scholarly journals Spacing, Nitrogen and Potassium on Yield and Quality of Cabezona Pineapple

1969 ◽  
Vol 67 (1) ◽  
pp. 1-10
Author(s):  
Carmen T. Ramírez ◽  
Enrique González Tejera
Keyword(s):  
Puerto Rico ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Fresh Market ◽  
Mean Values ◽  
Yield And Quality ◽  
The Mean ◽  
X 132

This study evaluates the effects of spacing, and of N and K2O on Cabezona pineapple, a big fruit planted solely for the fresh market and grown in an Inceptisol at Lajas, Puerto Rico. Treatment differentials consisted of 3 spacings (30.5, 46 and 61 cm) between plants within the row, 61 cm between rows and 132 em between double rows. Significant fruit yield increases occurred with treatment differentials. Up to 88.4 t/ha were obtained from plants spaced 30.5 cm and receiving 224 and 252 kg/ha of N and K2O, respectively. Fruit weight increased as spacing increased. The mean values were 2.9, 3.4 and 3.9 kg for the 30.5, 46 and 61 cm spacings, respectively. The greater number (19,442 fruits/ha) of the largest marketable fresh fruits (about 3.6 kg each) were obtained from plots spaced 46 x 61 x 132 cm, with 336 kg N and 168 kg K2O/ha. Close planting significantly reduced the number of slips per plant, values ranging from 2.7 to 8.7.

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

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.

scholarly journals Effects of Combination Between Nitrogen and Potassium Fertilization on Yield and Quality of Valencia Orange Fruits

2019 ◽  
Vol 12 (1) ◽  
pp. 38
Author(s):  
Hien Huu Nguyen ◽  
Toan Nguyen Tai
Keyword(s):  
Fruit Juice ◽  
N Fertilization ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Yield And Quality ◽  
Valencia Orange ◽  
K Fertilization ◽  
Juice Content ◽  
Fruit Diameter

Nitrogen (N) and potassium (K) are the most important nutrients for fruit yield and quality of citrus. Farmers - growing orange is usually applied high rates of N and K fertilizers. The study was carried out during 2017 and 2018 production year on a 4-year Valencia orange. The objective of the present paper was to evaluate the effect of combination between nitrogen and potassium on fruit yield and quality of Valencia orange. The experiment was used three doses of N (0.5, 1.0, and 1.5 kg/tree) in form of urea and three doses of K (0.6, 0.9, and 1.2 kg/tree) in form of potassium chloride in all combinations. The obtained results showed that N and K concentrations in soil did not increase with increment of N and K fertilization. Increment of N and K fertilization increased N content but did not increase K content in leaves. Fruit weight, fruit diameter and peel thickness increased with increasing of N fertilization. Maximum fruit yield of Valencia orange was attained with rates of 0.5 kg N/tree combined with 0.9 kg K/tree. Juice content increased with increasing amount of N fertilization. Increment of K fertilization tend to increase total acidity in fruit juice. The highest TSS and TSS/TA were attained with rates of 0.5 kg N/tree combined with 0.9 kg K/tree.

scholarly journals Effect of Foliar Boron on Fruit Yield and Quality of Citrus sinensis cv. Hamlin

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 671d-671 ◽  
Author(s):  
Mohammad R. Karim ◽  
Glenn C. Wright ◽  
Kathryn C. Taylor
Keyword(s):  
Citrus Sinensis ◽  
Pollen Viability ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Soluble Solid Content ◽  
Fruit Number ◽  
Yield And Quality

A field trial conducted at Yuma, Ariz., examined the effect of foliar boron application on fruit yield and quality of Citrus sinensis cv. Hamlin. Boron was applied to 5-year-old trees at five treatment levels (0, 500, 1000, 2000, and 3000 ppm) before or after flowering in a split plot design. At harvest, fruit number, size and quality were determined. Yield (P = 0.01) and average fruit number per tree (P = 0.02) were different among treatments. The highest yield was obtained with the 500 ppm treatment. In this first year of the trial there was no difference in average fruit weight, fruit pH, titratable acidity, peel thickness, juice volume, or soluble solid content of fruit between the treatments. Previous studies indicate that boron influenced in vivo and in vitro pollen germination in many crops. Increased fruit yield may have occurred because boron was transported to the flowers where it exerted its influence on increased fruit set through an effect on pollen viability or pollen tube growth. Further investigation of this hypothesis is underway.

scholarly journals The Effects of Nitrogen and Phosphorus Fertilizer Rates on Yield and Quality of Tomato (Solanum lycopersicum L.) in Hawzen, Ethiopia

2020 ◽  
Author(s):  
Hilay Gebremedhin ◽  
Mehari Gebremicheal ◽  
Gebregwergis Fitsum
Keyword(s):  
Solanum Lycopersicum ◽  
Soil Analysis ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Index Number ◽  
Area Index ◽  
Solanum Lycopersicum L ◽  
Yield And Quality ◽  
Main Effects

Abstract Background More than 50% of the soil in Tigray is deficient in macro essential nutrients. Hence, poor soil chemical fertility is a major challenges for low production of crops like tomato in Hawzen. The aim of this work was to study the effects of N and P rates on the yield and quality of tomato (Solanum lycopersicum L.) in Hawzen, Tigray, Ethiopia. Methods Four different rates of N (0, 69, 138 and 207 kg Nha− 1) and P (0, 46, 69 & 92 kg Pha− 1) were laid out in a randomized complete block design with three replications. Soil analysis were done before executing of the experiment. Data were collected on yield, and fruit quality of tomato. Results The results revealed that plant height, leaf area index, number of primary branches per plant, number of clusters per plant, number of flower clusters, number of fruit per clusters and fruit set were significantly influenced by the main effects of N and P rates. The interaction of N and P rates only had significant effects on marketable, total fruit yield, mean fruit weight, and fruit length. Compared to control, application of 138 kg Nha− 1 and 69 kg Pha− 1 increased mean fruit weight, marketable fruit weight and total fruit yield by 35.9%, 70.5% and 68.4%, respectively. Likewise, the main effects of N and P rates were remarkable on total soluble solids, total sugar, titratable acidity, ascorbic acid, lycopene content, and protein. A significant influence on the P content of tomato was detected due to varied rates of P. fruit N concentration was significantly influenced by rates of N only. Conclusion Application of N and P at rates of 138 and 69 kgha− 1, respectively, showed the highest values in most yield and quality measurements and particularly increased yield by 70.5% as compared to the nil fertilizer application. Therefore, 138 kg Nha− 1 and 69 kg Pha− 1 can be used by producers for better yield and quality of tomato in the area.

Fruit yield and quality of Dhakki date as affected by fresh and stored pollens of potential male genotypes

2019 ◽  
Vol 51 (5) ◽  
Author(s):  
Muhammad Iqbal ◽  
Khalid Usman ◽  
Shakeel Ahmad Jatoi ◽  
Muhammad Munir
Keyword(s):  
Fruit Yield ◽  
Yield And Quality

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

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.

scholarly journals The Quality of Statistical Reporting and Data Presentation in Predatory Dental Journals Was Lower Than in Non-Predatory Journals

Entropy ◽  
2021 ◽  
Vol 23 (4) ◽  
pp. 468
Author(s):  
Pentti Nieminen ◽  
Sergio E. Uribe
Keyword(s):  
Open Access ◽  
Peer Review ◽  
Scientific Journals ◽  
Mean Values ◽  
Data Presentation ◽  
Predatory Journals ◽  
Study Results ◽  
The Mean ◽  
Highly Cited

Proper peer review and quality of published articles are often regarded as signs of reliable scientific journals. The aim of this study was to compare whether the quality of statistical reporting and data presentation differs among articles published in ‘predatory dental journals’ and in other dental journals. We evaluated 50 articles published in ‘predatory open access (OA) journals’ and 100 clinical trials published in legitimate dental journals between 2019 and 2020. The quality of statistical reporting and data presentation of each paper was assessed on a scale from 0 (poor) to 10 (high). The mean (SD) quality score of the statistical reporting and data presentation was 2.5 (1.4) for the predatory OA journals, 4.8 (1.8) for the legitimate OA journals, and 5.6 (1.8) for the more visible dental journals. The mean values differed significantly (p < 0.001). The quality of statistical reporting of clinical studies published in predatory journals was found to be lower than in open access and highly cited journals. This difference in quality is a wake-up call to consume study results critically. Poor statistical reporting indicates wider general lower quality in publications where the authors and journals are less likely to be critiqued by peer review.

Foliar application and seed priming of salicylic acid affect growth, fruit yield, and quality of grape tomato under drought stress

2021 ◽  
Vol 280 ◽  
pp. 109904
Author(s):  
Remi Chakma ◽  
Arindam Biswas ◽  
Pantamit Saekong ◽  
Hayat Ullah ◽  
Avishek Datta
Keyword(s):  
Salicylic Acid ◽  
Drought Stress ◽  
Foliar Application ◽  
Seed Priming ◽  
Fruit Yield ◽  
Yield And Quality

Vermicompost substitution influences growth, physiological disorders, fruit yield and quality of strawberry (Fragaria x ananassa Duch.)

2008 ◽  
Vol 99 (17) ◽  
pp. 8507-8511 ◽  
Author(s):  
Rajbir Singh ◽  
R.R. Sharma ◽  
Satyendra Kumar ◽  
R.K. Gupta ◽  
R.T. Patil
Keyword(s):  
Fragaria X Ananassa ◽  
Fruit Yield ◽  
Physiological Disorders ◽  
Yield And Quality

scholarly journals AB0101 THE IMPACT OF TIME SPAN TO ACHIEVE BOOLEAN REMISSION FOR MAINTAINING DISEASE ACTIVITY AFTER ACQUISITION IN RHEUMATOID ARTHRITIS PATIENT

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 1079.1-1079
Author(s):  
I. Yoshii
Keyword(s):  
Rheumatoid Arthritis ◽  
Disease Activity ◽  
Disease Duration ◽  
Remission Rate ◽  
Mean Value ◽  
Time Span ◽  
Mean Values ◽  
The Mean ◽  
The Relationship

Background:Boolean remission criteria is one most popular and stringent criteria in treating patient with rheumatoid arthritis (RA), because it may guarantees a stable clinical course after attaining remission.Objectives:Impact of time span from initiation to achieving Boolean remission on maintaining disease activity, daily activities, and quality of life after attaining Boolean remission was investigated from daily clinical practice data.Methods:685 patients with RA since August 2010 under the T2T strategy were treated. They were monitored for their TJC, SJC, PGA, EGA, CRP, and disease activity indices such as CDAI, SDAI, DAS28, and Boolean criteria at every visit. HAQ-DI score, pain score using visual analog scale (PS-VAS), and EQ-5D were also monitored, and the quality of life score (QOLS) calculated from EQ-5D was determined at every visit from the time of diagnosis (baseline).Of 685 patients, 465 patients had achieved Boolean remission >1 times, and were consecutively followed up for >3 years. These patients were enrolled in the study. Time span from the first visit to first Boolean remission was calculated. The relationship between the time span and each of background parameters, and the relationship between the time span and each of the mean values of the SDAI score, HAQ score, PS-VAS, SHS, and QOLS at the first Boolean remission and thereafter was evaluated statistically.Patients were subsequently divided into the G ≤ 6 and G > 6 groups based on the achievement of first Boolean remission within two groups: time span G ≤ 6 months and G > 6 months. The two groups were compared with regard to the SDAI score, HAQ score, PS-VAS, SHS, and QOLS at first visit and at the time of first Boolean remission, and the mean values of these parameters after remission were evaluated statistically. Moreover, changes of these parameters and the mean Boolean remission rate after the first remission, and SDAI remission rate at the first Boolean remission to thereafter were compared between the two groups statistically.Results:Out of 465 patients, females comprised 343 (73.7%), and the mean age was 67.8 years (range, from 21–95 years). The mean disease duration at first visit was 6.1 years (range, from 1 months–45 years). The mean follow up length was 88.1 months (range: 36–122 months; median: 85 months) and mean time span from the first visit to the first Boolean remission was 8.1 months. The mean SDAI score, HAQ score, PS-VAS, and the QOLS at first visit were 13.3, 0.467, 33.2, and 0.834, respectively. Among the study parameters, PS-VAS and QOLS were significantly correlated with the time span. For parameters at the first Boolean remission, HAQ-DI score, PS-VAS, and QOLS demonstrated significant correlation with the time span, whereas SDAI, HAQ-DI score, PS-VAS, SHS, and QOLS after the Boolean remission demonstrated significant correlation with the time span.The comparison between the G ≤ 6 and the G > 6 groups revealed that the disease duration, HAQ score, and PS-VAS at baseline in the G > 6 were significantly higher than that in the G ≤ 6 group, and QOLS in the G ≤ 6 group was significantly higher than that in the G > 6 group at baseline. Similarly, the HAQ score and PS-VAS at the first Boolean remission in the G > 6 group were significantly higher than that in the G ≤ 6 group, whereas QOLS in the G ≤ 6 group demonstrated no significant difference compared with that in the G > 6 group.The mean value of the SDAI score after the first Boolean remission in the G > 6 group was significantly higher than that in the G ≤ 6 group. Similarly, the SDAI score, HAQ score, and PS-VAS after the first Boolean remission in the G > 6 group were also significantly higher than those in the G ≤ 6 group, and the mean value of the QOLS in the G ≤ 6 group were significantly higher than that in the G > 6 group. The Boolean remission rate and SDAI remission rate after the first Boolean remission were significantly higher in the G ≤ 6 group than those in the G > 6 group.Conclusion:Attaining Boolean remission ≤ 6 months for RA has significant benefit for more stable disease control, that leads good maintenance of ADL.Disclosure of Interests:None declared

Sign in / Sign up

Export Citation Format

Share Document