“富士三岛”苹果树在黑色防雹网下的化学间伐方案

IF 0.7 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pesquisa Agropecuaria Brasileira Pub Date : 2023-01-01 DOI:10.1590/s1678-3921.pab2023.v58.03196
Lucas De Ross Marchioretto, Andrea De Rossi, Gilmar Arduino Bettio Marodin
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引用次数: 0

摘要

摘要本研究的目的是评价不同植物生长调节剂混合物在“富士三岛”苹果树开花后的化学间伐方案,并确定在减少坐果、减少人工间伐和提高果实质量方面最有效的方案。在黑色防雹网下,对苹果树进行了6种化学间伐处理,分别是在开花时喷苯ladenine (BA) +赤霉素4+7 (GA),在15 mm直径的小果实上喷BA + carviyl (CB);BA + GA在FB和萘乙酸(NAA) + CB在直径为7 mm的小果实上;BA + GA在FB和BA + CB在直径为15mm的小果实上;乙烯利(ETH) + CB涂在直径15mm的水果上,亚胺铁(mm) + ETH涂在直径20mm的水果上;直径为7mm的果实为MM,直径为20mm的果实为MM。将这些处理与未处理和手工减薄对照进行比较。黑网减少了22%的光合有效辐射。对“富士三岛”苹果在黑色防雹网下施用BA + GA (47 + 47 g a.i. ha-1),然后在直径为15 mm的小果实上施用BA + CB (80 + 288 g a.i. ha-1)的化学间伐方案,可以持续减少坐果,减少人工间伐,提高果实的重量和大小。
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Chemical thinning programs for 'Fuji Mishima' apple trees under black anti-hail net
Abstract The objective of this work was to evaluate chemical thinning programs containing mixtures of different plant growth regulators, at low concentrations, applied to 'Fuji Mishima' apple trees at post-blossom, as well as to identify the most effective in reducing fruit set, decreasing the need of manual thinning, and improving fruit quality. Under a black anti-hail net, the apple trees were sprayed with the six following chemical thinning protocols (treatments): benzyladenine (BA) + gibberellin4+7 (GA) at full bloom (FB) and BA + carbaryl (CB) on fruitlets with a 15 mm diameter; BA + GA at FB and naphthaleneacetic acid (NAA) + CB on fruitlets with a 7 mm diameter; BA + GA at FB and BA + CB on fruitlets with a 15 mm diameter; ethephon (ETH) + CB on fruitlets with a 15 mm diameter and metamitron (MM) + ETH on fruitlets with a 20 mm diameter; and MM on fruitlets with a 7 mm diameter and MM on fruitlets with a 20 mm diameter. The treatments were compared with an untreated and a manual thinning control. The black net reduced photosynthetically active radiation in 22%. For 'Fuji Mishima' apples under a black anti-hail net, the chemical thinning program consisting of BA + GA (47 + 47 g a.i. ha-1) at FB, followed by BA + CB (80 + 288 g a.i. ha-1) on fruitlets with a 15 mm diameter, consistently reduces fruit set, requires less manual thinning, and improves fruit weight and size.
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来源期刊
Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuaria Brasileira 农林科学-农业综合
CiteScore
1.20
自引率
0.00%
发文量
45
审稿时长
9-18 weeks
期刊介绍: Pesquisa Agropecuária Brasileira – PAB – is issued monthly by Empresa Brasileira de Pesquisa Agropecuária – EMBRAPA, affiliated to Ministry of Agriculture, Livestock and Food Supply. PAB publishes original scientific-technological articles on Plant Physiology, Plant Pathology, Crop Science, Genetics, Soil Science, Food Technology and Animal Science. Its abbreviated title is Pesq. agropec. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.
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