Crop yield response to water - Cra

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Figure 1 World barley harvested area and average yield over the period 1961-2009 (FAO, 2011).Area harvestedYield1003Area harvested (million ha)9080706050403020102.521.510.5Average yield (tonne/ha)0019611964196719701973197619791982198519881991199419972000200320062009Figure 2 Barley harvested area (GAEZ, 2011).Reference year 2000barley 135
two cereals are scarce, one of the main differences is that barley is generally believed to bebetter adapted than wheat to stressful situations and therefore it is normally sown in harsherenvironments than wheat (see Cossani et al., 2009). In many areas, where one crop is producedper year, barley is grown in rotation with a variety of other winter annuals such as other cereals,oilseed crops, and pulses; but in dry environments barley monoculture is common (i.e. in theMediterranean basin in areas where annual rainfall is less than 350 mm). The season length ofbarley tends to be shorter than that of wheat, making it more suitable for double cropping. Forinstance, barley may be followed immediately by either maize or soybean.Growth and DevelopmentBarley genotypes are generally grouped into two categories according to their sowing time:winter and spring cultivars. Winter barley is sown in autumn and requires a cold period(vernalization) during early growth for flowering under long days, and matures in latespring to early summer. This ensures flowering when the risk of late frost is low, leading toa long yield formation period that maximizes potential yield. In areas where winter is harshenough to kill a significant number of seedlings, instead of winter barley, spring barley,not requiring vernalization, is sown in the spring when soil temperatures are adequate forgermination and seedling emergence and it is also photoperiod sensitive. Because of themuch shortened duration in the field, spring barley has lower yield potential than wintertypes. In environments with quite mild winters, winter type may be sown in the middleof winter and still flowers (mid-spring) and matures (early summer) under favourableconditions to give yields similar to those obtained when winter types are sown in autumn.This practice of sowing winter types late is traditional for much of the barley growingregion of the Mediterranean Basin, particularly in North Africa, and the cultivars can betermed Mediterranean genotypes. They are usually facultatively sensitive to vernalization(facultative barleys). It is generally accepted that within the normal growing season a delayin sowing date has a negative effect on grain yield. The season length of a spring typeranges from 90 to 130 days while a winter type needs about 180 to 250 days to mature, andMediterranean types are intermediate. Samples of duration of various growth phases aregiven in Table 1.Table 1Sample duration (calendar days) of different stages of Mediterranean, springand winter barley from the literature. Data are averages of different cultivars.Barley typeSowingemergenceSowingheading*SowingmaturityMediterranean 10-12 107-118 137-150Spring 10-14 45-52 91-96ReferenceAbeledo et al., 2003;Abeledo, 2009 unpublishedMuurinen et al., 2007;Peltonen-Sainio, P., pers. Comm.Winter,Southern Europe14-16 144-169 172-212Albrizio et al., 2010;Cossani et al., 2009Winter,Northern Europe- 225 280 HGCA, 2006*pollination in barley, unlike in wheat, occurs at heading136crop yield response to water
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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
Page 99 and 100: In Equation 3 C a is the mean air C
Page 102: REFERENCESAllen, R., Pereira, L., R
Page 107 and 108: Lead AuthorSenthold Asseng(formerly
Page 109 and 110: Figure 1 World wheat harvested area
Page 113 and 114: When nutrition is limiting, yield p
Page 116: wheat 101
Page 120 and 121: Figure 1 World rice harvested area
Page 123: Response to StressesBecause rice ev
Page 129 and 130: Lead AuthorTheodore C. Hsiao(Univer
Page 132 and 133: emergence to flowering is about 65
Page 135 and 136: ReferencesAyers, R.S. & Westcot, D.
Page 140: Figure 1 World soybean harvested ar
Page 144 and 145: A number of studies indicate that s
Page 146: ReferencesBhatia, V.S., Piara Singh
Page 152: Barley development may be thought o
Page 155 and 156: The seasonal water requirements for
Page 159 and 160: Lead AuthorSuhas P. Wani(ICRISAT, A
Page 161: sowing usually starts in late Septe
Page 164 and 165: loss. If water stress is severe eno
Page 166: ReferencesFAO. 2011. FAOSTAT online
Page 170: Figure 1 World cotton harvested are
Page 173: Response to StressesCotton stands o
Page 176: FAO. 2011. FAOSTAT online database,
Page 181 and 182: spring. In double cropping, sowing
Page 183 and 184: size as affected by soil water defi
Page 186: sunflower 171
Page 191 and 192: to produce energy (electricity from
Page 193 and 194: Response to stressLow temperatureSu
Page 196: 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
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Modify horticultural practicesPruni
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FIGURE 13Comparison of yield per un
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season. Thus the risks of salinity
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4.1 Fruit trees and vinesEditor:Eli
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Figure 1 Production trends for oliv
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Figure 2Occurrence and duration of
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The use of displacement sensors to
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Figure 4 Relationship between relat
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Table 3 Sample calculation of month
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clayey soils. If supply is very lim
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Lead AuthorDavid A. Goldhamer(forme
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Fruit growth during this stage is t
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Season-long stressSeveral studies h
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Table 1Published monthly crop coeff
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Four crop-water-production function
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size distribution toward more favou
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Lead AuthorSAmos Naor(GRI, Universi
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Apples tend to have a biennial bear
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water stress and thus highly respon
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indicate that deficit irrigation ad
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Figure 7Effect of midday light inte
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Figure 10Response of marketable fru
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Failla, O., Zocchi, Z., Treccani, C
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Figure 1 Production trends for plum
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soil water. In young orchards, post
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Figure 3 Relationships between rela
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ReferencesAllen, R.G., Pereira, L.S
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Figure 1 Production trends for almo
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FIGURE 2The three stages of almond
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Figure 3Differences in the cultivar
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Indicators of tree water statusTo p
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nuts are rapidly expanding and late
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ReferencesAyars, J.E., Johnson, R.
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Table 2 (Continued)Year TreatmentWa
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Table 3 (continued)Potential900 mmA
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Figure 1 Production trends for pear
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(Elkins et al., 2007). The appearan
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out in Spain under more common grow
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Figure 4Relationships between the p
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Data in Figure 5 suggest that there
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e saved, but this causes a reductio
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pear 389
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Figure 1 Production trends for peac
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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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