scholarly journals Evaluation of German Plum Selections in Latvia

2017 ◽  
Vol 71 (3) ◽  
pp. 166-172 ◽  
Author(s):  
Ilze Grāvīte ◽  
Edīte Kaufmane
Keyword(s):  
Fruit Weight ◽  
Soluble Solids ◽  
Fertility Level ◽  
Cumulative Yield ◽  
State Institute ◽  
Prunus Cerasifera ◽  
German Origin ◽  
Fruit Growing ◽  
Beginning Of Flowering ◽  
Research Period

Abstract The aim of the study was to determine the suitability of growing plum cultivars and hybrids of German origin in Latvian conditions. In the trial the plum cultivars and hybrids were planted at the Latvia State Institute of Fruit Growing (now, Institute of Horticulture) in spring 2008. Six W. Hartmann genotypes (cultivars ‘Tipala’, ‘Tegera’ and ‘Haganta’, and hybrids H-5102, H-3753, and H-3690) from Hohenheim University were included in the study. Prunus cerasifera was used as rootstock. The parameters evaluated were: beginning of flowering, ripening time, average yield (kg per tree), cumulative yield (kg), and average fruit weight from 2012 to 2016, and content of soluble solids from 2014 to 2016. In addition, self-fertility was evaluated in 2015 and 2016 for three cultivars and one hybrid. The winter of 2010/2011 was unfavourable, as plum orchards and most plum cultivars in Latvia suffered winter damage, but cultivars and hybrids in the trial were without damages. Significant damages were not observed in further years. Average flowering time in the four-year period for all cultivars and hybrids was the 1st or 2nd decade of May, harvest time was from the 1st decade of August to the 3rd decade of September. The earliest was hybrid H-3690, and the latest was cv.’Haganta’. The most productive was hybrid H-3690, which gave 42 kg in the 3rd year of yield and had the most rapid rise in yields. ‘Haganta’ had the biggest fruits (50 to 60 g) and highest content of soluble solids (17-18 Brix%). Self-fertility level was 40% for ‘Tegera’, 17.4% for ‘Haganta’, 14.5% for H-3690 and 0% for ‘Tipala’. Evaluation of all analysed parameters showed that ‘Tegera’ could be recommended for Latvian growers thanks to good winter hardiness in the research period. ‘Haganta’ is recommended only for warmer regions in Latvia. Hybrid H-3690 will potentially be useful for Latvian growers.

scholarly journals Influence of Different Training Systems on the Beginning of Domestic Plum Production and Yield

2019 ◽  
Vol 73 (3) ◽  
pp. 244-251
Author(s):  
Ilze Grāvīte ◽  
Edīte Kaufmane ◽  
Laila Ikase ◽  
Edgars Cirša
Keyword(s):  
Fruit Size ◽  
Fruit Weight ◽  
Training System ◽  
State Institute ◽  
Training Systems ◽  
Prunus Cerasifera ◽  
Cross Section Area ◽  
Section Area ◽  
Two Systems ◽  
Fruit Growing

Abstract All growers prefer to obtain a first harvest as soon as possible. The aim of this study was to identify an effective tree training system for new Latvian plum cultivars, which provides the highest yield and fruit quality. The trial was established in 2012 at the Institute of Horticulture (formerly Latvia State Institute of Fruit-Growing) and included cultivars ‘Ance’, ‘Adelyn’, and ‘Sonora’; and the controls ‘Victoria’ and ‘Jubileum’. Planting distances were 4 × 2.5 m, and the rootstock was Prunus cerasifera. Tree training was done using four systems: two systems with branch bending (Heka espalier and spindle); and two systems without bending (standard (round) and flat crown). Evaluation of average fruit weight and yield per trunk cross section area (TCSA) was done from 2015 to 2017. The Heka espalier and spindle systems had first yield in 2015, but systems without bending had first yield only in 2016. Average yield per TCSA was significantly higher for the Heka espalier system (0.49 kg·cm−2) than for the spindle system (0.24 kg·cm−2), standard crown system (0.17 kg·cm−2), and flat crown system (0.30 kg·cm−2). Cultivar ‘Victoria’ had the highest yield among all systems. Average fruit size showed the same results: the biggest fruits were obtained with the Heka espalier system, and the smallest for systems without bending in the standard crown.

In-row Vegetation-free Strip Width Effect on Established ‘Navaho’ Blackberry

2017 ◽  
Vol 32 (1) ◽  
pp. 85-89 ◽  
Author(s):  
Nicholas T. Basinger ◽  
Katherine M. Jennings ◽  
David W. Monks ◽  
Wayne E. Mitchem ◽  
Penelope M. Perkins-Veazie ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Growth Yield ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Strip Width ◽  
Soluble Solids ◽  
Cumulative Yield ◽  
Current Recommendation ◽  
Berry Weight ◽  
Berry Quality

AbstractA field study was conducted in 2014 and 2015 in an established 5-yr old commercial blackberry planting to determine the effect of vegetation-free strip width (VFSW) on ‘Navaho’ blackberry vegetative growth, yield and fruit quality parameters, identify the optimum VFSW for blackberry plantings in the southeastern USA, and provide practical groundcover management recommendations that can increase the productivity of blackberry plantings. In Fall 2013, tall fescue was seeded in-row and allowed to establish. In Spring 2014, VFSW treatments (0, 0.6, 0.9, 1.2, and 1.8 m) were established in a randomized complete block statistical design with four replications. Blackberry growth measurements included primocane and floricane number, cane diam, individual fruit weight and yield. Fruit quality measurements included, soluble solids concentration (SSC), titratable acidity (TA) and pH. Primocane number increased with increasing VFSW in both years. Floricane number increased with increasing VFSW in 2014. Primocane diam decreased with increasing VFSW in 2014 but had a quadratic response in 2015. Berry weight and cumulative yield increased with increasing VFSW in both years. The only berry quality component affected by VFSW was pH, which decreased as VFSW increased. Results indicate that widening the VFSW in blackberry from the current recommendation of 1.2 m to 1.8 m could provide growers a means to increase plant growth, berry weight, and cumulative yield blackberry of a planting.

scholarly journals Tree Growth and Productivity and Postharvest Fruit Quality in Various Strains of `Delicious' Apple

1994 ◽  
Vol 119 (3) ◽  
pp. 389-395 ◽  
Author(s):  
Esmaeil Fallahi ◽  
Brenda R. Simons ◽  
John K. Fellman ◽  
Mark A. Longstroth ◽  
W. Michael Colt ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Skin Color ◽  
Growth Yield ◽  
Quality Parameters ◽  
Fruit Weight ◽  
Climatic Conditions ◽  
Soluble Solids ◽  
High Yield ◽  
Cumulative Yield ◽  
Cross Sectional

Twenty-six strains of `Delicious' apple (Malus domestica Borkh.) were evaluated over several years for growth, yield, and fruit quality at harvest and after 6 months of storage. `August Red', `Rose Red', and `Sharp Red' had larger trunk cross-sectional area (TCSA) 3 and 18 years after planting compared to most other strains. `August Red' and `Starking' had larger TCSA and cumulative yield. `Apex,' `Improved Ryan Spur', `Silverspur', `Starkrimson', and `Wellspur' were also among strains with high cumulative yields and yield efficiencies. `Hardi-Brite Spur' and `Red King Oregon Spur' had moderately high yields and small TCSAs, thus, high yield efficiencies. `Atwood', `Hardispur', `Imperial', `Improved Ryanred', `Starkspur Supreme', and `Topred' had low cumulative yields. `Ace' and `Improved Ryanred' had low yield efficiencies. `Ace', `Imperial', `Red King Oregon Spur', `Rose Red', `Starking', and `Wellspur' had heavier fruit, while fruit weight in `August Red', `Hardispur', and `Starkrimson' was lighter than that in most other strains. `Redspur' and `Starkspur Supreme' had the largest length to diameter (L/D) ratios. `Early Red One' had a similar red skin color rating as `Rose Red.' The red skin color rating of `Early Red One' was significantly higher than that of all other strains. `Hi-Early', `Improved Ryanred', `Redspur', and `Starking' had the poorest skin color ratings. `Hardispur', `Nured Royal', `Silverspur', and `Starkrimson' had high soluble solids concentrations (SSCs) at harvest and after storage. `Early Red One', `Imperial', `Improved Ryan Spur', and `Red King Oregon Spur' had lower SSCs at harvest and after storage. Fruit of `Apex' and `Redspur' had relatively high firmness at harvest, while `Hardispur', `Silverspur', `Starkrimson', and `Starkspur Supreme' had firm fruit at harvest and after storage. `Hardi-Brite Spur' had the softest fruit after storage, and fruit from `Rose Red' had a lower firmness than most other strains at harvest and after storage. Considering cumulative yield, yield efficiency, or some quality parameters, `Apex', `Classic Red', `Improved Ryan Spur', `Red King Oregon Spur', `Silverspur', and `Wellspur' had satisfactory overall performance. Strains are also suggested for planting depending on the market situation and the demand for a particular quality factor. `Hardispur' and `Sturdeespur' (Miller) are not recommended for planting under climatic conditions similar to those of this experiment.

scholarly journals Impact of boron foliar fertilization on annual fluctuation of B in sweet cherry leaves and fruit quality

2008 ◽  
Vol 14 (3) ◽  
Author(s):  
P. T. Nagy ◽  
T. Thurzó ◽  
Z. Szabó ◽  
J. Nyéki
Keyword(s):  
Fruit Quality ◽  
Sweet Cherry ◽  
Prunus Avium ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Annual Fluctuation ◽  
Sweet Cherries ◽  
Prunus Mahaleb ◽  
Leaf Tissues ◽  
Beginning Of Flowering

The goal of the study was to examine response of sweet cherries (Prunus avium L.) to boron (B) fertilization. The experiment was conducted during 2005-2007 in West Hungary on mature cv. `Germersdorfi 3' grafted on Prunus mahaleb rootstock. Sweet cherry trees planted on a calcareous chernozem soil. Trees were foliar-fertilized with B. Foliar B sprays were performed: (1) in the spring, at the stage of white bud, beginning of flowering (B1), and (2) repeated 5 weeks after full bloom (B2). In each of spring spray treatments, B was applied at a rate of 0.15 kg ha-I. Trees untreated with B served as a control. The results showed that B fertilization had effect on B concentration in leaf tissues, mostly after ripening. B was present significantly higher amount in leaf in treated samples after ripening. Mean fruit weight was slightly increased by B fertilization. Fruit sensitivity to cracking was not influenced by B fertilization. Nevertheless, from our data it can be conclude that the sensitivity of fruit to cracking is improved when the fruit is riper, the fruit density and fruit weight are higher. The soluble solids varied between 15.0 and 15.9% according to the treatments. Our results for the monosaccharides investigated varied between 5.1 and 7.2 as glucose and fructose as well. Galactose and sucrose was detected very small amount in the unprocessed cherries. Applied B treatments increased sugar contents but decreased organic acid contents in sweet cherry fruits. It is concluded that under conditions of this experiment, B fertilization can be recommended in sweet cherry culture to improve fruit quality and their appearance.

scholarly journals PRELIMINARY RESULTS REGARDING THE FRUIT QUALITY AND YIELD OF SOME BLUEBERRY GENOTYPES

2021 ◽  
Vol 10 (20) ◽  
pp. 79-84
Author(s):  
Oana Hera ◽  
Monica Sturzeanu ◽  
Răzvan Teodorescu
Keyword(s):  
Titratable Acidity ◽  
Vaccinium Corymbosum ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Fruit Characteristics ◽  
High Productivity ◽  
Small Fruit ◽  
Total Titratable Acidity ◽  
Fruit Growing ◽  
Fruit Diameter

Vaccinium corymbosum is one of the berry species with economic and food interest to Romanian growers and consumers. The development of blueberrty crop is a result of breeding activity, which has generated many cultivars of quality fruit and high productivity. The characters that are of economic interest in the cultivation of blueberries depend on the area of cultivation where the new cultivars are obtained. The study was conducted in summer 2020 in an experimental plot established in 2015 with seven blueberry genotypes, at Research Institute for Fruit Growing, Pitesti, Romania in the Small Fruit Laboratory, having an experience in the field of more than 40 years. The objective at this study is to compare some of fruit characteristics from genotypes 'Azur', 'Delicia', 'Duke', 'Northblue', 'Simultan', '4/6' and '6/38': plant yield, average fruit weight, fruit length, fruit diameter, the soluble solids, fruit acidity or pH, fruit firmness. During this study 'Delicia' cv. proved to have the highest production per plant (4.20 kg plant), the highest values of fruit diameter (19.70 mm), and the highest value of fruit total titratable acidity (01.25 %).

scholarly journals Plum Cultivar Evaluation on Myrobalan Rootstock in Lithuania

2019 ◽  
Vol 73 (3) ◽  
pp. 232-237 ◽  
Author(s):  
Juozas Lanauskas ◽  
Darius Kviklys ◽  
Nobertas Uselis ◽  
Loreta Buskienė
Keyword(s):  
Soluble Solids ◽  
Research Centre ◽  
Soluble Solids Content ◽  
Cumulative Yield ◽  
Trunk Diameter ◽  
Orchard Floor Management ◽  
Flesh Firmness ◽  
Prunus Cerasifera ◽  
Queen Victoria ◽  
Solids Content

Abstract Twenty plum cultivars on Myrobalan (Prunus cerasifera Ehrh.) seedling rootstock were tested in 2012–2017 at the Institute of Horticulture of the Lithuanian Research Centre for Agriculture and Forestry. Plum trees were spaced at 4.5 × 2.5 m and trained as spindles. Orchard floor management included frequent mowing of grass in the alleyways with herbicide strips along tree rows. ‘Duke of Edinburgh’, ‘Kijevas Vēlā’, ‘Dąbrowicka Prune’, ‘Čačanska Najbolje’, ‘and ‘Štaro Vengrinė’ cultivars were the most vigorous plum trees at the end of 6th year. Their trunk diameter achieved 92–96 mm. ‘Valor’, ‘Queen Victoria’, ‘Herman’, ‘Čačanska Najbolje’, ‘Favorita del Sultano’, ‘Ave’, and ‘Jubileum’ cultivars had the lowest trunk diameter — 72–78 mm. The highest cumulative yield of four fruiting years was recorded for ‘Kometa’ and ‘Violeta’ cultivars, respectively, 43.0 and 46.5 kg/tree. ‘Favorita del Sultano’, ‘Rausvė’, and ‘Kijevas Vēlā’ produced the largest fruits — 52–60 g. The smallest fruit occurred on ‘Dąbrowicka Prune’ and ‘Herman’ cultivars, respectively, 22 and 25 g. ‘Dąbrowicka Prune’ had the highest soluble solids content (SSC) — 19.5%. The least SSC was recorded in ‘Kometa’, ‘Violeta’ and ‘Herman’ fruits — 10.6–11.8%. ‘Renklod Rannij Doneckij’, ‘Čačanska Najbolje’, and ‘Valor’ cultivars had the highest fruit flesh firmness.

scholarly journals Response of young apricot trees to natural zeolite, organic and inorganic fertilizers

2012 ◽  
Vol 59 (No. 1) ◽  
pp. 44-49 ◽  
Author(s):  
T. Milošević ◽  
N. Milošević
Keyword(s):  
Natural Zeolite ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Cumulative Yield ◽  
Calcium Ammonium Nitrate ◽  
Total Sugars ◽  
Yield Efficiency ◽  
The Impact ◽  
Organic And Inorganic Fertilizers

The study focused on characterizing five apricot cultivars to acknowledge the impact of natural zeolite (Agrozel type), cattle manure, composite NPK (15-15-15) and calcium ammonium nitrate (CAN) on tree vigour, precocity, yield performance and fruit quality attributes. The results showed that Agrozel induced the highest tree growth in all cultivars, yield and cumulative yield in Vera, Harcot and Roxana and yield efficiency in Aleksandar, Vera and Roxana. The higher fruit weight of all cultivars was found after the manure application. Composite NPK plays a major role in soluble solids, total sugars and titratable acidity accumulation, whereas CAN and Agrozel applications resulted in a higher soluble solids/titratable acidity ratio and flesh firmness in most of the cultivars.

scholarly journals INFLUENCE OF CULTIVAR AND FERTILIZATION WITH VERMICOMPOST ON FRUIT QUALITY AND YIELD IN LONICERA SPP.

2021 ◽  
Vol 10 (19) ◽  
pp. 71-79
Author(s):  
Ivona Enescu (Mazilu) ◽  
Mirela Călinescu ◽  
Emil Chitu ◽  
Mădălina Butac ◽  
Monica Sturzeanu ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Organic Fertilizer ◽  
Fruit Production ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Lonicera Caerulea ◽  
Highest Weight ◽  
Cielab System ◽  
Fruit Growing ◽  
Solids Content

This paper aims to study the influence of cultivar and vermicompost (organic fertilizer) treatments on fruit quality traits (fruit weight, flesh firmness, juice pH, chromatic coordinates in CIELab system, chlorophyll fluorescence) and plant productivity on Lonicera caerulea L. The experiment was carried out between 2019 and 2020, at the Research Institute for Fruit Growing Pitesti, Romania. To achieve these, three honeysuckle cultivars ('Cera', 'Loni', and 'Kami') were treated with four fertilizer doses: 0.2, 0.3, 0.75, and 1.0 L per plant. We found that 'Cera' cultivar was characterized by fruits with the highest weight (0.67 g) and firmness (13.71 units Bareiss HPE-II-FFF), 'Kami' cultivar, had the highest total soluble solids content (17.09 °Brix), and 'Loni' was the most productive (33.33 g per plant). Compared to untreated plants, fertilization with vermicompost in a dose of 0.2 L per plant increased fruit weight by 14.81%, pH by 9.79%, and fruit production per plant by 36.65%, indicating that fertilization with vermicompost could be used in ecological honeysuckle culture technology.

scholarly journals Pomological and technological characteristics of collected selections of cherry plum Prunus cerasifera Erhr.

Genetika ◽  
2005 ◽  
Vol 37 (1) ◽  
pp. 39-47 ◽  
Author(s):  
Rade Miletic ◽  
Mihajlo Zikic ◽  
Nevena Mitic ◽  
Radomirka Nikolic
Keyword(s):  
Fruit Trees ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Prunus Cerasifera ◽  
Commercial Cultivation ◽  
Length Width ◽  
Set Up ◽  
Solids Content ◽  
Stone Characteristics ◽  
Initial Objective

A plantation collection containing 32 genotypes selected from spontaneous populations of cherry plum Prunus cerasifera Erhr. was set up in the region of the Eastern Serbian town of Svrljig. The fruit trees budded from Prunus cerasifera seedlings and were planted at 5x4 m spacing on a mild slope of south-western aspect. This study shows the most important characteristics of the 19 selections in the collection, and the average results recorded in the 2000-2003 period. The most significant characteristics of the trees, their productivity, and fruit and stone characteristics are presented. The average coarseness of fruits, i.e. their length, width and thickness, measured 25.0x 24.4x25.0 mm, while stone coarseness was 14.4x10.3x3.6 mm. The average fruit weight was 12.1 g (24.3-4.8 g), and stone weight 0.85 g (2.2-0.3 g). Depending on fruit and stone weight, the mesocarp content was 93% (96.3-90.3%). Taking into consideration the possibility of fruit exploitation for the production of biologically high-quality food, the mesocarp chemical composition was thoroughly examined. The fruits were found to have increased contents of total acids, achieving an average of 3.09% (3.44-2.60%), which was the initial objective of this selection. Total solids content was 13.5% (16.2-10.3%), total soluble solids 12.5% (14.5-9.5%) and total sugars 6.00% (11.45-3.14%). Considering these characteristics, the selections that were singled out deserve more attention in terms of preserving their biodiversity, forming a gene bank and commercial cultivation.

Evaluasi Keragaan Beberapa Hibrida Semangka Koleksi Balai Penelitian Tanaman Buah Tropika

2019 ◽  
Vol 15 (2) ◽  
pp. 101-105
Author(s):  
Makful Makful ◽  
Kuswandi Kuswandi ◽  
Sahlan Sahlan ◽  
Mega Andini
Keyword(s):  
Skin Color ◽  
Sweet Taste ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Hybrid Breeding ◽  
Skin Thickness ◽  
Tropical Fruit ◽  
Total Soluble Solids ◽  
Soluble Solid ◽  
High Yielding Varieties

Hybrid breeding of watermelon has led to the formation of high-yielding varieties. The objectives of the research were to determine the performance of hybrid watermelon of the Indonesian Tropical Fruit Research Institute (ITFRI) collection and to evaluate the superiority of each hybrid. The research has been conducted at Sumani Experimental Garden, ITFRI, Solok, West Sumatera, from April to July 2016. The material used consisted of 19 cross combinations. The data from this descriptive study were presented in the form of averages and pictures. The results showed that the hybrids that were tested showed diversity in size, fruit skin color, flesh color, skin thickness and fruit sweetness. Hybrids with three excellent characters, i.e. medium fruit weight, high total soluble solids (TSS) value, and moderate rind thickness, were not yet obtained. Hybrids that had the superiority in term of sweet taste and shelf life were BT1 × SGP, BT4 × BT4P, BT5 × BT4, BT6 × SGP and SGP × BT6. Keywords: hybrid, performance, total soluble solids, watermelon   ABSTRAK Pemuliaan hibrida pada semangka mengarah kepada pembentukan varietas berdaya hasil tinggi. Penelitian bertujuan untuk mengetahui keragaan hibrida semangka koleksi Balitbu Tropika dan untuk mengevaluasi keunggulan masing-masing hibrida Penelitian dilaksanakan di Kebun Percobaan Sumani, Balitbu Tropika, Solok, Sumatera Barat, dari bulan April sampai dengan Juli 2016. Materi yang digunakan terdiri dari 19 kombinasi persilangan. Data hasil penelitian deskriptif ini ditampilkan dalam bentuk rataan dan gambar. Hasil penelitian menunjukkan bahwa hibrida yang diuji memiliki keragaman dalam ukuran, warna kulit buah, warna daging buah, ketebalan kulit buah dan kemanisan. Belum ditemukan hibrida yang memiliki tiga karakter unggul, yang terdiri dari bobot buah sedang, total padatan terlarut (total soluble solid) tinggi, dan kulit buah agak tebal. Hibrida yang memiliki keunggulan berupa rasa manis dan tahan simpan adalah BT1 × SGP, BT4 × BT4P, BT5 × BT4, BT6 × SGP dan SGP × BT6. Kata kunci: hibrida, keragaan, semangka, total padatan terlarut

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