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Effect of sole and conjunctive applications of plant residues and inorganic nitrogen on growth, yield ad N uptake of sorghum.

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Title Effect of sole and conjunctive applications of plant residues and inorganic nitrogen on growth, yield ad N uptake of sorghum.
Effect of sole and conjunctive applications of plant residues and inorganic nitrogen on growth, yield ad N uptake of sorghum.
 
Creator ICAR_CRIDA
 
Subject Conjunctive use, nitrogen, inorganic, sorghum straw, gliricidia, sorghum, yield, N uptake
 
Description Not Available
Conjunctive use of organic and inorganic sources of nitrogen is a pragmatic
approach for increasing crop productivity while maintaining or improving soil quality. Field
experiments were conducted to optimize the conjunctive use of sorghum straw and gliricidia
'loppings with urea for supplying nitrogen to sorghum grown in dryland Alfisols during the kharif
seasons of 1994 and 1995 with 13 treatments and 3 replications in a randomized block design.
Treatments consisted of 'sole and conjunctive applications of urea and plant residues, viz.
sorghum straw and gliricidia loppings to supply N equivalent to the recommended dose of 60
kg her1 to rainfed sorghum. Crop growth, yield and N uptake were recorded. In the initial stages
of crop growth, drymatter production Was higher with 100% N through urea treatment, but with
the progress of crop age, urea + gliricidia treatments produced equal or greater drymatter and
grain yield. Application of sorghum straw caused reduction in drymatter production and grain
yield. Nitrogen uptake by the crop also showed similar trends. Nitrogen uptake at maturity was
distinctly higher with gliricidia treatments compared to 100% N through urea. Agronomic
efficiency and apparent recovery of applied N were higher with gliricidia treatments and lower
with sorghum straw at equivalent N level. Negative efficiency and recovery were observed with
100% N through sorghum straw treatment. The results indicate that gliricidia can be used as
a source of N to crops, solely or in combination with inorganic N, whereas sorghum straw can
not be used as a source of N, even in combination with inorganic N.
Not Available
 
Date 2020-02-25T04:53:27Z
2020-02-25T04:53:27Z
2005
 
Type Technical Report
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/32411
 
Language English
 
Relation Not Available;
 
Publisher Srinivas, K., Sridevi, S. and Sharma, K.L.