Fertilizer Applications for Correcting Micronutrient Deficiencies

Martens, D. C.; Westermann, D. T.

doi:10.2136/sssabookser4.2ed.c15

Cited by 110 publications

(58 citation statements)

References 153 publications

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“…Foliar Zn fertilizer was applied twice to vegetative tissues and during grain filling stage to provide a large pool of Zn for increased nutrient uptake and grain Zn concentration (Cakmak et al., 2010b). Assuming residual soil Zn fertility benefits which could last for up to four years (Cakmak, 2008; Martens & Westermann, 1991), basal soil Zn was not reapplied to plots in the second season. Foliar Zn fertilizer application was repeated during the second cropping season as foliar fertilizers do not leave substantial residual effects (Cakmak, 2008).…”

Section: Methodsmentioning

confidence: 99%

Nitrogen effect on zinc biofortification of maize and cowpea in Zimbabwean smallholder farms

et al. 2020

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Agronomic biofortification of crops with zinc (Zn) can be enhanced under increased nitrogen (N) supply. Here, the effects of N fertilizer on grain Zn concentration of maize (Zea mays L.) and cowpea (Vigna unguiculata L.) were determined at two contrasting sites in Zimbabwe over two seasons. All treatments received soil and foliar zinc-sulphate fertilizer. Seven N treatments, with three N rates (0, 45, and 90 kg ha −1 for maize; 0, 15, and 30 kg ha −1 for cowpea), two N forms (mineral and organic), and combinations thereof were used for each crop in a randomized complete block design (n = 4). Maize grain Zn concentrations increased from 27.2 to 39.3 mg kg −1 across sites. At 45 kg N ha −1 , mineral N fertilizer increased maize grain Zn concentration more than organic N from cattle manure or a combination of mineral and organic N fertilizers. At 90 kg N ha −1 , the three N fertilizer application strategies had similar effects on maize grain Zn concentration. Co-application of N and Zn fertilizer was more effective at increasing Zn concentration in maize grain than Zn fertilizer alone. Increases in cowpea grain Zn concentration were less consistent, although grain Zn concentration increased from 39.8 to 52.7 mg kg −1 under optimal co-applications of N and Zn. Future cost/benefit analyses of agronomic biofortification need to include information on benefits of agro-fortified grain, complex farmer management decisions (including cost and access to both N and Zn fertilizers), as well as understanding of the spatial and site-specific variation in fertilizer responses.Abbreviations: CRM, certified reference material; NR, natural regions; SSA, sub-Saharan Africa.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Section: Methodsmentioning

confidence: 99%

Nitrogen effect on zinc biofortification of maize and cowpea in Zimbabwean smallholder farms

et al. 2020

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“…Foliar fertilization of boron (B) promotes cell wall structure and prevents ''hollow heart'' of peanut (H¨ansch and Mendel, 2009). Martens and Westermann (1991) reported soil B to be deficient in 43 states of the U.S., and B is commonly deficient in sandy soils where peanut is grown. Nutrient deficiency in general is often due to soil factors such as low-organic matter, soil pH, soil texture and excessive rainfall leading to nutrient leaching.…”

Section: Introductionmentioning

confidence: 99%

Foliar Fertilization as a Strategy to Increase the Proportion of Mature Pods in Peanut (Arachis hypogaea L.)

et al. 2019

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Foliar application of nutrients is used by growers to remediate crop nutrient deficiencies, but anecdotal reports indicate there may be associated effects of accelerated crop maturity, particularly for irrigated peanut ( Arachis hypogaea L.). Research was conducted to determine whether application of foliar fertilizers during early pod set could increase the proportion of early-maturing pods, and thereby increase the mature proportion of the profile under irrigated conditions. Field experiments were conducted in Florida at Citra in 2016, Jay in 2016 and 2017with a randomized complete block with four foliar fertilizer treatments, applied to GA-06G at R1 and again two wks later at R2. Treatments consisted of no foliar fertilizer (control), 10.0 kg N/ha, 1.0 kg P2O5/ha, and 0.34 kg B/ha at each application and two harvest timings. Harvest treatments were based on the adjusted growing degree d model for peanut and were timed to represent early and optimal crop maturity. Leaf tissue nutrient concentrations were determined from samples collected 24h after each foliar treatment application. Yield and proportion of mature pods were quantified after each digging date. Normalized difference vegetation index data showed no treatment differences. The maturity profile (percentage of mature pods present in the sample) was not consistently different from respective controls during either harvest period. Results indicate foliar fertilizer applied during flowering had little effect on maturity acceleration in peanut, though foliar fertilization may still be effective at alleviating in-season nutrient deficiencies. Within site-year, application of foliar fertilizer did not increase yield. Under sound soil fertility management programs, foliar fertilizers did not increase yield or the maturity profile of peanut.

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“…Maize has been previously considered to have a relatively low boron (B) requirement as compared to other cereals (Martens and Westermann, 1991). However, based on field responses to B application, its deficiency has been reported in maize across five continents (Bell and Dell, 2008;Shorrocks, 1997;Shorrocks and Blaza, 1973).…”

Section: Introductionmentioning

confidence: 99%

Response of hybrid maize to boron application

Rahman

Islam²,

Ishtiaque³

et al. 2018

Bangladesh J. Agric. Res

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An experiment was carried out at farmer's field of Kushtia district under High Ganges River Floodplain Soil (AEZ-11) during Rabi seasons of 2013-14, 2014-15 and 2015-16. The objectives of the study were to evaluate the effect of boron on the yield of hybrid maize (cv. BARI Hybrid Bhutta-9) and to find out the optimum dose of boron for higher yield and economic return. There were 6 treatments comprising 6 levels (0, 0.5, 1.0, 1.5, 2.0 and 2.5 kg B ha -1 ) of boron along with a blanket dose of N256 P65 K45 S27 Zn3 kg ha -1 and cowdung 5 tha -1 . Boron fertility of the initial soil was in medium level (0.33 µg g -1 ). The experiment was conducted in RCB design with three compact replications. Results of three years study revealed that hybrid maize responded significantly to added boron for the first two years but for the third year the effect was statistically non significant. The highest grain yield was obtained with 2.5 kg B ha-1, which was marginally significant with boron control but statistically identical to rest of the boron levels. Although, the yield increased linearly up to 2.5 kg ha -1 but the effect was relatively better fitted with quadratic response function (R 2 = 0.943). The mean highest grain yield found to be 8.55 t ha -1 for 2.5 kg B ha -1 against 8.20 t ha -1 from 0.5 kg B ha -1 and 7.84 t ha -1 from boron control. Considering the boron fertilty of soil, response of maize to boron and economic return, the optimum dose of boron may be 0.5 kg ha -1 for the cultivation of hybrid maize for medium level boron fertile soil under AEZ-11 of Kushtia district or alike.

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Fertilizer Applications for Correcting Micronutrient Deficiencies

Cited by 110 publications

References 153 publications

Nitrogen effect on zinc biofortification of maize and cowpea in Zimbabwean smallholder farms

Nitrogen effect on zinc biofortification of maize and cowpea in Zimbabwean smallholder farms

Foliar Fertilization as a Strategy to Increase the Proportion of Mature Pods in Peanut (Arachis hypogaea L.)

Response of hybrid maize to boron application

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