Effect of zinc fertilization on growth, yield and micronutrients content and uptake by paddy

Abstract

Experimentation at twenty farmer's field of tribal area of Mandla district of Madhya Pradesh during Kharif 2015-16 considering zinc variability in soil as low, medium and high, and Zn levels through ZnSO4 7H2O in a RBD. The soils of selected sites wer clayey, alkaline in pH, organic carbon varied from less to marginal and varied in available Zn from 0.12 to 2.17 mg kg -1 . The rice MTU-1010 seed was sown @ 80 kg ha -1 with recommended practices and harvested at maturity (120 DAS). Significant effects were noted on growth and yield components yield content and uptake by rice: plant height in S-12 (36.73 cm), no. of tillers/ hill (9.79) in S-17, no. grains/panicle varied from 53.00 (S-6) and to 71.33 (S-7) and test weight (24.25 g) in soil S-7. Yield was recorded S-9 (4.75 t/ha) which was at par with S-14 (4.47 t ha -1 ). Highest tillers per hill -1 (8.15) were noted with basal application @ 8 kg Zn ha -1 but similar with (8.03) just 6 kg and low with no zinc. It had also increased the yield (3.57 t ha -1 ) but at par with 6.0 kg Zn ha -1 (3.44 t ha -1 ). Zinc content and its uptake varied and recorded more in 8.0 kg Zn ha -1 but equal to 6.kg Zn ha -1 .

Grain Yield and its Components of Rice Cultivar Sakha 106 as Affected by Sowing Date, Hill Spacing and Zinc Fertilizer Level

“…As reported by several investigators, zinc has beneficial effects on tillering (Alloway, 2008), fertility and grain formation (Fageria, 2009) and grain weight, through increasing photosynthesis and dry matter production (Abou Khalifa and EL-Rewainy,2012), and consequently increase grain yield. These findings were in agreement with those reported by Dhakad et al (2020), andHuang et al (2020).…”

“…The same trend was observed for sowing date x zinc fertilization level interaction, where early sowing and higher applied zinc levels increased number of effective tillers/m 2 . Similar findings were reported by Sudha and Stalin (2015) and Dhakad et al (2020) who reported that increasing zinc application levels increased fertility and number of tillers/ m 2 .…”

“…Proper fertilization management of submerged rice include the application of zinc for its enhancement of plant growth and productivity. Several researchers reported that application of adequate zinc levels increased rice grain yield (Sudha and Stalin, 2015;Ammanullah et al, 2020;Dhakad et al, 2020) through increasing yield components such as number of fertile tillers/m2 (Mafi et al, 2013) or number of grains/panicle (Mafi et al, 2013;Esfahani et al, 2014).…”