Increasing doses of potassium increases yield and quality of muskmelon fruits under greenhouse

ABSTRACT Potassium (K) influences the variables that determine quality of fruit and the concentration of phytonutrients to human health and therefore consumer preferences. The objective of this study was to evaluate the effect of different concentrations of K in the nutrient solution (5, 7, 9 and 11 mM of K) on yield and quality of Cantaloupe fruits under greenhouse conditions. The experiment was conducted in pots using a completely randomized design with 15 replications. Analysis of variance, correlation, regression and multiple comparisons among means (Tukey p<0.05) were performed. Results showed higher values of yield, average fruit weight, equatorial diameter, pulp thickness, fruit firmness, soluble solids content, phenolic content and antioxidant capacity of fruits at the concentrations of 9 and 11 mM of K. All variables, except equatorial diameter, increased their values as K concentrations increased, showing a lineal, positive and significant trend, which evidences that the optimal dose of K in muskmelon is higher than 11 mM, being suggested for future research, to evaluate concentrations above this value.

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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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Phosphorus (P) improves industrial tomato quality and yield in soil with high phosphorus content

Australian Journal of Crop Science ◽

10.21475/ajcs.20.14.08.p2629 ◽

2020 ◽

pp. 1335-1341

Author(s):

Arthur Bernardes Cecílio Filho ◽

Bruno Trevizaneli ◽

Sergio Manuel Rugeles Reyes

Keyword(s):

Soluble Solids ◽

Tomato Crop ◽

Nutrient Contents ◽

Soil P ◽

Yield And Quality ◽

P Content ◽

Tomato Processing ◽

Commercial Yield ◽

Solids Content

Soils under intensive and successive cropping with central pivot irrigation tend to present high nutrient contents, especially phosphorus (P), which is a nutrient with a great impact on the yield and quality of agricultural products. Among the rotating crops, the application of high P rates is common in processing tomato, although not supported by research. This work evaluates the effect of phosphate fertilization (0, 200, 400, 600, 800, and 1000 kg ha-1 P2O5) on the yield and quality of industrial tomato ‘Heinz 9553’ grown in a soil with high available P content (145 mg dm-3) resulting of an intensive vegetables cultivation, which have high demand by P. The highest total (127.4 t ha-1) and commercial (108.6 t ha-1) yields were obtained with 413.9 and 384 kg ha-1 P2O5, respectively. The results showed that pH of tomato juice, the percentages of green, red, and commercial fruits were not influenced by the applied P rates. However, nutrient delivery increased the soluble solids content up to 356 kg ha-1 P2O5, which is interesting for tomato processing. After harvesting the fruits, the available soil P content was increased with P supply to the plants. For improvement of commercial yield and soluble solids characteristics, the tomato crop shall be fertilised with P even though the soil has high P content.

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Effect of Fungicide Applications Scheduled to Control Gummy Stem Blight on Yield and Quality of Watermelon Fruit

Plant Disease ◽

10.1094/pdis.2001.85.1.53 ◽

2001 ◽

Vol 85 (1) ◽

pp. 53-58 ◽

Cited By ~ 15

Author(s):

Anthony P. Keinath

Keyword(s):

Disease Severity ◽

Fruit Weight ◽

Fruit Rot ◽

Soluble Solids ◽

Black Rot ◽

Soluble Solids Content ◽

Stem Blight ◽

Gummy Stem Blight ◽

Yield And Quality ◽

Solids Content

Yield and quality reductions in watermelon infected with Didymella bryoniae may be attributed to reduced number or weight of fruit, sunburned fruit, fruit rot, or low sugar content due to gummy stem blight on foliage and black rot on fruit. Number, weight, soluble solids content, and external appearance of fruit were determined in four experiments conducted in fall 1996 and 1997 and spring 1997 and 1998. Severity of gummy stem blight was varied by applying no fungicide, mancozeb, or chlorothalonil according to different schedules. In the fall, when disease severity was high, total fruit weight, percent marketable fruit, and soluble solids content were lower and percent fruit with black rot was higher in nonsprayed than in sprayed treatments. Fungicide applications did not affect total fruit weight, soluble solids content, or black rot in the spring, when disease severity was moderate to low. Percent sunburned fruit was greater in treatments sprayed every 14 days than in those sprayed weekly. In fall experiments, the number of healthy, unblemished fruit increased linearly as the number of fungicide applications was increased from zero to nine per season. Yield losses in watermelon to gummy stem blight and black rot resulted primarily from a reduction in total fruit weight and an increase in number of diseased and sunburned fruit.

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Post harvest evaluation of physical-chemical parameters of mechanically damaged Tahiti acid limes

Revista Brasileira de Pesquisa em Alimentos ◽

10.14685/rebrapa.v1i2.20 ◽

2010 ◽

Vol 1 (2) ◽

pp. 79

Author(s):

Michel Shoiti Tamura ◽

Roselene Ferreira Oliveira ◽

Simone Correia Molina ◽

Edmar Clemente

Keyword(s):

Titratable Acidity ◽

Soluble Solids ◽

Chemical Parameters ◽

Post Harvest ◽

Physical Chemical ◽

Randomized Design ◽

Significant Difference ◽

Completely Randomized Design ◽

Solids Content

From harvest to consumption, fruit and vegetables suffer a series of mechanical damages which, depending on their sensitiveness, may cause damages that put their final quality at risk. This work had as its objective evaluate the post harvest quality of mechanically damaged ‘Tahity’ acid limes. The experiment was carried out in a completely randomized design, with 3 repetitions and 7 fruits per treatment, mechanical damages were then evaluated by cutting and impacting in comparison to healthy fruits (control), and maintained for periods of 0, 3. 6, 9, 12, 15 and 18 days, thus obtaining a 3 x 7 factorial experiment. Analyses were made throughout the 18 days, so as to determine the total soluble solids content (expressed in °Brix); titratable acidity (in g of citric acid. 100mL-1); ratio (relationsoluble solids and titratable acidity); vitamin C (expressed in mg of ascorbic acid 100mL-1) and pH. The results obtained showed that there was significant difference in the chemical parameters evaluated, mainly those submitted to damaging treatment. DOI: http://dx.doi.org/10.14685/rebrapa.v1i2.20

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YIELD AND QUALITY OF TRIPLOID WATERMELON HYBRIDS.

HortScience ◽

10.21273/hortsci.25.8.859f ◽

1990 ◽

Vol 25 (8) ◽

pp. 859f-859

Author(s):

Donald N. Maynard ◽

Gary W. Elmstrom

Keyword(s):

Total Yield ◽

Fruit Weight ◽

The Other ◽

Soluble Solids ◽

Yield And Quality ◽

Other Hand ◽

Seedless Watermelon ◽

Triploid Watermelon

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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The Influence of Climate on Fruit Development and Quality of Four Low-chill Peach Cultivars

HortScience ◽

10.21273/hortsci.44.3.666 ◽

2009 ◽

Vol 44 (3) ◽

pp. 666-670 ◽

Cited By ~ 9

Author(s):

Todd W. Wert ◽

Jeffrey G. Williamson ◽

Jose X. Chaparro ◽

E. Paul Miller ◽

Robert E. Rouse

Keyword(s):

Fruit Development ◽

Titratable Acidity ◽

Fruit Weight ◽

Soluble Solids ◽

Soluble Solids Content ◽

North Central ◽

Southwest Florida ◽

The North ◽

Solids Content

The effect of climate was observed on fruit quality of four low-chill peach cultivars (Flordaprince, Flordaglo, UFGold, and TropicBeauty). The cultivars were evaluated in three locations (north–central, central, and southwest Florida). Soluble solids content (SSC), titratable acidity (TA), SSC:TA ratio, fruit weight, blush, and fruit development period (FDP) were determined. Longer FDPs were observed at the north–central location than at the southwest location. Fruit development and the expression of quality attributes were affected by location during fruit growth with higher color and SSC and shorter FDP occurring under warmer conditions. Within locations, ‘UFGold’ had the shortest FDP except at the southwest location where its chilling requirement may not have been met. At the central and southwest locations, ‘UFGold’ also tended to have lower TA values and higher SSC;TA ratios than the other cultivars.

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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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Influence Of Soil Type On Yield And Quality Of Different Apple Cultivars

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Horticulture ◽

10.15835/buasvmcn-hort:12638 ◽

2017 ◽

Vol 74 (1) ◽

pp. 21

Author(s):

Alina Viorica ILIE ◽

Cristina PETRISOR ◽

Dorel HOZA ◽

Viorel OLTENESCU

Keyword(s):

Ascorbic Acid ◽

Fruit Quality ◽

Soil Type ◽

Dry Matter ◽

Soluble Solids ◽

Soluble Solids Content ◽

Yield And Quality ◽

Apple Cultivars ◽

Solids Content

The objective of this study was to determine influence of different soil type on apple yield and quality. To investigate the variation in fruit quality, apples were harvested at commercial maturity on two different soil type. The investigations was conducted in experimental apple orchards located in Focsani region on two different soil type: luvic brown typical and luvic brown pseudogleizate. Fruits of Jonathan and Golden Delicios cultivars were tested for color, soluble solids content, total acidity, ascorbic acid, anthocyanins content and chlorophyls content with specific analytrical methods. At harvest yield, dry matter, soluble solids content, ascorbic acid and acidity were affected by soil type. In this study, no significant soil effect was found on color, anthocyanins and chlorophyll fruit content. The results obtained in this study suggest that luvic brown pseudogleizate soil leading to increased yields and enhanced fruit quality.

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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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