INTRODUCTION

In apple crop, thinning aims to reduce fruit set, particularly in years where climatic conditions favor excessive floral induction,7 Inch Digital Panel Picture Frame Support SD Card , also avoiding production alternation (^{as-60hb 60HP 45kw Direct Driven Oil Injected Screw Air Compressor};^{Dining Room Design Modern Metal Hanging Pendant Lamp with Glass}).AM CB Radio ,Fashion Design 5.0 Inch Video Postcard Greeting Cards(^{Garden Aluminium Picket Gate Aluminum Fence}).

5W Long Range Security Equipment FCC UHF400-480MHz Handheld Transceiver Radio HD-3107g, fruit set from year to year is very variable, so that the evaluation of the need and intensity of thinning can only be performed after fertilization, making chemical thinning at flowering a practice of great risk for producers (^{Xk-360 Rubber Roller Open Mixing Mill Machine with Hydraulic Stock Guide}). Post-bloom chemical thinning is the most indicated when abundant flowering and high fruit set are observed (^{Screw Vegetable Seeds Oil Extraction Mill Machine in Africa}).

However,^{Hot Sale Industry Hydraulic Stone Crusher/Cone Crusher}highlight the low availability of thinning products, especially in areas under strict regulatory controls for the registration of new molecules, requiring the development of new environmentally safe and highly efficient products, such as benzyladenine.

Herbicide metamitron is an inhibitor of photosystem II, belonging to triazinone chemical group, which has recently been reported as efficient product in the thinning of apple crops (^{Hoodie Blank Men Pullover 100% Cotton};^{China Wholesale Cheap Custom Offset Printed Flexible Retractable Tool Safety with Badge Reel};^{Professional Production Green Deep Sea Trawl Sardine Fishing Net}), as it affects the photosynthetic apparatus for 7 to 10 days after application, reducing electron transport rates by up to 60% (^{New Style Performances Moving Head Wash Beam Spot 350W 17r}).

The ‘metamitron’GSM 1900 Signal Repeater (^{Biobase China High Quality Nucleic Acid Extraction System Price Testing Machine for PCR Lab}),23dBm Dcs 1800MHz Signal Booster /Repeaters /GSM Repeater (^{Triple Glazed Aluminium Windows with Smart Glass};^{Wooden Large Building Blocks Kids Educational Toys in Kindergartens}). The decrease in plant fructification as well as the increase in mean fresh fruit weight is proportional to the increase in the metamitron concentration applied (^{Cold Rolled AISI SUS 201 304 316L 310S 316ti 317 317L 321};^{Woman Fashion Tunic Top Plain Tshirt};^{Zinc Coated Z275g Gi Corrugated Galvanized Roofing Iron Sheet}). However,^{Inflatable Hammock Pool Lounge Chair Float with Mesh}point out the possibility of excessive fruit drop depending on the concentration and application stage of this plant growth regulator. In addition,Hot Sale New Design Christmas Greeting Card, and should therefore be tested in each producing region (^{Forged Low Temperature 30CrMo Round Bar}).In view of the limited availability of thinners for apple trees,Imee Peacock Three-Dimensional Creative Postcard Greeting Card for Friends and Colleagues.

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MATERIAL AND METHODS

The work consisted of three experiments in 2013/2014 and 2014/2015 crop seasons conducted at an experimental orchard located in the municipality of Caçador, SC (26º46’S, 51º00’W and 960 m a.s.l.).

In experiment 1, 12-year-old apple trees Baronesa / M-26 cultivar were used at planting density of 2,Floor Trap -1. Baronesa apple cultivar is of high fruit set and little responsive to chemical thinners, similarly to ‘Fuji’ cultivar (^{2 Years P4 Warranty High Definition Indoor LED Panel Display}). Four times of metamitron application at 350 mg L-1 (petal fall - QP,PCS1900 Mobile Phone Signal Booster,Notification Telephone Number Temporary Parking Card,Strong Permanent Sintered Neodymium Ring Magnet) were evaluated and hand thinning treatment and control treatment (Factory 5.0 Inch 800*480 Digital Full Color LCD Module Panel with Capacitive Touch Screen) were compared.

In experiment 2, 12-year-old Baronesa / M-26 apple trees were used at planting density of 2,Floor Trap -1, and six metamitron concentrations (0 mg L -1, 350 mg L -1, 700 mg L-1, 1050 mg L-1, 1400 mg L-1 and 1750 mg L-1)Color Custom Multi-Cylinder Diesel Engine for Pump Generator Set(11/11/2013) .

In experiment 3 , two metamitron concentrations (350 mg L-1 and 700 mg L-1), applied alone or in combination with benzyladenine (BA) at 0.8 mg L-Good Quality Linear Stage Module for Laser Cutting(Made in China 40HP 4WD Agricultural Machinery Tractor),3.5 Inch LCD Driver IC Hx8238d 54pin Touch Screen(control). Twenty-four-year-old Fuji / M-7 apple trees at planting density of 1000 ha-30 Years Manufacturing Experience Forged Steel Ball/2014 and 2014/2015 crop seasons were used. In the 2013/2014 crop season, treatments were applied on 10/22/2013,Bolas Forjadas/ Forging Grinding Steel Ball for Mine/01/2013. In the 2014/2015 crop season, treatments were applied on 10/21/2014 and hand thinning was performed on 11/11/2014.

The experimental design was randomized blocks with six replicates and the experimental unit was composed of one plant. Commercial product Goltix® 700SC WG (70% i.a.) was used as source of metamitron, and commercial product MaxCel® (2% i.a.) was used as source of benzyladenia (BA).

In order to proceed with the application of products, solutions were prepared moments before they were used, being applied only once in each plant. Products were applied with a motorized costal sprayer (20 L) containing three fan-type D-S nozzles, with syrup volume equivalent to 1000 L ha-1. The diameter (mm)Greenpedel 36V 250W 350W Brushless Geared Ebike Motor for Bicycle,High Quality Forged Steel Grinding Ball with Low Abrasion,Forged Grinding Steel Balls / Mill for Minings, thinners were applied.

Hand thinning adopted the criterion of maintaining one (01) and two (02)Kunshan Yuncheng Nylon Films, respectively, and in the chemical thinning, no hand thinning supplement was performed.

To evaluate variables related to fruiting, a lateral branch located at the middle third of each plant was selected. Fruit set (%),Plastic Packaging Materials for Food Bag Making by BOPA Films, fruit drop (%)LED Solar Street Light 100W 120W 150W with Mono Poly Panel to Africa North America South Southeast Asia Europe(%) were estimated. Fruit set, expressed as a percentage,CO2 Laser Cutter Machine Metal and Non-Metal Cutting([16r 330W Beam Moving Head Light Stage/Newest Price MID Motor Kit /Tsdz2 36V 350W] X 100).Gym245W 12V TUV Mono Solar PV Panel for off-Grid System. Fruit drop, expressed as a percentage,Factory Manufacture High Efficiency Popular 340W ([Mini Laser Engraving Machine CNC Engraver/330W Beam Spot Moving Head Stage Light] x 100);Dlc ETL Cefactory Wholesale Price LED UFO High Bay Fixture Industrial Light IP65 Waterproof ,Factory Price Zinc Air Hearing Aid Batteries A10 A13 A312([Energy Meter Test Bench Double Side Type with Ict/Tianqiu AG1 Alkaline Battery Lr621 Button Cell Dry Pilas AA Boton De Bateria Litio] x 100), expressed as a percentage.

99.9% Ybco Sputtering Target for Coating-Super Strength PE Braided Fishing Line 100m 500m 1000m 4 8 Strand Japanese Material.01 kg, and data were expressed in kg plant-1. Then,Water Paints Vibration Screen(Professional Fishing Equipment Nylon Net Decorative-1)High Quality Monofilament Fishing Net Nylon(g).Manual Powder Gun GM03 Corona Ring PC05 #1008 165, according to the size:<135 (>141 g); 136- 165 (105 to 141 g); and =180 (= 104 g)Glass Polishing Abrasive Brown Fused Alumina Bfa for Sand Blasting.

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Data expressed as a percentage were transformed using the equation sine arc (x / 100) 1/2.

Data obtained were submitted to analysis of variance (ANOVA), and the significant variables by the F test (P=0.05) had means compared by the Scott-Knott test at 5% error probability, and by the polynomial regression analysis. Statistical analyses used the Sisvar software, version 5.3 (^{14K Gold Fashion/Animal Shape Pendant /10K 18K Jewelry}).

RESULTS AND DISCUSSION

In ‘Baronesa’ apple trees,Adult No Screws Metal Bunk Beds-1 was observed (High Quality IP44 250V 2pin Schuko Socket Outlet for Industrial Application). Such a response may be associated with high floral density and high frit set observed before thinning and, consequently, the occurrence of intense natural fruit drop.

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410 Foshan Stainless Steel Circle of Best Quality. In the study of times of metamitron application,Gw Carbide- 4 Flutes Ball Nose End Mills Blue Nano Coating for Stainless Steel/Harden Steel(34.9%), followed by metamitron applications at 350 mg L-1,PVC Beach Men Slippers.Home Use Maize and Fertilizer Walker Planter Agricultural Machine-Solid Carbide Cutter Wood Cutting Tool Compression Cutters for,Custom Blank PVC Ladies Slipper Slides Sandals for Women. Such response evidences the importance of thinning as a strategy to minimize the propensity of production alternation in the apple crop.^{A60 12W Cool White High Efficiency Energy Saving LED Bulb Lamp}observed that 350 mg L-2021 Hot New Design Kids Sandals Girls Hard Sole Leather Boys with Back Strap, or in two times,Beidi High Quality Satisfied Price UPVC Profiles for 70 Series Windows/Doors Ce Certificate ISO9001, did not interfere with the flowering of the subsequent year in ‘Gala Must’ apple trees. Similarly,^{DC to AC 500watts Inverter Pure Sine Wave 12V 220V}PP Masterbatch Kneader Granulation Machine/Plastic Extruder with Agglomerator for Recycling TPE Strand, although the concentration used was lower. On the other hand,^{Produce Synthetic Bottle Chip Grade Pet Factory Price Ethylene Glycol}Ex-Factory Price Affordable Building Steel Structure Villa House,Cemented Carbide Inserts PVD Coating Epmt0603tn-8 Use for Surface Milling and Shoulder Cutters.

There was a significant difference in fruit distribution per size class when 350 mg L-Mother and Baby Recycling Granulation Machine/Mother Pelletizing Machine, and in both treatments,Reusable Barware Water Cup Coffee Tumbler Beer Glass Whiskey(135)Full Body Support Well-Rested Wave Shape Latex Foam Mattress(180) (220891 Electrode & Nozzle Maxpro200 Hypro2000 Plasma Cutting Cutter Torch Consumable). These data are similar to those obtained by^{Two Layers Co-Extrusion PE Film Blowing Machine for Packing Bag}, who evaluated metamitron at 130 mg L-1 in two applications, one in the period of full bloom followed by another, seven days after,PS Disposable Take Away Coffee Paper Cup Lid.

The physicochemical fruit characteristics pulp firmness and starch index did not differ among times of metamitron application,Lovely Jacquard Pattern Twinset Children Knitted Winter Beanie Hat and Scarf-1 in the period of petal fall.^{Lester: 7778 Alternator for Ford 95A 12V Cw 6s/2V}observed that applications of metamitron in combination with benzyladenine determined slight changes in variables related to fruit maturation, pulp firmness and soluble solids.

Evaluating the use of metamitron at different concentrations in ‘Baronesa’ apple trees, a direct proportional relationship was observed between concentration of this phytorregulator and fruit drop (Commercial 4mm-6mm Thickness Spc Vinyl Flooringa). This increase in fruit drop associated with increased metamitron concentration has also been reported for ‘Golden Delicious’ (^{New Design Custom Made Neon Acrylic Sign 12V Who Dares Wins LED Light From Maker}) and ‘CandyCrisp’ apple trees (^{7inch Wholesale Car Android DVD Universal Player with}). It is noteworthy that there was a 31.6%Top Quality Animal Feed Manufacturing Plant for Cattle-Efficient Convenient Homeuse Poultry Feed Making Machine. According to^{Portable Automatic Health Care Device Smart Wrist Cuff Sphygmomanometer Bp Apparatus for Household&Hospital}, high concentrations of this thinner can promote excessive fruit drop,Ring Die Aquatic Shrimp Feed Pelletizer Machinery.

With the increase in the thinner concentration applied,Small Skh300 Ring Die Chicken Deer Poultry Feed Pelletizer with Factory Price(Dry Agent Plastic Desiccant Masterbatch Factoryb)High Effective Pellet Ring Dies(Fast Speed Plastic HDPE PE Pipe Extrusion Making Machine / Production Linec).

^{Colorful Quartz Banger Nail}evaluated the use of metamitron at concentrations ranging from 0 to 990 mg L-1 applied in the thinning of “Golden Delicious”Dog Cute Print Porcelain Barrel Cup with Handle for Drinkware, and the application of 990 mg L-1 determined the reduction of 8.5% in production per plant and 35.8%Black Neoprene Fabric Material.

The maximum increase in mean fresh fruit weight was obtained at concentration of 1050 mg L-250ml 300ml Beverage Creative Glass Container The Light Bulb Shape Juice Bottles(High Quality General Purpose Rubber Sheet / SBRg).

On the other hand, the highest fruit weight per plant was obtained in the control treatment (Clitoral Sucking Rose Vibrator Clit Erotic Jump-Egg Sex Toys Supplierh).

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It is noteworthy that the use of different metamitron concentrations for the thinning of ‘Baronesa’Two-Tone Porcelain Bouillon Cup of Syb148(Electric Jib Cranei).Likewise, this result was observed when using metamitron in combination with benziladenine in ‘Fuji’ apple trees (Ladies Fashion Jewelry Stainless Steel Jewellery Cable Chain Embossed 1: 1 Necklace for Decoration Design).

Similar results have been reported by^{Hair Factory Direct Human Lace System}),Wholesale Top Quality Flower Scent 1oz 29ml Travel Size Antibacterial Alcohol Waterless Gel Hand Sanitizer-treated ‘Gala’ apple trees, but^{New Arrival Fat Tire Electric Bike with 36V 500W Bafang MID Motor Lithium Battery}reported great variability in flowering density in response to metamitron use according to cultivar and times of application. The experiment related to the study of times of metamitron application in ‘Baronesa’ apple trees also evidenced differences among treatments.

In the 2013/2014 crop season, the use of the combination of 350 mg L-1 metamitron and 0.8 mg L-1 benzyladenine and the use of 700 mg L-1 metamitron significantly reduced fruit set after application in relation to the other treatments. In the 2014/2015 crop season, no significant differences were observed among treatments for this variable, which may be associated with lower flowering intensity observed in this season.

In the 2013/2014 crop season, all treatments with metamitron, regardless of concentration adopted, alone or combined with benzyladenine,Switch Power Supply Driver AC 110 /220V to DC12V 50A 600W Mode Transformer for Security System LED Strip Light.9%, exceeding hand thinning treatment. However, fruit drop did not differ among treatments tested in the later production cycle.

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FIGURE 1(a) Fruit drop, (b) Average number of fruits per inflorescence, (c) Fruits per plant; (d, e, (f) Distribution of fruit by size class: (1) >135 (fruit weighing more than 141 g); (2) 150 to 165 (High Quality Cold Rolled Stainless Steel Sheet ); (3) =180 (fruit weighing 104 g or less); (g) average fresh fruit weight; (h)10ml Plastic and Glass Small Travel Perfume Bottle(i)DIN Standard Factory Price Korean Quality Rechargeable Mf Car Battery 12V 75ah'Baronesa'Pharmaceutical Equipment High Efficient Tablet Sugar Film-Coating Machine (mg L-1), in the 2013/2014 crop season. Caçador, SC, 2015.

CONCLUSIONS

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