Irrigation Regimes Affect Yield and Water Use by Bell Pepper

Abstract

<jats:p>`Keystone Resistant Giant' bell pepper (<jats:italic>Capsicum annuum</jats:italic> L.) was grown in drainage lysimeters under controlled soil water regimes during 1982, 1984, and 1985. Three irrigation regimes were imposed on bell pepper grown on two soil types during spring and fall growing seasons. Irrigation regimes consisted of applying water when the soil water tension at 10 cm exceeded 25, 50, or 75 kPa during crop growth. Yields and water use were greatest when irrigation was applied at 25 kPa. Regression equations are presented to describe the relationships of water use to plant age and to compute the ratios of daily evapotranspiration to pan evaporation (crop factors) for bell pepper grown under the three irrigation regimes.</jats:p>

Acclimations to light quality on plant and leaf level affect the vulnerability of pepper (Capsicum annuum L.) to water deficit

“…Due to the wide transpiring leaf surface and high stomatal conductance, pepper has high water requirements, and is therefore a good model plant for drought stress experiments (Alvino et al 1994;Doorenbos and Kassam 1986). The sensitivity of pepper to water deficit is demonstrated in a large number of publications dealing with physiological responses as well as plant growth and biomass production (Delfine et al 2001;De Pascale et al 2003;González-Dugo et al 2007;Ferrara et al 2011;Kulkarni and Phalke 2009;Sezen et al 2006;Smittle et al 1994;Sziderics et al 2010). In addition, findings demonstrate the sensitivity of pepper plants to light quality, including light-induced alterations in plant growth, dry matter partitioning and anatomical features of leaves and stems (Brown et al 1995;Schuerger et al 1997).…”

Modeling of transpiration of paprika (Capsicum annuum L.) plants based on radiation and leaf area index in soilless culture

“…Since it is considered one of the most susceptible crops to water stress in horticulture (Smittle et al, 1994), adequate irrigation is essential for production of high-quality paprika fruits. Effect of water stress has been documented in several reports that studied yield reductions (Antony and Singadhupe, 2004;Moreno et al, 2003;Sezen et al, 2006).…”

The Relationship Between Soil Water Potential, Environmental Factors, and Plant Moisture Status for Poblano Pepper Grown Using Tensiometer-Scheduled Irrigation

“…The irrigation systems also provided a range of soil moisture conditions, which were similar to previously suggested regimes (Hedge, 1988;Smittle et al, 1994;Thompson et al, 2007b). This was done to determine relationships among S , climate variables, and plant water status in efficiently managed but non-drought-stressed systems.…”

“…Excavation of pepper plants and intact roots after harvest indicated that maximum rooting depth of peppers ranged from 13 to 23 cm, with 90% of roots residing above a depth of 15 cm. On/off set points for the five irrigation treatments were chosen based on previously determined thresholds (Hedge, 1988;Smajstrla and Locascio, 1996;Smittle et al, 1994;Thompson et al, 2007b) and were as follows: automated irrigation, −30/−25, −40/−35, −50/−45, −60/−55 kPa; manual irrigation, −50/−10 kPa. Irrigation treatments were implemented on 28 June 2010 after plants were established.…”

“…Threshold values for soil moisture have been developed for vegetable crops such as tomato and pepper in a variety of soils and production systems (Hedge, 1988;Smajstrla and Locascio, 1996;Smittle et al, 1994). The goal often, though not always, is to develop an irrigation regime that uses the least amount of water necessary to maintain optimum yields but not necessarily the highest level of water use efficiency.…”