Impact of Potassium Silicate Compound as Foliar Application on the Growth, Yield and Grains Quality of GIZA 179 Rice Cultivar.

Abstract

Two field experiments were conducted at the Experimental Farm of Rice Research Department (R.R.D.), Sakha, Kafrelsheikh, Egypt during 2015 and 2016 seasons. In order to examine the impact of potassium silicate compound as foliar application on the growth, yield and grains quality of Giza 179 rice cultivar. A randomized complete block design (R.C.B.D.) with four replications was used in the two seasons. Foliar applications of potassium silicate, at the rate of control (without potassium silicate), 0.5%, 1.0%, 1.5% and 2.0 % potassium silicate were sprayed twice with the same concentration at 15 and 30 days after transplanting. The studied characters were; chlorophyll content in flag leaf, leaf area index, dry matter accumulation, plant height, no. of tillers per m 2 , no. of panicles per m 2 , panicle length cm, panicle weight g, total no. of grains per panicle, thousand grain weight, grain yield ton/ha, percentages of hulling, milling and head rice and silicon content in stems, grains and straw .The results showed that application of potassium silicate caused an increased in growth characters, yield, yield attributes and grains quality of Giza 179 rice cultivar. Potassium silicate at the rate of 1,0% produced the maximum values of chlorophyll content in flag leaf, leaf area index, dry matter accumulation, plant height, number of tillers/m 2 , number of panicles/m 2 , length of panicle (cm), weight of panicle (g), grain yield(ton/ha), as well as, hulling, milling, head rice percentages of Giza 179 rice cultivar, while sprayed Potassium silicate at the rate of 1.5 % resulted the maximum total number of grains/panicle and the rate of 2.0% produced the maximum silicon content in stems, grains and straw. All the other parameters showed overlapping results of different potassium silicate levels. According to the previous results, it could be concluded that using potassium silicate as foliar application twice with the same concentration 1.0% at 15 and 30 days after transplanting was the best treatment for improving growth and obtaining the greatest grain yield besides the grains quality of Giza 179 rice cultivar.

Foliar Application of Zinc and Potassium Mitigates the Effect of Salt Stress on Wheat

“…Silica may increase IAA and GA3 production while decreasing ABA production. The current findings are in a good agreement with those reported by Wissa (2017) and Aurangzaib et al, (2021). The results also obtained in the present investigation concerning the effect of K-humate, the favorable effects of humic acids on yield components could be attributed to increased amounts of endogenous cytokinin and auxins, which would likely lead to higher yields (Salem et al, 2017).…”

The Integrated Approach for Organic and Inorganic Sources of Nutrients to Enhance Performance of Cauliflower (Brassica oleracea var. botrytis L.) under Sub-Humid Climatic Conditions

“…This corroborated the findings by [63,64]. According to a similar study by [12], addition of silica at 120 kg/ha showed the maximum growth and yield of rice.…”

“…Organic and inorganic fertilizers along with silicon increased the uptake of nutrients, water use efficiency, and other physiological processes of plants, which increased plant height as evidenced by [12] in rice. The results in terms of more leaves per plant and a higher leaf area index were corroborated with the findings of [28,29] in broccoli and [25] while working with cauliflower.…”

“…Plants with silicon improved the ability of plants to withstand environmental stress and improved plant growth, production, and quality [11]. It has long been believed that silicon fertilizer is essential for promoting vegetative growth and healthy development and that the proper amount of silicon is required for cell development and differentiation [12].…”

Influence of Potassium Silicate on Water Deficit Tolerance for Some Rice Genotype تأثير سلکيات البوتاسيوم لتحمل نقص الماء لبعض الطرز الوراثية لمحصول الارز

“…The increase in silica levels led to the plants being more erect and reduced the self-shading of lower leaves of the canopy, which made the plants more photosynthetic efficient and better able to exploit the space available to intercept solar radiation, consequently increasing leaf area index, dry matter, and plant height. A similar result was found by Zanão Júnior et al (2010), De Oliveira et al (2016), Wissa. (2017 and Mikhael et al (2018).…”