Abstract
Abstract Placement of fertilizer in the seed furrow to increase nutrient availability is a common practice in row-crop production. While in-furrow application of fertilizer is widely utilized in the production of winter wheat ( Triticum aestivum L.), there is a lack of work evaluating new formulations and nutrient combinations that are available. The objective of this study was to quantify the effects of in-furrow fertilizer products and combinations of products on winter wheat grain yield, nitrogen and mineral concentrations. Trials were conducted across five site-years in central Oklahoma using 11 fertilizer formulations placed in-furrow at the time of planting. In locations that soil test phosphorus (STP) levels or potassium were above sufficiency, the use of in-furrow fertilizers did not improve yield over the control. Inconsistency of response was noted at locations where STP levels were below the critical threshold. While one location showed no response to the addition of P regardless of source, two other locations had significant yield responses from three or more P-containing fertilizers. The addition of both sulphur and zinc resulted in increased yield over the base product at one low STP location. Nutrient concentrations were also influenced in nutrient-limited soils; however, no trends in response were present. Based upon the results of this study, the application of in-furrow fertilizer has the potential to increase winter wheat grain yield and nutrient concentration, when soil nutrients are limiting. As expected the addition of fertilizer when soil test levels are at or above a sufficiency did not increase grain yield.
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Claims 5
Claim · model-written summary
Where soil P or potassium was sufficient, in-furrow fertilizer did not improve wheat yield over control.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- in-furrow fertilizerse0
- Outcome
- yielde0
- Direction
- did not improvee0
- Qualifier
- soil test phosphorus (STP) levels or potassium were above sufficiencye0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In locations that soil test phosphorus (STP) levels or potassium were above sufficiency, the use of in-furrow fertilizers did not improve yield over the control.”
t0“winter wheat”
Claim · model-written summary
At one low-P location, adding P from any source produced no yield response.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- the addition of Pe0
- Outcome
- yield responsese0
- Direction
- no responsee0
- Qualifier
- one locatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While one location showed no response to the addition of P regardless of source, two other locations had significant yield responses from three or more P-containing fertilizers.”
t0“winter wheat”
Claim · model-written summary
At two other low-P locations, at least three P-containing fertilizers significantly increased yield.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- P-containing fertilizerse0
- Outcome
- yield responsese0
- Qualifier
- two other locationse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While one location showed no response to the addition of P regardless of source, two other locations had significant yield responses from three or more P-containing fertilizers.”
t0“winter wheat”
Claim · model-written summary
Adding sulphur and zinc increased yield over the base product at one low-STP site.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- both sulphur and zince0
- Outcome
- yielde0
- Direction
- increasede0
- Qualifier
- one low STP locatione0
- Comparator
- the base producte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of both sulphur and zinc resulted in increased yield over the base product at one low STP location.”
t0“winter wheat”
Claim · model-written summary
Fertilizer influenced wheat nutrient concentrations in nutrient-limited soils, without a consistent trend.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- in-furrow fertilizerst0
- Outcome
- Nutrient concentrationse0
- Qualifier
- no trends in response were presente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nutrient concentrations were also influenced in nutrient-limited soils; however, no trends in response were present.”
t0“in-furrow fertilizers on winter wheat”
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