Sprinkler irrigation is effective in reducing cadmium concentration in rice (Oryza sativa L.) grain: A new twist on an old tale?

Tuning of the Amount of Se in Rice (Oryza sativa) Grain by Varying the Nature of the Irrigation Method: Development of an ICP-MS Analytical Protocol, Validation and Application to 26 Different Rice Genotypes

“…More recently, we reported the dramatically opposite behavior that two intermittent methods of irrigation apparently similar among them (i.e., the aforementioned SP irrigation and the saturation irrigation, SA) can exercise on the Cd bioaccumulation on rice grain. In a field experiment (26 different rice genotypes cultivated along two consecutive agricultural years), the average Cd amount in rice grain irrigated by SP is 20% less than that the corresponding amount measured in rice irrigated by CF, whereas rice irrigated by SA substantiates an outstanding average increase of 900% of the Cd amount vs. rice irrigated by CF [47]. Hence, following our interest for the study of the influence of alternative methods of irrigation for rice on the bioaccumulation phenomena of elements of potential health concern for humans, we think deserving of interest to ascertain if the adoption of intermittent methods of irrigation may play a role in modulating the amount of Se in rice grain.…”

“…The main features of the water management methods used have been reported below, whereas their extensive description has been reported elsewhere [47].…”

“…In order to overcome these opposite threats, different methodological approaches have been adopted in order to enhance the Se amount in rice from low-Se soils [33][34][35][36][37], whereas the reduction of the bioaccumulation of Se in rice grain cultivated in Se-rich soils has been accomplished by cultivating low Se-bioaccumulating rice genotypes [38] or by means of phytoremediation techniques [39]. Although the adoption of water management techniques different from the continuous flooding (i.e., the traditional technique of irrigation for rice, still used worldwide) has been proven to be effective in modulating the bioaccumulation phenomena of toxic elements like As [40][41][42][43] and Cd [44][45][46][47] in rice grain, at the best of our knowledge a very scarce attention was until now paid to study the influence of changes in the method of irrigation of rice on its Se concentration [48,49]. Only two pot studies performed first by Li and coworkers [48] and-more recently-by Zhou and coworkers [49] drew attention to the effectiveness of intermittent methods of irrigation (i.e., the so-called "aerobic irrigation" [48,49] and the "alternate flood and aerobic irrigation" [49]) on the bioaccumulation of Se in rice grains.…”

How the environmental fate of clomazone in rice fields is influenced by amendment with olive‐mill waste under different regimes of irrigation and tillage

“…no tillage) has recently been implemented in European countries as a productive and sustainable alternative to the traditional rice flooding system. 4,5 Indeed, Sánchez-Llerena et al 2 found similar rice yields under aerobic and anaerobic management regimes using no-tillage, but with the advantage of an on average 75% water saving in the former. However, lower short-term rice grain yields have been found under non-flooding compared with flooding regimes.…”

“…For this reason, aerobic (non‐flooding) rice production with and without conservation agriculture practices (i.e. no tillage) has recently been implemented in European countries as a productive and sustainable alternative to the traditional rice flooding system . Indeed, Sánchez‐Llerena et al .…”