ABSTRACT Pineapple is a nutrient-demanding plant and information regarding the amounts accumulated in its organs is essential in decision-making for management practices and fertilization recommendations. This study aimed to determine the macronutrient absorption during the plant cycle of pineapple cv. BRS Imperial that was cultivated in sandy loam soil with and without plastic mulch cover. Plants were grown at a spacing of 0.9 × 0.4 × 0.4 m, 38,460 plants per hectare, irrigated by drip and fertilized according to soil […]

In vitro propagation of pineapple produces uniform and disease-free plantlets, but requires a long period of acclimatization before transplanting to the field. Quicker adaptation to the ex vitro environment and growth acceleration of pineapple plantlets are prerequisites for the production of a greater amount of vigorous, well-rooted planting material. The combination of humic acids and endophytic bacteria could be a useful technological approach to reduce the critical period of acclimatization. The aim of this study was to evaluate the initial […]

Pineapple (Ananas comosus L. Merrill) in vitro propagation results in the production of a large quantity of healthy and homogeneous plantlets. Despite these advantages, the long time required for acclimatization makes this agricultural practice too costly. Growth acceleration of plantlets by inoculation with endophytic and epiphytic diazotrophic bacteria may be useful to reduce this period. The objectives of this study were to evaluate the potential of 20 diazotrophic bacteria strains in synthesizing indole, solubilizing Ca phosphate and Zn oxide and […]

The nutritional demand of pineapple plants is higher than for other crops and IT depends on cultivar, fruit weight, production destination and planting density and cultivation system. However, the variation in these factors is not always taken into account in fertilization tables. The purpose of this study was to propose a fertilizer and lime recommendation system for pineapple designated FERTCALC-Abacaxi, based on systematization and modeling of literature data and the current knowledge concerning fertilization and mineral nutrition of the crop. […]

The acclimatization of pineapple plantlets propagated by plant tissue culture is slow. The intensification of root growth by the use of humic acids may be useful during this process. The aim of this study was to evaluate the greenhouse acclimatization of ‘Vitória’ pineapple propagated by plant tissue culture in response to different doses of humic acids isolated from vermicompost and filter cake. Leaf anatomy, photosynthetic pigment content, shoot and root growth, and leaf nutrients were evaluated. An increase in growth […]