Abstract
Micronutrient supplementation in maize production is of growing interest to producers and agronomists as means to further increase yield as other crop needs are increasingly met. Plant tissue and soil sampling for micronutrient concentrations have been used to determine likely responses to micronutrient supplementation. Nebraska soils are generally micronutrient sufficient and usually do not have soil or plant tissue micronutrient concentrations below critical levels, however, during precise periods where specific micronutrients are in greatest need due to physiological demands, there may be opportunity for micronutrient supplementation to increase grain yield. The compiled chapters indicate that in most scenarios in Nebraska, foliar micronutrient supplementation is not likely to result in increased maize yield, and yield reductions may occur with micronutrient supplementation. However, grain yield increases can occur with micronutrient supplementation even when soil or plant tissue micronutrient concentrations are above critical levels (Chapter 3 and 4). Models are needed that consider factors in addition to soil and plant micronutrient concentrations for improved prediction of maize yield responses to applied micronutrients (Chapter 2). Additionally, the following chapters provide recommendations on target growth stages for foliar-applied micronutrients (Chapter 4), opportunities for precision application technologies with foliar-applied micronutrients in scenarios with confirmed micronutrient deficiency (Chapter 3, 4, and 6) ), an assessment of soil and plant micronutrient correlations and their relationship with grain nutrient densities (i.e. biofortification) (Chapter 2 and 4), and opportunities for nanomaterials to improve the efficiency of foliar-applied micronutrients (Chapter 5).
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Claims 5
Claim · model-written summary
Nebraska soils were generally micronutrient sufficient and usually above critical soil and plant tissue levels.
- Outcome
- soil or plant tissue micronutrient concentrationse0
- Qualifier
- below critical levelse0
- Setting
- Nebraskae0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nebraska soils are generally micronutrient sufficient and usually do not have soil or plant tissue micronutrient concentrations below critical levels”
t0“Maize ( Zea mays L.)”
Claim · model-written summary
In most Nebraska scenarios, foliar micronutrient supplementation was unlikely to increase maize yield.
- Treatment
- foliar micronutrient supplementatione0
- Outcome
- maize yielde0
- Direction
- not likely to result in increasede0
- Setting
- Nebraskae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in most scenarios in Nebraska, foliar micronutrient supplementation is not likely to result in increased maize yield”
t0“Maize ( Zea mays L.)”
Claim · model-written summary
Micronutrient supplementation may reduce maize yield in some scenarios.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield reductions may occur with micronutrient supplementation”
t0“Maize ( Zea mays L.)”
Claim · model-written summary
Micronutrient supplementation can increase maize grain yield even above critical soil or tissue micronutrient concentrations.
- Treatment
- micronutrient supplementatione0
- Outcome
- grain yielde0
- Direction
- increasese0
- Qualifier
- even when soil or plant tissue micronutrient concentrations are above critical levelse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield increases can occur with micronutrient supplementation even when soil or plant tissue micronutrient concentrations are above critical levels”
t0“Maize ( Zea mays L.)”
Claim · model-written summary
The authors recommend models using factors beyond soil and plant micronutrient concentrations to predict maize yield responses.
- Outcome
- Models are needed that consider factors in addition to soil and plant micronutrient concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Models are needed that consider factors in addition to soil and plant micronutrient concentrations for improved prediction of maize yield responses to applied micronutrients”
t0“Maize ( Zea mays L.)”
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