Abstract
Split application makes potassium available at peak crop requirement period whereas basal application appeared to accommodate maximum demand at initial growth stages resulting into fixation and other losses. To assess the most suitable and economic ways of potassium application on growth and yield of transplanted paddy in north-eastern plains of India, an experimented was conducted during 2017-18, to evaluate the performance of different levels of potassium applied at different times. The experiment was laid out in split plot design with 3 replications consisting of three levels of potassium application i.e. K1-100% RDK (40kg), K2-150% RDK (60kg) and K3-200% RDK (80kg) at four different times i.e. S1 (basal), S2 (50% basal + 50% at max. tillering), S3 (50% basal + 25% at max. tillering + 25% at PI) and S4 (75% as basal + 1% spray at maximum tillering and PI). The results revealed that with increase in the level of potassium, significant positive effects on all the growth parameters and yield attributes were observed whereas potassium application with S3 showed better crop performance. Increased level of potassium (200% RDK) recorded significantly higher grain yield (4999 kg ha-1) and straw yield (8488 kg ha-1). Thus, levels of potassium in paddy may safely be increased up to 200% for maximizing yield potential as well as net profit and it should be applied in split doses with 50% of it as basal, 25% at max. tillering and rest 25% at panicle initiation.
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Claims 6
Claim · model-written summary
Increasing potassium significantly improved growth parameters and yield attributes.
Not reportedComparator
Verbatim
e0“The results revealed that with increase in the level of potassium, significant positive effects on all the growth parameters and yield attributes were observed whereas potassium application with S3 showed better crop performance.”
t0“paddy”
Claim · model-written summary
The S3 split schedule gave better crop performance.
Not reportedComparator
Verbatim
e0“potassium application with S3 showed better crop performance.”
t0“paddy”
Claim · model-written summary
The 200% recommended potassium dose gave significantly higher grain yield of 4999 kg ha-1.
Not reportedComparator
Verbatim
e0“Increased level of potassium (200% RDK) recorded significantly higher grain yield (4999 kg ha-1) and straw yield (8488 kg ha-1).”
t0“paddy”
Claim · model-written summary
The 200% recommended potassium dose gave significantly higher straw yield of 8488 kg ha-1.
Not reportedComparator
Verbatim
e0“Increased level of potassium (200% RDK) recorded significantly higher grain yield (4999 kg ha-1) and straw yield (8488 kg ha-1).”
t0“paddy”
Claim · model-written summary
The authors recommend increasing potassium up to 200% for paddy yield and net profit.
Verbatim
e0“levels of potassium in paddy may safely be increased up to 200% for maximizing yield potential as well as net profit”
Claim · model-written summary
The authors recommend split application with 50% basal, 25% at maximum tillering and 25% at panicle initiation.
Verbatim
e0“it should be applied in split doses with 50% of it as basal, 25% at max. tillering and rest 25% at panicle initiation.”
t0“paddy”
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