Zinc availability to young wheat plants in Darling Downs black earths

1980 ◽  
Vol 31 (6) ◽  
pp. 1083 ◽  
Author(s):  
B Radjagukguk ◽  
DG Edwards ◽  
LC Bell
Keyword(s):  
Dry Matter ◽  
Ammonium Acetate ◽  
Zinc Concentration ◽  
Ammonium Carbonate ◽  
Extraction Methods ◽  
Dry Matter Yield ◽  
Zinc Status ◽  
Available Zinc ◽  
Zinc Application ◽  
Critical Zinc Concentration

A pot experiment in which wheat cv. Timgalen was grown in a glasshouse for 6 weeks clearly established that some of the 12 Darling Downs black earths investigated were zinc deficient. Rates of application between 1.2 and 3.7 kg zinc ha-1 (as ZnSO4.7H2O) were sufficient to achieve maximum or near-maximum dry matter yield of tops on the deficient soils. Plant zinc concentration and total zinc uptake in the tops increased in all soils with increasing rates of zinc application. The critical zinc concentration in the wheat tops associated with 90% of maximum dry matter yield was 20 �g g-1. Three extraction methods were used to determine the initial available zinc status of the soils. All methods gave lower extractable zinc values in the acid (pH <7 . 0 in 0.01 M calcium chloride) black earths (Mywybilla soils) than in the alkaline black earths. Critical extractable zinc values were much lower in the acid black earths. EDTA-ammonium carbonate (pH 8.6) more effectively separated zinc-deficient and marginally deficient from adequately supplied alkaline black earths than either EDTA-ammonium acetate (pH 7.0) or DTPA (pH 7.3). The critical extractable zinc value for the alkaline black earths with EDTA-ammonium carbonate was 0.61 �g g-1.

THE EFFECT OF ZINC RATE AND PLACEMENT ON YIELD AND ZINC UTILIZATION BY BLACKBEAN (Phaseolus vulgaris var. Black Turtle)

1989 ◽  
Vol 69 (2) ◽  
pp. 367-372 ◽  
Author(s):  
R. J. SOPER ◽  
G. W. MORDEN ◽  
M. W. HEDAYAT
Keyword(s):  
Reaction Zone ◽  
Calcareous Soil ◽  
Dry Matter ◽  
Zinc Concentration ◽  
Soil Reaction ◽  
Dry Matter Yield ◽  
Zinc Concentrations ◽  
Method Of Placement ◽  
Zinc Utilization ◽  
Zinc Placement

Growth chamber experiments were conducted to investigate the effect of size of fertilizer reaction zone, rate of added zinc and method of placement of added zinc on the dry matter yield, zinc concentration and zinc uptake of blackbeans grown on a calcareous soil. Relationships between zinc concentrations in the plant, zinc utilization by the plant and zinc concentration in the soil reaction zone were obtained. An equation was developed relating zinc utilization to zinc concentration in the fertilizer band, and a figure was derived showing how increasing the size of the fertilizer zone impacts upon the zinc concentration of the plant. The results indicate that inorganic zinc fertilizers must be mixed as uniformly as possible for maximum effectiveness. Key words: Zinc, placement, calcareous, soil, blackbean, Phaseolis vulgaris

scholarly journals Influence of micronutrients on dry matter yield and interaction with other nutrients in annual crops

2002 ◽  
Vol 37 (12) ◽  
pp. 1765-1772 ◽  
Author(s):  
Nand Kumar Fageria
Keyword(s):  
Common Bean ◽  
Dry Matter ◽  
Upland Rice ◽  
Dry Matter Yield ◽  
Zinc Treatment ◽  
Crop Species ◽  
Annual Crops ◽  
Macro And Micronutrients ◽  
Red Latosol ◽  
Zinc Application

The objective of this work was to determine the influence of Zn, Mn and Cu on shoot dry matter yield and uptake of macro and micronutrients in upland rice, common bean and corn. Six greenhouse experiments were conducted using a Dark Red Latosol (Typic Haplusthox). Treatments consisted of application of Zn at 0, 5, 10, 20, 40, 80 and 120 mg kg-1, of Mn at 0, 10, 20, 40, 80, 160, 320 and 640 mg kg-1 and of Cu application at 0, 2, 4, 8, 32, 64 and 96 mg kg-1. Zinc increased yield of rice, Mn increased yields of corn and bean and Cu improved yields of rice and bean. Uptake of N, Ca, and Cu in rice was decreased by zinc treatment. In common bean, uptake of N, Mg, and Cu was increased by zinc application, whereas, uptake of P was decreased. Manganese increased uptake of Mg, Zn and Fe and decreased uptake of Ca, in corn. Uptake of K, Zn and Mn was increased and uptake of P and Cu was decreased by Mn application, in bean. Copper had positive and negative interactions in the uptake of macro and micronutrients, depending on crop species and nutrients involved.

Response of Paddy (Oryza sativa) as Influenced by Zinc Application and Available Zinc Status of Soils

1982 ◽  
Vol 145 (5) ◽  
pp. 448-454 ◽  
Author(s):  
G. S. Rathore ◽  
S. B. Dubey ◽  
R. S. Khamparia ◽  
B. L. Sharma ◽  
S. B. Sinha
Keyword(s):  
Oryza Sativa ◽  
Zinc Status ◽  
Available Zinc ◽  
Zinc Application

Influence of zinc supply on the phytotoxicity of cadmium in maize (Zea mays L.) grown on cadmium-contaminated soil

2012 ◽  
Vol 60 (1) ◽  
pp. 37-46 ◽  
Author(s):  
M. Khurana ◽  
B. Kansal
Keyword(s):  
Dry Matter ◽  
Sandy Loam ◽  
Cadmium Concentration ◽  
Dry Matter Yield ◽  
Phytotoxic Effect ◽  
Loam Soil ◽  
Relationship Of ◽  
The Relationship ◽  
Zinc Application ◽  
Cadmium Contaminated Soil

Zinc and cadmium have been found to interact with each other differently under different conditions. The zinc supply may enhance or offset the phytotoxicity of Cd. Therefore, in a pot experiment, a sandy loam soil (Typic Ustipsamments) was treated with cadmium at rates of 0, 10, 20 and 40 mg kg−1 and with zinc at rates of 0 and 20 mg kg−1 soil to assess their effect on dry matter yield and the concentrations of Cd and micronutrients. There was a significant decrease in dry matter yield due to the phytotoxic effect of Cd. The dry matter yield was not affected by the application of zinc at any rate of Cd application. The concentration and uptake of Cd in the crop increased gradually at increasing rates of cadmium application. The increase in cadmium concentration was greater in the presence of zinc than in its absence. This suggests that the effect of soilapplied Zn is reflected in the enhancement of the Cd content in plants. Thus, zinc application cannot offset the toxic effect of Cd. The relationship of Cd with Zn and Fe was synergistic at all rates of Cd application, whereas Mn and Cu exhibited an antagonistic relationship.

Optimum harvest date of maize for biogas and silage purposes

2009 ◽  
Vol 57 (2) ◽  
pp. 119-125
Author(s):  
G. Hadi
Keyword(s):  
Dry Matter ◽  
Biogas Production ◽  
Weather Conditions ◽  
Vegetation Period ◽  
Dry Mass ◽  
Matter Content ◽  
Harvest Date ◽  
Dry Matter Content ◽  
Dry Matter Yield ◽  
Vegetative Organs

The dry matter and moisture contents of the aboveground vegetative organs and kernels of four maize hybrids were studied in Martonvásár at five harvest dates, with four replications per hybrid. The dry matter yield per hectare of the kernels and other plant organs were investigated in order to obtain data on the optimum date of harvest for the purposes of biogas and silage production.It was found that the dry mass of the aboveground vegetative organs, both individually and in total, did not increase after silking. During the last third of the ripening period, however, a significant reduction in the dry matter content was sometimes observed as a function of the length of the vegetation period. The data suggest that, with the exception of extreme weather conditions or an extremely long vegetation period, the maximum dry matter yield could be expected to range from 22–42%, depending on the vegetation period of the variety. The harvest date should be chosen to give a kernel moisture content of above 35% for biogas production and below 35% for silage production. In this phenophase most varieties mature when the stalks are still green, so it is unlikely that transport costs can be reduced by waiting for the vegetative mass to dry.

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