Zinc fertilization effects on agromorphological and quality parameters of commonly grown rice

Abstract

Among the micronutrients, zinc deficiency is widespread throughout the world particularly in low land rice fields causing low yields and affecting nutritional quality of the produce. In present investigation, 26 rice cultivars including some locals, aromatics, HYVs and hybrids grown on an Inceptisols with no Zn, basal Zn and soil+foliar applied Zn were evaluated for agro-morphological and quality parameters in a strip plot design having three replications during kharif season for consecutive two years (2009 and 2010). Rice cultivars differed significantly in their native agro-morphological parameters as well as among cultivar categories. Grain and straw yield as well as harvest index of different cultivars showed wide variations both with and without Zn application. On average, grain yields of different rice cultivars increased by 29% and 22% with soil plus foliar and only soil application of Zn, respectively. Regarding yield efficiency, HYV showed highest efficiency followed by hybrid, aromatic and local cultivars, irrespective of Zn fertilization. Applications of Zn, both as basal and as soil+foliar application significantly reduced the Fe content in brown rice irrespective of the cultivar grown.

Agronomic biofortification in rice varieties through zinc fertilization under aerobic condition

“…Inglongkiri showed higher value of zinc content in brown rice over other varieties. This might be due to the differences in growth parameters of the cultivars (Senasdhira and Graham, 1999;and Saha et al, 2013) and also the genetic make-up of the variety which might have helped in better uptake and transportation into the grains.…”

Effect of Zinc and Iron Fortification on Growth and Developmental Stages of Upland Irrigated Rice (Oryza sativa L.) Cultivars

“…The existence of a negative relationship between irrigation and iron and zinc uptake (Scagel et al, 2012) and a similar negative relationship between phosphorus and iron and zinc uptake (Saha et al, 2013) also lead to lower the accumulation of these micronutrients in the cereal grains. Since the edible parts of the cereals are poor in iron and zinc, thus heavy dependence of people from developing countries on these foods results in the development of large-scale iron and zinc malnutrition.…”

Crop Establishment Methods, Varieties and Levels of Zinc on Growth and Yield of Rice in Chitwan, Nepal

“…Zinc take part in carbonic activity. Carbonic activity and more carbohydrate accumulation increase test weight (Saha et al 2013). Ghasemi et al (2013) reported application of zinc fertilizer in rice increased TGW over no application of zinc.…”