Long-term effect of high phosphorus doses on zinc status of maize on a non-calcareous loamy soil (original) (raw)
Related papers
African Journal of Biotechnology, 2010
Zinc (Zn) deficiency is a worldwide nutritional problem resulting in significant reduction in crop yields. It is often observed in calcareous soils and also after heavy doses of phosphorus (P) fertiliser applications, the latter being termed P-induced Zn deficiency. For management purposes, it is important to understand how crops with different root architecture would respond to P-induced Zn deficiency. This glasshouse study was aimed at determining the effects of increased P application on shoot dry matter, shoot P and Zn concentration in wheat and maize grown in a calcareous soil supplied with five rates of P (0, 30, 60, 90 and 120 mg kg-1 soil). Compared to the control treatment, increasing soil P supply increased shoot P concentration (2.7-3.0 fold), while decreased shoot dry matter (10 and 23%) and shoot Zn concentration (75 and 82%) (wheat and maize, respectively). In wheat, the reduction in shoot dry matter was associated with Zn concentrations below the critical level indicating P-induced Zn deficiency as being the main cause of reduced shoot growth. In maize, the reduction in shoot dry matter was accompanied by higher than adequate shoot P concentrations and lower than adequate shoot Zn concentrations suggesting P toxicity and Zn deficiency as the main contributing factors for reduced shoot growth. The results suggest that heavy applications of P fertilizers can induce not only Zn deficiency but also P toxicity depending on the crops thus P application rates should be chosen carefully.
Effect of phosphorus fertilization on Zn and Cd contents in soil and corn plants
Nutrient cycling in …, 1999
The main purpose of the trial established in 1965/66 has been to monitor the effect the use of NPK fertilizers has on yields of cultivated plants and the maintenance of soil fertility. The trial which included 20 fertilization treatments, covers a total of 8 ha and is divided into four fields (2 ha each), where four crop species (wheat, corn, sugar beet, and sunflower) are grown in rotation. The effect of a continuous use of increasing P fertilizer rates on Zn and Cd contents in the soil and corn plants were monitored in 5 different fertilization treatments from the above trial on a chernozem soil. The application of increasing P rates did not decrease the content of available Zn in the soil. However, the uptake of Zn by corn plants (stalk and leaves) was significantly higher in the unfertilized check plot than plots fertilized with increasing P rates. Although P fertilizers are considered a major anthropogenic source of soil pollution with Cd, we found that during the 30-year trial there was no significant increase in the plots treated with 50, 100 and 150 kg P 2 O 5 ha −1 in comparation to the unfertilized check plot.
2018
An experiment was conducted during Rabi season (October – March) 2017-18 to study the “Effect of different levels of Phosphorus and Zinc on the physico-chemical properties of soil, Growth and yield of maize (Zea mays L.). Var. Shivani” on crop research farm Department of Soil Science & Agricultural Chemistry, the design applied was 3x3 factorial Randomized Block Design having three factors with three levels of Phosphorus @ 0%, 50%, and 100 % ha and three levels of Zinc @ 0%,50% and 100% ha 1 respectively. The best treatment was T8 -P2+ Z2 [@ 100% phosphorus ha+ 100% Zinc ha] that showed the highest yield regarding, gave the best results with respect to plant height 169.58 cm, number of leaves per plant 14.41, leaf length per plant 54.5 cm, no. of grains per cob 313.66 cm and cob length 16.5 cm, it gave highest yield, 49.61 q ha as grain yield and 73.6 q ha as straw yield. In post-harvest soil properties, the important parameter on chemical properties on maize crop different treatmen...
Journal of the National Science Foundation of Sri Lanka, 2016
Zinc (Zn) deficiency in plant tissues is a reflection of both genetic and soil-related factors and is the most widespread problem in cereal crops worldwide, resulting in severe losses in the yield and nutritional quality. Developing cost-effective and quick solutions to Zn deficiency is, therefore, highly important. An experiment was conducted during 2009 − 2010, to assess the effects of various modes and concentrations of applied Zn on wheat yield and nutritional quality grown in alkaline soils. Both soil addition and foliar spray of ZnSO 4 significantly increased grain yield, 1000 grain weight and grain protein content, while its effect on biological yield and grain protein composition was not significant. Foliar spray of 0.5 % and 1.0 % ZnSO 4 increased grain yield by 10 and 18.8 %, respectively while its soil application at the rate of 5, 10 and 15 kg ha-1 increased grain yield by 18, 32 and 41%, respectively over the control. The treatments receiving ZnSO 4 as 5 kg ha-1 soil + 1.0 % foliar, 15 kg ha-1 soil + 1.0 % foliar and 5 kg ha-1 soil + 0.5 % foliar application recorded 29.5, 29.0 and 27.5 % higher protein contents, respectively over the control. Comparing the value cost ratios (VCR) for the treatments showing higher grain yield and protein content, the VCR for 5 kg ha-1 ZnSO 4 as soil + 1.0 % ZnSO 4 as foliar (10.23) was three times higher than the VCR for 15 kg ha-1 ZnSO 4 as soil + 1.0 % ZnSO 4 as foliar (3.46), thus confirming the superiority of the former over the latter in terms of effectiveness. The results further revealed that despite presumably sufficient native Zn concentration in the soils under study (1.95 mg kg-1), the crop responded positively to Zn treatment and therefore the Zn level of sufficiency (1 mg kg-1) should be reconsidered in accordance with the nature and type of soils.
Phosphorus-induced zinc deficiency in maize (Zea mays L.) on a calcareous chernozem soil
Agrokémia és Talajtan
A long-term fertilizer experiment was set up on a calcareous chernozem soil with a wheat-maize-maize-wheat crop rotation, as part of the National Long-Term Fertilization Experiments (NLTFE) Network, set up with the same experimental pattern under different soil and agro-climatic conditions in Hungary. The effect of P fertilization on the soil, on maize yields, and on leaf P and Zn contents in the flowering stage were examined in the trials. In certain years, foliar zinc fertilizer was applied, in order to prove that yield losses due to P-induced Zn deficiency can be compensated by Zn application. Calcium-ammonium nitrate, superphosphate and 60% potassium chloride were used as NPK, and Zn-hexamine (in 1991) and Zn-sulphate (in 2006) as foliar Zn fertilizers. In the years since 1970, averaged over 36 maize harvests, treatments N3P1K1 and N4P1K1, involving annual rates of 150 to 200 kg ha−1 N, 100 kg ha−1 K2O and 50 kg ha−1 P2O5, gave the highest yields (8.3 t ha−1 grain on average). A...
African Journal of Biotechnology, 2010
Zinc (Zn) deficiency is a worldwide nutritional problem resulting in significant reduction in crop yields. It is often observed in calcareous soils and also after heavy doses of phosphorus (P) fertiliser applications, the latter being termed P-induced Zn deficiency. For management purposes, it is important to understand how crops with different root architecture would respond to P-induced Zn deficiency. This glasshouse study was aimed at determining the effects of increased P application on shoot dry matter, shoot P and Zn concentration in wheat and maize grown in a calcareous soil supplied with five rates of P (0, 30, 60, 90 and 120 mg kg-1 soil). Compared to the control treatment, increasing soil P supply increased shoot P concentration (2.7-3.0 fold), while decreased shoot dry matter (10 and 23%) and shoot Zn concentration (75 and 82%) (wheat and maize, respectively). In wheat, the reduction in shoot dry matter was associated with Zn concentrations below the critical level indicating P-induced Zn deficiency as being the main cause of reduced shoot growth. In maize, the reduction in shoot dry matter was accompanied by higher than adequate shoot P concentrations and lower than adequate shoot Zn concentrations suggesting P toxicity and Zn deficiency as the main contributing factors for reduced shoot growth. The results suggest that heavy applications of P fertilizers can induce not only Zn deficiency but also P toxicity depending on the crops thus P application rates should be chosen carefully.
2020
A factorial pot experiment in split-split plot design was carried out to study the effect of phosphorus-zinc (P-Zn) interaction in calcareous Torrifluvent soil on wheat (Triticum astevum L.) yield, concentration and content of P and Zn in grain and straw. Phosphorus, as triple superphosphate (TSP), was added to soil at three rates (0, 30 and 60 mg P2O5 kg -1 soil, symbolized P0, P30 and P60, respectively). Zinc also was applied at three rates (0, 10 and 20 mg kg -1 soil, symbolized Zn0, Zn10 and Zn20, respectively). Two Types of zinc carriers were also examined, i.e. sulphate (Zn-Sulphate) and ethylene diamine tetra acetic acid (Zn-EDTA). Results showed a positive significant effect of P-Zn interaction on grain yield, straw yield, concentration and content of P in grain and straw, Zn content in grain. Whereas, the grain-Zn concentration decreased with increasing phosphorus level. The highest grain and straw yields were at the treatment P60×Zn20 -sulphate. The highest grain-P concent...
2020
An investigation was carried out on permanent plots at IGKV, Raipur research farm during kharif 2019 in order to conduct experiment entitled” “Evaluation of zinc fractions as influenced by long term fertilization under rice-wheat cropping system”. ”Ten treatments for this study comprised no fertilizer “control,50% NPK, 100% NPK, 150% NPK and (NPK) combined with ZnSO4 (100% NPK + ZnSO4 @ 10kg ha-1), 100% NP, 100% N, 100% NPK + FYM @ 5t ha-1, 50% NPK + BGA @ 10 kg ha-1 and green manure (50% NPK + GM @ 40kg h-1), laid out at randomized complete block design with four replications.” The different form of zinc fractions were analyzed at surface (0-15 cm) and subsurface (15-30 cm) soil, respectively. Among “various forms of zinc fractions namely, water soluble plus exchangeable Zn (WSEX-Zn), organically bound Zn (Org-Zn), amorphous sesquioxide bound Zn (AMOX-Zn), crystalline sesquioxide bound Zn (CRYOX-Zn), residual Zn and total Zn.” The data on zinc fractions revealed that the continuous...
Behavior of Zinc from Six Organic Fertilizers Applied to a Navy Bean Crop Grown in a Calcareous Soil
Journal of Agricultural and Food Chemistry, 2007
The objective of this study was to compare the mobility, leaching, availability, and relative effectiveness of Zn from Zn-polyhydroxyphenylcarboxilate (Zn-PHP), Zn-HEDTA (Zn-N-2-hydroxyethyl-ethylenediaminetriacetate), Zn-EDDHSA [Zn-ethylenediamine-di-(2-hydroxy-5-sulfophenylacetate)], Zn-EDTA (Zn-ethylenediaminetetraacetate), Zn-S,S-EDDS (Zn-ethylenediaminedisuccinate), and Zn-EDTA-HEDTA sources by applying different Zn rates (5 and 10 mg kg-1) to a calcareous soil under greenhouse conditions. A lysimeter experiment was carried out for 60 days and using navy bean (Phaseolus vulgaris L.) as an indicator plant. The Zn available to the plant and easily leachable Zn were determined in soil by different single extractions, while the distribution of Zn in the soil was assessed by sequential speciation. The utilization of applied Zn by the navy bean was greatest when the Zn treatments were Zn-EDTA, Zn-EDTA-HEDTA, Zn-HEDTA, and Zn-EDDHSA. Both total Zn in the plants and soluble Zn in the plant dry matter (extracted with 1 mM 2-morpholinoethanesulfonic acid) were positive and significantly correlated with the following: the amounts of Zn extracted with the three single extractions used to estimate soil available Zn and the amounts of Zn in the water soluble plus exchangeable and organically complexed fractions. The Zn-HEDTA, Zn-EDDHSA, Zn-EDTA-HEDTA, Zn-S,S-EDDS, and Zn-EDTA sources significantly increased the mobility of micronutrients through the soil with respect to the control and Zn-PHP source. The maximum Zn concentration obtained in the leachate fractions was 65 mg L-1 (13% of Zn applied) for the Zn-S,S-EDDS chelate applied at a rate of 10 mg Zn kg-1 soil. In the course of the crop, the soil pH + pe parameter increased significantly with experimental time.