Irrigated Wheat on a Calcareous Soil as Affected by Application of Nitrogen, Phosphorus, Potassium, and Zinc: I. Yield, Composition, and Number of Heads
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Human zinc (Zn) deficiency is a worldwide problem, especially in developing countries due to the prevalence of cereals in the diet. Among different alleviation strategies, genetic Zn biofortification is considered a sustainable approach. However, it may depend on Zn availability from soils. We grew Zincol-16 (genetically-Zn-biofortified wheat) and Faisalabad-08 (widely grown standard wheat) in pots with (8 mg kg−1) or without Zn application. The cultivars were grown in a low-Zn calcareous soil. The grain yield of both cultivars was significantly (P≤0.05) increased with that without Zn application. As compared to Faisalabad-08, Zincol-16 had 23 and 41% more grain Zn concentration respectively at control and applied rate of Zn. Faisalabad-08 accumulated about 18% more grain Zn concentration with Zn than Zincol-16 without Zn application. A near target level of grain Zn concentration (36 mg kg−1) was achieved in Zincol-16 only with Zn fertilisation. Over all, the findings clearly signify the importance of agronomic Zn biofortification of genetically Zn-biofortified wheat grown on a low-Zn calcareous soil.

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The change in agrochemical indicators of soil fertility under the influence of heavy metal contamination

Interdepartmental thematic scientific collection "Agriculture" ◽

10.31073/zem.91.17-21 ◽

2016 ◽

Vol 2 (91) ◽

pp. 17-21

Author(s):

S. H. Korsun ◽

N. I. Dovbash

Keyword(s):

Heavy Metals ◽

Forest Soil ◽

Heavy Metal Contamination ◽

Gray Forest Soil ◽

Mineral Fertilizers ◽

Background Concentration ◽

Physico Chemical ◽

Natural Background Concentration ◽

Nitrogen Phosphorus ◽

Hydrolytic Acidity

The aim of the study was to establish changes in the physico-chemical and agrochemical characteristics of gray forest large-clay loamy soil, depending on the contamination of ecotopes by heavy metals. Methods. Field, laboratory, mathematical and statistical. Results. The results of the study of the soil of areas with an over-dimensioned content of heavy metals and the transformation of agrochemical characteristics of gray forest soil in the cultivation of corn for grain. It was established that under conditions of systematic application of mineral fertilizers in agrocenoses, an increase in the lead concentration to 100 mg/kg, cadmium to 2,0, zinc to 50 mg/kg in gray forest soil did not result in a decrease in the amount available forms of nitrogen, phosphorus, potassium by plants, compared with the natural background. Concentration of lead in the amount of 1000 mg/kg, cadmium – 20, zinc – 500 mg/kg marked an increase in exchange and hydrolytic acidity and loss of humus.

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МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ ДИНАМИКИ МИНЕРАЛЬНОГО ПИТАНИЯ РАСТЕНИЙ В СИСТЕМЕ «УДОБРЕНИЕ-ПОЧВА-РАСТЕНИЕ»

Биофизика ◽

10.31857/s0006302920060228 ◽

2020 ◽

Vol 65 (6) ◽

pp. 1219-1229

Author(s):

В.А. Четырбоцкий ◽

◽

А.Н. Четырбоцкий ◽

Б.В. Левин ◽

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...

Keyword(s):

Experimental Data ◽

Temporal Dynamics ◽

Plant Biomass ◽

Environmental Parameters ◽

Parametric Identification ◽

Agricultural Crop ◽

Parameter System ◽

Plant Nitrogen ◽

Rhizosphere Microorganisms ◽

Nitrogen Phosphorus

A numerical simulation of the spatial-temporal dynamics of a multi-parameter system is developed. The components of this system are plant biomass, mobile and stationary forms of mineral nutrition elements, rhizosphere microorganisms and environmental parameters (temperature, humidity, acidity). Parametric identification and verification of the adequacy of the model were carried out based on the experimental data on the growth of spring wheat «Krasnoufimskaya-100» on peat lowland soil. The results are represented by temporal distributions of biomass from agricultural crop under study and the findings on the content of main nutrition elements within the plant (nitrogen, phosphorus, potassium). An agronomic assessment and interpretation of the obtained results are given.

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