scholarly journals Effect of nitrates alone or with paclobutrazol on flowering induction and production in mango cv. Tommy Atkins//Efecto de nitratos solos o con paclobutrazol en la inducción floral y producción en mango cv. Tommy Atkins

Biotecnia ◽  
2020 ◽  
Vol 22 (2) ◽  
pp. 20-27
Author(s):  
Moisés Morales-Martinez ◽  
Pedro Antonio Moscoso-Ramírez ◽  
Mepivoseth Castelán-Estrada ◽  
Adriana Contreras- Oliva
Keyword(s):  
Foliar Application ◽  
Floral Induction ◽  
Mangifera Indica ◽  
Fruit Production ◽  
Fruit Weight ◽  
Agricultural Practice ◽  
Tropical Regions ◽  
Flowering Induction ◽  
Randomized Design ◽  
Control Water

The flowering induction in mango (Mangifera indica L.) orchards is an agricultural practice carried out on tropical regions to obtain fruits out-of-season looking to reach better sale prices. The objective of this research was to evaluate the effect of potassium (PN), ammonium nitrate (AN) and paclobutrazol (PBZ) on flowering induction and fruit production in mango cv. Tommy Atkins. The experiment included fourteen treatments with 2, 4, and 6 % PN, and 2, 3 and 4 % AN applied in combination with PBZ (1 g of a.i. m-1 of canopy diameter), paclobutrazol alone (1 g of a.i. m-1 of canopy diameter), and a control (water), which were arranged in a completely randomized design with three replicates. Results show that floral induction and fruit production were improved: PBZ followed by foliar application PN 2 %, 4 % or 6 % induced flowering 16 days after treatments. Likewise, the major number of emerged panicles were obtained with PBZ + PN 6 %. An increase on fruit weight and size reduction was observed at harvest. PBZ followed by foliar application of nitrates induced flowering and enhanced the number developed panicles in mango cv. Tommy Atkins.RESUMENLa inducción floral en mango (Mangifera indica L.) es una práctica agrícola común en regiones tropicales, tendiente a obtener frutos fuera de temporada para lograr mejores precios de la cosecha. Este trabajo tuvo como objetivo evaluar el efecto de tratamientos de nitrato de potasio (PN), nitrato de amonio (AN) y paclobutrazol (PBZ) sobre la inducción floral y producción de fruto en mango cv. Tommy Atkins. Los tratamientos con PN al 2, 4, y 6 % y AN al 2, 3 y 4 % fueron aplicados solos o combinados con PBZ (1 g de i.a. m-1 de diámetro de copa), PBZ solo y un testigo (agua) bajo un diseño completamente al azar, con tres repeticiones. Se midieron variables de inducción floral y producción de fruto. Los resultados muestran que aplicación foliar de PBZ seguida de PN (2 %), (4 %) o (6 %) indujeron floración 16 días después del tratamiento. El mayor número de panículas emergidas se obtuvieron con PBZ + PN 6 %. Se observó una reducción de peso y tamaño de fruto a la cosecha. El PBZ seguido de aplicaciones foliares con NP y AN induce floración y aumenta el número de panículas desarrolladas en mango cv. Tommy Atkins.

Effect of Soil and Foliar Applications of Micronutrients on Flowering and Yield of Mango

2021 ◽  
Vol 8 (01) ◽  
Author(s):  
H L KACHA ◽  
H C PATEL ◽  
D R PARADAVA
Keyword(s):  
Foliar Application ◽  
Fruit Weight ◽  
Flower Bud ◽  
Soil Application ◽  
Mango Tree ◽  
Randomized Design ◽  
And Control ◽  
Bud Initiation ◽  
Horticultural Research ◽  
Control Water

The experiment was carried out during the spring and summer seasons of the year 2017-18 and 2018-19 at the Horticultural Research Farm, AAU, Anand to study the “Effect of soil and foliar applications of micronutrients on flowering and yield of mango variety”. The experimentcomprised of 13 treatments of different micronutrients application viz. FeSO4 100 g, ZnSO4 100 g, Borax 100 g and multimicronutrients grade-V 400 g as a soil application; FeSO4 0.5 %, ZnSO4 0.5 %, borax 0.2 % and multimicronutrients grade-IV 1.0 % as a foliar application and its combinassions and control (water spray). Soil application was done at second fortnight of September and foliar sprays of treatments were done at flower bud initiation, full bloom stage and pea stage initiationon 18 years old mango tree cv. Mallika. Experiment was laid out in a Completely Randomized Design (CRD) with three repetitions. Numbers of staminate, hermaphrodite and total number of flowers per panicle were found significant with respect to various micronutrients treatments during both the years of experiment. Maximum staminate flowers per panicle, hermaphrodite flowers per panicle and total number of flowers per panicle was found with soil application of multimicronutrients grade-V 400 g followed by foliar application of multimicronutrients grade-IV 1.0 % during both the years of study. The significantly higher number of fruits, average fruit weight and fruit yield per tree were recorded with soil application of multimicronutrients grade-V 400 g followed by foliar application of multimicronutrients grade-IV 1.0 % during the years 2017-18 and 2018-19.

scholarly journals Modified Off–Season Technology to the Flowering Time and Fruit Yield of Arumanis Mango (Mangifera indica L.)

2021 ◽  
Vol 226 ◽  
pp. 00045
Author(s):  
Syarif Husen ◽  
Erny Ishartati ◽  
Muhidin Muhidin ◽  
Devi Dwi Siskawardani ◽  
Anjar Rizky ◽  
...  
Keyword(s):  
Mangifera Indica ◽  
Organic Fertilizer ◽  
Fertilizer Application ◽  
Fruit Production ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Flowering Period ◽  
Panicle Length ◽  
Mango Fruit ◽  
Weight Yield

The purpose of this study was to observe the technology of mango fruit production at off-season used growth regulators. The research was conducted with three treatments namely: i) Paclobutrazol dosage (control, 5 mL L–1 per tree, 10 mL L–1 per tree and 15 L–1 per tree). ii) Ethephon dosages (0 mL L-1 per tree, 400 mL L–1 per tree, 600 mL L–1 per tree and 800 mL L–1 per tree) that applied 1 mo after paclobutrazol addition. iii) Paclobutrazol (P) and organic fertilizer (F) application in combination as follows: (control, 5 mL + 10 kg, 10 mL + 15 kg, 15 mL + 20 kg) Randomized Completely Block Designed (RCBD) with five replications was used. The results indicated that i) Paclobutrazol application accelerated the flowering age, shortens the panicle length, and increased fruit yield of the tree. ii) Giving Ethephon accelerated the flowering period, enhanced both the panicles number and yields. The treatment of ethephones 600 mL L–1 produced the highest fruit weight, 182.60 kg, respectively iii) The Paclobutrazol and organic fertilizer application indicated significantly (p < 0.05) to the panicles number and the fruit weight yield is higher than the control.

scholarly journals Yield and fruit quality of Ziziphus jujuba L. trees as affected by preharvest foliar application of calcium and ascorbic acid

2020 ◽  
Vol 19 (5) ◽  
pp. 151-158
Author(s):  
Adel Mohamed Al-Saif ◽  
Mahmoud Abdel-Aziz Ahmed ◽  
Rashid Al-Obeed ◽  
Ahmed Said El-Sabagh
Keyword(s):  
Ascorbic Acid ◽  
Fruit Quality ◽  
Foliar Application ◽  
Fruit Weight ◽  
King Saud University ◽  
Experimental Station ◽  
Ziziphus Jujuba ◽  
Physical And Chemical ◽  
Control Water

The present study was carried out during the seasons of 2014 and 2015 at the Research and Agricultural Experimental Station, King Saud University, Saudi Arabia, to investigate the effects of foliar application of CaCl2 at 1 or 2%, Ca(NO3)2 at 0.5 or 1% and ascorbic acid at 50 or 100 ppm on yield and fruit quality of Ziziphus jujuba trees. All treatments were repeated twice (December 15 and January 15) before harvest date in both seasons. Treatments significantly improved yield and fruit physical characteristics (fruit weight, flesh weight, fruit volume, fruit length, fruit diameter and fruit firmness) in comparison to untreated control in both seasons. Fruit chemical characteristics (TSS, Acidity, total sugar contents, ascorbic acid, and total chlorophyll) were mostly improved by most tested treatments in both seasons over the control (water only). It can be concluded that foliar application with Ca(NO3)2 at 1% would be the best treatment to obtain highest yield, fruit physical and chemical composition of Z. jujuba.

scholarly journals Effect of plant growth regulators on growth, yield and fruit quality of strawberry (Fragaria x ananassa Duch.) under protected conditions

2017 ◽  
Vol 9 (3) ◽  
pp. 1676-1681
Author(s):  
Yash Thakur ◽  
J. S. Chandel ◽  
Pramod Verma
Keyword(s):  
Fruit Quality ◽  
Fruit Size ◽  
Foliar Spray ◽  
Growth Yield ◽  
Fruit Weight ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
And Control ◽  
Control Water

A field trial was conducted during 2015 and 2016, to study the effect ofgrowth regulators on growth, flowering, yield and fruit quality of strawberry cv. Chandler. The experiment was laid out in completely randomized design with 16 treatments viz.CPPU at 1, 2 and 4 ppm, GA3 at 25, 50 and 75 ppm, Promalin at 2, 4 and 6 ppm, GA4+7 at 5, 10 and15 ppm, NAA at 10, 20 and 30 ppm and control (water spray) and each treatment was replicated thrice. The results revealed that the plants sprayed with 15 ppm GA4+7 two weeks before flowering significantly reported highest plant height (33.43 cm), leaf area (239.70 cm2), number of flowers (31.94), fruit set (87.45 %), number of fruits per plant (29.02), yield (540.01 g/plant), fruit length (53.63 mm) and fruit diameter (37.19 mm) and fruit weight (23.70 g) as compared to control. This treatment resulted in 196.36 % increase in yield and 56.22 %in fruit weight over control. Plants sprayed with 6 ppm promalin also showed significant improvement in vegetative growth, fruit size, yield and fruit quality, which resulted in 137.92 % increase in yield and 51.81 % increase in fruit weight over control. Hence, it is concluded that foliar spray of 15 ppm GA4+7 applied 2 weeks before flowering is beneficial in improving growth, yield and fruit quality of strawberry plants.

scholarly journals Reaction of Tomato CV. Roma VF (Solanum Lycopersicum) to Meloidogyne Javanica Treub Infestation in an Ultisol Treated with Aqueous Leaf Extracts of Bitter Leaf (Vernonia Amygdalina L.) and Mango (Mangifera Indica L.)

2011 ◽  
Vol 51 (1) ◽  
pp. 14-17 ◽  
Author(s):  
Solomon Ogwulumba ◽  
Kevin Ugwuoke ◽  
Rufus Ogbuji
Keyword(s):  
Solanum Lycopersicum ◽  
Mangifera Indica ◽  
Meloidogyne Javanica ◽  
Fruit Weight ◽  
Vernonia Amygdalina ◽  
Leaf Extracts ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Gall Index ◽  
Set Up

Reaction of Tomato CV. Roma VF (Solanum Lycopersicum) to Meloidogyne Javanica Treub Infestation in an Ultisol Treated with Aqueous Leaf Extracts of Bitter Leaf (Vernonia Amygdalina L.) and Mango (Mangifera Indica L.) The reaction of tomato cv. Roma vf (Solanum lycopersicum) to Meloidogyne javanica Treub infestation in an ultisol treated with aqueous leaf extracts of bitter leaf (Vernonia amygdalina L.) and mango (Mangifera indica L.) was investigated in the Federal College of Agriculture Ishiagu, Ebonyi State, SE Nigeria. Two pot experiments were performed in 2008 and 2009. The various leaf extracts were used at three concentrations of 150 g/l, 300 g/l, and 450 g/l. The soil of the site was characterised as ultisol. Soil without the extracts served as the control. The experiment was set up in a Completely randomized design with four replications. Data obtained were averaged for the two experiments and subjected to the statistical analysis of variance using Genstat Edition 3 Release 7.2. Obtained data concerned plant height (cm), number of leaves at 50% anthesis, number of fruit and fruit weight (g) at harvest, number of galled roots and gall index at harvest. Results showed that the two leaf extracts had highly significant (p < 0.01) effects on all the data. The extracts showed a high nemato-toxic effect on the nematode by reducing the number of galled roots and gall index as well as increasing the fruit weight at the application of water extracts of bitter leaf and mango leaf at the concentration of 450 g/l. This dose gave the highest fruit weight and could be recommended to farmers.

Effect of cincturing and chemical treatments on growth, flowering and yield of mango (Mangifera indica L.) cv. Kensington Pride

1999 ◽  
Vol 39 (6) ◽  
pp. 761 ◽  
Author(s):  
S. J. Blaikie ◽  
J. Leonardi ◽  
E. K. Chacko ◽  
W. J. Muller ◽  
N. Steele Scott
Keyword(s):  
Vegetative Growth ◽  
Field Experiments ◽  
Mangifera Indica ◽  
Fold Increase ◽  
Fruit Production ◽  
Tree Age ◽  
Modified Technique ◽  
Tropical Regions ◽  
Chemical Treatments ◽  
Positive Effects

Summary. Mango (Mangifera indica cv. Kensington Pride) is the main horticultural tree crop grown in the tropical regions of northern Australia. A major problem for growers is that flowering and fruiting of this cultivar is highly variable from year to year. A series of field experiments was conducted to evaluate cincturing and chemical treatments as a means of improving mango productivity. A standard cincture (Cincture) was compared with a modified technique in which twine was tied tightly into a cincture groove (Twine). The chemical treatment was based on a morphactin formulation (MF) and was introduced to the trees by either painting directly onto the bark of the tree trunk (MF-paint) or soaking twine in MF before tying it into a trunk cincture (MF-twine). The amount of morphactin applied varied with tree age and was in the range from 0–0.06 g active ingredient (a.i.) per tree. Tree responses, measured in terms of vegetative growth, flowering and fruiting, were compared with trees that had been treated with a physical cincture only, or with paclobutrazol (up to 5.0 g a.i.), applied as a collar drench. In young (3–8-year-old) trees, Twine, MF-twine and MF-paint had a positive effect on flowering and fruiting. These trees had earlier, more intense flowering, produced early (September) maturing fruit (up to about 4-fold increase) and had high fruit production (up to about 2-fold increase in fruit number) compared with controls. In some cases vegetative growth was reduced by 50–60% compared with untreated trees. Twine and MF-twine are favoured over MF-paint because (i) the paint must be applied annually, incurring high labour costs, and (ii) paint treatments carry the risk of overdosing the trees with morphactin. The positive effects of Twine and MF-twine treatments were sustained, with large responses in flowering and/or fruiting 2–4 years after application. The responses in fruit production from paclobutrazol, applied at rates based on manufacturer’s recommendations, were less than with Twine, MF-twine or MF-paint.

scholarly journals Heterogeneous salinity in the root system of bell pepper in greenhouse

2018 ◽  
Vol 22 (8) ◽  
pp. 519-524
Author(s):  
Francisco de A. de Oliveira ◽  
Rita de C. Alves ◽  
Francisco M. S. Bezerra ◽  
Luan A. Lima ◽  
Ana S. de Medeiros ◽  
...  
Keyword(s):  
Root System ◽  
Nutrient Solution ◽  
Dry Matter ◽  
Saline Water ◽  
Fruit Production ◽  
Fruit Weight ◽  
Saline Stress ◽  
Low Salinity ◽  
Randomized Design ◽  
Salinity Water

ABSTRACT The split-root technique was used as a strategy to reduce saline stress on pepper. A completely randomized design with six treatments and four replicates was used. The treatments consisted of six saline water application strategies (T1 - salinized nutrient solution (S1 = 1.4 dS m-1) during the whole cycle; T2 - salinized nutrient solution (S2 = 4.5 dS m-1) throughout the cycle, T3 - S1 and S2 throughout the cycle, using two emitters and without splitting the root system, T4 - S1 and S2, using two emitters and splitting the root system by a plastic film, T5 - S1 and S2, using two emitters and splitting the root system, alternating the solutions every 15 days, T6 - S1 and S2, using two emitters and without splitting the root system, alternating the solutions every 15 days). Five fruit harvests were performed, and the plants were harvested at 85 days after initiation of treatments and evaluated for the following variables: leaf number, leaf area, plant height, stem diameter, shoot dry matter (stem + leaves + fruits), root dry matter, number of fruits, fresh fruit weight and fruit production per plant. Most of the variables were reduced by the salinity of irrigation water. The highest fruit yields were obtained using low-salinity water, with the mixture of non-saline and saline waters, and alternating biweekly when the root system was split, demonstrating the viability of these three techniques.

scholarly journals Yield And Quality Of Mango (Mangifera indica L.) As Influenced By Foliar Application Of Potassium Nitrate And Urea

2013 ◽  
Vol 38 (1) ◽  
pp. 145-154 ◽  
Author(s):  
Babul Chandra Sarker ◽  
MA Rahim
Keyword(s):  
Foliar Application ◽  
Mangifera Indica ◽  
Maximum Yield ◽  
Potassium Nitrate ◽  
Water Spray ◽  
Yield And Quality ◽  
Number Of Leaves ◽  
Terminal Shoot ◽  
Control Water

The experiment to determine the effects of KNO3 and urea in manipulating the harvesting time and increasing yield as well as quality of nine years old mango (Mangifera indica L.) cv. Amrapali plants was carried out at the BAU Germplasm Centre, Department of Horticulture, Bangladesh Agricultural University, Mymensingh during the period from September 2006 to July 2007. The five treatments included in the experiment were potassium nitrate at 4%, 6% and 8%; urea at 2% and 4% and the control (water spray). Foliar spraying of urea at 4% exhibited better performance in relation to terminal shoot length, number of leaves and leaf area and potassium nitrate at 4% gave superior results with respect to length and breadth of panicle and number of secondary branches per panicle compared to control. The plants sprayed with KNO3 at 4% expressed earlier panicle appearance by 17 days as compared to delayed appearance of panicle in untreated control plants. The plants received KNO3 at 4% produced the highest number of panicles per plant (220.67) whereas the control plants had the least number of panicles (107.67). Regardless of concentration, KNO3 and urea manifested slightly earlier harvest (5 days) compared to control. Plants treated with KNO3 at 4% noted the highest number of fruits per plant (136.67) compared to control (62.67). The treatment urea at 4% resulted in the biggest fruit (202.83g) and the control plants exhibited the smallest fruit (175.00g). Potassium nitrate at 4% gave maximum yield (23.14 kg/plant) as compared to minimum yield (9.12 kg/plant) in the control (water spray). Bangladesh J. Agril. Res. 38(1): 145-154, March 2013 DOI: http://dx.doi.org/10.3329/bjar.v38i1.15201

scholarly journals Effect of foliar application of potassium and its spray schedule on yield and yield parameters of sweet orange (Citrus sinensis Osbeck) cv. Jaffa

2017 ◽  
Vol 9 (2) ◽  
pp. 786-790
Author(s):  
Vijay Vijay ◽  
R. P. S. Dalal ◽  
B. S. Beniwal ◽  
Hemant Saini
Keyword(s):  
Foliar Application ◽  
Sweet Orange ◽  
Potassium Nitrate ◽  
Fruit Weight ◽  
Climatic Conditions ◽  
Fruit Yield ◽  
Western India ◽  
Yield Parameters ◽  
North Western ◽  
Control Water

An investigation to evaluate the effect of foliar application of potassium and its spray schedule on yield and yield parameters in sweet orange cv. Jaffa was undertaken at experimental orchard, Department of Horticulture, CCS Haryana Agricultural University, Hisar during the year 2014-15. The results revealed that the foliar application of potassium nitrate at the rate of 2 and 4 % and potassium sulphate at 1.5 and 3.0 % significantly improved average fruit weight, fruit diameter, percentage of medium and large fruits, and fruit yield of sweet orange cv. Jaffa over control (water spray). The trend was vice-versa on the percentage of small fruits. The number of fruits per plant could not differ significantly due to various treatments. Among K sources and doses, foliar application of KNO3 at 4 % exhibited superiority over other treatments with respect to yield and yield parameters followed by KNO3 at lower dose (2 %) or K2SO4 at higher dose (3 %). Among various spray schedules, application of three sprays of K in the last week of April, May and August were found superior or at par in improving yield and yield parameters with 2 sprays in the last week of April and August. The fruit yield was recorded the highest (76.90 kg/plant) with a combination of the foliar application of KNO3 at 4 % and 2 sprays in the last week of April and August which was non-significant with KNO3 with an additional spray in the last week of May. The findings signify the importance of K spray in improving yield and yield parameters of sweet orange under semi-arid climatic conditions of north western India.

Hydrothermic Treatment Effects on Some Ripening Changes on Mango Fruits (Mangifera indica L) `Crillo de Bocado' during Storage: II. Chemical Parameters

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 520e-520
Author(s):  
Juan E Manzano ◽  
Oswaldo Valor
Keyword(s):  
Low Temperature ◽  
Storage Time ◽  
Storage Temperature ◽  
Mangifera Indica ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Chemical Parameters ◽  
Randomized Design ◽  
Solids Content ◽  
Green Stage

Mango fruits `Criollo de Bocado' harvested at the mature-green stage were treated with a hydrothermic treatment of 55 °C for 3 min and stored for 20 days at temperatures of 10 ± 2, 15 ± 2 and 28 ± 2 °C. A randomized design 2 × 3 × 4 with three replications was used. Some chemical parameters were analyzed, such as total soluble solids content (% TSS), pH, tritatable acidity, and TSS/tritatable acidity ratio. TSS content increased with storage time at low temperature. The pH increased measurably with storage temperature, while tritatable acidity values results had inconsistent data.

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