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| Titel: |
Layer and broiler poultry manure as nitrogen fertilizer sources for cabbage production |
| Auteur: |
Rubeiz, I. G. Sabra, A. S. Al-Assir, I. A. Farran, M. T. |
| Verschenen in: |
Communications in soil science and plant analysis |
| Paginering: | Jaargang 24 (1993) nr. 13-14 pagina's 1583-1589 |
| Jaar: |
1993-08 |
| Inhoud: |
Floor litter from one-year-old laying hens (LHM) and from eight-week-old broiler chickens (BCM) were incorporated in the soil of two fields and evaluated as nitrogen (N) sources for cabbage production on a non nutrient-depleted soil. LHM had 3.4% moisture, 3.84% N and 3.41% phosphorus (P). BCM had 2.3% moisture, 4.46% N and 2.19% P. Field 1 recieved 2.4 t/ha BCM, 3.0 t/ha LHM, whereas Field 2 recieved 4.8 t/ha BCM and 6.1 t/ha LHM. Also, each field received ammonium sulfate [(NH4)2SO4] at a N rate of 100 kg/ha and an unfertilized control treatment. The manure was applied one week before cabbage transplanting on 18 May 1992. Ammonium sulfate was applied in two equal split applications during the growing season. Leaf nitrate-nitrogen (NO3-N) was higher at harvest in plants receiving the higher manure rate than in other treatments (P<0.05). Leaf phosphate (PO4-P) was higher in early season in plants receiving LHM at both Tates than in other treatments. Soil BD, EC, NO3-N, and P at harvest were not affected by the treatments (P>0.05). Soil pH was reduced by the LHM in comparison to other treatments (P<0.05). Yield was comparable among all treatments (P>0.05) . It may be concluded that low application rates of LHM and BCM are equally effective in supplying the N requirements of cabbage, with BCM recommended when only N is limiting, and LHM when P is limiting. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 13 van 26 gevonden artikelen
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