Variation in rice quality of different cultivars and grain positions as affected by water management

Grain quality assessment of direct seeded basmati rice (Oryza sativa L.) under different irrigation regimes in Indian Punjab

“…well-watered (WW), moderate dry-wet alternate irrigation (MD: soil was re-watered when the soil water potential reached -20 kPa) and severe dry-wet alternate irrigation (SD: soil was re-watered when the soil water potential reached -40 kPa), the treatments were imposed from 7 days after heading up to maturity and it was found that compared with WW, MD significantly increased, whereas SD significantly reduced, brown, milled and head rice recovery. Reduction in the water input reduced brown as well as head rice recovery was also reported by Cheng et al (2003). Physical properties of paddy: The hectolitre weight of paddy as well as length-breadth ratio of paddy were not influenced significantly by any of the irrigation schedules (Table 1).…”

Effects of rice or wheat residue retention on the quality of milled japonica rice in a rice–wheat rotation system in China

“…Studies conducted in recent years indicate that increased temperature, soil moisture, and fertilizer affect rice quality. However, research on the relative effects of rice versus wheat residue retention on subsequent rice grain quality in rice-wheat rotation systems is rare [3][4][5][6][7][8][9][10][11][12].…”

Integrating remote sensing and GIS for prediction of rice protein contents

“…Although it might be possible to (Chen et al 2003) and uncontrollable factors such as the amylose content and soil properties (Oosato et al 1996). Therefore, it is necessary to accumulate the data on PCs with field management factors and increase the number of factors that affect rice quality to offer the identified information to farmers.…”

“…Generally, fatty acid is affected by the term of storage, but protein and amylose contents are affected by management conditions such as variety, soil properties, weather condition and field management (Ryu et al 2004). The amylose contents are mainly affected by varieties and soil condition (Koutroubas et al 2004), but the protein contents (PCs) are affected by temperature during ripening stage (Matsue 1995;Wada et al 2002), amount of nitrogen fertilizer (Ryu et al 2005), water management (Chen et al 2003) and optimal timing for transplanting (Ueda et al 1998) or harvest (Matsue et al 1991). However, the PC studies were experiments with small plots or pot cultivation, with several doses of nitrogen fertilizer, and with controlled environmental parameters.…”