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Volumn 57, Issue 2, 2011, Pages 81-93

Waveband selection using a phased regression with a bootstrap procedure for estimating legume content in a mixed sown pasture

Author keywords

Bootstrap procedure; Fertilizer application; Hyperspectral remote sensing; Pasture quality; White clover

Indexed keywords

BOOTSTRAPPING; CANOPY REFLECTANCE; FERTILIZER APPLICATION; FORAGE; LEGUME; MULTIPLE REGRESSION; NUMERICAL MODEL; PASTURE; REMOTE SENSING;

EID: 79958261809     PISSN: 17446961     EISSN: 1744697X     Source Type: Journal    
DOI: 10.1111/j.1744-697X.2011.00212.x     Document Type: Article
Times cited : (7)

References (57)
  • 1
    • 76649105188 scopus 로고
    • Official methods of analysis
    • AOAC (), 16th edn. In: (Ed Cunniff P), AOAC International, Arlington, VA.
    • AOAC (1995) Official methods of analysis, 16th edn. In: AOAC International (Ed Cunniff P), AOAC International, Arlington, VA.
    • (1995) AOAC International
  • 2
    • 0031177876 scopus 로고    scopus 로고
    • Reflectance spectra of organic matter in the visible near-infrared and short wave infrared region (400-2500nm) during a controlled decomposition process
    • Ben-Dor E, Inbar Y, Chen Y (1997) Reflectance spectra of organic matter in the visible near-infrared and short wave infrared region (400-2500nm) during a controlled decomposition process. Remote Sens Environ 61: 1-15.
    • (1997) Remote Sens Environ , vol.61 , pp. 1-15
    • Ben-Dor, E.1    Inbar, Y.2    Chen, Y.3
  • 3
    • 0030999016 scopus 로고    scopus 로고
    • Prediction of the chemical composition of white clover by near-infrared reflectance spectroscopy
    • Berardo N (1997) Prediction of the chemical composition of white clover by near-infrared reflectance spectroscopy. Grass Forage Sci 52: 27-32.
    • (1997) Grass Forage Sci , vol.52 , pp. 27-32
    • Berardo, N.1
  • 4
    • 0032317096 scopus 로고    scopus 로고
    • Quantifying chlorophylls and carotenoids at leaf and canopy scales: an evaluation of some hyperspectral approaches
    • Blackburn AG (1998) Quantifying chlorophylls and carotenoids at leaf and canopy scales: an evaluation of some hyperspectral approaches. Remote Sens Environ 66: 273-285.
    • (1998) Remote Sens Environ , vol.66 , pp. 273-285
    • Blackburn, A.G.1
  • 5
    • 0001610365 scopus 로고    scopus 로고
    • Determination of carbon fraction and nitrogen concentration in tree foliage by near infrared reflectance: a comparison of statistical methods
    • Bolster KL, Martin ME, Aber JD (1996) Determination of carbon fraction and nitrogen concentration in tree foliage by near infrared reflectance: a comparison of statistical methods. Can J Forest Res 26: 590-600.
    • (1996) Can J Forest Res , vol.26 , pp. 590-600
    • Bolster, K.L.1    Martin, M.E.2    Aber, J.D.3
  • 6
    • 36248949001 scopus 로고    scopus 로고
    • Estimation of green grass/herb biomass from airborne hyperspectral imagery using spectral indices and partial least squares regression
    • Cho MA, Skidmore A, Corsi F, van Wieren SE, Sobhan I (2007) Estimation of green grass/herb biomass from airborne hyperspectral imagery using spectral indices and partial least squares regression. Int J Appl Earth Obs Geoinf 9: 414-424.
    • (2007) Int J Appl Earth Obs Geoinf , vol.9 , pp. 414-424
    • Cho, M.A.1    Skidmore, A.2    Corsi, F.3    van Wieren, S.E.4    Sobhan, I.5
  • 7
    • 84988152022 scopus 로고
    • Near infrared reflectance spectroscopy: a survey of wavelength selection to determine dry matter digestibility
    • Clark DH, Lamb RC (1991) Near infrared reflectance spectroscopy: a survey of wavelength selection to determine dry matter digestibility. J Dairy Sci 74: 2200-2205.
    • (1991) J Dairy Sci , vol.74 , pp. 2200-2205
    • Clark, D.H.1    Lamb, R.C.2
  • 8
    • 0033389656 scopus 로고    scopus 로고
    • The use of imaging spectrometry for agricultural applications
    • Clevers JGPW (1999) The use of imaging spectrometry for agricultural applications. ISPRS J Photogramm Remote Sens 54: 299-304.
    • (1999) ISPRS J Photogramm Remote Sens , vol.54 , pp. 299-304
    • Clevers, J.G.P.W.1
  • 9
    • 0016331866 scopus 로고
    • Vegetation canopy reflectance
    • Colwell JE (1974) Vegetation canopy reflectance. Remote Sens Environ 3: 175-183.
    • (1974) Remote Sens Environ , vol.3 , pp. 175-183
    • Colwell, J.E.1
  • 10
    • 0008123911 scopus 로고
    • The constituent differential method of estimating species composition in mixed hay
    • Cooper CS, Hyder DN, Petersen RG, Sneva FA (1957) The constituent differential method of estimating species composition in mixed hay. Agron J 49: 190-193.
    • (1957) Agron J , vol.49 , pp. 190-193
    • Cooper, C.S.1    Hyder, D.N.2    Petersen, R.G.3    Sneva, F.A.4
  • 11
    • 0024856758 scopus 로고
    • Remote sensing of foliar chemistry
    • Curran PJ (1989) Remote sensing of foliar chemistry. Remote Sens Environ 30: 271-278.
    • (1989) Remote Sens Environ , vol.30 , pp. 271-278
    • Curran, P.J.1
  • 12
    • 0034969185 scopus 로고    scopus 로고
    • Estimating the foliar biochemical concentration of leaves with reflectance spectrometry: testing the Kokaly and Clark methodologies
    • Curran PJ, Dungan JL, Peterson DL (2001) Estimating the foliar biochemical concentration of leaves with reflectance spectrometry: testing the Kokaly and Clark methodologies. Remote Sens Environ 76: 349-359.
    • (2001) Remote Sens Environ , vol.76 , pp. 349-359
    • Curran, P.J.1    Dungan, J.L.2    Peterson, D.L.3
  • 13
    • 41449108067 scopus 로고    scopus 로고
    • Inversion of a radiative transfer model for estimating vegetation LAI and chlorophyll in a heterogeneous grassland
    • Darvishzadeh R, Skidmore A, Schlerf M, Atzberger C (2008) Inversion of a radiative transfer model for estimating vegetation LAI and chlorophyll in a heterogeneous grassland. Remote Sens Environ 112: 2592-2604.
    • (2008) Remote Sens Environ , vol.112 , pp. 2592-2604
    • Darvishzadeh, R.1    Skidmore, A.2    Schlerf, M.3    Atzberger, C.4
  • 14
    • 0032551508 scopus 로고    scopus 로고
    • A new technique for interpolating the reflectance red edge position
    • Dawson TP, Curran PJ (1998) A new technique for interpolating the reflectance red edge position. Int J Remote Sens 19: 2133-2139.
    • (1998) Int J Remote Sens , vol.19 , pp. 2133-2139
    • Dawson, T.P.1    Curran, P.J.2
  • 17
    • 0025573172 scopus 로고
    • Visible and near infrared reflectance characteristics of dry plant materials
    • Elvidge DC (1990) Visible and near infrared reflectance characteristics of dry plant materials. Int J Remote Sens 11: 1775-1795.
    • (1990) Int J Remote Sens , vol.11 , pp. 1775-1795
    • Elvidge, D.C.1
  • 18
    • 36249030554 scopus 로고    scopus 로고
    • Can nutrient status of four woody plant species be predicted using field spectrometry?
    • Ferwerda JG, Skidmore AK (2007) Can nutrient status of four woody plant species be predicted using field spectrometry? ISPRS J Photogramm Remote Sens 62: 406-414.
    • (2007) ISPRS J Photogramm Remote Sens , vol.62 , pp. 406-414
    • Ferwerda, J.G.1    Skidmore, A.K.2
  • 19
    • 27744451462 scopus 로고    scopus 로고
    • Nitrogen detection with hyperspectral normalized ratio indices across multiple plant species
    • Ferwerda JG, Skidmore AK, Mutanga O (2005) Nitrogen detection with hyperspectral normalized ratio indices across multiple plant species. Int J Remote Sens 26: 4083-4095.
    • (2005) Int J Remote Sens , vol.26 , pp. 4083-4095
    • Ferwerda, J.G.1    Skidmore, A.K.2    Mutanga, O.3
  • 20
    • 33646700476 scopus 로고    scopus 로고
    • A bootstrap procedure to select hyperspectral wavebands related to tannin content
    • Ferwerda JG, Skidmore AK, Stein A (2006) A bootstrap procedure to select hyperspectral wavebands related to tannin content. Int J Remote Sens 27: 1413-1424.
    • (2006) Int J Remote Sens , vol.27 , pp. 1413-1424
    • Ferwerda, J.G.1    Skidmore, A.K.2    Stein, A.3
  • 21
    • 0028852929 scopus 로고
    • Retrieval of equivalent water thickness and information related to biochemical components of vegetation canopies from AVIRIS data
    • Gao B-C, Goetzt AFH (1995) Retrieval of equivalent water thickness and information related to biochemical components of vegetation canopies from AVIRIS data. Remote Sens Environ 52: 155-162.
    • (1995) Remote Sens Environ , vol.52 , pp. 155-162
    • Gao, B.-C.1    Goetzt, A.F.H.2
  • 23
    • 0029804451 scopus 로고    scopus 로고
    • Signature analysis of leaf reflectance spectra: algorithm development for remote sensing of chlorophyll
    • Gitelson AA, Merziyak NN (1996) Signature analysis of leaf reflectance spectra: algorithm development for remote sensing of chlorophyll. J Plant Physiol 148: 494-500.
    • (1996) J Plant Physiol , vol.148 , pp. 494-500
    • Gitelson, A.A.1    Merziyak, N.N.2
  • 24
    • 0028150408 scopus 로고
    • Spectral reflectance changes associated with autumn senescence of Aesculus hippocastanum L. and Acer platanoides L. leaves. Spectral features and relation to chlorophyll estimation
    • Gitelson A, Merzlyak MN (1994) Spectral reflectance changes associated with autumn senescence of Aesculus hippocastanum L. and Acer platanoides L. leaves. Spectral features and relation to chlorophyll estimation. J Plant Physiol 143: 286-292.
    • (1994) J Plant Physiol , vol.143 , pp. 286-292
    • Gitelson, A.1    Merzlyak, M.N.2
  • 25
    • 0030453414 scopus 로고    scopus 로고
    • Use of a green channel in remote sensing of global vegetation from EOS-MODIS
    • Gitelson AA, Kaufman YJ, Merzlyak NM (1996) Use of a green channel in remote sensing of global vegetation from EOS-MODIS. Remote Sens Environ 58: 289-298.
    • (1996) Remote Sens Environ , vol.58 , pp. 289-298
    • Gitelson, A.A.1    Kaufman, Y.J.2    Merzlyak, N.M.3
  • 26
    • 0003056574 scopus 로고
    • Forage fiber analyses: apparatus, reagents, procedures, and some applications
    • In: (Ed ARS, USDA), US Government Print Office, Washington DC
    • Goering HK, Van Soest PJ (1970) Forage fiber analyses: apparatus, reagents, procedures, and some applications. In: Agricultural Handbook No. 379 (Ed ARS, USDA), US Government Print Office, Washington DC, 1-20.
    • (1970) Agricultural Handbook No. 379 , pp. 1-20
    • Goering, H.K.1    Van Soest, P.J.2
  • 27
    • 0036323544 scopus 로고    scopus 로고
    • Integrated narrow-band vegetation indices for prediction of crop chlorophyll content for application to precision agriculture
    • Haboudane D, Miller RJ, Tremblay N, Zarco-Tejada JP, Dextraze L (2002) Integrated narrow-band vegetation indices for prediction of crop chlorophyll content for application to precision agriculture. Remote Sens Environ 81: 416-426.
    • (2002) Remote Sens Environ , vol.81 , pp. 416-426
    • Haboudane, D.1    Miller, R.J.2    Tremblay, N.3    Zarco-Tejada, J.P.4    Dextraze, L.5
  • 28
    • 79958269828 scopus 로고    scopus 로고
    • Hokkaido Government Department of Agriculture () Guidelines for fertilizer application in Hokkaido. Hokkaido Government Department of Agriculture, available from: [cited 13 March 2008].
    • Hokkaido Government Department of Agriculture (2004) Guidelines for fertilizer application in Hokkaido. Hokkaido Government Department of Agriculture, available from: [cited 13 March 2008].
    • (2004)
  • 30
    • 33751564025 scopus 로고    scopus 로고
    • Relationship between light use efficiency and photochemical reflectance index in soybean leaves as affected by soil water content
    • Inoue Y, Peñuelas J (2006) Relationship between light use efficiency and photochemical reflectance index in soybean leaves as affected by soil water content. Int J Remote Sens 27: 5109-5114.
    • (2006) Int J Remote Sens , vol.27 , pp. 5109-5114
    • Inoue, Y.1    Peñuelas, J.2
  • 31
    • 79958248719 scopus 로고
    • Indirect estimation of grass-legume rations in mixed swards
    • Johnson KD, Lechtenberg VL, Vorst JJ, Hendrix KS (1982) Indirect estimation of grass-legume rations in mixed swards. Agron J 74: 1089-1091.
    • (1982) Agron J , vol.74 , pp. 1089-1091
    • Johnson, K.D.1    Lechtenberg, V.L.2    Vorst, J.J.3    Hendrix, K.S.4
  • 32
    • 71149090552 scopus 로고    scopus 로고
    • Estimating forage biomass and quality in a mixed sown pasture based on PLS regression with waveband selection
    • Kawamura K, Watanabe N, Sakanoue S, Inoue Y (2008) Estimating forage biomass and quality in a mixed sown pasture based on PLS regression with waveband selection. Grassl Sci 54: 131-146.
    • (2008) Grassl Sci , vol.54 , pp. 131-146
    • Kawamura, K.1    Watanabe, N.2    Sakanoue, S.3    Inoue, Y.4
  • 33
    • 77952181465 scopus 로고    scopus 로고
    • Field radiometer with canopy pasture probe as a potential tool to estimate and map pasture biomass and mineral components: a case study in the Lake Taupo catchment, New Zealand
    • Kawamura K, Betteridge K, Sanches ID, Tuohy MP, Costall D, Inoue Y (2009) Field radiometer with canopy pasture probe as a potential tool to estimate and map pasture biomass and mineral components: a case study in the Lake Taupo catchment, New Zealand. NZ J Agric Res 52: 417-434.
    • (2009) NZ J Agric Res , vol.52 , pp. 417-434
    • Kawamura, K.1    Betteridge, K.2    Sanches, I.D.3    Tuohy, M.P.4    Costall, D.5    Inoue, Y.6
  • 34
    • 0033102275 scopus 로고    scopus 로고
    • Spectroscopic determination of leaf biochemistry using band-depth analysis of absorption features and stepwise multiple linear regression
    • Kokaly RF, Clark RN (1999) Spectroscopic determination of leaf biochemistry using band-depth analysis of absorption features and stepwise multiple linear regression. Remote Sens Environ 67: 267-287.
    • (1999) Remote Sens Environ , vol.67 , pp. 267-287
    • Kokaly, R.F.1    Clark, R.N.2
  • 35
    • 0037144451 scopus 로고    scopus 로고
    • Estimating leaf nitrogen concentration in ryegrass (Lolium spp.) pasture using the chlorophyll red-edge: theoretical modelling and experimental observations
    • Lamb WD, Steyn-Ross M, Schaare P, Hanna MM, Silvester W, Steyn-Ross A (2002) Estimating leaf nitrogen concentration in ryegrass (Lolium spp.) pasture using the chlorophyll red-edge: theoretical modelling and experimental observations. Int J Remote Sens 23: 3619-3648.
    • (2002) Int J Remote Sens , vol.23 , pp. 3619-3648
    • Lamb, W.D.1    Steyn-Ross, M.2    Schaare, P.3    Hanna, M.M.4    Silvester, W.5    Steyn-Ross, A.6
  • 36
    • 84984455236 scopus 로고
    • Forage quality and animal selection of Arachis pintoi in association with tropical grasses in the eastern plains of Colombia
    • Lescano CE, Thomas D (1988) Forage quality and animal selection of Arachis pintoi in association with tropical grasses in the eastern plains of Colombia. Grass Forage Sci 43: 433-439.
    • (1988) Grass Forage Sci , vol.43 , pp. 433-439
    • Lescano, C.E.1    Thomas, D.2
  • 37
    • 13544261561 scopus 로고    scopus 로고
    • Development of near Infrared reflectance spectroscopy calibrations to estimate legume content of multispecies legume-grass mixtures
    • Locher F, Heuwinkel H, Gutser R, Schmidhalter U (2005) Development of near Infrared reflectance spectroscopy calibrations to estimate legume content of multispecies legume-grass mixtures. Agron J 97: 11-17.
    • (2005) Agron J , vol.97 , pp. 11-17
    • Locher, F.1    Heuwinkel, H.2    Gutser, R.3    Schmidhalter, U.4
  • 38
    • 85151711359 scopus 로고
    • A theoretical foundation for the PLS algorithm
    • Lorber A, Wangen LE, Kowalski BR (1987) A theoretical foundation for the PLS algorithm. J Chemom 1: 19-31.
    • (1987) J Chemom , vol.1 , pp. 19-31
    • Lorber, A.1    Wangen, L.E.2    Kowalski, B.R.3
  • 39
    • 84981834371 scopus 로고
    • The dry-weight-rank method for the botanical analysis of pasture
    • Mannetje L, Haydock KP (1963) The dry-weight-rank method for the botanical analysis of pasture. Grass Forage Sci 18: 268-275.
    • (1963) Grass Forage Sci , vol.18 , pp. 268-275
    • Mannetje, L.1    Haydock, K.P.2
  • 40
    • 0008036959 scopus 로고
    • Visual estimation of botanical composition in simple legume-grass mixtures
    • Marten GC (1964) Visual estimation of botanical composition in simple legume-grass mixtures. Agron J 56: 549-552.
    • (1964) Agron J , vol.56 , pp. 549-552
    • Marten, G.C.1
  • 41
    • 0000663578 scopus 로고
    • Indirect estimation of botanical composition of alfalfa-smooth bromegrass mixture
    • Moore KJ, Roberts CA, Fritz JO (1990) Indirect estimation of botanical composition of alfalfa-smooth bromegrass mixture. Agron J 82: 287-290.
    • (1990) Agron J , vol.82 , pp. 287-290
    • Moore, K.J.1    Roberts, C.A.2    Fritz, J.O.3
  • 42
    • 0842306346 scopus 로고    scopus 로고
    • Predicting in situ pasture quality in the Kruger National Park, South Africa, using continuum-removed absorption features
    • Mutanga O, Skidmore AK, Prins HHT (2004) Predicting in situ pasture quality in the Kruger National Park, South Africa, using continuum-removed absorption features. Remote Sens Environ 89: 393-408.
    • (2004) Remote Sens Environ , vol.89 , pp. 393-408
    • Mutanga, O.1    Skidmore, A.K.2    Prins, H.H.T.3
  • 43
    • 17144371921 scopus 로고    scopus 로고
    • Estimating tropical pasture quality at canopy level using band depth analysis with continuum removal in the visible domain
    • Mutanga O, Skidmore AK, Kumar L, Ferwerda J (2005) Estimating tropical pasture quality at canopy level using band depth analysis with continuum removal in the visible domain. Int J Remote Sens 26: 1093-1108.
    • (2005) Int J Remote Sens , vol.26 , pp. 1093-1108
    • Mutanga, O.1    Skidmore, A.K.2    Kumar, L.3    Ferwerda, J.4
  • 44
    • 0000063335 scopus 로고
    • Predicting forage quality by infrared reflectance spectroscopy
    • Norris KH, Barnes RF, Moore JE, Shenk JS (1976) Predicting forage quality by infrared reflectance spectroscopy. J Anim Sci 43: 889-897.
    • (1976) J Anim Sci , vol.43 , pp. 889-897
    • Norris, K.H.1    Barnes, R.F.2    Moore, J.E.3    Shenk, J.S.4
  • 45
    • 0028431034 scopus 로고
    • Reflectance indices associated with physiological changes in nitrogen- and water-limited sunflower leaves
    • Peñuelas J, Gamon JA, Fredeen AL, Merino J, Field CB (1994) Reflectance indices associated with physiological changes in nitrogen- and water-limited sunflower leaves. Remote Sens Environ 48: 135-146.
    • (1994) Remote Sens Environ , vol.48 , pp. 135-146
    • Peñuelas, J.1    Gamon, J.A.2    Fredeen, A.L.3    Merino, J.4    Field, C.B.5
  • 46
    • 36849043571 scopus 로고    scopus 로고
    • Spectral measurements of alfalfa/grass fields related to forage properties and species composition
    • Post CJ, Degloria SD, Cherney JH, Mikhailova EA (2007) Spectral measurements of alfalfa/grass fields related to forage properties and species composition. J Plant Nutr 30: 1779-1789.
    • (2007) J Plant Nutr , vol.30 , pp. 1779-1789
    • Post, C.J.1    Degloria, S.D.2    Cherney, J.H.3    Mikhailova, E.A.4
  • 47
    • 0033104049 scopus 로고    scopus 로고
    • Dry-matter yield and herbage quality of a perennial ryegrass/white clover sward in a rotational grazing and cutting system
    • Schils MLR, Vellinga VT, Kraak T (1999) Dry-matter yield and herbage quality of a perennial ryegrass/white clover sward in a rotational grazing and cutting system. Grass Forage Sci 54: 19-29.
    • (1999) Grass Forage Sci , vol.54 , pp. 19-29
    • Schils, M.L.R.1    Vellinga, V.T.2    Kraak, T.3
  • 49
    • 11144286412 scopus 로고    scopus 로고
    • Prediction of the ratio of legumes in a mixed seeding pasture by polarized reflected light
    • Shibayama M (2003) Prediction of the ratio of legumes in a mixed seeding pasture by polarized reflected light. Grassl Sci 49: 229-237.
    • (2003) Grassl Sci , vol.49 , pp. 229-237
    • Shibayama, M.1
  • 50
    • 0036330345 scopus 로고    scopus 로고
    • Relationships between leaf pigment content and spectral reflectance across a wide range of species, leaf structures and developmental stages
    • Sims AD, Gamon AJ (2002) Relationships between leaf pigment content and spectral reflectance across a wide range of species, leaf structures and developmental stages. Remote Sens Environ 81: 337-354.
    • (2002) Remote Sens Environ , vol.81 , pp. 337-354
    • Sims, A.D.1    Gamon, A.J.2
  • 51
    • 0036325819 scopus 로고    scopus 로고
    • Spectral characteristics of lignin and soluble phenolics in the near infrared - a comparative study
    • Soukupova J, Rock BN, Albrechtova J (2002) Spectral characteristics of lignin and soluble phenolics in the near infrared - a comparative study. Int J Remote Sens 23: 3039-3055.
    • (2002) Int J Remote Sens , vol.23 , pp. 3039-3055
    • Soukupova, J.1    Rock, B.N.2    Albrechtova, J.3
  • 52
    • 33646680293 scopus 로고    scopus 로고
    • Herbage mass, nutritive value and canopy spectral reflectance of bermudagrass pastures
    • Starks JP, Zhao D, Phillips AW, Coleman SW (2006) Herbage mass, nutritive value and canopy spectral reflectance of bermudagrass pastures. Grass Forage Sci 61: 101-111.
    • (2006) Grass Forage Sci , vol.61 , pp. 101-111
    • Starks, J.P.1    Zhao, D.2    Phillips, A.W.3    Coleman, S.W.4
  • 53
    • 2942724627 scopus 로고    scopus 로고
    • Accuracy assessments of hyperspectral waveband performance for vegetation analysis applications
    • Thenkabail PS, Enclona EA, Ashton MS, Van Der Meer B (2004) Accuracy assessments of hyperspectral waveband performance for vegetation analysis applications. Remote Sens Environ 91: 354-376.
    • (2004) Remote Sens Environ , vol.91 , pp. 354-376
    • Thenkabail, P.S.1    Enclona, E.A.2    Ashton, M.S.3    Van Der Meer, B.4
  • 54
    • 79958285288 scopus 로고
    • Indirect estimation of wheat-hairy vetch ratios in a mixed stand
    • Twidwell EK, Johnson KD, Cherney JH (1986) Indirect estimation of wheat-hairy vetch ratios in a mixed stand. Agron J 78: 344-346.
    • (1986) Agron J , vol.78 , pp. 344-346
    • Twidwell, E.K.1    Johnson, K.D.2    Cherney, J.H.3
  • 55
    • 13144254140 scopus 로고
    • A statistical study of several methods used in determining the botanical composition of a sward: I. a study of established pastures
    • Vankeuren RW, Ahlgren HL (1957) A statistical study of several methods used in determining the botanical composition of a sward: I. a study of established pastures. Agron J 49: 532-536.
    • (1957) Agron J , vol.49 , pp. 532-536
    • Vankeuren, R.W.1    Ahlgren, H.L.2
  • 56
    • 78650161891 scopus 로고    scopus 로고
    • Combination use of bite counter and GPS for monitoring foraging behaviour in grazing cow
    • Ext): - (In Japanese.)
    • Watanabe N, Umemura K, Sudo K (2004) Combination use of bite counter and GPS for monitoring foraging behaviour in grazing cow. Grassl Sci 50 (Ext): 404-405. (In Japanese.)
    • (2004) Grassl Sci , vol.50 , pp. 404-405
    • Watanabe, N.1    Umemura, K.2    Sudo, K.3
  • 57
    • 77952115636 scopus 로고    scopus 로고
    • Assessment of forage biomass and quality parameters of bermudagrass using proximal sensing of pasture canopy reflectance
    • Zhao D, Starks PJ, Brown MA, Phillips WA, Coleman SW (2007) Assessment of forage biomass and quality parameters of bermudagrass using proximal sensing of pasture canopy reflectance. Grassl Sci 53: 39-49.
    • (2007) Grassl Sci , vol.53 , pp. 39-49
    • Zhao, D.1    Starks, P.J.2    Brown, M.A.3    Phillips, W.A.4    Coleman, S.W.5


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