Factorial Experiments Derivable from Combinatorial Arrangements of Arrays

C. Radhakrishna Rao

doi:10.2307/2983576

Factorial Experiments Derivable from Combinatorial Arrangements of Arrays

Supplement to the Journal of the Royal Statistical Society ◽

10.2307/2983576 ◽

1947 ◽

Vol 9 (1) ◽

pp. 128 ◽

Cited By ~ 194

Author(s):

C. Radhakrishna Rao

Keyword(s):

Factorial Experiments ◽

Combinatorial Arrangements

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Selected illustrations of full factorial experiments with four factors

10.3403/30173652 ◽

2008 ◽

Keyword(s):

Factorial Experiments ◽

Full Factorial

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Pre-harvest field application of enhanced freshness formulation reduces yield loss in orange

Chemical and Biological Technologies in Agriculture ◽

10.1186/s40538-020-00191-7 ◽

2020 ◽

Vol 7 (1) ◽

Author(s):

Jaspa Samwel ◽

Theodosy Msogoya ◽

Abdul Kudra ◽

Hosea Dunstan Mtui ◽

Anna Baltazari ◽

...

Keyword(s):

Yield Loss ◽

Sweet Orange ◽

New Technology ◽

Significant Negative Correlation ◽

Field Application ◽

Yield Losses ◽

Factorial Experiments ◽

Marketable Yield ◽

Pest Damage ◽

Marketable Fruit

Abstract Background Orange (Citrus sinensis L.) production in Tanzania is constrained by several pre-harvest factors that include pests. Hexanal, sprayed as Enhanced Freshness Formulation (EFF) is a relatively new technology that has been reported to reduce pre-harvest loss in fruits. However, the effects of hexanal on pre-harvest yield loss of orange are not known. We studied the effects of hexanal as EFF on yield losses of three sweet orange cultivars namely, Early Valencia, Jaffa, and Late Valencia. Factorial experiments tested the effects of EFF concentration, variety, and time of EFF application on number of dropped fruit, percentage of non-marketable fruit and incidence of pest damage. Results Results showed significant negative correlation (p < 0.001) between EFF and the percentage of dropped fruit, non-marketable yield, and incidence of pest damage. An increase in hexanal concentration by 1%, is expected to reduce number of dropped fruit by 50, percentage of non-marketable by 35.6, and incidences of pest damage by 36.5% keeping other factors constant. Results also show significant association (p < 0.001) between time of hexanal application and non-marketable yield. Percentage of dropped fruit is expected to increase by 1 for each day away from harvest, keeping other factors constant. Conclusion Pre-harvest application of hexanal as EFF can significantly reduce number of dropped fruits, percentage of non-marketable fruit and incidence of pest damage.

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