scholarly journals Effect of Nitrobenzene on Flowering, Fruiting and Quality Parameters of Apple cv. Royal Delicious under Cold Dry Temperate Region of Himachal Pradesh

2020 ◽  
Vol 40 (01) ◽  
Author(s):  
Arun Kumar
Keyword(s):  
Fruit Set ◽  
Moisture Stress ◽  
Fruit Production ◽  
Quality Parameters ◽  
Himachal Pradesh ◽  
Fruit Drop ◽  
Yield And Quality ◽  
Fruit Setting ◽  
Three Stages ◽  
Adverse Environmental Conditions

Apple accounts for more than 74 per cent of total fruit production in Himachal Pradesh. Poor fruit-set as well as heavy fruit drop due to improper pollination, moisture stress and adverse environmental conditions during flowering are the major barriers in dry temperate zone fruit production of apple. Apple tree blooms abundantly but only very few of them matures into fruit and it is the need of the hour to induce better fruiting with chemicals that ultimately augment the productivity. With such an intent the experiment was carried out. Nitrobenzene 20 % EW applied as a foliar treatment at three stages i.e. pink bud, petal fall and fruit setting stage. The highest number of fruits and flowers/plant was observed in T4 (3ml/liter) and T3 (2 ml/liter) of Nitrobenzene 20 % applied treatments. On the other hand the lowest number of flowers as well as fruits were recorded from T2 (1 ml/liter) and T1 (control). Among different treatments tested, 20% nitrobenzene applied at 3 ml/litre showed superior results in contrast to other nitrobenzene levels with enhancing flowering, fruit set, yield and quality.

Deblossoming Monsoon Crop of Guava (Psidium guajava L.) cv. Surahi Affects Yield and Quality of Winter Crop

2019 ◽  
pp. 109-112
Author(s):  
Muhammad Azhar Bashir ◽  
Ammara Noreen ◽  
Muhammad Ikhlaq ◽  
Kashif Shabir ◽  
Faheem Altaf ◽  
...  
Keyword(s):  
Ascorbic Acid Content ◽  
Fruit Fly ◽  
Psidium Guajava ◽  
Soluble Solids ◽  
Naphthalene Acetic Acid ◽  
Research Station ◽  
Fruit Drop ◽  
Yield And Quality ◽  
Fruit Setting ◽  
Winter Crop

Monsoon crop of guava is hit by fruit fly during July-August that results into huge loss to the producers. Spray of urea and Naphthalene acetic acid (NAA) is used to drop flowers and fruits of monsoon crop to get higher yield of winter crop. This study was carried out at Fruit Orchard of Horticultural Research Station, Bahawalpur during 2015-2017 to determine the optimum concentration of selected chemicals to drop flowers and immature fruits of monsoon crop. Plants with distilled water spray were treated as control (T1). Other treatments included urea @ 5% and 10% (T2 & T3), NAA @ 0.05 and 0.1% (T4 & T5) as 1st spray and repeated the same spray after fortnight, combination of urea (5%) as 1st spray followed by NAA (0.05%) as 2nd spray (T6) or urea (10%) 1st spray followed by NAA (0.1%) as 2nd spray (T7). Consolidated means of parameters over two years’ study indicated that the highest fruit yield (68.6 kg/plant), the maximum weight per fruit (168.3 g), number of fruit/plant (375), pulp content (55.5%), pulp thickness (1.05 cm), total soluble solids (14.3 °Brix), ascorbic acid content (176.7 mg / 100 g pulp) and total sugars (7.6%) were obtained as a result of highest flower drop (96.7%) and fruit drop (76.9%) with lowest fruit set (2.9%) from non-target monsoon fruiting in response to 0.1% NAA (T5) sprayed twice at fortnight interval, proceeded after the application of 0.05% NAA two spray fortnightly (T4). The plants under control remained at bottom with respect to parameters i.e. flower and fruit drop, at top with highest fruit setting in monsoon crop that led to the lowest yield of winter crop.

scholarly journals Metabolite profiling in Mango (Mangifera indica L.) pollen grains in relation to viability

2019 ◽  
Vol 14 (1) ◽  
pp. 33-42
Author(s):  
K S Shivashankara ◽  
G A Geetha ◽  
T K Roy
Keyword(s):  
Amino Acids ◽  
Fruit Set ◽  
Mangifera Indica ◽  
Pollen Viability ◽  
Pollen Grains ◽  
Free Sugars ◽  
Fruit Drop ◽  
Fruit Setting ◽  
Viability Percentage ◽  
Pollination And Fertilization

Mango productivity is affected mainly by irregular flowering, proportion of bisexual flowers, poor pollination and fertilization and fruit drop. Poor fruit set in some of the varieties may be associated with the lower pollen viability. The present experiment was initiated to assess the viability of pollen grains and their metabolites in three mango cultivars Amrapali, Alphonso and Totapuri which are differing in their fruit set intensity. The profiling of sugars, amino acids and some of the phytohormones were analysed using Liquid Chromatography-Mass Spectrometry (LC-MS/MS). Assessment of pollen grains in three mango cultivars indicated that free sugars such as fructose and glucose, and available amino acids including serine, proline, lysine, phenylalanine, alanine and glutamic acid were predominantly higher in all the cultivars. Phytohormones like IAA, IBA, ABA, GA,zeatin, jasmonic acid and salicylic acid were significantly different in low fruit setting cultivars Alphonso and Totapuri compared to high fruit setting cultivar Amrapali. In cv. Alphonso all the metabolites were higher at anthesis but later decreased drastically compared to cvs. Totapuri and Amrapali. Pollen viability percentage was significantly higher in cv. Amrapali than in cvs. Totapuri, Alphonso. Among all the cultivars, Amrapali maintained better chemical composition at anthesis and also at two hours after anthesis compared to cvs. Totapuri and Alphonso.

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

2017 ◽  
Vol 39 (3) ◽  
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.

Mechanical blossom thinning of apples and influence on yield, fruit quality and spur leaf area

2015 ◽  
Vol 95 (5) ◽  
pp. 887-896 ◽  
Author(s):  
Kendra A. McClure ◽  
John A. Cline
Keyword(s):  
Leaf Area ◽  
Fruit Quality ◽  
Fruit Set ◽  
Quality Parameters ◽  
Load Management ◽  
Crop Load ◽  
Yield And Quality ◽  
Mechanical Removal ◽  
New Crop

McClure, K. A. and Cline, J. A. 2015. Mechanical blossom thinning of apples and influence on yield, fruit quality and spur leaf area. Can. J. Plant Sci. 95: 887–896. Apple (Malus×domestica Borkh.) trees tend to crop heavily, which often makes crop load adjustment necessary. This can now be achieved as early as bloom by mechanical removal/thinning of blossoms. High-density Empire/M.26 and Royal Gala/M.26 apple trees were mechanically (MBT) and hand blossom thinned (HBT) in 2010 and 2011, respectively, and their effects on fruit set, subsequent hand thinning, final crop load, and spur leaf area were measured. In both years, MBT effectively thinned trees and reduced fruit set, but did not reduce the requirement for follow-up hand fruitlet thinning after June drop in 2011. In 2010, harvest yields for MBT treatments decreased, while weight and diameter increased. In 2011, most harvest and fruit quality parameters were unaffected by thinning. Trees that were mechanically thinned had significantly reduced spur leaf area, but were similar to unthinned control trees with respect to many of the yield and quality parameters measured. Mechanical blossom thinning is a new crop load management option for apple growers looking to supplement more traditional chemical and hand thinning techniques.

scholarly journals Selection of Nutmeg Mother Trees In The Germplasm Collection at Cicurug Experimental Station Sukabumi

2018 ◽  
Vol 29 (1) ◽  
pp. 21
Author(s):  
Nurliani Bermawie ◽  
NFN Ma’mun ◽  
Susi Purwiyanti ◽  
Wawan Lukman
Keyword(s):  
Germplasm Collection ◽  
Morphological Characters ◽  
Fruit Production ◽  
Quality Parameters ◽  
Fruit Yield ◽  
Experimental Station ◽  
Yield And Quality ◽  
Standard Quality ◽  
Bisexual Males ◽  
Main Components

<em>Nutmeg has been known as native spices to Indonesia. The widespread cultivation of nutmeg cause the high demand for nutmeg seeds, hence the source of quality seeds is needed. The purpose of this study was to evaluate sex, morphological characters, yield and quality to be recommended as source of quality seeds. The research was conducted at Cicurug Experimental Station, Sukabumi (550 m asl).  The parameters observed were the sex of trees, and yield per tree harvested for nine years from 2007-2015. The quality was analyzed using Gas Chromatography Mass Spectra (GC-MS). The sex of the trees observations resulted 152 accessions (34.7 %) were pure males, 83 accessions (18.9 %) bisexual males and 203 accessions (46 %) pure females. Based on fruit yield, from 203 female nutmeg trees, 20 accessions produced high fruit yield &gt;2,500 fruits/tree/year. GC-MS analysis showed the number of identified compounds were 18-30 compounds with the main components were α-pinene, ß-pinene, sabinene, limonene, 4-terpineol, safrol, elemicin and myristicin. The 20 selected accessions met the quality standards for the essential oil, limonene and elemicin levels, but only five accessionsmet the standard quality for α-pinene, two accessions for ß-pinene, five accessions for sabinen, 18 accessions for 4-terpineol,  13  on  safrol,  and  11  accessions  for  myristicin  levels.  Tree  selected <em>accessions Botol 122, Irian 112 and Kupal 139 fulfilled nine out of ten quality parameters, whereas other accessions only fulfilled eight to four quality parameters. Accessions that achieved the criteria of fruit production should be recommended as source of quality seeds.</em></em>

scholarly journals Yield and quality of the Tetsukabuto squash fruits induced with 2,4-D doses under dry conditions

2017 ◽  
Vol 35 (2) ◽  
pp. 271-277
Author(s):  
Roberto CF Queiroga ◽  
Gabriel D Silva ◽  
Auderlan M Pereira ◽  
Ricardo RP Almeida ◽  
Ariano B Silva
Keyword(s):  
Fruit Set ◽  
Fruit Production ◽  
Climatic Conditions ◽  
Soluble Solids ◽  
Plant Production ◽  
Control Treatment ◽  
Yield And Quality ◽  
Dry Conditions ◽  
Fruit Mass

ABSTRACT Squashes and pumpkins are known and grown worldwide, including the Tetsukabuto type, a hybrid of Japanese origin. On this work, we evaluated yield and quality of parthenocarpic fruits of hybrid Tetsukabuto developed with the use of 2,4-D doses, in the climatic conditions of the Brazilian semiarid, in the city of Pombal, state of Paraíba, Brazil. The experiment was carried out from February to May 2013, in complete blocks at random and five replications. Treatments corresponded to five 2,4-D doses (0, 90, 180, 270, and 360 mg/L) applied to female flowers, and a control treatment, where fruits developed out of insect pollinated flowers. We evaluated number of flowers per plant, duration of flowering, number of fruits per plant (used to estimate number of fruits per hectare), fruit set index, fruit mass and transversal and longitudinal diameters, pulp thickness and content of soluble solids, total fruit production and yield. Number of fruits per plant and fruit mass increased 269.5 and 15.4%, respectively, with 212.1 mg/L and 360.0 mg/L of 2,4-D, when compared to the control treatment. Increasing the 2,4-D dose from 0.0 to 241.4 mg/L resulted in 38.2% rise in plant production. Correlations were significant only for number of flowers x number of fruits per plant (NF) and NF x yield, with coefficients of 87.5 and 82.7%, respectively. These results indicate that fruit induction using 2,4-D resulted in higher fruit set, independent of the 2,4-D dose applied.

scholarly journals Mango Fruit Yield and Critical Quality Parameters Respond to Foliar and Soil Applications of Zinc and Boron

Plants ◽  
2018 ◽  
Vol 7 (4) ◽  
pp. 97 ◽  
Author(s):  
Iftikhar Ahmad ◽  
Fatma Bibi ◽  
Hameed Ullah ◽  
Tariq Munir
Keyword(s):  
Fruit Set ◽  
Mangifera Indica ◽  
Titratable Acidity ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Change Scenario ◽  
Soil Application ◽  
Yield And Quality ◽  
Physiological Quality

Mango (Mangifera indica L.), the sixth most important fruit crop worldwide, is likely at risk under a climate change scenario of accelerated soil organic matter mineralization and constrained plant nutrient supplies such as zinc (Zn) and boron (B). We identified the optimum nutrient formulation and application method to possibly rectify nutrient deficits in mango plants grown in one of the warmest and driest regions—Multan, Pakistan. We evaluated the yield and physiological (quality) responses of 20-year-old mango trees to seven treatments of foliar and soil applications of Zn and B. Combined soil application of B and Zn resulted in optimum increases in leaf mineral B and Zn and fruit-set, retention, yield, pulp recovery and total soluble solids at ripening (p = 0.021), while reducing titratable acidity and early fruit shedding (p = 0.034). Additionally, this treatment improved fruit quality (taste, flavour, texture, aroma, acceptability; p ≤ 0.05). Yield was found to be correlated with retention percentage (P ≤ 0.001; R2 = 0.91), which was in turn related to fruit-set number panicle−1 (P = 0.039; R2 = 0.61). Therefore, we suggest that combined soil application of B and Zn mitigates leaf mineral deficiencies and improves the yield and quality of mango more efficiently than other individual or combined foliar or soil treatments used in this study.

scholarly journals Fruit Set as an Index for Harvesting Edward Mangos

1969 ◽  
Vol 63 (1) ◽  
pp. 31-34
Author(s):  
Hugo L. Cancel ◽  
Teresa García de Pérez
Keyword(s):  
Fruit Set ◽  
Fruit Production ◽  
Maximum Diameter ◽  
Prolonged Storage ◽  
Advanced Stage ◽  
Fruit Setting ◽  
Tree Fruits ◽  
Green Stage

Fruit set was used as an index for harvesting mangos of the Edward variety. Fruit setting date was determined for each tree in order to establish one harvesting date for the total fruit production of that tree. Fruits were classified according to size and ripeness. At 15 weeks after fruit set there were a large number of fruits with the maximum diameter of 3 in or larger. These fruits were in a mature but green stage. A longer delay of harvesting after fruit set gave fruits of a more advanced stage of ripeness. Although these fruits could be used for immediate consumption, they can not withstand too much handling or prolonged storage.

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