Effect of drainage date on yield and dry matter partitioning in irrigated rice

Dingkuhn, Michaël; Gal, Pierre-Yves Le

doi:10.1016/0378-4290(95)00094-1

Cited by 63 publications

(26 citation statements)

References 9 publications

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“…These data may also be used to determine time boundary conditions in crop yield models (Bauman et al, 2001), to examine animal dynamics in crop-associated fauna (Pettorelli et al, 2005) and to support water management decisions (Dingkuhn and Le Gal, 1996). Moreover, rice hydroperiod determination as part of the rice growing cycle is vital to rice monitoring and impact management and is expected to become more relevant in the near future (Torbick et al, 2011;Boschetti et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Assessment of MODIS spectral indices for determining rice paddy agricultural practices and hydroperiod

Tornos

Huesca

Domínguez

et al. 2015

ISPRS Journal of Photogrammetry and Remote Sensing

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a b s t r a c tRice agricultural practices and hydroperiod dates must be determined to obtain information on water management practices and their environmental effects. Spectral indices derived from an 8-day MODIS composite allows to identify rice phenometrics at varying degrees of success. The aims of this study were (1) to assess the dynamics of the Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Index (NDWI(1) and NDWI(2)) and Shortwave Angle Slope Index (SASI) in relation to rice agricultural practices and hydroperiod, and (2) to assess the capability for these indices to detect phenometrics in rice under different flooding regimes. Two rice farming areas in Spain that are governed under different water management practices, the Ebro Delta and Orellana, were studied over a 12-year period (2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012). The index time series autocorrelation function was calculated to determine index dynamics in both areas. Secondly, average indices were calculated to identify significant points close to key agricultural and flooding dates, and index behaviors and capacities to identify phenometrics were assessed on a pixel level. The index autocorrelation function produced a regular pattern in both zones, being remarkably homogeneous in the Ebro Delta. It was concluded that a combination of NDVI, NDWI(1), NDWI (2) and SASI may improve the results obtained through each index. NDVI was more effective at detecting the heading date and flooding trends in the Ebro Delta. NDWI(1), NDWI(2) and SASI identified the harvest and the end of environmental flooding in the Delta, and the flooding in Orellana, more effectively. These results may set strong foundations for the development of new strategies in rice monitoring systems, providing useful information to policy makers and environmental studies.

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Section: Introductionmentioning

confidence: 99%

Assessment of MODIS spectral indices for determining rice paddy agricultural practices and hydroperiod

Tornos

Huesca

Domínguez

et al. 2015

ISPRS Journal of Photogrammetry and Remote Sensing

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“…(1990) introduced a hypothesis on rice yield that grain yield equals the sink size when source size equals or is greater than the sink size and they assumed that the plant loses pre-reserved dry matter to fill a deficit of the DMP for the sink demand. Dingkuhn and Le Gal (1996) observed the dry matter change during grain filling under varied water regimes, and supported this model to some extent, although they also suggested that reserves are not necessarily fully mobilized whenever there is a shortage of DMP to fill sink demand. The compensatory utilization of pre-reserved matter proposed above implies that NSC can contribute to the yield when there is a great demand for assimilates by the large sink.…”

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confidence: 69%

Contribution of Sink and Source Sizes to Yield Variation among Rice Cultivars

Lubis

Shiraiwa

Ohnishi

et al. 2003

Plant Production Science

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“…Growing rice under water saving systems such as alternate wetting and drying (AWD) and aerobic rice (AR) may decrease grain quality owing to quick moisture loss and resultant water stress (Dingkuhn and Gal, 1996;Zhang et al, 2008). However, growing rice under AWD and AR is inevitable in the wake of worldwide water shortages (Rejesus et al, 2011;Nie et al, 2012;Price et al, 2013;Ye et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Mulching Improves Crop Growth, Grain Length, Head Rice and Milling Recovery of Basmati Rice Grown in Water-saving Production Systems

Jabran¹,

Ullah²,

Akbar³

2015

IJAB

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To cite this paper: Jabran, K., E. Ullah and N. Akbar, 2015. Mulching improves crop growth, grain length, head rice and milling recovery of basmati rice grown in water-saving production systems. AbstractWater saving rice cultivation is indispensable in the wake of severe water shortage. Application of mulches can increase the water retention in water-saving rice; however, the effect of mulches on the growth and quality of rice are desired to be investigated. Hence, two years studies were conducted to evaluate the effect of plastic and straw mulch on crop growth, grain quality and recovery of fine rice. Water saving rice was grown under aerobic (AR) and alternate wetting and drying (AWD) conditions with application of plastic and straw mulch (5 t ha -1). Plots without mulch were maintained in both the water saving systems for comparison. Mulches significantly improved the growth of rice crop in terms of leaf area index, crop growth rate, leaf area duration and dry matter accumulation of rice compared with the no mulch. Similarly, the rice grain quality was also significantly improved by the mulch application. Mulch application increased the brown and white rice length, brown and white rice recovery percentage. The plastic mulch was more effective than straw mulch in improving the growth and grain quality of rice under AWD and AR. AWD was more effective in improving the rice grain quality compared with the AR. In crux, either of the plastic or straw mulch can be applied in fine grain basmati rice fields in order to improve the crop growth and grain quality. The effectiveness of plastic mulch surpasses the efficiency of straw mulch.

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Effect of drainage date on yield and dry matter partitioning in irrigated rice

Cited by 63 publications

References 9 publications

Assessment of MODIS spectral indices for determining rice paddy agricultural practices and hydroperiod

Assessment of MODIS spectral indices for determining rice paddy agricultural practices and hydroperiod

Contribution of Sink and Source Sizes to Yield Variation among Rice Cultivars

Mulching Improves Crop Growth, Grain Length, Head Rice and Milling Recovery of Basmati Rice Grown in Water-saving Production Systems

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