YIELD AND QUALITY OF TRIPLOID WATERMELON HYBRIDS.

Evaluations of 30 triploid (seedless) watermelon hybrids were conducted in the Spring 1989 season at Bradenton and Leesburg, Florida. There was considerable variation in relative cultivar yields at the two locations. However, consistency in some cultivars did occur. 'HMX 7924' produced the highest total yield and 'CFREC 88-2' had high total yields at both locations. On the other hand, 'ACX 882322', 'Fengshan No. 1', 'FMX 28', 'Fummy', 'Honeyheart', 'Nova', and 'NVH 4295' produced low total yields at both locations. Average fruit weight was high for 'Ssuper Sweet Brand 5244', 'CFREC 88-4', and 'HMX 7924' whereas 'ACX 882322', 'FMX 28', 'Fengshan No. 1', 'Nova', and 'PSR 49087' produced low average fruit weight. Soluble solids exceeded 11% in all entries at Bradenton whereas two entries were lower than 10% at Leesburg. Several experimental lines out performed the named cultivars suggesting that future introductions will be superior to those already available.

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Effect of some growth regulators on yield and quality of sweetmelon and muskmelon

The Journal of Agricultural Science ◽

10.1017/s0021859600054459 ◽

1982 ◽

Vol 98 (3) ◽

pp. 645-649 ◽

Cited By ~ 2

Author(s):

E. El-Kholy ◽

H. Hafez ◽

F. Naeem

Keyword(s):

Growth Regulators ◽

Indole Acetic Acid ◽

Total Yield ◽

Fruit Weight ◽

Soluble Solids ◽

Ascorbic Acid Concentration ◽

Yield And Quality ◽

Yield Quality ◽

Better Than

SUMMARYThis study was carried out at Elminia University farm in two years (1978 and 1980) to evaluate the effect of some growth regulators on the production of sweetmelon and muskmelon. It was found that plants treated with some growth regulators were earlier and yielded better than untreated ones, except that in the first trial (1978), the total yield of plants treated with indole acetic acid (IAA) was less than that of the control. The highest early and total yields of both sweetmelon and muskmelon resulted from spraying ethrel on the foliage. Fruit weight and length and flesh thickness were increased by some growth substances compared with the control for both crops. Also, percentage of total soluble solids and ascorbic acid concentration increased markedly as a result of growth-regulator treatments for sweetmelon and muskmelon. Generally, two sprays of ethrel solution produced the most consistent effects on yield and yield quality in the two trials with both sweetmelon and muskmelon.

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Foliar Urea with N-(n-butyl) Thiophosphoric Triamide for Sustainable Yield and Quality of Pineapple in a Controlled Environment

Sustainability ◽

10.3390/su13126880 ◽

2021 ◽

Vol 13 (12) ◽

pp. 6880

Author(s):

Mohammad Amdadul Haque ◽

Siti Zaharah Sakimin ◽

Phebe Ding ◽

Noraini Md. Jaafar ◽

Mohd Khanif Yusop ◽

...

Keyword(s):

Nitrogen Loss ◽

Growth Yield ◽

Fruit Weight ◽

Soluble Solids ◽

Urea Solution ◽

Urease Inhibitor ◽

N Losses ◽

N Accumulation ◽

Yield And Quality

In agricultural production, nitrogen loss leads to economic loss and is a high environmental risk affecting plant growth, yield, and quality. Use of the N fertilizer with a urease inhibitor is thus necessary to minimize N losses and increase the efficiency of N. This study aimed to evaluate the effects of N-(n-butyl) Thiophosphoric Triamide (NBPT) on the growth, yield, and quality of pineapple. The experiment involved two foliar fertilizer treatments: 1% (w/v) urea solution with NBPT (2.25 mL kg−1 urea) was treated as NLU (NBPT Liquid Urea), and the same concentration of urea without NBPT served as the control. Both were applied 12 times, starting 1 month after planting (MAP) and continuing once a month for 12 months. The application of urea with NBPT notably increased the above-ground dry biomass per plant (20% and 10% at 8 and 12 MAP, respectively), leaf area per plant (23% and 15% at 8 and 12 MAP, respectively), N accumulation per plant (10%), PFPN (Partial Factor Productivity) (13%), and average fruit weight (15%) compared to the treatment with urea alone (control). The analysis of quality parameters indicated that urea with NBPT improves TSS (Total Soluble Solids) (19%), ascorbic acid (10%), and sucrose (14%) but reduces the total organic acid content (21%) in pineapple. When using urea with a urease inhibitor (NBPT), there was a significant improvement in growth, yield, quality, and nitrogen use efficiency, with the additional benefit of reduced nitrogen losses, in combination with easy handling. Hence, urea with a urease inhibitor can be used as a viable alternative for increasing pineapple yield by boosting growth with better fruit quality.

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Yield and quality of strawberry cultivars

Horticultura Brasileira ◽

10.1590/s0102-05362010000200015 ◽

2010 ◽

Vol 28 (2) ◽

pp. 222-226 ◽

Cited By ~ 24

Author(s):

Luis Eduardo C Antunes ◽

Nara Cristina Ristow ◽

Ana Cristina R Krolow ◽

Sílvia Carpenedo ◽

Carlos Reisser Júnior

Keyword(s):

Statistical Design ◽

Rio Grande ◽

Titratable Acidity ◽

Fruit Weight ◽

Climatic Conditions ◽

Soluble Solids ◽

Experimental Unit ◽

Rio Grande Do Sul ◽

Yield And Quality

The strawberry cultivation is an important economic activity in the Rio Grande do Sul State, Brazil, however the number of offered cultivars to the growers is reduced. The yield and quality of strawberry (Fragaria x ananassa Duch.) cultivars Camarosa, Galexia, Earlibrite, Festival, Plarionfre and Sabrosa was evaluated under the climatic conditions of Pelotas, Rio Grande do Sul State. We determined the number, mass, total soluble solids (TSS ºBrix), total titratable acidity (TTA), antocianin level and fresh fruits produced in an experimental unit. We also determined the production of fruits per hectare and per plant. The statistical design used in the experiment was of completely randomized blocks with 6 treatments (cultivars) and 4 replicates where the experimental unit was composed of 8 plants. The harvest began in the first half of August, extending to the second half of December, totalling 20 weeks. Plarionfre, Earlibrite and Festival cultivars showed higher production from the first half of October until the end of the first half of November. Camarosa reached higher productivity, mass of plants and fruit weight. There were no differences between the evaluated cultivars in the levels of TSS, antocianin, ATT and pH during the period of evaluation.

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EVALUATION OF PROPAGATING STOCK AND PRACTICES FOR ANNUAL RHUBARB PRODUCTION

HortScience ◽

10.21273/hortsci.25.9.1119f ◽

1990 ◽

Vol 25 (9) ◽

pp. 1119f-1119

Author(s):

D.N. Maynard

Keyword(s):

The Other ◽

Annual Production ◽

Average Yield ◽

Yield And Quality ◽

Other Hand ◽

Selection Of

Yield and quality of seed- and vegetatively-propagated rhubarb [Rheum rhabarbarum L.) for annual production were evaluated for 4 seasons. Field planting of transplants or crown divisions in late October or early November resulted in harvests beginning in early to late January and continuing until late April. Selection of `Victoria' seedlings based on petiole color was not effective in increasing the proportion of red mature petioles. Yields from seed-propagated annual `Victoria' rhubarb were always higher than yields from `McDonald' single-bud crown divisions and higher than yields from `McDonald' crown-divisions in one of two years. The four-year average yield for `Victoria' seed-propagated rhubarb was 20.4 Mg·ha-1 whereas `McDonald' crown-division-propagated rhubarb had a two-year average yield of 15.8 Mg·ha-1. On the other hand, petiole color of vegetatively-propagated rhubarb was always superior to that of seed-propagated rhubarb. GA applications increased early yield from `McDonald' single-bud divisions, but reduced early and total harvest petiole weight.

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Weather Affects Seedless Watermelon Yield, But Not Fruit Size or Quality

HortScience ◽

10.21273/hortsci.39.4.748e ◽

2004 ◽

Vol 39 (4) ◽

pp. 748E-748 ◽

Cited By ~ 1

Author(s):

Timothy E. Elkner* ◽

David H. Johnson

Keyword(s):

Fruit Quality ◽

Total Yield ◽

Fruit Size ◽

Fruit Weight ◽

Soluble Solids ◽

Fruit Number ◽

Seedless Watermelon

Medium-sized triploid watermelons were evaluated in southeast Pennsylvania in 2002 and 2003 to determine the best adapted cultivars for this region. The 2002 season was unusually hot and dry, while 2003 was unusually cool and wet. Yields and fruit quality were compared for the eight cultivars that were grown both seasons to determine the effect of weather on seedless watermelon. Cooler temperatures reduced total fruit number and total yield but not average fruit weight or soluble solids. Researchers evaluating triploid watermelons over several seasons can compare size and °Brix among cultivars, but will need to be cautious when predicting total yields.

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2005 PERSONAL SIZE “MINI” TRIPLOID WATERMELON VARIETY TRIAL

HortScience ◽

10.21273/hortsci.41.3.510a ◽

2006 ◽

Vol 41 (3) ◽

pp. 510A-510

Author(s):

Thomas Horgan ◽

Richard Snyder ◽

Peter Hudson ◽

Edgar Vinson ◽

Joseph Kemble

Keyword(s):

Total Yield ◽

Fruit Weight ◽

Soluble Solids ◽

Plant Spacing ◽

Plastic Mulch ◽

Variety Trial ◽

Solids Concentration ◽

Black Plastic ◽

Triploid Watermelon ◽

Soluble Solids Concentration

Ten “mini” or personal size seedless watermelons were evaluated at three locations: north and central Mississippi and in central Alabama. `Betsy', `Bobbie', `Demi-Sweet', `Extazy', `Mini Yellow', `Petite Treat', `Solitaire', `Valdoria', `Vanessa', and `Wonder' were the cultivars trialed. Seedlings were started, in a greenhouse, four weeks before planting. All locations used drip irrigation and black plastic mulch and were fertilized according to soil testing lab recommendations. A personal size diploid (seeded) variety, `Jenny', was used as the pollinator. One pollinator was planted, and interspaced evenly, for every three triploid plants. Four harvests were made at each location on 7-day intervals. Yields reported are based on 2,074 triploid plants per acre and 1,037 pollinizer plants per acre. Only the triploid yield reported. Plant spacing was 14 ft2 per plant. For total yield (lb/acre) the cultivars `Petite Treat' (27,210), `Valdoria' (25,700), and `Demi-Sweet' (26,400) were among the top producers at each location. `Mini Yellow' was a top producer at all locations averaging 22,480 lb/acre. For total yield (fruit/acre) the cultivars `Valdoria' (3,380), `Petite Treat' (3,470), `Bobbie' (3,470), `Betsy' (3,380), and `Vanessa' (2,740), were among the top producers at each location. For total yield (lb/fruit) `Betsy' (6.9), `Wonder' (6.7), and `Vanessa' (6.1) had the overall lowest individual fruit weights. `Demi-Sweet' had the highest individual fruit weight in central Alabama (10.0) and north Mississippi (8.8). One problem observed was that a number of melons among cultivars were above or below size class. Also determining melon ripeness was a challenge. Melon quality was good. The soluble solids concentration (sweetness) of all melons was excellent. `Demi-Sweet' had the highest incidence of hollowheart. `Wonder' and `Extazy' had no incidences of hollowheart at any location. Rind thickness had no significant differences, however in both locations measured `Mini Yellow' had the thinnest rind. Rind necrosis was not encountered.

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GRAFTING FOR THE RECOVERY OF YELLOW PASSION FRUIT STEM IN ORGANIC SYSTEM

Revista Brasileira de Fruticultura ◽

10.1590/0100-29452017745 ◽

2017 ◽

Vol 39 (1) ◽

Author(s):

MARIA IZABEL FREITAS LINS REZENDE ◽

SEBASTIÃO ELVIRO ARAÚJO NETO ◽

CAMILA LUSTOSA ◽

OSCAR MARIANO HAFLE ◽

GEAZI PENHA PINTO

Keyword(s):

Block Design ◽

Titratable Acidity ◽

Fruit Weight ◽

Stem Diameter ◽

Soluble Solids ◽

Organic System ◽

Yield And Quality ◽

Bridge Type ◽

Steel Drill

ABSTRACT The aim of the present study was to evaluate the effect of stem repair grafting on the recovery of damaged plants, yield and quality of yellow passion fruits in organic system. The experiment was conducted simulating five stem damages (treatments) in randomized complete block design with four replications of four plants each. After reaching on average 7.3 ± 1.2 mm in stem diameter, plants were perforated at 20, 40, 60 and 80% of the stem diameter with the aid of a steel drill. The reduction in plant stand treatment with 80 % damage reduces plant productivity. Then, bridge-type grafting was performed by connecting the top and bottom of the injury. The grafting success percentage ranged from 81.3 to 95.8% and did not differ between treatments, but the survival rate of plants was lower in treatments with 40 and 80% of injuries. There were no statistically significant differences between treatments for the following variables: number of fruits per plant, average fruit weight, total soluble solids (TSS), total titratable acidity (TTA) and (TSS/TTA) ratio. Recovery stem grafting allows injured plants to maintain the same productivity by up to 60% compared to plants without injuries.

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Wood-based biochar for small fruit production in southern Quebec, Canada

Canadian Journal of Soil Science ◽

10.1139/cjss-2020-0152 ◽

2021 ◽

Author(s):

Xuan Shang ◽

Chih-Yu Hung ◽

Barry Husk ◽

Valerie Orsat ◽

Joann K. Whalen

Keyword(s):

Soil Quality ◽

Quality Parameters ◽

Fruit Weight ◽

Fruit Yield ◽

Soluble Solids ◽

Total Phenolic ◽

First Year ◽

Yield And Quality ◽

Small Fruit

The market for small fruits (grapes, blueberries, strawberries, and raspberries) is valued at more than CAD100 million per year in Quebec, Canada. Wood-based biochar is an amendment that improves soil quality, which may boost small fruit growth and production. The objective of this research was to determine if wood-based biochar could increase the yield and quality of grape, blueberry, strawberry, and raspberry in southern Quebec. We evaluated the fruit yield as well as the quality parameters like average fruit weight, fruit firmness, color, juice pH, total soluble solids, total phenolic content, and antioxidant activity. Field trials were established on commercial farms with grape, blueberry, strawberry, and raspberry production systems in plots that received wood-based biochar and no biochar in spring (April to May). Small fruits were harvested at their ripening stage for yield and quality evaluation in fall (July to October). Biochar application did not improve yield and quality parameters of small fruits except it gave a marginal higher yield of grape (3.7 vs. 4.4 t ha-1, P = 0.08) and a higher average fruit weight of strawberry (11.9 vs. 13.2 g, P < 0.05). There was no difference in the quality of the fruit from biochar-amended and control plots in the first year of biochar application, possibly because the quality parameters are affected more by weather conditions, handling, and storage than by soil quality. This work suggests that wood-based biochar (<5 t ha-1) has a limited first-year impact on small fruit yield and quality in southern Quebec, Canada.

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HONEY BEE CONTRIBUTION TO ‘BORDÔ’ GRAPEVINE FRUIT PRODUCTION IN SOUTHERN BRAZIL

Revista Brasileira de Fruticultura ◽

10.1590/0100-29452017155 ◽

2017 ◽

Vol 39 (3) ◽

Cited By ~ 2

Author(s):

MIRELI MARTIGNAGO ◽

RAFAEL MARTINS ◽

BIRGIT HARTER-MARQUES

Keyword(s):

Apis Mellifera ◽

Fruit Production ◽

Quality Parameters ◽

Fruit Weight ◽

Soluble Solids ◽

Yield And Quality ◽

Pollinating Insects ◽

Important Quality ◽

Commercially Important

ABSTRACT The production of fruits and seeds of many crops is increased when bees visit their flowers pollinating them. The aim of this study was to evaluate the effect of different pollination treatments on ‘Bordô’ grapevine (Vitis labrusca L.) fruit quantity and quality. Quantitative and qualitative fruit production parameters of plants visited by Apis mellifera L., manually self- and cross-pollinated plants and plants without pollination were analyzed and compared. Fruit production was high for all treatments and all fruits presented four seeds per fruit, on average, confirming that this grape cultivar is autogamous. However, fruit set after spontaneous self-pollination was statistically lower than that of all other treatments, and pollination by A. mellifera showed the highest fruit production. Furthermore, pollination by honey bees resulted in increased biomass, reflected on fruit weight, but the content of soluble solids remained unchanged. The results of this study showed that there is no need of pollinators for fruit production of ‘Bordô’ cv., but the presence of these agents, in particular Apis mellifera, influences commercially important quality parameters such as fruit yield and fresh weight. Therefore, the use of bee hives in areas with deficit of pollinating insects may promote an improvement in yield and quality of this cultivar.

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Deficit Irrigation to Enhance Fruit Quality of the ‘African Rose’ Plum under the Egyptian Semi-Arid Conditions

Agronomy ◽

10.3390/agronomy11071405 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1405

Author(s):

Islam F. Hassan ◽

Maybelle S. Gaballah ◽

Hanan M. El-Hoseiny ◽

Mohamed E. El-Sharnouby ◽

Shamel M. Alam-Eldein

Keyword(s):

Fruit Quality ◽

Deficit Irrigation ◽

Total Yield ◽

Fruit Yield ◽

Soluble Solids ◽

Limited Information ◽

Yield And Quality ◽

Arid Conditions ◽

Semi Arid

Evolved in South Africa and released to market in 2009, the ‘African Rose’ plum has been introduced and grown under the Egyptian semi-arid conditions since 2010. Within that time, this cultivar has faced significant fruit quality issues, mainly poor color and low total soluble solids (TSS). Several trials using foliarly applied growth regulators have been conducted, but with little conspicuous results on fruit yield and quality. There is very limited information about the relationship between irrigation regime and fruit quality for this cultivar. Therefore, a field experiment was conducted to study the effect of deficit irrigation on the quality of the ‘African Rose’ plum during the 2019 and 2020 seasons. Five-year-old hedge growing trees were subjected to three deficit irrigation regimes: 100% (control), 80%, and 60% of the crop evapotranspiration (ETc) after the pit hardening stage until the end of the harvest season (May to June period) were evaluated. Results indicated that deficit irrigation positively enhanced the levels of abscisic acid (ABA), total phenols, and anthocyanins with improved fruit TSS and maturity index, although fruit yield, acidity, size, and firmness were decreased. Deficit irrigation could be suggested as a sustainable novel solution to improve the fruit quality of the ‘African Rose’ plum grown under the semi-arid conditions of Egypt. Although the total yield and some quality characteristics were not improved, the early harvested fruit with enhanced color and taste could be a good start for additional research to solve other quality-related issues under such conditions.

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