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Water regimes and phosphorus on dry matter production, root porosity, transpiration and ion uptake of rice ( L.)kharif Oryza sativa

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Title Water regimes and phosphorus on dry matter production, root porosity, transpiration and ion uptake of rice ( L.)kharif Oryza sativa
Not Available
 
Creator N.K. Das
A.K. Saha
Partha PratimAdhikary
 
Subject Grain yield, Nutrient uptake, Phosphorus, Rice, Root porosity, Soil water regimes, Transpiration
 
Description Not Available
A pot experiment was conducted on clay loam soil to study the influence of
phosphorus and water regimes on dry matter production, root porosity,
transpiration and nutrient uptake of rice, grown under flooding and field capacity.
The results revealed that root porosity, transpiration, nutrient uptake, dry matter
production and grain yield of rice increased greatly with increase in levels of
phosphorus and soil water regime. With the increase of phosphorus level from 0 to
-1
60 kg ha-1 , dry weight of shoot at harvest was increased by 1.68 times under
flooding and 1.40 times under field capacity. The total amount of water transpired
by rice plant under flooding was 1.85 to 1.95 times more than under field capacity.
Positive correlation was also obtained between the amount of water transpired day
pot-1 and the total root porosity and nutrient uptake. The uptake of N, P, K, Ca was
slow up to 30th Days After Transplanting (DAT) and for Mg, up to 60th DAT except
in P level of 60 kg ha-1 under flooding. Although the uptake of nutrients continued
up to the final stage of harvest, but, the rate of uptake was maximum between 30
and 90th DAT for N, 60th and 90th DAT for P, K, Ca and Mg. The uptake of all the
nutrients (N, P, K, Ca, and Mg) increased with increase in soil water regimes and
plan growth. More availability of nutrients in soil together with greater
transpiration of water and ion facilitated by increased root porosity might have
increased nutrient uptake resulting increase in dry matter production and yield of
rice plant with increase in levels of phosphorus under flooded condition.
Not Available
 
Date 2020-05-15T05:33:00Z
2020-05-15T05:33:00Z
2015-07-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/35641
 
Language English
 
Relation Not Available;
 
Publisher Not Available