Nutrient balances for cassava cultivation in Kampong Cham province in Northeast Cambodia
In Cambodia, cassava is mostly grown with little or no fertilizer inputs, but the magnitudes of nutrient balances are not known. This study was conducted to assess nutrient balances for cassava cultivation in Kampong Cham province in Northeast Cambodia. Forty five households in four cassava produ...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
2011
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/43896 |
| _version_ | 1855518773901000704 |
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| author | Sopheap, U Patanothai, A Aye, Tin Maung |
| author_browse | Aye, Tin Maung Patanothai, A Sopheap, U |
| author_facet | Sopheap, U Patanothai, A Aye, Tin Maung |
| author_sort | Sopheap, U |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In Cambodia, cassava is mostly grown with little or no fertilizer inputs, but the
magnitudes of nutrient balances are not known. This study was conducted to assess
nutrient balances for cassava cultivation in Kampong Cham province in Northeast
Cambodia. Forty five households in four cassava production zones were
interviewed in relation to their cultural practices and crop residue management,
upon which sources of nutrient inputs and outputs were based. Chemical fertilizer,
manure, planting materials and rainfall were the defined inputs, while cassava roots
and stumps were the outputs. Crop cutting was undertaken in the cassava fields of
the 45 households to obtain weights of roots and other plant parts. Nutrient
balances were calculated for the individual fields based on nutrient contents of the
component sources obtained from the literatures. The results showed negative
balances for all the nutrients evaluated. The imbalances were most serious for N, K
and Ca with the averages of -64.45 kg N, -52.83 kg K and -10.83 kg Ca ha-1, but
were less serious for P and Mg with the averages of -2.85 kg P and -7.20 kg Mg ha-1.
These negative balances were the consequence of low nutrient inputs in current
practices where only a few farmers applied low rates of chemical fertilizer or
manure. Continued use of current practices will threaten the sustainability of
cassava production in Cambodia. For long term productivity of the crop, the
application of organic manures together with lime and chemical fertilizers high in
N and K is recommended. |
| format | Journal Article |
| id | CGSpace43896 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2011 |
| publishDateRange | 2011 |
| publishDateSort | 2011 |
| record_format | dspace |
| spelling | CGSpace438962023-02-15T05:12:17Z Nutrient balances for cassava cultivation in Kampong Cham province in Northeast Cambodia Sopheap, U Patanothai, A Aye, Tin Maung soil fertility fertilization nitrogen potassium organic fertilizers yields manihot esculenta In Cambodia, cassava is mostly grown with little or no fertilizer inputs, but the magnitudes of nutrient balances are not known. This study was conducted to assess nutrient balances for cassava cultivation in Kampong Cham province in Northeast Cambodia. Forty five households in four cassava production zones were interviewed in relation to their cultural practices and crop residue management, upon which sources of nutrient inputs and outputs were based. Chemical fertilizer, manure, planting materials and rainfall were the defined inputs, while cassava roots and stumps were the outputs. Crop cutting was undertaken in the cassava fields of the 45 households to obtain weights of roots and other plant parts. Nutrient balances were calculated for the individual fields based on nutrient contents of the component sources obtained from the literatures. The results showed negative balances for all the nutrients evaluated. The imbalances were most serious for N, K and Ca with the averages of -64.45 kg N, -52.83 kg K and -10.83 kg Ca ha-1, but were less serious for P and Mg with the averages of -2.85 kg P and -7.20 kg Mg ha-1. These negative balances were the consequence of low nutrient inputs in current practices where only a few farmers applied low rates of chemical fertilizer or manure. Continued use of current practices will threaten the sustainability of cassava production in Cambodia. For long term productivity of the crop, the application of organic manures together with lime and chemical fertilizers high in N and K is recommended. 2011 2014-10-02T08:32:54Z 2014-10-02T08:32:54Z Journal Article https://hdl.handle.net/10568/43896 en Open Access |
| spellingShingle | soil fertility fertilization nitrogen potassium organic fertilizers yields manihot esculenta Sopheap, U Patanothai, A Aye, Tin Maung Nutrient balances for cassava cultivation in Kampong Cham province in Northeast Cambodia |
| title | Nutrient balances for cassava cultivation in Kampong Cham province in Northeast Cambodia |
| title_full | Nutrient balances for cassava cultivation in Kampong Cham province in Northeast Cambodia |
| title_fullStr | Nutrient balances for cassava cultivation in Kampong Cham province in Northeast Cambodia |
| title_full_unstemmed | Nutrient balances for cassava cultivation in Kampong Cham province in Northeast Cambodia |
| title_short | Nutrient balances for cassava cultivation in Kampong Cham province in Northeast Cambodia |
| title_sort | nutrient balances for cassava cultivation in kampong cham province in northeast cambodia |
| topic | soil fertility fertilization nitrogen potassium organic fertilizers yields manihot esculenta |
| url | https://hdl.handle.net/10568/43896 |
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