TY - JOUR AU - Rojas-Acuña, Luis Antonio AU - Camacho-Buberth, Gerardo PY - 2004/08/19 Y2 - 2024/03/29 TI - Pineapple (Ananas comosus L. Merr) cultivation under minimum tillage and conventional tillage in San Carlos, Costa Rica. JF - Agronomía Mesoamericana JA - Agron. Mesoam. VL - 15 IS - 2 SE - Articles DO - 10.15517/am.v15i2.11896 UR - https://revistas.ucr.ac.cr/index.php/agromeso/article/view/11896 SP - 161-172 AB - <p>The establishment and development of a</p><p>pineapple cultivation sowed in minimum tillage and</p><p>conventional tillage was evaluated in San Carlos, Costa Rica.</p><p>The work carried out consisted of a description of the</p><p>preparation of the land, and an analysis of organic matter,</p><p>microorganisms and arthropods, nematodes, and mortality of</p><p>plants; an analysis of production costs was also made. The</p><p>conventional preparation of soil was carried out between four</p><p>and five months after paraquat application, while in</p><p>minimum tillage the time preparation of soil was of two</p><p>months after herbicide application. Also, in minimum tillage</p><p>the residues of the previous plantation deposited in the</p><p>internal streets can serve as a source of inoculum of pests and</p><p>diseases, besides hindering the drainage. The population of</p><p>microorganisms (bacterias, actinos and fungi) was higher in</p><p>minimum tillage. In the analysis of arthropods, the</p><p>conventional tillage showed higher populations of Oribatida</p><p>and Collembola, while in minimum tillage there was a larger</p><p>population of mites and larvae of Elateridae; the population</p><p>of Scarabeidae was similar in both tillage systems. The</p><p>population of nematodes in soils and roots was also relatively</p><p>low. The main cause of plant mortality was due to diseases</p><p>known as “rots” caused by the complex Phytophthora-</p><p>Erwinia; but the incidence was low in both tillage systems.</p><p>No significant differences were observed in plant height</p><p>either. The costs of preparation of the land in minimum</p><p>tillage were 50 % lower than those of the conventional tillage.</p> ER -