Effect of Foliar Application of Zinc, Selenium, and Iron Fertilizers on Nutrients Concentration and Yield of Rice Grain in China

Abstract

Zn, Se, and Fe levels in 65 Chinese rice samples were investigated, and the results indicated that these micronutrients contents of rice products from different location varied considerably. The mean contents of Zn, Se and Fe in these rice samples were 21.5+/-1.8, 0.020+/-0.012, and 12.4+/-4.3 mg kg(-1), respectively, which were too low to meet the micronutrient demands for the population feeding on the rice as staple. A field orthogonal experiment L9 (3(4)) was conducted on rice cultivar Wuyunjing 7, to evaluate the effect of Zn, Se, and Fe foliar fertilization on the concentration of these micronutrients, yield, and protein and ash content of rice grain. The results indicated that Zn and Se were the main variables influencing the Zn, Se, and Fe content of rice, and the optimal combination of fertilization for enhancing these micronutrients was 0.90 kg ha(-1) Zn, 0.015 kg ha(-1) Se, and 0.90 kg ha(-1) Fe. Under the optimal application condition, Zn, Se, and Fe content of rice could be significantly increased by 36.7%, 194.1%, and 37.1%, respectively, compared with the control, without affecting grain yield and protein and ash content of rice products. Moreover, in the confirmation experiment on rice cultivar Ninggeng 1, the optimal fertilization could increase the Zn, Se, and Fe content of rice up to 17.4, 0.123, and 14.2 mg kg(-1), respectively.

Influence of Integrated Nutrients on Growth, Yield and Quality of Maize (Zea mays L.)

“…This increase may be mainly due to the additional availability of nutrients as foliar sprays where T 5 and T 6 treatments results were not statistically significant as compare to T 4 treatment's out come. Its might be the multi-nutrients composition of solution which enabled maize plants of treatment T 4 to attained maximum grain yield and yield attributes while decline trend in other multi-nutrients treatments might be due to the negative interaction of micronutrients as their concentrations increases per treatment [25]. Lisuma et al (2008) [26]who reported that the use of micronutrients contributed to increase yields when applied in combination of macronutrients as compared to conventional fertilization which lack of micronutrients.…”

Arsenic Limits Trace Mineral Nutrition (Selenium, Zinc, and Nickel) in Bangladesh Rice Grain

“…Selenium (Se) and zinc (Zn) are both micrometerutrients generally found lacking in polished rice, posing a serious problem for those reliant on rice as their dietary mainstay (10,11). Indeed 15% of the world's population are estimated to be Se-deficient (12), with there being considerable overlap with those also having to contend with high As exposures (13).…”

Effects of planting soybean in summer fallow on wheat grain yield, total N and Zn in grain and available N and Zn in soil on the Loess Plateau of China

“…After oven-drying at 65 • C for 48 h, they were crushed with a stainless steel grinder and stored in sealed plastic bags for chemical analysis. In 2008In -2010, ten rows were randomly selected to calculate grain and biomass yield, whereas in 2010-2011, all aboveground parts of wheat in each treatment were harvested with a combine harvester to calculate yield.…”

“…Attention has focused on human health issues related to the low levels of nutrients in crops (Welch, 2002;Welch and Graham, 2004). Most attempts to improve the nutrient status of crops involve fertilizer application (Yang et al, 2004;Fang et al, 2008;Zhang et al, 2011). Enhancement of grain nutrients by rotation with legumes has rarely been reported.…”