. Nevertheless, the stem number did not affect fruit number per plant, fruit yield per square meter, and fruit quality.

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