Abstract
Abstract Minirhizotrons were used to assess the effects of soil insect suppression on the demography of peach fine roots (<1 mm diameter) over two growing seasons. The experiment was conducted at the USDA–ARS Appalachian Fruit Research Station in Kearneysville, WV, USA using six 15‐year‐old peach trees. Clear butyrate minirhizotrons were installed beneath each tree in April 1996. Soil drench treatments were applied around individual minirhizotron tubes at monthly intervals and consisted of 1 L of water or 250 µ L of a broad‐spectrum insecticide in 1 L of water. Roots were videotaped at 2‐ to 4‐week intervals during the 1996 and 1997 growing seasons. Insecticide application was associated with a significant increase in fine root longevity: the median lifespans of insecticide‐treated roots were 46–125 d longer than those of control roots. In addition, the development of brown pigmentation was significantly delayed in insecticide‐treated roots. Insecticide application did not appear to increase soil fertility, as accumulation of NO 3 – , NH 4 + , and PO 4 2 ‐ on mixed bed ion‐exchange resin was similar in treated and untreated soil. These results suggest that interactions with below‐ground insects can significantly influence root longevity and may alter the rate at which roots undergo developmental changes in anatomy and physiology.
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Claims 3
Claim · model-written summary
Insecticide-treated peach fine roots had significantly longer median lifespans than controls by 46–125 d.
- Taxon
- peach
Prunus persicat0 - Organ / stage
- fine roote0
- Treatment
- Insecticide applicatione0
- Outcome
- median lifespanse0
- Direction
- longere0
- Value
- 46–125 de0
- Comparator
- control rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peach”
e0“Insecticide application was associated with a significant increase in fine root longevity: the median lifespans of insecticide‐treated roots were 46–125 d longer than those of control roots.”
Claim · model-written summary
Insecticide treatment significantly delayed brown pigmentation in peach roots.
- Taxon
- peachPrunus persicat0
- Organ / stage
- rootse0
- Treatment
- insecticide‐treatede0
- Outcome
- development of brown pigmentatione0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peach”
e0“the development of brown pigmentation was significantly delayed in insecticide‐treated roots.”
Claim · model-written summary
Insecticide treatment did not appear to change soil NO 3 – , NH 4 + , and PO 4 2 ‐ accumulation relative to untreated soil.
- Taxon
- peachPrunus persicat0
- Treatment
- Insecticide applicatione0
- Outcome
- accumulation of NO 3 – , NH 4 + , and PO 4 2 ‐e0
- Direction
- similare0
- Comparator
- untreated soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peach”
e0“Insecticide application did not appear to increase soil fertility, as accumulation of NO 3 – , NH 4 + , and PO 4 2 ‐ on mixed bed ion‐exchange resin was similar in treated and untreated soil.”
The same questions in other papers
insecticide · growth · Prunus persica (peach)Positive and negative results
2 in the opposite direction
- negative
- no effect
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.