Abstract
Abstract Response of barley ( Hordeum vulgare L.) and oats ( Avena sativa L.) to band application of N sources with and without Mn and the effects of band vs. broadcast application of fertilizers on the Mn concentration in leaves and yield of barley and oats were studied in the field in 1978, 1979, and 1980 on Lower Klamath Lake where Mn deficiency of oats had been observed in previous years. Experiments were established on a Tulana silt loam variant (medial, nonacid, mesic, Mollic, Andequepts). The pH of the soils ranged from 7.6 to 8.3 and the organic matter content was between 17 and 19%. Nitrogen was applied at 0, 22, or 45 kg N/ha as (NH 4 ) 2 SO 4 , NH 4 Cl, urea, and various urea‐phosphate (UP) formulations. Manganese was applied at 0 or 5.6 kg Mn/ha as MnSO 4 . All treatments received P at 19 kg P/ha as Ca(H 2 PO 4 ) 2 or 25 kg P/ha in the UP fertilizers, and Cu as CuSO 4 at 2.2 kg Cu/ha in 1978 and 5.6 kg Cu/ha in 1979 and 1980. ‘Cayuse’ oats and ‘Steptoe’ barley were planted at 110 kg/ha. Band application with the seed of 22 or 45 kg N/ha as (NH 4 ) 2 SO 4 or NH 4 Cl significantly increased both barley and oat leaf Mn concentrations and yields all 3 yr. Leaf Mn concentrations and yields were not increased by urea fertilization. When Mn was applied with the N fertilizer, leaf Mn concentrations and yields were similar regardless of N source. Broadcast application of fertilizers did not increase leaf Mn concentration or yield. The UP materials were intermediate in effectiveness between urea and (NH 4 ) 2 SO 4 .
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Claims 6
Claim · model-written summary
Banded ammonium sulfate increased barley and oat leaf manganese concentrations over three years.
- Taxon
- barley and oat
.jpg?width=60)
Hordeum vulgare
Avena sativae0 - Treatment
- 22 or 45 kg N/ha as (NH 4 ) 2 SO 4e0
- Outcome
- barley and oat leaf Mn concentrationse0
- Direction
- increasede0
Not reportedComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Band application with the seed of 22 or 45 kg N/ha as (NH 4 ) 2 SO 4 or NH 4 Cl significantly increased both barley and oat leaf Mn concentrations and yields all 3 yr”
Claim · model-written summary
Banded ammonium chloride increased barley and oat yields over three years.
- Taxon
- barley and oatHordeum vulgareAvena sativae0
- Treatment
- 22 or 45 kg N/ha as (NH 4 ) 2 SO 4 or NH 4 Cle0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Band application with the seed of 22 or 45 kg N/ha as (NH 4 ) 2 SO 4 or NH 4 Cl significantly increased both barley and oat leaf Mn concentrations and yields all 3 yr”
Claim · model-written summary
Urea fertilization did not increase leaf manganese concentrations or yields.
- Taxon
- Barley and OatsAvena sativaHordeum vulgaret0
- Treatment
- urea fertilizatione0
- Outcome
- Leaf Mn concentrations and yieldse0
- Direction
- not increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf Mn concentrations and yields were not increased by urea fertilization”
t0“Barley and Oats”
Claim · model-written summary
With manganese applied alongside nitrogen fertilizer, leaf manganese concentrations and yields were similar across nitrogen sources.
- Taxon
- Barley and OatsAvena sativaHordeum vulgaret0
- Treatment
- Mn was applied with the N fertilizere0
- Outcome
- leaf Mn concentrations and yieldse0
- Direction
- similare0
- Comparator
- N sourcee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When Mn was applied with the N fertilizer, leaf Mn concentrations and yields were similar regardless of N source”
t0“Barley and Oats”
Claim · model-written summary
Broadcast fertilizer application did not increase leaf manganese concentration or yield.
- Taxon
- Barley and OatsAvena sativaHordeum vulgaret0
- Treatment
- Broadcast application of fertilizerse0
- Outcome
- leaf Mn concentration or yielde0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broadcast application of fertilizers did not increase leaf Mn concentration or yield”
t0“Barley and Oats”
Claim · model-written summary
Urea phosphate materials had effectiveness between urea and ammonium sulfate.
- Taxon
- Barley and OatsAvena sativaHordeum vulgaret0
- Treatment
- UP materialse0
- Outcome
- intermediate in effectivenesse0
- Direction
- intermediatee0
- Comparator
- urea and (NH 4 ) 2 SO 4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The UP materials were intermediate in effectiveness between urea and (NH 4 ) 2 SO 4”
t0“Barley and Oats”
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