scholarly journals Estimates of Marketable Yield in Asparagus using Fern Vigor Index and a Minimum Number of Daily Harvest Records

1993 ◽  
Vol 118 (5) ◽  
pp. 558-561 ◽  
Author(s):  
D.J. Wolyn

Fern vigor indices and estimates of percent marketable yield (PMY) were used to determine alternative measures of asparagus (Asparagus officinalis L.) marketable yield. Total yield was highly correlated (0.75 ≤ r ≤ 0.91), and marketable yield was not correlated with fern vigor indices. The products of fern vigor indices and seasonal PMYs were highly predictive of marketable yield (r 20.95). When the products of each daily PMY estimate and fern vigor index for the same season were determined, then averaged over years, <30% of correlations with marketable yield were ≥0.90, and r values varied considerably during the season. The products, averaged for 2 years, of fern vigor index and mean PMY estimated from combinations of three harvest dates during the season, except from the first harvest week, were associated with marketable yield. For the 40 3-day average estimates of PMY examined, 95% of Pearson correlation coefficients were ≥0.90 and all were ≥0.88. Thus, fern vigor index and PMY estimates from three harvest dates may be used to predict temperate zone marketable yield, decreasing labor requirements for yield trials, and facilitating evaluation of many experimental hybrids.

2010 ◽  
Vol 20 (6) ◽  
pp. 996-1000 ◽  
Author(s):  
Gina E. Fernandez ◽  
James R. Ballington

Yield performance of primocane-fruiting experimental blackberry (Rubus spp.) cultivars from two breeding programs were evaluated in the southern Appalachian Mountains. The trial consisted of the nine experimental cultivars: NC 533, NC 534, NC 535, NC 537, NC 538, NC 539, APF-27, APF-46, and Prime-Jim®. In addition, rowcovers were applied to split plots in the spring to determine if harvest dates could be advanced. In 2007, five experimental cultivars had comparable high total yields (APF-27, APF-46, NC 535, NC 537, and NC 539), yet only three of these had comparable marketable yields (APF 27, APF-46, and NC 537). In 2008, APF-27 and APF-46 had significantly higher total yield (2234.5 and 2257.3 g/plant, respectively) and marketable yield (1611.2 and 1654.2 g/plant, respectively) than all other experimental cultivars. Rowcover treatments did not increase or decrease either total or marketable yield in any of the experimental cultivars in either year. In addition, rowcovers did not advance the date of 5% or 50% harvest in either year. On the basis of the conditions imposed in these studies, we determined that “APF” selections evaluated in this trial have higher second-year yield than “NC” selections, primocane-fruiting experimental cultivar yields are lower than yields commonly found with floricane-fruiting blackberries, and rowcovers as applied in this study are not a viable option for advancing harvest season of primocane-fruiting blackberries in the southern Appalachian Mountains.


2019 ◽  
Vol 41 (2) ◽  
Author(s):  
Ayulle Thalía Watson Alcoforado ◽  
Cássia Ângela Pedrozo ◽  
Marcos Miguel Mayer ◽  
Hyanameyka Evangelista de Lima-Primo

Abstract The objective of this study was to estimate coefficients of repeatability, to determine the minimum number of fruits necessary for genotype selection and to estimate phenotypic correlation coefficients between morpho-agronomic characters of Theobroma grandiflorum fruits. It was evaluated twenty - two genotypes of an agroforestry system implanted in the municipality of Cantá - RR. Ten fruits per genotype were collected and evaluated for longitudinal length, transverse diameter, total weight, peel thickness, peel weight, pulp weight, placental weight and wet seed weight. Four statistical methods were used to estimate the repeatability coefficients: variance analysis, main components based on the correlation matrix and the covariance matrix, and structural analysis based on the correlation matrix. The number of measurements needed to predict the real value of the genotypes and the Pearson correlation coefficients among the characters were also estimated. The repeatability coefficients ranged from low to moderate, with 10 fruits per plant generally required, with 85% of confidence, in order to make an effective selection for most of the characters studied. There are possibilities of indirect gains for fruits with greater amount of pulp through the selection of larger and / or heavier fruits.


2019 ◽  
Vol 4 (3) ◽  
pp. 147-152
Author(s):  
Kenneth B. Gordon ◽  
Chenglong Han ◽  
Shu Li ◽  
Yin You ◽  
Michael Song ◽  
...  

Background: Patient-reported and clinician-determined outcomes do not always correlate in clinical trials for psoriasis, even among those with clear skin. Objective: To compare clinical responses with patient-reported outcomes among patients with psoriasis enrolled in 2 phase 3, double-blind, controlled trials of guselkumab (VOYAGE 1 and VOYAGE 2). Methods: Overall, 1432 patients randomized to guselkumab, placebo, or adalimumab at baseline were included in the pooled patient population; measures were assessed at baseline and week 16. End points included proportions of patients achieving 100% improvement in their Psoriasis Area and Severity Index (PASI 100) score and summary scores = 0 on the Psoriasis Symptoms and Signs Diary (PSSD). Proportions of patients with PSSD symptom/sign summary scores = 0 and mean PSSD summary scores were summarized by PASI 100 status. Association between PASI and PSSD scores were evaluated using Pearson correlation coefficients. Results: Among week-16 PASI 100 responders, 46.8% and 34.1% reported PSSD symptom and sign summary scores = 0, respectively, and 30.9% and 49.0% reported minimal symptoms/signs (scores = 1 to <10), respectively; mean scores (scale 0-100) were 6.4 for symptoms and 5.8 for signs. Among PASI 100 nonresponders, only 11.1% (symptoms) and 7.5% (signs) reported PSSD summary scores = 0; mean scores were 25.7 and 26.7, respectively. Correlation coefficients between overall PASI response and PSSD scores were 0.63 (symptoms) and 0.68 (signs; both P < .0001). Conclusion: While PASI and PSSD scores were highly correlated and most PASI 100 responders reported no/minimal symptoms or signs at week 16, substantial discrepancies were found between complete clearance from the clinician’s view versus symptom/sign-free status from patients’ perspectives.


2010 ◽  
Vol 73 (1) ◽  
pp. 55-65 ◽  
Author(s):  
Anna Korus

Effect of the Cultivar and Harvest Date of Kale (Brassica oleraceaL. var.acephala) on Crop Yield and Plant Morphological FeaturesThe experimental material consisted of three kale cultivars: Winterbor F1, Redbor F1and Medium High Green Curly were obtained from three harvest dates. The experiment was conducted in a three-year cycle (2006-2008). Total yields ranged from 5.13 to 9.32 kg·m-2, of which marketable yield constituted on average 51-72% and processing yield 27-34%. In the present experiment, 8.42 kg of total yield per 1m2was obtained from Winterbor F1, 7.55 kg from Medium High Green Curly cv. and 6.71kg from Redbor F1as an average for all years and harvest dates. The highest total yield for all cultivars was from the second harvest date and ranged from 6.76 to 9.32 kg·m-2. The dry matter yield of leaves with removed veins averaged between 0.28 and 0.50 kg per 1m2for all years and harvest dates.


2021 ◽  
Vol 99 (Supplement_2) ◽  
pp. 32-32
Author(s):  
Amanda Holder ◽  
James Rogers ◽  
Ryon Walker ◽  
Paul Beck

Abstract The objective of this study was to determine the effect of diet type on feed intake in mature Angus cows. Forty-eight gestating Angus cows (708 ± 52 kg; 7 ± 0.75 years old) were assigned to one of four drylot pens based on their genomic score for residual feed intake (“High” RFI, 7.3 ± 0.5, “Low” RFI, 5.5 ± 0.7). Each pen contained an automatic waterer as well as four GrowSafe individual feed intake units. During the first period, two of the four pens were assigned to a processed hay diet (10.0% CP, 1.98 Mcal ME/kg DM) while the other two pens consumed a mixed ration consisting of 43.0% hay, 33.0% corn, 13.0% soybean hulls, and 11.0% liquid supplement, DM basis (11.7% CP, DM basis and 2.43 Mcal ME/kg DM). Following a 14-day adaptation period, feed intake was recorded for 45 days. Subsequently, diet type was switched and followed by 14 days of adaptation to the new diet and 45 days of feed intake measurement. Data were analyzed as a crossover study using the GLIMMIX procedure in SAS v9.4. Pearson correlation coefficients were determined between phenotypic traits and genomic score. Feed intake was highly correlated (r = 0.75) among the two diet types. In comparison, average daily gain (ADG) was negatively correlated (r = -0.37) among the two diet types. No differences were observed in DMI or performance for cows ranked “high” or “low” based on genomic score. More research is required to determine if selection for increased weight gain when consuming a high-quality mixed ration could be detrimental to cattle performance consuming moderate to low-quality forage.


1993 ◽  
Vol 27 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Najib Babul ◽  
Andrew C. Darke ◽  
Donald H. Johnson ◽  
Karen Charron-Vincent

OBJECTIVE: To determine the validity of pain intensity recall at 24 and 48 hours as a substitute for hourly pain assessments in repeated-dose analgesic studies. SETTING: Orthopedic unit of an acute care teaching hospital. PARTICIPANTS: Eighty-four patients undergoing arthroscopic reconstruction of the anterior cruciate ligament, using the patellar tendon, who were participating in a randomized, double-blind, parallel-group analgesic study. INTERVENTIONS: Patients rated their pain intensity every hour (while awake) for 48 hours and their recall of worst, least, and usual pain intensity at 24 and 48 hours using a visual analog scale (VAS). MAIN OUTCOME MEASURES: This study examined the relationship between recall of worst, least, and usual pain intensity at 24 and 48 hours and the experienced maximum, minimum, and mean pain intensity VAS scores obtained from hourly assessments over the 0–24- and 0–48-hour periods, respectively. The significance of differences between recalled and experienced pain intensity variables was assessed. RESULTS: Worst, least, and usual pain recall at 24 and 48 hours were highly correlated with experienced maximum, minimum, and mean pain from hourly reports, respectively, over the 0–24- and 0–48-hour periods (Pearson correlation coefficients, r=0.80–0.89, p<0.0001). Among the three pain recall variables, usual pain showed the highest correlation with hourly measurements. There were no significant differences between recalled pain and the corresponding measures of pain from the hourly VAS scores, except in the case of 48-hour recall of worst pain (Student's t-test, p=0.001). CONCLUSIONS: The close agreement between actual pain experience and recall of pain provides support for the use of pain recall in assessing analgesic efficacy in clinical trials.


2019 ◽  
Vol 37 (7_suppl) ◽  
pp. 390-390
Author(s):  
Julie M. Shabto ◽  
Dylan J Martini ◽  
Yuan Liu ◽  
Deepak Ravindranathan ◽  
Meredith R Kline ◽  
...  

390 Background: Neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), and platelet-to-lymphocyte ratio (PLR) have been explored as biomarkers for response to IO. We investigated the association between these biomarkers and clinical outcomes in urothelial cancer pts treated with IO. Methods: We conducted a retrospective review of 67 urothelial cancer pts treated with PD-1 or PD-L1 inhibitors at Winship Cancer Institute from 2015-2018. Overall survival (OS) and progression free survival (PFS) were measured from first dose of IO to date of death or hospice referral and clinical or radiographic progression, respectively. MLR, NLR, and PLR were collected at C1 and C3. The nonlinear relationship between log-transformed biomarkers and OS or PFS was examined by martingale residual plot and optimal cutoff (OC) values were determined. Multivariable analysis (MVA) used Cox proportional hazard model. Results: OC for C1 and C3 NLR, MLR, and PLR were 2.06 and 1.42, -0.331 and -0.153, and 5.7 and 5.6, respectively. Pts with C1 NLR and PLR above OC had worse OS and shorter PFS (all p<0.05) (Table). High C3 MLR portended shorter OS and PFS. NLR, MLR and PLR were highly correlated (Pearson correlation coefficients ≥ 0.67, p<0.0001). Conclusions: High NLR, MLR, and PLR at C1 and at C3 are associated with worse clinical outcomes in this cohort. These values warrant a larger study for validation. MVA† of MLR, NLR, and PLR at C1 and at C3 with OS and PFS. [Table: see text]


2020 ◽  
Vol 124 (11) ◽  
pp. 1229-1240 ◽  
Author(s):  
Suey S. Y. Yeung ◽  
Marijke C. Trappenburg ◽  
Carel G. M. Meskers ◽  
Andrea B. Maier ◽  
Esmee M. Reijnierse

AbstractObjective measurement of RMR may be important for optimal nutritional care but is hindered by the price and practicality of the metabolic monitoring device. This study compared two metabolic monitoring devices for measuring RMR and VO2 and compared the measured RMR with the predicted RMR calculated from equations. RMR was measured using QUARK RMR (reference device) and Fitmate GS (COSMED) in a random order for 30 min, each on fasted participants. In total, sixty-eight adults participated (median age 22 years, interquartile range 21–32). Pearson correlation showed that RMR (r 0·86) and VO2 (r 0·86) were highly correlated between the two devices (P < 0·05). Intraclass correlation coefficients (ICC) showed good relative agreements regarding RMR (ICC = 0·84) and VO2 (ICC = 0·84) (P < 0·05). RMR measured by QUARK RMR was significantly higher (649 (sd 753) kJ/d) than Fitmate GS. Equations significantly overpredicted RMR. Accurate RMR (i.e. within ±10 % of the RMR measured by QUARK RMR) was found among 38 % of the participants for Fitmate GS and among 46–68 % depending on the equations. Bland–Altman analysis showed a low absolute agreement with QUARK RMR at an individual level for both Fitmate GS (limits of agreement (LOA): −828 to +2125 kJ/d) and equations (LOA ranged from −1979 to +1879 kJ/d). In conclusion, both Fitmate GS and predictive equations had low absolute agreements with QUARK RMR at an individual level. Therefore, these limitations should be considered when determining RMR using Fitmate GS or equations.


HortScience ◽  
1991 ◽  
Vol 26 (4) ◽  
pp. 374-377 ◽  
Author(s):  
D.J. Makus ◽  
A.R. Gonzalez

Black and white plastic rowcovers were established over field-grown `Jersey Giant' asparagus (Asparagus officinalis L.). Spears were cut for 7 weeks. Season soil temperatures were lowest under white plastic and highest without plastic covering. Night air temperature under plastic covers was ≈ 1.4C higher than without plastic covering (control), but day air temperature was typically 10C higher under black plastic, with temperatures under white plastic intermediate. Marketable yield (t·ha-1) was improved with the use of plastics as was total yield (P = 0.05), but spear number/ha was similar in all treatments. There was no consistent treatment effect on spear diameter. Average spear weight was higher when under plastic, whereas spear length was reduced compared with uncovered spears. There were no differences among treatments in spear fiber content, but spears grown under plastic covers were higher in soluble solids content, titratable acidity, and nitrate and lower in protein, ascorbic acid, and total phenolics than uncovered spears. Quantitative differences in these constituents were also a function of whether they were from the upper, middle, or lower spear segment. Very little chlorophyll and carotenoids were produced in the absence of light, but there was a chroma (color intensity) difference between spears grown under the two plastics.


2020 ◽  
Vol 42 (4) ◽  
Author(s):  
Lucas Titonelli Ferreira Donato ◽  
Sérgio Luiz Rodrigues Donato ◽  
Cleiton Fernando Barbosa Brito ◽  
Varley Andrade Fonseca ◽  
Carlos Nick Gomes ◽  
...  

Abstract Models for estimating leaf area of bananas found in the literature are not suitable for lanceolate type leaves occurring at the vegetative stage of ratoon suckers dependent of mother plant. The objective was to determine equations for estimating the leaf area of ‘Prata-Anã’ and ‘BRS Platina’ banana plants with lanceolate type leaves. 212 and 164 lanceolate type leaves having 10 cm-wide lamina or less were collected from ‘Prata-Anã’ and ‘BRS Platina’ banana plants of 90 days of age or less, respectively. Width (W), length (L), width/length ratio (WLR), and scanner-measured leaf area (LAscanner) were determined. Using the backward elimination procedure, simple and multiple linear regression equations were fitted to the relationship between leaf dimensions (W, L and WLR) and LAscanner. To evaluate how precise the equations are in predicting leaf area (LApredicted), Pearson correlation coefficients were calculated between LA and LApredictedscanner. The models highly correlated with LAscanner at 1% of significance level. The models are and LALL() = Prata-Anã = - 0,0133624 + 0,000489859**L - 0,00183182 **W and LALL(Platina) 0,00237026 + 0,004781**W - 0,096802** WLR.


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