Spray Tests on Citrus to Control Fruit Tree Leaf Roller1

1951 ◽  
Vol 44 (1) ◽  
pp. 82-87
Author(s):  
Laurence E. Atkins
Keyword(s):  
Fruit Tree ◽  
Control Fruit ◽  
Tree Leaf

scholarly journals Reliable Methodologies and Impactful Tools to Control Fruit Tree Viruses

Crops ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 32-41
Author(s):  
Michel Ravelonandro
Keyword(s):  
Wild Species ◽  
Economic Impacts ◽  
Plant Viruses ◽  
Fruit Tree ◽  
Control Measures ◽  
Relevant Concept ◽  
Control Fruit ◽  
Modern Biotechnology

Viruses are microbes that have high economic impacts on the ecosystem. Widely spread by humans, plant viruses infect not only crops but also wild species. There is neither a cure nor a treatment against viruses. While chemists have developed further research of inefficient curative products, the relevant concept based on sanitary measures is consistently valuable. In this context, two major strategies remain indisputable. First, there are control measures via diagnostics presently addressing the valuable technologies and tools developed in the last four decades. Second, there is the relevant use of modern biotechnology to improve the competitiveness of fruit-tree growers.

scholarly journals Allelopathic influence of some fruit tree leaf extracts on germination and seedling development of different weeds and vegetable crops

2018 ◽  
Vol 12 (05) ◽  
pp. 726-730 ◽  
Author(s):  
Matheus Ferreira França Teixeira ◽  
◽  
Daniel Teixeira Pinheiro ◽  
Hamilton Carvalho Santos Junior ◽  
Ediane Conceição Alves ◽  
...  
Keyword(s):  
Fruit Tree ◽  
Seedling Development ◽  
Vegetable Crops ◽  
Leaf Extracts ◽  
Tree Leaf

scholarly journals THE PUPAL INSTAR OF THE FRUIT-TREE LEAF-ROLLER (ARCHIPS ARGYROSPILA)

1915 ◽  
Vol 47 (6) ◽  
pp. 185-187
Author(s):  
GLENN W. HERRICK ◽  
R. W. LEIBY
Keyword(s):  
Fruit Tree ◽  
Leaf Roller ◽  
Tree Leaf

A Sampling Technique for Population and Mortality Factors of the Fruit-Tree Leaf Roller, Archips argyrospilus (Wlk.) (Lepidoptera: Tortricidae), on Apple in Quebec

1962 ◽  
Vol 94 (6) ◽  
pp. 561-573 ◽  
Author(s):  
R. O. Paradis ◽  
E. J. LeRoux
Keyword(s):  
Sampling Technique ◽  
Fruit Tree ◽  
Sampling Techniques ◽  
Ecological Studies ◽  
Natural Control ◽  
Mortality Factors ◽  
Leaf Roller ◽  
Control Factors ◽  
Tree Leaf ◽  
Archips Argyrospilus

Sampling techniques for population and mortality factors of the fruit-tree leaf roller, Archips argyrospilus (Wlk.), on apple in Quebec, were developed at Rougemont from 1958 to 1960 with the object of obtaining reliable statistics for life tables on this species. Biometric techniques have not previously been applied for ecological studies of A. argyrospilus, most workers having been primarily concerned with life history, chemical control, and general observations on natural control factors (Gill, 1913; Caesar, 1916 and 1917; Petch, 1916 and 1942; Herrick, 1917; Muesebeck, 1921; Regan, 1923; Viereck, 1924, Venables, 1924 and 1937; Harman, 1928; Hall, 1930 and 1934; Knull, 1932; Chapman et al., 1941; Greenwood, 1943).

Ethephon Alters the Physiology of Young Apple Fruits

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 497b-497
Author(s):  
Daniel Ward ◽  
Richard Marini
Keyword(s):  
Water Potential ◽  
Fruit Development ◽  
Dry Mass ◽  
Fruit Tree ◽  
Fruit Growth ◽  
Abscission Zone ◽  
Starch Accumulation ◽  
Control Fruit ◽  
Apple Fruits ◽  
Fruit Diameter

Methods are needed to quickly assess the efficacy of chemical thinning treatments, so, if needed, additional treatments can be applied. When fruit diameter averaged 19 mm, `Smoothee' trees were sprayed with Ethrel at the rate of 3.7 ml formulation/L to induce abscission of most fruits on the tree. The diameter of 10 fruit/tree were measured daily and fruits were sampled 2, 4, and 6 days after treatment (DAT) to evaluate fruit development. Fruit on nontreated trees increased in diameter at the rate of about 0.7 to 0.9 mm/day. Fruit growth on treated trees was normal for 1 day, slowed to 0.5 mm for 2 days, and grew <0.1 mm/day thereafter. Fruit water potential was less negative for treated trees 2 DAT. Fresh and dry mass of treated fruit ceased increasing after 4 DAT. Percent dry mass of control fruit declined on each sampling date, but did not decline for treated fruit after 4 DAT. Cellulase was active in the abscission zone 4 DAT for treated fruit, but not control fruit. Compared to control fruit 6 DAT, treated fruit had elevated respiration and less starch accumulation. Fruits began to abscise 6 DAT. Following Ethrel application. The first indication that a fruit is destined to abscise are reduced fruit growth and changes in water potential 2 DAT.

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