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| Registros recuperados: 112 | |
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| Carter, David L.. |
| National concern about nitrate contamination of groundwater is raisin g many questions about the use of nitrogen fertilizer to grow high-quality crops. Some extremists are suggesting that commercial inorganic nitrogen fertilization should not be permitted. Such a limitation would seriously reduce crop productivity and farming profitability. We hope that it does not occur. However, the farming industry has become somewhat careless in nitrogen management because nitrogen fertilizer has been relatively cheap for the past couple of decades. Commonly, "a little extra nitrogen" has been applied to assure against a deficiency and less than maximum yield. in recent years. sugar beet growers have learned that such a practice can be costly because high... |
| Tipo: Article |
Palavras-chave: Practical farm efficiency; Mass Import - autoclassified (may be erroneous). |
| Ano: 1990 |
URL: http://eprints.nwisrl.ars.usda.gov/1228/1/698.pdf |
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| Registros recuperados: 112 | |
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