Abstract
This research project deals with the end use of two nitrogen fertilizers applied to a rice crop. The experiment was carried out in a greenhouse, using urea (1.973% N/sup 15/ atom content) and ammonia sulfate (1.826% N/sup 15/atom content). Fertilizers were applied in four levels (0 to 300 Kg/ha) at sowing and 30 days after budding on flower pots containing 30 Kg. of soil. Results indicate that production of dry vegetable material presents no significant differences in regard to application time or nitrogen source, but it does in relation to applied levels. The efficiency in fertilizers use changed between 16 and 54%, showing highly significant differences, in relation to source, level and time of application. At the end of the experiment, in the plant-soil system, about 39% to 81% of the applied nitrogen was recovered, given higher losses when urea was as a source, and depending on the time of application.
Citation Formats
Bastidas, O G, Alvarez, A L, Victoria, R L, Muraoka, T, and Urquiaga, S.
Fate of /sup 15/N-Urea and /sup 15/N-Ammonia sulfate applied in different times to rice crops, variety CICA-8, under greenhouse conditions.
Colombia: N. p.,
1986.
Web.
Bastidas, O G, Alvarez, A L, Victoria, R L, Muraoka, T, & Urquiaga, S.
Fate of /sup 15/N-Urea and /sup 15/N-Ammonia sulfate applied in different times to rice crops, variety CICA-8, under greenhouse conditions.
Colombia.
Bastidas, O G, Alvarez, A L, Victoria, R L, Muraoka, T, and Urquiaga, S.
1986.
"Fate of /sup 15/N-Urea and /sup 15/N-Ammonia sulfate applied in different times to rice crops, variety CICA-8, under greenhouse conditions."
Colombia.
@misc{etde_5005956,
title = {Fate of /sup 15/N-Urea and /sup 15/N-Ammonia sulfate applied in different times to rice crops, variety CICA-8, under greenhouse conditions}
author = {Bastidas, O G, Alvarez, A L, Victoria, R L, Muraoka, T, and Urquiaga, S}
abstractNote = {This research project deals with the end use of two nitrogen fertilizers applied to a rice crop. The experiment was carried out in a greenhouse, using urea (1.973% N/sup 15/ atom content) and ammonia sulfate (1.826% N/sup 15/atom content). Fertilizers were applied in four levels (0 to 300 Kg/ha) at sowing and 30 days after budding on flower pots containing 30 Kg. of soil. Results indicate that production of dry vegetable material presents no significant differences in regard to application time or nitrogen source, but it does in relation to applied levels. The efficiency in fertilizers use changed between 16 and 54%, showing highly significant differences, in relation to source, level and time of application. At the end of the experiment, in the plant-soil system, about 39% to 81% of the applied nitrogen was recovered, given higher losses when urea was as a source, and depending on the time of application.}
journal = []
volume = {1:1}
journal type = {AC}
place = {Colombia}
year = {1986}
month = {Jan}
}
title = {Fate of /sup 15/N-Urea and /sup 15/N-Ammonia sulfate applied in different times to rice crops, variety CICA-8, under greenhouse conditions}
author = {Bastidas, O G, Alvarez, A L, Victoria, R L, Muraoka, T, and Urquiaga, S}
abstractNote = {This research project deals with the end use of two nitrogen fertilizers applied to a rice crop. The experiment was carried out in a greenhouse, using urea (1.973% N/sup 15/ atom content) and ammonia sulfate (1.826% N/sup 15/atom content). Fertilizers were applied in four levels (0 to 300 Kg/ha) at sowing and 30 days after budding on flower pots containing 30 Kg. of soil. Results indicate that production of dry vegetable material presents no significant differences in regard to application time or nitrogen source, but it does in relation to applied levels. The efficiency in fertilizers use changed between 16 and 54%, showing highly significant differences, in relation to source, level and time of application. At the end of the experiment, in the plant-soil system, about 39% to 81% of the applied nitrogen was recovered, given higher losses when urea was as a source, and depending on the time of application.}
journal = []
volume = {1:1}
journal type = {AC}
place = {Colombia}
year = {1986}
month = {Jan}
}