Abstract
Liming acid soils is considered to assure the availability of Mo in crops. Additionally, in peanuts (Arachis hypogaea L.) the positive response to liming is associated to a better supply of Ca+2, Mo for the nitrogenase-complex activity, and other non-nitrogen fixing activities of the crop. This study was thus undertaken to assess the effect of lime, Mo, and the lime-Mo interaction on peanut crop, on an acid Ultisol at the Mococa Experimental Station, Instituto Agronômico, São Paulo State, Brazil, from 1987 to 1990. A randomized complete block design with four replications, in a 4 x 4 factorial arrangement, was used in the study. The factors included four lime rates (0, 2, 4, and 6 t ha-1) broadcast and incorporated into the soil, and Mo (0, 100, 200, and 300 g ha-1) as (NH4)2MoO4 applied as seed dressing. Lime was applied once at the beginning of the study while Mo was applied at every planting. Peanut seed cv 'tatu' was used. Significant increase in peanut kernel yield with liming was only evident in the absence of Mo, whereas the peanut response to Mo was observed in two out of the three harvests. A higher yield response (28 % increase) was found when Mo was applied without liming. Soil molybdenum availability, as indicated by plant leaf analysis, increased significantly when lime was applied. Molybdenum fertilization led to higher leaf N content, which in turn increased peanut yield in treatments with smaller lime doses.
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Claims 6
Claim · model-written summary
Liming significantly increased peanut kernel yield only without Mo.
- Taxon
- peanut
Arachis hypogaeat0 - Treatment
- liminge0
- Outcome
- peanut kernel yielde0
- Direction
- increasee0
- Qualifier
- only evident in the absence of Moe0
- Comparator
- absence of Moe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant increase in peanut kernel yield with liming was only evident in the absence of Mo”
t0“Peanut”
Claim · model-written summary
Peanut responded to Mo in two of three harvests.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Moe0
- Outcome
- peanut responsee0
- Value
- two out of the three harvestse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the peanut response to Mo was observed in two out of the three harvests”
t0“Peanut”
Claim · model-written summary
Mo without lime raised peanut yield by 28%.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- Moe0
- Outcome
- yield responsee0
- Direction
- highere0
- Value
- 28 %e0
- Comparator
- without liminge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A higher yield response (28 % increase) was found when Mo was applied without liming”
t0“Peanut”
Claim · model-written summary
Lime significantly increased soil Mo availability as indicated by peanut leaf analysis.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- limee0
- Outcome
- Soil molybdenum availabilitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil molybdenum availability, as indicated by plant leaf analysis, increased significantly when lime was applied”
t0“Peanut”
Claim · model-written summary
Mo fertilization raised peanut leaf N content.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- Molybdenum fertilizatione0
- Outcome
- leaf N contente0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Molybdenum fertilization led to higher leaf N content”
t0“Peanut”
Claim · model-written summary
Higher leaf N content increased peanut yield at smaller lime doses.
- Taxon
- PeanutArachis hypogaeat0
- Organ / stage
- leafe0
- Treatment
- smaller lime dosese0
- Outcome
- peanut yielde0
- Direction
- increasede0
- Qualifier
- treatments with smaller lime dosese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher leaf N content, which in turn increased peanut yield in treatments with smaller lime doses”
t0“Peanut”
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