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Brief Record
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MARC Record
Bibliographic Data
Control Number
56472
Date and Time of Latest Transaction
20060619142131.1
General Information
060619s |||||||||b ||00|||
Cataloging Source
PCARRD-DOST
Main Entry - Personal Name
Manguiat, Ireneo J.
Main Entry - Uniform Title
ENGLISH
Title Statement
Alternative sources of nitrogen for rice and corn: utilization of stem-nodulating and non stem-nodulating legumes through green manuring
General Note
College, Laguna: UPLB, 1988. 75p. -(PCARRD-ASSP Funded Project)
Summary, Etc.
Several local rhizobial isolates grown in different soil types were collected from Sesbania rostrata. These were purified and tested on either roots or stems under growth chamber conditions and those which performed well were subsequently developed into liquid inoculants. Different methods of inoculating S. rostrata were tried in both screenhouse and field conditions. Inoculation method/green manuring treatments were as follows: control; 45 kg N/ha; S. rostrata, Uninoc.; S. rostrata, Uninoc. + 45 kg N/ha; S. rostrata, Root Inoc.; S. rostrata, stem Inoc.; S. rostrata, Root + stem Inoc. Results showed that stem nodulation was enhanced by stem inoculation alone, while root nodulation was by root inoculation alone. Combination of the two inoculations was found to reduce stem or root nodulation because of the competition for soluble carbon source. Green manure crop (S. rostrata) when inoculated with rhizobia either on the root, stem or root + stem increased N2 uptake and total N2 fixation. On the other hand, green manuring of corn with root or stem inoculated S. rostrata resulted to increments in total biomass production and nitrogen uptake. In the pot experiment, it was observed that the growth of rice green manured with S. rostrata produced 2.5x as much fill
