Crop yield response to water - Cra

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Figure 8 Water production function for apple (cv. Golden Smoothee) based on total yield obtained inLleida, Spain (Girona, unpublished).1.21.0Total yield0.8Relative yield0.60.40.20.00.00.20.40.6 0.8 1.01.2Relative ETFigure 9Water production function for apple (cv. Golden Smoothee) based on marketable yieldobtained in Lleida, Spain (Girona, unpublished).1.2Marketable yield1.00.8Relative yield0.60.40.20.00.00.20.40.6 0.8 1.01.2Relative ET342crop yield response to water
Figure 10Response of marketable fruit yield (>70 mm) and revenue of Golden Delicious apple toirrigation rates (average seasonal reference ET o K c ) at various crop levels (1 250 tree/ha).Different irrigation rates were applied from mid-June to harvest – K c values were 0.44, 0.65,0.84, 1.01, and 1.19; seasonal ET o (1/5-1/11) was 1 172 mm.91 182 286 424Crop yield >70 mm (tonne/ha)10080604020Fruit/treeRevenue *1 000 in US$/ha1401201008060402000.0 0.2 0.4 0.6 0.8Average seasonal crop coefficient00.0 0.2 0.4 0.6 0.8Average seasonal crop coefficientSuggested RDI RegimesGiven the growth patterns of the apple, and the sensitivity of fruit size to water deficits, itappears that only mild water deficits may be applied to this crop, when grown for fresh market,without impacting negatively on farmers’ income. However, RDI has some positive effects onquality that should be exploited, in particular in water scarcity situations. The objective of appleirrigation management under suboptimal water allocation would be to minimize damage andmaximize irrigation water productivity. If a small reduction in supply is considered, it should occurpreferably during the postharvest period. In common varieties that are harvested in September(Northern Hemisphere) it leaves some period of irrigation up to the start of leaf senescence, aperiod that will be shorter with increasing latitude. In water shortage conditions one can skipthe postharvest irrigation for common varieties but that should not be done in early maturingvarieties that have long postharvest period. If water shortages exceed the level equivalent tothe amount used for postharvest irrigation, growers should apply the deficit on a continuousbasis after the early fruit growth period (avoid stress in the first 30 to 60 days after fruit set,depending on variety), and adjust the crop load by thinning to ensure that the remaining fruitwill reach commercial size. A recommendation on irrigation for different water allocations andoptimal crop loads for production in warm climates is presented in Table 2.It is important to monitor soil or tree water status when applying RDI (see Chapter 4). Climatecontrol for apple (frost protection and/or cooling for sunburn protection or to enhance redcolour in warm areas) is carried out using sprinkler irrigation and its use, in the case of cooling,may disrupt the RDI programme. Evaporative cooling reduces actual ET on the order of 20percent, but total seasonal irrigation water requirements would be much higher than the fullorchard ET c , as calculated in Chapter 4.APPLE 343
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Crop yieldresponse to waterFAOIRRIG
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1. IntroductionFood production and
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Lead AuthorsMartin Smith(formerly F
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3. Yield response to waterof herbac
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The WP parameter introduced in Aqua
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figure 7 The root zone depicted as
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threshold and 1.0 at the lower thre
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also calculated by multiplying with
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FIGURE 14 Schematic representation
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figure 17ClimateInput data defining
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Table 1 Conservative crop parameter
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figure 18 The Main AquaCrop menu.di
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Applications to Irrigation Manageme
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Box 1 Simulating deficit irrigation
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for each planting date. If there ar
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ox 2 (CONTINUED)FIGURE 1 Difference
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Heng, L.K., Hsiao,T.C., Evett, S.,
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Table 2Additional information and d
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capacity (FC) and permanent wilting
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densities. This range is referred t
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Table 3Comparison of simulated with
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In Equation 3 C a is the mean air C
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REFERENCESAllen, R., Pereira, L., R
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Lead AuthorSenthold Asseng(formerly
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Figure 1 World wheat harvested area
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When nutrition is limiting, yield p
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wheat 101
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Figure 1 World rice harvested area
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Response to StressesBecause rice ev
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Lead AuthorTheodore C. Hsiao(Univer
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emergence to flowering is about 65
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ReferencesAyers, R.S. & Westcot, D.
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Figure 1 World soybean harvested ar
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A number of studies indicate that s
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ReferencesBhatia, V.S., Piara Singh
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Figure 1 World barley harvested are
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Barley development may be thought o
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The seasonal water requirements for
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Lead AuthorSuhas P. Wani(ICRISAT, A
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sowing usually starts in late Septe
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loss. If water stress is severe eno
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ReferencesFAO. 2011. FAOSTAT online
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Figure 1 World cotton harvested are
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Response to StressesCotton stands o
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FAO. 2011. FAOSTAT online database,
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spring. In double cropping, sowing
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size as affected by soil water defi
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sunflower 171
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to produce energy (electricity from
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Response to stressLow temperatureSu
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Sugarcane 181
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Figure 1 World potato harvested are
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initiation, vigorous canopy, profus
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ReferencesBradshaw, J.E. 2009. A ge
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Tomato requires soils with proper w
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and there is frequent wetting of ex
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is so excessive that fruit setting
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Lead AuthorsMichele Rinaldi(CRA, Ba
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North Africa and near East ranges f
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Water use & ProductivitySugar beets
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ReferencesAllen, R.G., Pereira, L.S
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Figure 1 Alfalfa harvested area (SA
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Water use & ProductivityAs a perenn
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SalinityAlfalfa is tolerant to rela
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Lead AuthorAsha Karunaratne(formerl
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Generally, the growing season begin
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FAO. 2011. FAOSTAT online database,
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*Flower and grain colour presented
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Figure 1 World quinoa harvested are
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with typical values around 10.5 g/m
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ReferencesAlvarez-Jubete, L., Arend
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Growth and developmentThe common me
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soils (EARO, 2002). Tef has some to
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tef 243
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Lead AuthorsElias Fereres(Universit
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equirements per unit land area for
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figure 6 The water balance of an or
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ox 2 Understanding the transpiratio
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Orchard transpirationTree Tr is det
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ox 4 Sample calculation of E dz , E
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ox 5 Computing olive tree transpira
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FIGURE 10 Crop coefficient (K c ) c
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For training systems on a vertical
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ox 7Consumptive and non-consumptive
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are seeking more precision in their
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ox 9 Examples of soil water monitor
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ox 10 (CONTINUED)The major limitati
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ox 12Definition of CWSI and an exam
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The water budget methodWith this me
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ox 15 Evolution of soil water under
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opening and photosynthesis relative
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that occur during the periods of fr
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The crop, where price can vary more
Page 304: Modify horticultural practicesPruni
Page 307 and 308: FIGURE 13Comparison of yield per un
Page 309 and 310: season. Thus the risks of salinity
Page 312: 4.1 Fruit trees and vinesEditor:Eli
Page 315 and 316: Figure 1 Production trends for oliv
Page 317 and 318: Figure 2Occurrence and duration of
Page 320 and 321: The use of displacement sensors to
Page 322 and 323: Figure 4 Relationship between relat
Page 324 and 325: Table 3 Sample calculation of month
Page 326 and 327: clayey soils. If supply is very lim
Page 329: Lead AuthorDavid A. Goldhamer(forme
Page 332 and 333: Fruit growth during this stage is t
Page 334 and 335: Season-long stressSeveral studies h
Page 336 and 337: Table 1Published monthly crop coeff
Page 339 and 340: Four crop-water-production function
Page 341 and 342: size distribution toward more favou
Page 344 and 345: Lead AuthorSAmos Naor(GRI, Universi
Page 346 and 347: Apples tend to have a biennial bear
Page 348 and 349: water stress and thus highly respon
Page 351 and 352: indicate that deficit irrigation ad
Page 353: Figure 7Effect of midday light inte
Page 357: Failla, O., Zocchi, Z., Treccani, C
Page 360 and 361: Figure 1 Production trends for plum
Page 362 and 363: soil water. In young orchards, post
Page 364 and 365: Figure 3 Relationships between rela
Page 366: ReferencesAllen, R.G., Pereira, L.S
Page 369 and 370: Figure 1 Production trends for almo
Page 371 and 372: FIGURE 2The three stages of almond
Page 373 and 374: Figure 3Differences in the cultivar
Page 375 and 376: Indicators of tree water statusTo p
Page 377 and 378: nuts are rapidly expanding and late
Page 379 and 380: ReferencesAyars, J.E., Johnson, R.
Page 381 and 382: Table 2 (Continued)Year TreatmentWa
Page 383: Table 3 (continued)Potential900 mmA
Page 386 and 387: Figure 1 Production trends for pear
Page 388 and 389: (Elkins et al., 2007). The appearan
Page 390 and 391: out in Spain under more common grow
Page 392 and 393: Figure 4Relationships between the p
Page 394 and 395: Data in Figure 5 suggest that there
Page 396 and 397: e saved, but this causes a reductio
Page 398: pear 389
Page 401 and 402: Figure 1 Production trends for peac
Page 403 and 404: Figure 2bEvolution of vegetative (s
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The postharvest period is important
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the midday stem-water potential in
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PHOTOPeach leaf appearance under th
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FIGURE 5Relation between the crop c
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In applying RDI strategies an impor
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peach 407
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Figure 1 Production trends of walnu
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1 100 mm, a team in California appl
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Figure 1 Production trends for pist
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There are two types of shoot growth
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FIGURE 3Time course development of
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Stage III was the most stress sensi
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(see Chapter 4), as in other specie
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Table 2 Suggested RDI strategies fo
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Lead AuthorSCristos Xiloyannis(Univ
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is completed within 20 days; therea
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or peach. However, because fruit is
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to a midday value varying between -
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Lead AuthorRaúl Ferreyraand Gabrie
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The most critical developmental per
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Figure 4Effects of the level of app
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Lead AuthorJordi Marsal(IRTA, Lleid
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water stress should not be imposed
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Under certain growing conditions, s
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ReferencesAntunez A., Stockle, C. &
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Lead AuthorSVictor O. Sadras(SARDI
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Current season inflorescences becom
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the actual timing of each critical
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environments, rainfall pulses and l
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Figure 6Yield reduction with increa
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Table 3Yield and yield components o
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Figure 9Wine quality score as a fun
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Figure 11Wine attributes of Tempran
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(McCarthy and Coombe, 1999), but ev
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Figure 15Relative yield as a functi
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Shiraz, Grenache and Mourvèdre in
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Girona, J., Mata, M., del Campo, J.
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Lead AuthorSCristos Xiloyannis(Univ
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Figure 2Seasonal pattern of the lea
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Figure 5Fraction of the exposed and
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FIGURE 9Soil volume explored by roo
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Water Requirements and IrrigationMa
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5. EpilogueThis publication, Irriga
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operating systems (e.g., Linux, Uni
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Crop yield response to waterAbstrac
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Crop yield response to water - Cra

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