ISHS Acta Horticulturae 700: International Symposium Towards Ecologically Sound Fertilisation Strategies for Field Vegetable Production
RESPONSE OF GREENHOUSE PEPPER CROP TO FERTILIZER LEVELS AND DIFFERENT QUALITIES OF IRRIGATION WATER |
| Authors: | J.L. Contreras, P. Galindo, J.J. Catala, M.L. Segura |
| Keywords: | Capsicum annuum, fertigation, sand-mulch, salinity, uptake, NPK |
| DOI: | 10.17660/ActaHortic.2006.700.33 |
| Abstract:
This work studies the effect of different nitrogen-phosphorous-potassium (NPK) dosages applied by fertigation and two types of irrigation water on the soil-plant system of a pepper crop in greenhouse conditions. The experiment was conducted on a greenhouse ‘California’ pepper crop, on a sand-mulched sandy loam soil and trickle irrigation. Six different treatments were established, three rates of NPK applied by fertigation and two types of water (0.7 and 2.6 dS m-1). The amount of applied NPK in the different treatments is equivalent to 0, 50 and 100% of the total concentration extracted by the crop. The pepper crop shows a positive response to an increase of NPK concentration in the nutrient solution; however when water of high salinity and a 100% fertilization level is used, the tolerance of the crops is reduced and the size of the fruit is negatively affected. | |
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