Yard Trimmings as a Source of Nitrogen for Crop Production
| Autor: | Craig G. Cogger, Andy I. Bary, Elizabeth A. Myhre |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Compost Science & Utilization. 12:11-17 |
| ISSN: | 2326-2397 1065-657X |
| DOI: | 10.1080/1065657x.2004.10702152 |
| Popis: | Yard trimmings from sources rich in grass clippings have the potential to supply nutrients for crop production. Our objectives were to estimate N availability from yard trimmings and determine their effects on crop production, soil nutrients, and organic matter levels. We conducted a field experiment, comparing three consecutive years of yard trimmings applications (22, 44, or 66 Mg ha−1 yr−1 dry weight) with inorganic N (112 kg N ha−1 yr−1) and zero-N controls in a silage corn (Zea mays L.) - winter triticale (Triticosecale spp.) rotation. The yard trimmings were screened and ground, and allowed to heat for a short period. They were incorporated each spring before planting corn. We measured crop yield and N uptake, and estimated apparent N recovery (ANR). We measured soil inorganic N two weeks after yard trimmings application and after corn harvest. In a one-year on-farm demonstration, we compared three sources of yard trimmings applied at a single rate. Yard trimmings applied at 44 Mg ha−1 dry weight pr... |
| Databáze: | OpenAIRE |
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