scholarly journals Evaluation of some dwarf apple rootstocks

2012 ◽  
Vol 29 (No. 1) ◽  
pp. 23-25 ◽  
Author(s):  
J. Kosina
Keyword(s):  
Cross Section ◽  
Tree Size ◽  
Apple Rootstocks ◽  
Cumulative Yield ◽  
Yield Efficiency ◽  
Cross Section Area ◽  
Section Area ◽  
Golden Delicious ◽  
Good Productivity

Dwarf apple rootstocks M 9, M 27, Pajam 1, Pajam 2, Jork 9, J-TE-E, J-TE-F, J-TE-G and J-OH-A were evaluated in a trial conducted in an experimental orchard with cultivars Golden Delicious, Gloster and Melrose. The experimental plantation was established in 1990. Data on: yield (kg/tree), yield efficiency (kg/cm2), trunk cross-section area and suckering were recorded during the period 1991–2000. The cumulative yield per tree was highest on Jork 9 and Pajam 2. Trees on Pajam 1 and M 9 also had good productivity. Yield efficiency was highest on Jork 9, followed by M 27 and J-TE-G. Trees on Pajam 2 were most vigorous. The tree size on M 9 was similar like on Pajam 1. Trees on J-TE-E and J-TE-F grew less than those on M 9. The weakest growth was observed on rootstocks M 27 and J-TE-G. Among the tested rootstocks, J-OH-A produced the highest number of suckers. Suckering was more intensive with Melrose followed by Gloster and Golden Delicious.

scholarly journals Characterization of the Kentville Stock Clone Apple Rootstocks. I. Growth and Efficiency

1993 ◽  
Vol 118 (2) ◽  
pp. 170-172 ◽  
Author(s):  
C.G. Embree ◽  
B.H. Lesser ◽  
A.D. Crowe
Keyword(s):  
Cross Section ◽  
Malus Domestica ◽  
Cold Hardiness ◽  
Tree Size ◽  
Apple Rootstocks ◽  
Cumulative Yield ◽  
Cross Section Area ◽  
Section Area ◽  
Highly Correlated

The 30 apple (Malus domestica Borkh.) rootstock candidates selected for cold hardiness, known as the Kentville Stock Clone (KSC), with `McIntosh' and `Delicious' as scion cultivars, were compared at 11 years of age for tree size, weight, fruit yield, and crop efficiency under field conditions. Trunk cross-section area and tree weight were highly correlated. Tree size was similar for the two cultivars in most cases and ranged in size from semidwarf to very vigorous. Cumulative yield efficiencies varied by nearly two-fold and were not correlated with tree size. The most efficient rootstocks were KSC 28, KSC 7, and KSC 6 in the semidwarf, semivigorous, and vigorous size classifications, respectively.

scholarly journals GROWTH AND FRUIT PRODUCTION OF YOUNG MICROPROPAGATED APPLE (MALUS DOMESTICA BORKH.) TREES

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 637f-637
Author(s):  
Fenton E. Larsen ◽  
Stewart S. Higgins
Keyword(s):  
Malus Domestica ◽  
Fruit Production ◽  
Tree Size ◽  
Sectional Area ◽  
Cumulative Yield ◽  
Cross Sectional ◽  
Malus Domestica Borkh ◽  
Yield Efficiency ◽  
Westerly Winds ◽  
Golden Delicious

Tree size, cumulative yield, yield efficiency and anchorage of 6 micropropagated (MP) apple (Malus domestica Borkh.) cultivars were determined in 1991 after 5 years of production, as compared with trees on seedling (sdlg) or M 7a roots. Trees were planted in 1984, with crops harvested from 1987 through 1991. Trees were generally smallest (trunk cross-sectional area) on M 7a and were largest with 4 cultivars (`Delicious', `Jonathan', `Rome', `Spartan') when micropropagated. `Golden Delicious' (GD) was largest on sdlg. Cumulative yield was affected by a scion × rootstock interaction, with few trends in scion or rootstock effects. Mean cumulative yield was 84 kg tree-1, 71 and 58 for M 7a, MP and sdlg, respectively. Yield efficiency was also affected by a scion × rootstock interaction. In 1991, mean yield efficiency was 0.5 kg cm-2 for sdlg and MP trees, but was 1.05 for M 7a. Efficiency on M 7a was superior to other rootstocks with all scions except `GD', while sdlg and MP trees were statistically similar with all scions. All trees leaned in response to prevailing westerly winds, with trees on sdlg tending to be more upright than MP or M 7a trees.

scholarly journals Apple, Prebloom Evaluation of Insecticides, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 29-30
Author(s):  
Larry A. Hull
Keyword(s):  
Honey Bee ◽  
Cross Section ◽  
Fruit Set ◽  
High Rate ◽  
Experimental Plot ◽  
Early Season ◽  
Cross Section Area ◽  
Section Area ◽  
Golden Delicious ◽  
Plot Design

Abstract Two experimental and one registered insecticide were applied prebloom to evaluate their activity on a number of early season pests and to determine if honey bee activity at bloom was adversely affected. The experimental plot design was a RCB, with 5 insecticide treatments and a control, replicated 4 times. Plots consisted of 2-tree plots, 1 tree each of the cultivars ‘Yorking’ and ‘Golden Delicious’. The trees were planted at a spacing of 20 X 20 ft and were 22 yr old. Experimental sprays were applied with a Myers Mity Mist airblast sprayer calibrated to deliver 100 gpa at 2 mph. All treatments were applied at the pink stage (26 Apr) of ‘Golden Delicious’ development. A regular fungicide schedule (Dithane 75DF, Nova 40WP and Ziram 76WP) was maintained throughout the season. Post-bloom insecticides (Guthion 50WP) were applied at 1- to 2-wk intervals beginning at petal-fall in early May. Effectiveness of the sprays for RAA control was evaluated by counting the total number of RAA-injured clusters/tree and total number of injured apples per tree (both cvs) in a 5 min sample per tree for each variable. WALH was sampled by counting the number of nymphs present on 25 injured leaves per tree (cv ‘Yorking’). Also, 200 leaves per tree (cv ‘Yorking’) were randomly sampled for evidence of stippling caused by the feeding of WALH. Effectiveness of the test chemicals on the ERM was evaluated by counting the mites on samples of 25 random leaves/tree, 100 leaves/treatment. STLM was evaluated on 6 Jun by counting the number of tissue-feeding mines per 3 minutes around the periphery of the ‘Yorking’ tree/replicate. A sample of tissue-feeding mines was collected and the percentage of parasitized STLM determined. Honey bee sampling was conducted by making a number of 1-min examinations of each replicate tree during the blossom period. The number of blossoms on 2 tagged limbs per replicate tree was counted on 28 Apr and a measurement of limb cross-section area was taken. On 3 Jul, the number of apples that set on each tagged limb was counted. All insecticide treatments effectively controlled RAA with an application at the pink stage. WALH populations were lower on trees treated with BSN-2894. The high rate of BSN-2894 was more effective on STLM than Provado or Aphistar. None of treatments adversely affected honey bee activity during bloom or subsequent fruit set. Pest pressure was moderate.

scholarly journals Final evaluation of nine plum cultivars grafted onto two rootstocks in a trial established in 1998 at Holovousy

2012 ◽  
Vol 39 (No. 3) ◽  
pp. 108-115 ◽  
Author(s):  
J. Blažek ◽  
I. Pištěková
Keyword(s):  
Cross Section ◽  
Fruit Size ◽  
Performance Level ◽  
Final Evaluation ◽  
Yield Efficiency ◽  
Cross Section Area ◽  
Section Area ◽  
Tree Vigour

Nine plum cultivars newly introduced into production were evaluated in a replicated trial established in 1998 on two rootstocks planted in a spacing of 5 &times; 1.5 m. Trees were trained as spindles and evaluated regarding vigour, canopy performance, level and stability of yields, yield efficiency, fruit size, time of flowering and harvest season until 2010. Significant differences among cultivars were found but the most interesting were related to tree vigour, yield efficiency and fruit size. Dwarfing influence of Wangenheim seedling was negligible in Empress and Čačanska lepotica but mostly visible in Sanctus Hubertus. Wegierka Dabrowicka on both the rootstocks had the highest yield efficiency, exceeding 3 kg/m<sup>3</sup> of trunk cross-section area. Yield efficiency of trees grafted on Wangenheim was generally higher than those grafted on Myrobalan but the greatest difference was evidenced on Domestic Prune (more than 25%). Suggestions in terms of trees-spacing are definitively proposed upon results of this study.

scholarly journals Orchard performance of two plum cultivars on some clonal rootstocks

2011 ◽  
Vol 31 (No. 3) ◽  
pp. 93-95 ◽  
Author(s):  
J. Kosina
Keyword(s):  
Cross Section ◽  
Fruit Size ◽  
Yield Efficiency ◽  
Prunus Cerasifera ◽  
Cross Section Area ◽  
Section Area

A plum rootstock trial with Stanley and Cacanska najbolja cvs. was established in spring 1992. The following rootstocks were assessed: MY-BO-1, Myrobalan SE 4043 (both Prunus cerasifera), MY-KL-A (P. cerasifera &times; P. cerasifera var. atropurpurea), Marunke SE 4034 (Ackerman), St. Julien A, Brompton, GF 655/2, GF 1869, GF 1380, GF 43, Damascena SE 4045, Pixy and Myrobalan seedling. Yields, trunk cross-section area, number of suckers and mean fruit weights were evaluated in the orchard in 1993&ndash;2003. There were statistically significant differences in trunk cross-section area, yield and yield efficiency between the tested rootstocks. Trees of Stanley were the most vigorous on MY-KL-A, followed by GF 43, GF 1380 and Myrobalan seedling. The weakest growth was recorded on trees grafted on Pixy, then on GF 655/2 and MY-BO-1. With Cacanska najbolja the growth was the strongest on GF 43, followed by Myrobalan seedling, MY-KL-A and Myrobalan SE 4043. The most compact trees were on Pixy and then on GF 655/2 and Marunke SE 4034. The total accumulated yield per tree was the highest with Stanley on MY-KL-A, followed by Brompton and St. Julien A. The cultivar Cacanska najbolja was most productive on Myrobalan SE 4043 and also on St. Julien A. The yield efficiency with both cultivars was the highest on GF 655/2, and the lowest one on GF 1380 (Stanley) or on Myrobalan seedling (Cacanska najbolja). No statistically significant differences between the tested rootstocks were found in fruit size. Suckers were the most prolific on GF 1869, followed by GF 655/2 and Marunke SE 4034. Based on the hitherto experience, the best rootstocks for Stanley seem to be MY-KL-A and MY-BO-1 and for Cacanska najbolja Myrobalan SE 4043 and St. Julien A. &nbsp; &nbsp;

scholarly journals Evaluation Results of Finnish Apple Rootstocks in Latvia

2017 ◽  
Vol 71 (3) ◽  
pp. 132-136
Author(s):  
Laila Ikase ◽  
Edgars Rubauskis ◽  
Zanda Rezgale
Keyword(s):  
Cross Section ◽  
General Condition ◽  
Average Yield ◽  
Apple Rootstocks ◽  
Fruit Sample ◽  
Cross Section Area ◽  
Section Area ◽  
And Control ◽  
Fruit Mass ◽  
Root Suckers

AbstractA trial was established in 2011 with five rootstocks - MTT1, MTT4 and control B.9 (1.5 × 4 m, five replications with two trees), MTT5 and control MM.106 (2.5 × 5 m, six replications with two trees), and two cultivars - ‘Auksis’ and ‘Gita’. The evaluated parameters were: tree general condition, flowering, and yielding intensity (points), number of root suckers, average yield (kg·tree-1), yield per trunk cross section area (g·cm-2), average fruit mass (g), and amount of non-standard fruits (%). A randomised fruit sample from each cultivar-rootstock combination was put into storage, and a panel taste was performed once each season. A snowless winter occurred in 2013/2014, when soil froze to 1.5 m depth, which was critical for MM.106. Other rootstocks did not show injury. The best results were obtained for MTT4, which was similar to that of M.26 in Finland. Its vigour was similar to MM.106, and start of bearing to B.9. Rootstock MTT5 was initially grouped with medium vigour MM.106, as having 60-80 % of vigour of ‘Antonovka’ seedlings in Finland. Yet in our trial, it had vigour and start of bearing was similar to that of B.9 or slightly larger, depending on cultivar; it has a tendency to form root suckers. MTT1, ranged with B.9 in Finland, had too weak vigour. The most promising cultivar-rootstock combination was ‘Gita’ on MTT4.

scholarly journals Evaluation of Pear Rootstocks for the Cultivar ‘Suvenirs’ in the Baltic Region

2013 ◽  
Vol 67 (2) ◽  
pp. 145-150
Author(s):  
Jānis Lepsis ◽  
Līga Lepse ◽  
Darius Kviklys ◽  
Neeme Univer
Keyword(s):  
Survival Rate ◽  
Cross Section ◽  
Climatic Conditions ◽  
Winter Hardiness ◽  
Baltic Region ◽  
Cumulative Yield ◽  
Cross Section Area ◽  
Section Area ◽  
The Baltic

In 2001, investigations were carried out on the Latvian origin cultivar ‘Suvenîrs’ grafted on seven pear rootstocks (MA, MC, BA29, Pyrodwarf, Brokmal, Kirchensaller Mostbirne and Kazrauðu bumbiere) in Polli (Estonia), Pûre (Latvia) and Babtai (Lithuania). The aim of the investigation was to evaluate pear rootstocks in different climatic conditions in the Baltic region. In Polli, all trees were planted in a dense planting, and therefore, trunk cross section area did not differ significantly between trees on different rootstocks. The most vigorous tree habit was observed in Lithuania for trees grafted on the rootstocks Kirchensaller Mostbirne and Brokmal, but in Latvia on Kirchensaller Mostbirne and Kazrauðu bumbiere. The highest dwarfing effect was observed for rootstock MC in both places. The highest cumulative yield from the orchard area was found for trees grafted on rootstocks of the quince group in all three locations of investigation. Nevertheless, the winter hardiness of the quince group rootstocks was not sufficient for Baltic climatic conditions. Good overwintering in Latvia and Lithuania was observed for trees on Pyrodwarf. Survival rate of trees grafted on Pyrodwarf in Estonia was unsatisfactory. The worse overwintering in Lithuania was observed for trees grafted on Brokmal. There was a dwarfing effect on trees and better yield on the vegetative propagated rootstocks included in the investigation, but none one of them can be recommended as perspective for commercial orchards in Baltic agro-climatic conditions.

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