Evaluation of Application Methods and Rates of Zinc and Boron on Nitrogen, Phosphorus and Potassium Contents of Maize Leaf

Abstract

2 Plant analysis can be a useful tool in determining the general nutritional status of crops during the growing season. For this reason, a field experiment was conducted in the Fars province of Iran during 2008 season to evaluate the concentrations of nitrogen (N), phosphorus (P) and potassium (K) in maize leaf as affected by zinc sulfate and boric acid. Treatments were arranged in a randomized complete block design with two factors and three replications. Factor one included four levels of B (0, 3 and 6 kg ha −1 B added to the soil and B foliar spray with a 0.3% concentration); factor two consisted of five levels of zinc (Zn) (0, 8, 16 and 24 kg ha −1 Zn added to the soil and Zn foliar spray with a 0.5% concentration). The results of this work showed that the main effect of Zn and B levels and interaction of Zn{B on the leaf N and P concentrations was insignificant. A synergism was seen between Zn and K and also between B and K. The presence of a high amount of Zn or B in the soil prevented from increase of leaf K content, by B or Zn application, respectively.

Bacillus pumilus increases boron uptake and inhibits rapeseed growth under boron supply irrespective of phosphorus fertilization

“…Similar results, i.e. high B concentrations do not significantly correlate with P uptake, have been reported in lettuce (Petridis et al 2013), maize (Aref 2012) and yellow passion fruit seedlings (da Silva Matos et al 2015).…”

Improving use efficiency of applied phosphorus fertilizer by zinc fertilization in <italic>Basmati</italic> rice-wheat cropping system

“…Phosphorus (P) and zinc (Zn) interaction is an important phenomenon as deficiencies of both the nutrients are widespread in Indian soils particularly in intensively cropped areas (Jain and Dahama, 2007). High P availability may depress Zn concentrations in plant tissue, may increase physiological requirements for Zn (Cakmak and Marshner, 1987;Aref, 2012), or may result in accumulation of toxic levels of P in these leaves when Zn levels are low (Loneragan et al 1982). P and Zn interaction is also important globally because of increasing concern over the effects of low levels of micronutrients, especially Zn, in human food (Akhtar et al 2010).…”

Response of Date Palm Cv. Khastawi to Foliar Spray with Micro-Elements, Gibberellic Acid and Salicylic Acid

“…Manganese has an important role in regulating growth, photosynthesis and chlorophyll production [12,13], it also contributes to the activation of important enzymes in various biological processes (activates more than [14] different enzymes) and enters the synthesis of chloroplasts and increases the efficiency of photosynthesis [15,16] . It also has an important role in the process of aerobic respiration, as it enters the composition of enzymes and enzymatic companions that have a direct relationship in the respiration process, which positively affects plant growth and development through the cooperative effect between with iron [17]. It also participates in oxidation and reduction processes, especially those related to iron compounds.…”