Agronomic fortification in wheat (Triticum aestivum L.) with zinc

Zinc is one of the essential plant micronutrient and its importance for crop productivity is similar to that of major nutrients. Intensive agriculture coupled with the continuous use of N, P, K fertilizers have remarkably increased the production but simultaneously brought about problems related to micronutrient deficiencies, particularly that of Zn in soil. Zinc deficiency is major risk factor to crop production and human health. A field experiment was conducted during Rabi Season of 2018-19 at Research Plot of Department of Agricultural Chemistry and Soil Science, Udai Pratap (Autonomous) College, Varanasi. The experiment was laid out in a randomized block design with six treatment combinations and three replications. Treatment includes T0 = Control (RDF), T1 = RDF + ZnSO4¬¬ @ 25 kg ha-1, T2= RDF + ZnSO4¬¬ @ 50 kg ha-1, T3= RDF+ T1 + 3 FS @ 0.5% ZnSO4¬¬ at PF, HS and MS, T4 = T2 + 2 FS @ 0.5% ZnSO4 at PF and MS, T5= RDF + ZnSO4¬¬ @ 5kg ha-1 + F S @ 0.5% at HS. FS= Foliar Spray, PF= Pre Flowering Stage, HS=Heading Stage, MS= Milking stage, RDF= Recommended Dose of Fertilizer. Important growth parameter (plant height and number of tillers) at different growth stages and dry matter yield (grain and straw) was determined. Application of Zn significantly affected the plant height, number of tillers, grain and straw yields over control (without Zn). Maximum was registered in the treatment T4 (ZnSO4¬¬ @ 50 kg ha-1 and 2 FS @ 0.5% ZnSO4 at PF and MS). All the treatments have significant positive effect over control in case of nutrient content in plant. The minimum nutrient content and its uptake were recorded with T0 and the maximum under the treatment T4. Application of Zn also increased the availability of nitrogen, phosphorus and potassium in post harvest soil.

[1]  A. Abbas,et al.  ENRICHMENT OF ZINC IN WHEAT THROUGH BIOFORTIFICATION: A REVIEW , 2018 .

[2]  Y. Pawar,et al.  Influence of foliar supplementation of zinc and manganese on yield and quality of potato, Solanum tuberosum L , 2016 .

[3]  P. Tiwari,et al.  Micronutrients Deficiencies vis-a-vis Food and Nutritional Security of India , 2014 .

[4]  I. Cakmak,et al.  Biofortification of rice grain with zinc through zinc fertilization in different countries , 2012, Plant and Soil.

[5]  B. Waters,et al.  Moving micronutrients from the soil to the seeds: genes and physiological processes from a biofortification perspective. , 2011, Plant science : an international journal of experimental plant biology.

[6]  W. Pfeiffer,et al.  Biofortification of durum wheat with zinc and iron , 2010 .

[7]  M. Habib.  Effect of foliar application of Zn and Fe on wheat yield and quality , 2009 .

[8]  P. White,et al.  Biofortification of crops with seven mineral elements often lacking in human diets--iron, zinc, copper, calcium, magnesium, selenium and iodine. , 2009, The New phytologist.

[9]  M. Singh.  Micronutrient nutritional problems in soils of India and improvement for human and animal health. , 2009 .

[10]  I. Cakmak.  Enrichment of cereal grains with zinc: Agronomic or genetic biofortification? , 2007, Plant and Soil.

[11]  I. Abrol,et al.  Transformation and movement of zinc in an alkali soil and their influence on the yield and uptake of zinc by rice and wheat crops , 1986, Plant and Soil.

[12]  Z. Rengel,et al.  Zinc Mobility in Wheat: Uptake and Distribution of Zinc Applied to Leaves or Roots , 2001 .

[13]  B. Sonune,et al.  Effect of Zinc and Sulphur on Protein and Oil Content of Soybean , 2001 .

[14]  S. Chandrasekaran.  Methods of Analysis of Soils, Plants, Waters and Fertilisers , 1993 .

[15]  V. J. G. Houba,et al.  A novel digestion technique for multi-element plant analyses , 1983 .

[16]  W. Lindsay,et al.  Development of a DTPA soil test for zinc, iron, manganese and copper , 1978 .

[17]  C. I. Rich.  Soil Chemical Analysis , 1958 .

[18]  S. R. Olsen,et al.  Estimation of available phosphorus in soils by extraction with sodium bicarbonate , 1954 .