scholarly journals Effects of gibberellic acids on time of maturity and on yield and quality of cauliflower.

1990 ◽  
Vol 38 (4) ◽  
pp. 641-651
Author(s):  
R. Booij

Gibberellic acid (GA4+7) was applied to cauliflower crops of the cultivars Delira and Elgon, grown in spring and summer of the years 1984, 1985 and 1986. Observations were made on the timing of the end of the juvenile phase and of curd initiation, the final number of leaves and the total length of growing period. In most crops the period between transplanting and harvest was shortened when GA4+7 was applied twice after the end of juvenility at a concentration of 80 mg/litre. The extent of shortening of the growing period increased with increasing difference between the number of leaves initiated at the time of application and the final number of leaves of the untreated crop. GA4+7 reduced the final number of leaves. Quality of the curds was unaffected by the treatment in most harvests, but the bracting incidence was reduced. In crops of cv. Delira with a low final number of leaves, size and quality of the curds was reduced. The results are discussed in relation to harvest planning of cauliflower. (Abstract retrieved from CAB Abstracts by CABI’s permission)

2016 ◽  
Vol 41 (3) ◽  
pp. 481-489
Author(s):  
S Chowhan ◽  
MM Hossain ◽  
MA Hoque ◽  
G Rasul ◽  
MS Roni

Five strawberry genotypes ('Rabi 3', 'Camarosa', 'BARI Strawberry 1', 'BADC Strawberry' and 'Festival') were evaluated for their field performance. The maximum number of leaves/plant (14.2), canopy spread (31.82 cm) and runners/plant (7.2) were found with 'Camarosa', 'Festival' and 'Rabi 3' respectively. Festival took the lowest number of days to flower initiation (32.5). The highest number of flowers (23.64) and fruits/plant (19.98) were found in 'Camarosa'. The heaviest (21.83 g) and the largest sized individual fruit (1539.31 mm2) were produced by 'Festival'. Fruit TSS (%) was the highest (15.83) in BARI Strawberry 1. Genotype 'Festival' gave the highest fruit yield (12.94 t/ha) and 'BADC Strawberry' yielded the lowest (6.15 t/ha). Considering growth, yield and quality of fruit, genotypes 'Festival' and 'Camarosa' were found promising under the climatic condition of Salna.Bangladesh J. Agril. Res. 41(3): 481-489, September 2016


2020 ◽  
Vol 9 (7) ◽  
pp. e130973911
Author(s):  
Roberto Cleiton Fernandes de Queiroga ◽  
Zaqueu Lopes da Silva ◽  
Odair Honorato Oliveira de ◽  
Elidayane da Nóbrega Santos ◽  
Higínio Luan Oliveira Silva ◽  
...  

The objective of this study was to evaluate the productivity and quality of melon fruits as a function of the dose and time of application of biostimulant in the conditions of the semi-arid region of Paraíba. The experiment was carried out at the Federal University of Campina Grande, campus of Pombal - PB, Brazil, in a randomized block design in a 4 x 5 split plot scheme, with doses of biostimulant (0; 0.5; 1.0; 1, 5 and 2.0 L ha-1) and in the subset of the biostimulant application times (15; 20; 25 and 30 days before harvest - DAC), in four replications. Characteristics related to fruit production and quality were evaluated. There was no interaction between the factors of dose and application time of the biostimulant in any of the evaluated characteristics. Thus, the highest estimated values of number of fruits per plant, fruit mass and total melon production were obtained with the application of doses ranging from 0.9 to 1.5 L ha-1 and at the time of application it varied from 22,5 to 23.6 DAC. The content of soluble solids increased 5.5% when the biostimulant dose of 2.0 L ha-1 was used and 4.4% when the product was applied 15 days before harvest.


2017 ◽  
Vol 39 (3) ◽  
Author(s):  
JULIANA DOMINGUES LIMA ◽  
JÉSSICA ANDRADE FLORENCIO ◽  
WILSON DA SILVA MORAES ◽  
SILVIA HELENA MODENESE GORLA DA SILVA ◽  
EDUARDO NARDINI GOMES ◽  
...  

ABSTRACT With the advent of black sigatoka in commercial banana crops in the “Vale do Ribeira” region, state of São Paulo, the monitoring the severity and chemical control of the disease in susceptible varieties have become more frequent in order to avoid leaf loss. This study simulated the effect of defoliation caused by the disease on the yield and quality of ‘Prata Comum’ banana fruits, depending on the formation period and fruit position in the bunch. The experimental design was completely randomized in a 2 x11 factorial scheme (period of bunch formation x number of leaves at flowering), 6-16 leaves at flowering in two periods of bunch formation with six replicates. In Period 1, flowering occurred at 04/15/13 and in Period 2 at 01/07/14, although in Period 1, bunch mass was higher and in Period 2, higher average maximum and minimum daily temperatures, precipitation and radiation were observed. Regardless of formation period, the number of leaves at flowering affected bunch mass, which ranged from 18 to 23 kg plant-1. Defoliation affected the size of fruits of hand 1 and last hand of the bunch, but not the variability in fruit size due to the position the fruit occupies in the bunch and physicochemical characteristics.


2015 ◽  
Vol 16 ◽  
pp. 161-169 ◽  
Author(s):  
K Ghimire ◽  
DM Gautam ◽  
K Mishra ◽  
KR Pande ◽  
A GC

The study was conducted on sandy loam soil at IAAS Rampur, Chitwan during May to September, 2012 to evaluate the effect of different combinations of biogas slurry and urea on production of okra, laid out in a two-factor RCBD with three replications. Altogether ten treatments consist of two varieties namely Arka Anamika - open pollinated and Jaikisan-62-F1 hybrid and four different levels of biogas slurry and urea combination (urea75%+biogas slurry25%, urea50%+biogas slurry50%, urea25%+biogas slurry75% and biogas slurry100%) and only inorganic chemical (75:60:50 kg NPK/ha) as control. All treatments were based on fulfillment of required nitrogen for the crop. The results showed that application of urea50%+biogas slurry50% increased plant height, leaf area, number of leaves and number of nodes at final harvesting. Treatment urea50% + biogas slurry50% allow maximum number of pickings/plant (23.2) and number of fruits/plant (23.5) resulting highest yield/plant (376.3 g). Among the varieties, Jaikisan-62 is superior in terms of growth, yield and post harvest character than Arka Anamika. The net return (Rs. 474,136/ha) and mean B/C ratio was highest (2.59) in Jaikisan-62 treated with urea50%+biogas slurry50%. So, for the commercial production hybrid variety is suggested.


2005 ◽  
Vol 56 (5) ◽  
pp. 497
Author(s):  
K. Usha ◽  
D. Kashyap ◽  
B. Singh

Gibberellins have been used to improve quality of grapes in several cases. However, gibberellic acid (GA) alone is not enough to improve the quality in Perlette. A field experiment was conducted on 3-year-old grape cv. Perlette trained on pergolas, to investigate the effect of bunch dipping with GA3 and N6-benzyladenine (BA) on reducing the problem of shot berries and improving the productivity of grapevines. Our observations proved that the stage of application of GA3 and BA is crucial to avoiding seed formation in seedless varieties such as Perlette for table grapes. The results showed that BA at low (10 µL/L) or high concentration (30 µL/L) at 50% of full bloom caused seed development in the seedless grape cv. Perlette, whereas no seed was formed when BA was used later at the fruit set stage. Based on our studies, we found that bunch dipping with 30 µL/L GA3 (at 50% of full bloom) and 10µL/L BA (at pea size) significantly reduced the problem of shot berries, and improved the yield and quality in grape cv. Perlette.


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