Direct and residual effect of zinc and zinc amended organic manures on the zinc nutrition of field crop

Abstract

Abstract-Zinc (Zn) deficiency is the most widespread micronutrient disorder in rice (Oryza sativa) The objective of this paper was to examine alternative evaluation methods and to identify the most informative traits that would provide realistic information for rice breeders and to map quantitative trait loci (QTLs) associated with tolerance The most severe symptom in the field was high plant mortality. Zinc interfered with translocation of iron from roots to above ground parts of Glycine max. (L.) Merrill var. Hawkeye. During periods in which zinc impeded iron translocation, it also suppressed the production of reductant by roots. Addition of iron, as a ferric metal chelate (iron ethylenediaminedihydroxyphenylacetic acid), to the growth medium overcame the interference of zinc. In the root epidermis, potassium ferricyanide formed a precipitate (Prussian blue) with ferrous iron derived from the previously supplied iron ethylenediaminedihydroxyphenylacetic acid. The reduction of ferric iron was suppressed by zinc. In a field experiment on silt loam calcareous soil, the direct and residual effect of zinc and zinc amended organic manures were studied on rice (Oryza sativa L.) followed by barley (Hordeum vulgare L.) and rice respectively. Visual Zn deficiency symptoms were observed on rice in on zinc plots. Application of zinc significantly increased the crop yield. The magnitude of yield response was intensified where zinc was applied in conjunction with organic manures. The highest Zn uptake in these three crops was recorded at 5 kg Zn amended with 10t compost /ha.

Cumulative and Residual Effects of Zinc Sulfate on Grain Yield, Zinc, Iron, and Copper Concentration in Corn and Wheat

“…Applied Zn was preferentially moved in the plant to be deposited in the grain (Dvorak, et al, 2003). Also, these results are in accordance with the findings of Gupta and Handore (2009). However, previous, direct and foliar Zn applications of Zn have positive effects on grain Zn concentration (Table 2).…”

Nutrient Content and Uptake by Wheat (Triticum aestivum L) as Influenced by Iron and Zinc Enriched FYM in Salt Affected Soils of Gujarat

“…Increase in uptake in these nutrients may be due to the increased in fertility levels attributed to the better availability of nutrients and their transport to the plant from the soil. Similar results have been reported earlier (Gupta and Handore, 2009;Khan et al, 2009). The beneficial effect of application of higher amounts of organic manure through FYM is not only favored the greater availability of throughout crop growth, fertilizer into different stages resulting in significant improvement in nutrient content and uptake.…”

Effect of Zn, Fe and FYM on Interaction between Zn and Fe on Nutrient Content, Uptake and Yield of Different Varieties of Rice (Oryza sativa L.)

“…It may be due to slow release of nutrients for a longer period after decomposition of FYM, which favored better plant growth and improved the yield components of rice. Improvement in all above yield attributes and yield has also been reported by Gupta et al, (2009). Application of 75% RFD through inorganic sources + 25% N through FYM proved significantly superior in increasing P, K, Zn and Fe content in grain over 100% RFD through inorganics whereas N content remained statistically at par with 100% recommended fertilizer dose (Table 3).…”