Effect of utilizing a combination of cow and chicken manures as organic fertilizer in fish pond
An experiment was conducted utilizing twenty 40m2 ponds to investigate the effect of a combination of cow and chicken manures at the following ratios : 1000 kg/ha chicken manure : 3000 kg/ha cow manure ; 1000 kg/ha chicken manure : 1000 kg/ha cow manure ; 2000 kg/ha chicken manure only ; 4000 kg/ha...
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| Định dạng: | Luận văn |
| Ngôn ngữ: | English |
| Được phát hành: |
1986
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| Những chủ đề: |