EFFECTS OF SOIL MANAGEMENT AND WATER REGIME ON BANANA GROWTH BETWEEN PLANTING AND FLOWERING. SIMULATION USING THE STICS MODEL
| Autor: | Harry Ozier Lafontaine, N. Brisson, Marc Dorel |
|---|---|
| Přispěvatelé: | Unité de bioclimatologie, Institut National de la Recherche Agronomique (INRA), Unité de Recherche AgroPédoClimatique de la zone caraïbe (APC) |
| Rok vydání: | 1998 |
| Předmět: |
0106 biological sciences
[SDV]Life Sciences [q-bio] F62 - Physiologie végétale - Croissance et développement Déficit hydrique du sol Root system 01 natural sciences Système racinaire Soil management Absorption de substances nutritives ComputingMilieux_MISCELLANEOUS 2. Zero hunger 04 agricultural and veterinary sciences Tillage Geography [SDE]Environmental Sciences Crop simulation model Irrigation Labour Azote Horticulture Stress Diagnostic P10 - Ressources en eau et leur gestion Croissance Conventional tillage BANANIER P30 - Sciences et aménagement du sol Sowing Musa Modèle de simulation 15. Life on land Gestion du sol Travail profond du sol Agronomy Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries 010606 plant biology & botany |
| Zdroj: | Acta Horticulturae International Symposium International Symposium, Nov 1997, Tenerife, Spain Proceedings of the first international symposium on banana in the subtropics |
| ISSN: | 2406-6168 0567-7572 |
| DOI: | 10.17660/actahortic.1998.490.23 |
| Popis: | We compare the effects of minimum and conventional tillage on banana growth, under irrigated and rain-fed conditions. Measurements of leaf growth, root length density and soil water depletion were made. We used a crop simulation model to understand and explain the differential behavior of banana plants in the experiments. Our approach consisted of (i) an adaptation of the STICS model, initially developed for temperate crops, to the banana crop grown under tropical conditions and (ii) use of the integrative ability of the model to identify the respective roles of irrigation and tillage. The adaptation of the model concerned the phasic development, and leaf and root growth. Some specific characteristics of the tropical environment were also introduced. The model points out that under irrigated conditions crop water requirements were always satisfied whatever the tillage depth. In that case, the difference in terms of leaf growth and yield between shallow and deep tillage treatments can be explained by the nitrogen deficit due to a poor root system. Rain-fed crops suffered from water shortage, but the increase in soil exploration, allowed by conventional tillage, compensated for the absence of irrigation. This work improves knowledge of the agro-physiology of the banana crop. It demonstrates the fundamental part played by the root system, which appears as an important limiting factor for a correct water and nutrient supply. It provides an opportunity to elaborate a global model for the banana crop. (Resume d'auteur) |
| Databáze: | OpenAIRE |
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