ASSESSMENT OF KELP EXTRACT BIOSTIMULANTS ON TREE GROWTH, YIELD, AND FRUIT QUALITY IN A CERTIFIED ORGANIC APPLE ORCHARD

2013 ◽  
pp. 191-198 ◽  
Author(s):  
T.L. Bradshaw ◽  
L.P. Berkett ◽  
M.C. Griffith ◽  
S.L. Kingsley-Richards ◽  
H.M. Darby ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Tree Growth ◽  
Growth Yield ◽  
Apple Orchard ◽  
Certified Organic ◽  
Kelp Extract

scholarly journals Irrigation and Rootstock Influence on Water Use, Tree Growth, Yield, and Fruit Quality at Harvest at Different Ages of Trees in ‘Pacific Gala’ Apple

HortScience ◽  
2013 ◽  
Vol 48 (5) ◽  
pp. 588-593 ◽  
Author(s):  
Esmaeil Fallahi ◽  
Bahar Fallahi ◽  
Bahman Shafii
Keyword(s):  
Water Use ◽  
Fruit Quality ◽  
Tree Growth ◽  
Growth Yield ◽  
Irrigation Scheduling ◽  
Fruit Weight ◽  
Tree Canopy ◽  
Soluble Solids ◽  
Starch Degradation ◽  
Yield Efficiency

During various ages of tree between 2002 and 2007, the effects of four rootstocks and two irrigation systems using a crop evapotranspiration-based (ETc) water scheduling on water use, tree growth, yield, and fruit quality at harvest in ‘Pacific Gala’ apple [(Malus ×domestica) Borkh] were studied. The use of ETc when a precise crop coefficient value (Kc), modified by percentage of ground shade (GS) and tree canopy maturity (M) was used, provided a reliable tool for irrigation scheduling of ‘Pacific Gala’ apple. Young trees with a full sprinkler (FS) system received an average of 872.3 mm (5616.8 L/tree), whereas those with full drip (FD) received 448.9 mm (2921.1 L/tree). However, when trees were mature, trees with a FS system received an average of 994 mm (6461.7 L/tree), whereas trees with a FD received 614.1 mm (3996 L/tree) of irrigation water per growing season. Trees on ‘Budagovsky 9’ (‘B.9’) had smaller trunk cross-sectional area (TCA) and higher yield efficiency, whereas those on ‘Supporter4’ (‘Sup.4’) had larger TCA and lower yield efficiency than those on other rootstocks in all years of the study. Trees on ‘Nic.9’ (‘RN29’) always had higher yield per tree as compared with those on other rootstocks. Trees on ‘RN29’ often had higher but trees on ‘B.9’ had lower fruit weight than did those on other rootstocks. Trees on ‘Sup.4’, despite their lower yields, had smaller fruits than those on ‘RN29’ every year and thus were not suitable for planting. Fruit from trees on ‘B.9’ and ‘Cornell-Geneva30’ (‘G.30’) often had higher soluble solids concentration (SSC) and starch degradation pattern (SDP) than those other rootstocks. Fruits from trees on ‘G.30’ also had lower firmness and higher stem-end cracking, suggesting that this rootstock advances maturity in ‘Pacific Gala’ apple. Trees with FS irrigation had higher TCA than those with the FD system. Trees with the FD system were more precocious and had higher yield per tree, yield efficiency, and fruit weight than trees with the FS system when they were young. However, these differences were not significant when trees matured. ‘Pacific Gala’ fruit from trees with FS consistently had better color than those with the FD system every year. Fruits from young trees with the FD system often had higher SDP and lower firmness than those from FS irrigation.

scholarly journals Floor Management Systems in an Organic Apple Orchard Affect Fruit Quality and Storage Life

HortScience ◽  
2015 ◽  
Vol 50 (3) ◽  
pp. 434-441 ◽  
Author(s):  
Ibrahim I. Tahir ◽  
Sven-Erik Svensson ◽  
David Hansson
Keyword(s):  
Acetic Acid ◽  
Soil Respiration ◽  
Fruit Quality ◽  
Tree Growth ◽  
Apple Orchard ◽  
Weed Suppression ◽  
Management Systems ◽  
Soil Conditions ◽  
Yield Reduction ◽  
Sandwich System

In an organic apple orchard, standard mechanical cultivation was compared with four different orchard floor management systems (OFMS): acetic acid (V), living mulch (L), a sandwich system during the growing season (SSS), and a sandwich system during the whole year (SSW). The effects of these OFMS on weed management, soil conditions, tree growth, tree yield, fruit quality, and fruit storage potential in a cool climate were evaluated. Acetic acid treatment showed good weed suppression without any amendatory effect on soil conditions, fruit quality, or tree performance. The L and SSS systems increased soil respiration, decreased tree vigor, and improved fruit quality, but had no sufficient influence on weed competition and thus decreased fruit yield. Only SSW gave better weed control, higher soil respiration, and acceptable tree growth with no yield reduction. Fruit from this system also showed better quality at harvest than fruit from other OFMS and maintained this good quality during storage. A 6-week weed-free period from late May to mid-July gave the highest apple yield in two OFMS (SSW and V).

ASSESSMENT OF KELP EXTRACT BIOSTIMULANTS ON DISEASE INCIDENCE AND DAMAGE IN A CERTIFIED ORGANIC APPLE ORCHARD

2013 ◽  
pp. 265-271
Author(s):  
T.L. Bradshaw ◽  
L.P. Berkett ◽  
M.C. Griffith ◽  
S.L. Kingsley-Richards ◽  
H.M. Darby ◽  
...  
Keyword(s):  
Disease Incidence ◽  
Apple Orchard ◽  
Certified Organic ◽  
Kelp Extract

Citrus Production Guide: Rootstock and Scion Selection

EDIS ◽  
2017 ◽  
Vol 2017 (5) ◽  
Author(s):  
Ute Albrecht ◽  
Fernando Alferez ◽  
Mongi Zekri
Keyword(s):  
Fruit Quality ◽  
Tree Growth ◽  
Fruit Size ◽  
Growth Yield ◽  
Soil Characteristics ◽  
Juice Quality ◽  
Economic Returns ◽  
Pests And Diseases ◽  
Citrus Production ◽  
The Right

When preparing for replanting, an important factor to consider is the choice of rootstock. Choosing the right rootstock and scion combination can result in higher economic returns without any additional cost. Rootstocks affect scion vigor, yield, fruit size, juice quality, and pest tolerance. However, tree growth, yield, and fruit quality interact strongly with climate, soil type, tree spacing, and other factors, often producing contradictory reports on rootstock performance in different areas. This 3-page fact sheet discusses soil characteristics, rootstock effects on pests and diseases, tree spacing and size, and rootstock/scion combination. Written by Ute Albrecht, Fernando Alferez, and Mongi Zekri, and published by the UF/IFAS Department of Horticultural Sciences, September 2017.

EFFECTS OF FOLIAR FERTILIZERS ON ABSCISSION, FRUIT QUALITY AND TREE GROWTH IN AN INTEGRATED APPLE ORCHARD.

1997 ◽  
pp. 43-50
Author(s):  
L. Bertschinger ◽  
U. Henauer ◽  
L. Lemmenmeier ◽  
W. Stadler ◽  
R. Schumacher
Keyword(s):  
Fruit Quality ◽  
Tree Growth ◽  
Apple Orchard
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