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Details van artikel 4 van 13 gevonden artikelen
| Titel: |
Differential growth responses of agaves to nitrogen, phosphorus, potassium, and boron applications |
| Auteur: |
Nobel, P. S. Quero, E. Linares, H. |
| Verschenen in: |
Journal of plant nutrition |
| Paginering: | Jaargang 11 (1988) nr. 12 pagina's 1683-1700 |
| Jaar: |
1988-12 |
| Inhoud: |
Nutrient effects on the growth of Crassulacean acid metabolism plants have received little attention. Agave deserti and A. lechuguilla were therefore selected for study because their rate of leaf unfolding from the central spike relates closely to growth, thus providing a convenient means for monitoring the effect of nutrient applications. The greater fractional influence of nitrogen fertilization on leaf unfolding for A. deserti can be explained by its lower soil level of N than for A. lechuguilla; high application levels of N near 500 kg ha-1 proved slightly inhibitory compared with 100 kg N ha-1 during the first year after application but not during the second year for A. deserti. Agave deserti occurred in soils much higher in phosphorus, potassium, and boron than for A. lechuguilla; consistent with this, application of these three nutrients in the field had little influence on the rate of leaf unfolding for A. deserti tut could significantly increase the leaf unfolding rate for A. lechuguilla. Applications of nutrient levels that greatly stimulated leaf unfolding for A, lechuguilla, such as 100 kg N ha-1 or 500 kg P ha-1 , led to large increases in net COg uptake over 2k h; applications of 500 kg K ha-1 or 100 kg B ha"1 led to lower enhancements in CO2 uptake and in the leaf unfolding rate, but again prevented any major decrease in net COg rate during the night. In agreement with studies on other CAM plants, the macronutrients N, P, and K and the micronutrient B can enhance the growth of agaves, depending on the relative level of these nutrients in the soil. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 4 van 13 gevonden artikelen
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