dc.contributor.author |
Tajuddin, E |
|
dc.contributor.author |
Abdul Salam, M |
|
dc.contributor.author |
Shahul Hameed, S M |
|
dc.contributor.author |
Yageen Thomas |
|
dc.contributor.author |
Devandesan, S |
|
dc.date.accessioned |
2019-01-31T05:53:09Z |
|
dc.date.available |
2019-01-31T05:53:09Z |
|
dc.date.issued |
1990 |
|
dc.identifier.citation |
Agricultural Research Journal of Kerala, 28(1), 31-35. |
en_US |
dc.identifier.uri |
http://hdl.handle.net/123456789/3700 |
|
dc.description.abstract |
Field experiments conducted for a period of seven years to study the effect of
continuous application of fertilizer nutrients on the long term productivity of a rice based
cropping system revealed that nitrogen application increased grain yield in all the seasons
for a period of seven years. Both the physical and economic optimum dose of N decreased
@ 4.06 and 3.7% per season, respectively. Nitrogen application @ zero and 120 kg/ha per
season continuously over a period of five years, decreased the grain yield @ 1.47 and 1.28
g/ha/year, respectively. But application of N @ 40 kg/ha during the same period increased
grain yield 6 1.22 q/ha/year. The productivity of plots applied with N @ 80 kg/ha remained
stable. The study clearly revealed the possibility of skipping P for four years and K for
seven years in soils containing medium amounts of these nutrients. Application of N at
optimum dose is important to maintain the long term productivity of a rice based cropping
system involving rice-rice-fallow. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Kerala Agricultural University |
en_US |
dc.subject |
Rice cropping system |
en_US |
dc.subject |
effect of nitrogen in rice cropping |
en_US |
dc.subject |
effect of phosphorus in rice cropping |
en_US |
dc.title |
Effect of continuous application of fertilizer nutrients on the long term productivity of a rice cropping system |
en_US |
dc.type |
Article |
en_US |