Abstract
I used a multidisciplinary, multiyear experiment to investigate the effect of interactive application of inputs on growth, productivity, and returns of three mature Washington navel oranges [Citrus sinensis (L.) Obseck] grown on rough lemon rootstock. Seventy-two combinations [made up of three levels of irrigation, two levels of fungicides/nematicides (+/-), two levels of miticides (+/-), two levels of growth regulators (+ /-), and three levels of N fertilizer] were investigated. The productivity measures indicated statistically significant interactive effects in some cases and only main effects with others. However, knowledge of significant treatment effects in one or the other productivity parameters would not have provided a complete picture to the end user without the economic analysis. Using a partial budgeting procedure, returns (after costs) were calculated for each treatment combination. Statistical analyses of variance also were performed to test for significant differences of productivity, crop value, and returns among the treatments and interactions. The results indicate that returns after costs were higher for the + fungicide-nematicide treatment and also were high with increased irrigation. However, the various treatments and their significant roles in productivity and returns are discussed. Also, the impact of water cost increases are analyzed.
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Claims 3
Claim · model-written summary
Returns after costs were higher with the + fungicide-nematicide treatment in navel oranges.
- Taxon
- navel oranges
Citrus sinensise0 - Material
- rough lemon rootstocke0
- Treatment
- + fungicide-nematicide treatmente1
- Outcome
- returns after costse1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three mature Washington navel oranges [Citrus sinensis (L.) Obseck] grown on rough lemon rootstock”
e1“returns after costs were higher for the + fungicide-nematicide treatment and also were high with increased irrigation”
Claim · model-written summary
Returns after costs in navel oranges were high with increased irrigation.
- Taxon
- navel orangesCitrus sinensise0
- Material
- rough lemon rootstocke0
- Treatment
- increased irrigatione1
- Outcome
- returns after costse1
- Direction
- highe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three mature Washington navel oranges [Citrus sinensis (L.) Obseck] grown on rough lemon rootstock”
e1“returns after costs were higher for the + fungicide-nematicide treatment and also were high with increased irrigation”
Claim · model-written summary
Productivity measures of navel oranges showed statistically significant interactive effects of treatments in some cases and only main effects in others.
- Taxon
- navel orangesCitrus sinensise0
- Outcome
- productivity measurese2
- Qualifier
- statistically significant interactive effects in some cases and only main effects with otherse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three mature Washington navel oranges [Citrus sinensis (L.) Obseck] grown on rough lemon rootstock”
e2“The productivity measures indicated statistically significant interactive effects in some cases and only main effects with others”
The same questions in other papers
irrigation · yield · Citrus sinensis (sweet orange)Positive and negative results
19 papers in the same direction as this paper · 17 in the opposite direction
- no effect
- negative
- no effect
33 papers more in this group
See all 37 papers →fungicide · yield · Citrus sinensis (sweet orange)Results agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.