Abstract
A field experiment was conducted to study the influence of nutrient levels and foliar application of plant growth regulators on relative chlorophyll content (SPAD value), days to 50% flowering and nodulation of soybean [Glycine max (L.) Merrill] during kharif 2017. The experiment was laid out using randomized complete block design (factorial concept) with 14 treatments including control and replicated thrice. The treatments consisted of two nutrient levels 125% RDF and 100% RDF, six plant growth regulator (PGR) dosages: salicylic acid @ 50 and 100 ppm, ethrel @ 100 and 200 ppm, chlormequat chloride (CCC) @ 250 and 500 ppm; independent control: RPP, without PGR spray and RPP + KNO3 @ 1%. PGRs were sprayed at 25 and 40 DAS. Results shows that application of 125% RDF + chlormequat chloride @ 500 ppm at 25 and 40 days after sowing (DAS) as foliar spray recorded significantly higher relative chlorophyll content (SPAD value) compared to other treatment combinations and control, followed by 125% RDF + ethrel @ 200 ppm. Numerically application of ethrel (200 ppm) initiated early flowering (42.9 days for 50% flowering) in soybean. 125% RDF treatment statistically observed higher number of nodules and nodule dry weight on per plant basis.
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Claims 3
Claim · model-written summary
125% RDF plus 500 ppm chlormequat chloride significantly increased relative chlorophyll compared with other combinations and control.
- Taxon
- soybean
Glycine maxt0 - Treatment
- 125% RDF + chlormequat chloride @ 500 ppme0
- Outcome
- relative chlorophyll content (SPAD value)e0
- Direction
- highere0
- Comparator
- other treatment combinations and controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of 125% RDF + chlormequat chloride @ 500 ppm at 25 and 40 days after sowing (DAS) as foliar spray recorded significantly higher relative chlorophyll content (SPAD value) compared to other treatment combinations and control”
t0“soybean (Glycine max)”
Claim · model-written summary
Ethrel at 200 ppm produced numerically earlier soybean flowering.
- Taxon
- soybeanGlycine maxe0
- Treatment
- ethrel (200 ppm)e0
- Outcome
- floweringe0
- Direction
- earlye0
- Value
- 42.9 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of ethrel (200 ppm) initiated early flowering (42.9 days for 50% flowering) in soybean”
Claim · model-written summary
125% RDF produced more nodules and greater nodule dry weight per soybean plant.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 125% RDFe0
- Outcome
- number of nodules and nodule dry weighte0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“125% RDF treatment statistically observed higher number of nodules and nodule dry weight on per plant basis”
t0“soybean (Glycine max)”
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