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Nitrogen Release Pattern From Organic Manures Applied to an Acid Soil

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Title Nitrogen Release Pattern From Organic Manures Applied to an Acid Soil
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Creator A. Vel Murugan & T. P. Swarnam
 
Subject N mineralization, organic manures, acid soil
 
Description Not Available
Study of nitrogen release pattern from organic manures is very essential to ensure nitrogen supply in adequate
quantity and at proper time to crop plants in an acid soil. A laboratory incubation experiment was conducted to
determine the nitrogen release pattern from vermicompost (V.C), poultry manure (P.M), neem, inorganic fertilizer
(I.O) and its combinations applied to an acid soil at two different rates. Cumulative nitrogen mineralization was
significantly higher throughout the incubation period for I.O, V.C+P.M and I.O+V.C while it was two weeks after
incubation for V.C and V.C+Neem due to the inhibitory effect of neem on nitrification. The results indicated a
significant increase in the rate of N mineralization in the first one week in which the highest rate of 3.36 mg N day-1
was observed for inorganic fertilizer and thereafter it slowed down. V.C followed by V.C+Neem recorded higher
rate of N mineralization of 0.24 and 0.23 mg day-1 respectively, from 48th days after incubation. V.C+Neem at 120
kg N equivalent ha-1 recorded the highest ammonia content of 42.1% to total available N while V.C+P.M recorded
higher nitrate content of 82.3% at the end of the incubation period. Positive correlation between initial nitrogen and
total mineralized N from the manures and fertilizers (R2 = 0.563) was observed. Furthermore, addition of organic
manures resulted in increase in soil pH where as inorganic fertilizer showed a slight decrease (5.73) than control
(5.78).
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Date 2021-08-03T06:11:34Z
2021-08-03T06:11:34Z
2013-03-05
 
Type Book chapter
 
Identifier A. Vel Murugan & T. P. Swarnam , 2013 Nitrogen Release Pattern From Organic Manures Applied to an Acid Soil
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/52466
 
Language English
 
Relation Not Available;
 
Publisher Canadian Center of Science and Education