Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 425015
Title Irrigation Scheduling for Green Bell Peppers Using Capacitance Soil Moisture Sensors
Author(s) Zotarelli, L.; Dukes, M.D.; Scholberg, J.M.S.; Femminella, K.; Munoz-Carpena, R.
Source Journal of Irrigation and Drainage Engineering-Asce 137 (2011)2. - ISSN 0733-9437 - p. 73 - 81.
Department(s) Biological Farming Systems
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) subsurface drip irrigation - tomato root distribution - water-use efficiency - nitrogen uptake - night temperature - processing tomato - plastic mulch - sandy soils - yield - time
Abstract Vegetable production areas are intensively managed with high inputs of fertilizer and irrigation. The objectives of this study were to evaluate the interaction between N-fertilizer rates and irrigation scheduling using soil moisture sensor irrigation controllers (SMS) on yield, irrigation water use efficiency (IWUE) of bell pepper cultivated under plastic mulch and drip irrigation. Treatments included three irrigation scheduling and three N-rates (176, 220, and 330 kg/ha). Irrigation treatments were: SS(10), water application controlled by SMS-based irrigation set at 10% volumetric water content (VWC) which was allotted five irrigation windows daily and bypassed events if the soil VWC exceeded the established threshold; SS(12), threshold set at 12% VWC; and TIME, control with irrigation being applied once a day similar to grower irrigation management. Marketable yields ranged between 16 and 29 Mg/ha. The SMS treatments reduced the applied irrigation in 7 to 62% compared to TIME treatment without reducing yield. The treatments SS(10) and SS(12) reduced nitrate leaching by 25 to 73% compared to TIME treatment.
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