Plant response to evapotranspiration and soil water sensor irrigation scheduling methods for papaya production in south Florida

Migliaccio, Kati W.; Schaffer, Bruce; Crane, Jonathan H.; Davies, Frederick S.

doi:10.1016/j.agwat.2010.04.012

Cited by 61 publications

(27 citation statements)

References 32 publications

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“…The reason of this phenomenon was mainly for the amount of evaporation and drainage below root zone in silty loam soil were larger than silty clay loam and silty clay soils, which indicated more irrigation water and less interval between irrigation and sowing were necessary in field with silty loam soil. However, constraint conditions for determining optimal irrigation strategy would be more complicate if we focus on the whole crop growth period for some other factors such as root water uptake and water and salt stress should be taken into consideration [39,40]. Although in conditions of before sowing like our study, factors such as field slope, farming practices (eg tillage, no tillage, and plastic mulched) will also affect the soil water, salt, and NO 3 --N distributions after irrigation [41] and these might be 2D/3D issues and will be studied in our future work.…”

Section: Irrigation Strategies Determinationmentioning

confidence: 99%

Effects of Different Irrigation Strategies on Soil Water, Salt, and Nitrate Nitrogen Transport

Zeng

et al. 2015

Ecological Chemistry and Engineering S

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Abstract:Intermittent irrigation has attracted much attention as a water-saving technology in arid and semi-arid regions. For understanding the effect of intermittent irrigation on water and solute storage varied from irrigation amount per time (IRA), irrigation application frequency (IRAF), irrigation intervals (IRI) and even soil texture (ST), intermittent irrigation experiment was carried out in 33 micro-plots in Inner Mongolia, China. The experiment results were used for the calibration and validation of HYDRUS-1D software. Then 3 ST (silty clay loam, silty loam, and silty clay), 5 IRA (2, 4, 6, 8, and 10 cm), 4 IRAF (2, 3, 4, and 5 times) and 4 IRI (1, 2, 3, and 4 days) were combined and total 240 scenarios were simulated by HYDRUS-1D. Analysis of variance (ANVOA) of simulated results indicated that ST, IRA, and IRAF had significant effect on salt and nitrate nitrogen (NO3 --N) storage of 0-40 cm depth soil in intermittent irrigation while only ST affected soil water storage obviously. Furthermore, salt leaching percentage (SLP) and water use efficiency (WUE) of 0-40 cm depth were calculated and statistical prediction models for SLP were established based on the ANOVA using multiple regression analysis in each soil texture. Then constraint conditions of soil water storage (around field capacity), salt storage (smaller than 168 mg·cm -2 ), WUE (as large as possible) in 0-40 cm depth and total irrigation water amount (less than 25 cm) were proposed to find out the optimal intermittent irrigation strategies. Before sowing, the optimal irrigation strategy for silty clay loam soil was 6 cm IRA, 3 times IRAF, and 2 days IRI respectively. For silty loam and silty clay soils, IRA, IRAF, and IRI were 8 cm, 3 times, and 2 days respectively.

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Section: Irrigation Strategies Determinationmentioning

confidence: 99%

Effects of Different Irrigation Strategies on Soil Water, Salt, and Nitrate Nitrogen Transport

Zeng

et al. 2015

Ecological Chemistry and Engineering S

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“…In Israel, Meron et al (2001) reported that irrigating apple (Malus domestica) at a soil suction of 15-25 kPa resulted in annual water saving of 500-650 mm compared with ET-based irrigation scheduling. For papaya in calcareous soil of southern Florida, Migliaccio et al (2010) reported water savings of 64-69% using automated tensiometers set at 10, 15, or 25 kPa compared with irrigating based on a set schedule.…”

Section: Introductionmentioning

confidence: 97%

“…Practices that enhance fertilizer utilization efficiency include appropriate timing of fertilizer applications, formulation of the fertilizer material, amount and rate of fertilizer applied, and methods used to apply fertilizers. Efficient irrigation methods such as irrigating based on crop evapotranspiration (ET) or soil water sensors minimize over-irrigation while not affecting yields (Silva et al 2009;Migliaccio et al 2010) and subsequently reducing nutrient leaching.…”

Section: Introductionmentioning

confidence: 99%

Water savings, nutrient leaching, and fruit yield in a young avocado orchard as affected by irrigation and nutrient management

et al. 2011

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This project was designed to determine the effect of fertilizer rate and irrigation scheduling on water use, nutrient leaching, and fruit yield of young avocado trees (Persea americana Mill. cv. Simmonds). Seven nutrient and irrigation management practices were evaluated: (1) irrigation based on crop evapotranspiration (ET) with 50% fertilizer at a standard rate (FSR); (2) ET irrigation with FSR (typical for avocado production in the area); (3) ET irrigation with 200% FSR; (4) irrigation based on exceedance of 15-kPa (SW) soil water suction with 50% FSR; (5) SW with FSR; (6) SW with 200% FSR; and (7) irrigation at a set schedule (based on timing and frequency typically used in local avocado production) with FSR. The SW with FSR treatment saved 87% of the water volume applied and reduced total phosphorus leached by 74% compared to the set schedule irrigation with FSR. The SW with FSR treatment had higher avocado fruit production, tree water-use efficiency, and fertilizer-use efficiency than the other six treatments. Thus, the use of soil water monitoring for irrigation management can substantially increase sustainability of young avocado orchards in southern Florida.

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“…An electromagnetic sensor to measure soil moisture was the basis for developing an irrigation system at a savings of 53% of water compared with irrigation by sprinklers in an area of 1000m 2 of pasture [4]. A reduction in water use under scheduled systems also have been achieved, using soil sensor and an evaporimeter, which allowed for the adjustment of irrigation to the daily fluctuations in weather or volumetric substrate moisture content [5].…”

Section: Introductionmentioning

confidence: 99%

Self-controlled irrigation system

Bhattacharya¹,

Chakraborty²,

Roy³

et al. 2017

EESRJ

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Farming is a major occupation for many people in countries like India, and it is the life line for entire population of the world. Water is the backbone of the farming industry. As per India is censured, lots of water gets wasted due to many reasons. Smart Irrigation System serves a way to minimize this wastage of water in agricultural fields. The system incorporates the features of IoT. The supply of water in the fields is controlled by sensing the requirement of water in the fields using various sensors and switching the pump on and off automatically according to the requirement.

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Plant response to evapotranspiration and soil water sensor irrigation scheduling methods for papaya production in south Florida

Cited by 61 publications

References 32 publications

Effects of Different Irrigation Strategies on Soil Water, Salt, and Nitrate Nitrogen Transport

Effects of Different Irrigation Strategies on Soil Water, Salt, and Nitrate Nitrogen Transport

Water savings, nutrient leaching, and fruit yield in a young avocado orchard as affected by irrigation and nutrient management

Self-controlled irrigation system

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