Abstract
Field experiments were conducted during summer and kharif seasons of 2001 and 2002 to evaluate the possibility of utilizing the biomass of weeds viz., Ipomoea carnea and Eichhornia crassipes either as fresh or as vermicompost prepared from such weed biomass for substituting fertilizer nitrogen in rice-rice system under puddle soil conditions. Results revealed that vermicompost prepared from either I. carnea or E. crassipes was at par or superior to fresh biomass incorporation and FYM in increasing crop yield, nitrogen uptake and improvement in soil nutrient status. Results also showed the possibility of supplementing 25 to 50% nitrogen through fresh biomass incorporation of I. carnea or vermicompost prepared from either I. carnea or E. crassipes. Significant increase in soil microbial population was also recorded due to incorporation of different sources of organic manure over the recommended nitrogen as fertilizer alone.
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Claims 3
Claim · model-written summary
Vermicompost from either weed was at par or superior to fresh biomass and FYM for crop yield, nitrogen uptake and soil nutrient status.
- Taxon
- rice
Oryza sativae1 - Treatment
- vermicompost prepared from either I. carnea or E. crassipese2
- Outcome
- crop yield, nitrogen uptake and improvement in soil nutrient statuse2
- Direction
- at par or superiore2
- Comparator
- fresh biomass incorporation and FYMe2
- Setting
- Field experimentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted during summer and kharif seasons of 2001 and 2002”
e1“for substituting fertilizer nitrogen in rice-rice system under puddle soil conditions”
e2“vermicompost prepared from either I. carnea or E. crassipes was at par or superior to fresh biomass incorporation and FYM in increasing crop yield, nitrogen uptake and improvement in soil nutrient status”
Claim · model-written summary
Fresh biomass of I. carnea could supplement 25 to 50% of the nitrogen in rice.
- Taxon
- riceOryza sativae1
- Treatment
- fresh biomass incorporation of I. carneae3
- Outcome
- supplementing 25 to 50% nitrogene3
- Value
- 25 to 50%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“for substituting fertilizer nitrogen in rice-rice system under puddle soil conditions”
e3“Results also showed the possibility of supplementing 25 to 50% nitrogen through fresh biomass incorporation of I. carnea or vermicompost prepared from either I. carnea or E. crassipes”
Claim · model-written summary
Incorporating organic manure over recommended nitrogen significantly increased soil microbial population.
- Taxon
- riceOryza sativae1
- Treatment
- incorporation of different sources of organic manuree4
- Outcome
- soil microbial populatione4
- Direction
- increasee4
- Comparator
- recommended nitrogen as fertilizer alonee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“for substituting fertilizer nitrogen in rice-rice system under puddle soil conditions”
e4“Significant increase in soil microbial population was also recorded due to incorporation of different sources of organic manure over the recommended nitrogen as fertilizer alone”
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