Micronutrient Constraints to Crop Production in the Middle East–West Asia Region

Ryan, John; Rashid, Abdul; Torrent, J.; Yau, S. K.; Ibrikçi, H.; Sommer, Rolf; Erenoglu, Emin Bulent

doi:10.1016/b978-0-12-417187-9.00001-2

Cited by 69 publications

(50 citation statements)

References 171 publications

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“…Cereals also remained unmatched in terms of benefit-cost ratio (BCR) (2.21), while legumes with BCR of 1.74 followed cereal crops, which in turn were followed by non-conventional crops. Foliar applied Cu, Fe and Zn resulted in higher economic returns, particularly on soils which were calcareous and alkaline with abundance of carbonates and bicarbonates, ionic imbalances and pollution (Ryan et al, 2013). Higher biomass production resulted in a significant increase in economic returns, and higher quality forage also fetched better market price for better feeding value (Iqbal et al, 2015a, b).…”

Section: Foliar Applied Nano-iron (Fe) Chelates and Chemical Iron Chementioning

confidence: 99%

A Meta-Analysis of the Impact of Foliar Feeding of Micronutrients on Productivity and Revenue Generation of Forage Crops

Iqbal¹,

Abdul²,

Muzammil³

et al. 2019

Planta daninha

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Planta Daninha 2019; v37:e019189237 IQBAL, M.A. et al. A meta-analysis of the impact of foliar feeding of micronutrients on productivity and revenue generation ... ABSTRACT -Food security assurance to meet the demands of increased population growth requires a proportional increase in milk and meat production which, in turn, depends on animal nutrition. Assessing foliar application of micronutrients for production of substantive quantities of good quality forage must be a goal of modern, profit-oriented, sustainable agriculture and plants with better competitive ability as compared to weeds. This meta-analysis made a quantitative and qualitative analysis of the impact of foliar feeding of micronutrients (iron, zinc, copper, sulfur and boron) on forage crops under varying pedo-climatic conditions. Weighted and unweighted meta-analyses were performed on 139 studies to evaluate 19 independent variables (9 qualitative, 5 qualitative, 5 economic) in comparison to no spray of micronutrients. Foliar feeding through application of one, two or more micronutrients with single or multiple sprays positively influenced agronomic and physiological traits, which led to significantly higher green forage (7-19%) and dry matter biomass. Nutritional quality, particularly crude protein (1.9-11.0%) and digestibility (8-17%), was improved by foliar spraying of micronutrients. Economic outputs were also increased as additional benefits rendered by foliar applied micronutrients surpassed their expenditures. For this data set, it is concluded that foliar feeding of micronutrients has the potential to boost forage yield, nutritional quality and revenue of cereals, legumes and non-conventional forage crops (quinoa and medick) depending on soil fertility status, concentration of applied micronutrients, number of foliar sprays, crop growth stage for foliar feeding and specific agro-environmental conditions.

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Section: Foliar Applied Nano-iron (Fe) Chelates and Chemical Iron Chementioning

confidence: 99%

A Meta-Analysis of the Impact of Foliar Feeding of Micronutrients on Productivity and Revenue Generation of Forage Crops

Iqbal¹,

Abdul²,

Muzammil³

et al. 2019

Planta daninha

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“…Manganese (Mn) is an essential mineral element for plants. Deficiency of Mn is a serious problem for crop productivity in major parts of the world and is particularly widespread in Australia, the United States, Asia, and northern Europe, including Scandinavia Yang et al, 2007;Ryan et al, 2013). It is not possible to prevent Mn deficiency in alkaline soils by application of soluble Mn fertilizers because the added Mn is instantaneously converted to MnO 2 which is unavailable to plants.…”

Section: Introductionmentioning

confidence: 99%

The iron‐regulated transporter 1 plays an essential role in uptake, translocation and grain‐loading of manganese, but not iron, in barley

et al. 2017

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Transporters involved in manganese (Mn) uptake and intracellular Mn homeostasis in Arabidopsis and rice are well characterized, while much less is known for barley, which is particularly prone to Mn deficiency. In this study we have investigated the role of the iron-regulated transporter 1 (IRT1) for Mn uptake and translocation in barley plants. We employed an RNAi approach to reduce HvIRT1 expression to 5% of the wild-type level. This enabled characterization of the functional role of HvIRT1 by use of advanced imaging and phenotyping techniques applied to plants growing in hydroponics or soils with different Mn availability. Our results highlight the importance of HvIRT1 for the transport of Mn across the root endodermis into the stele. In the hvirt1-RNAi lines, a chlorotic phenotype with reduced shoot Mn concentration and impaired photosynthetic functionality was observed, especially under conditions with low Mn availability. We also document that HvIRT1 controlled the Mn distribution within the barley grain. Surprisingly, unlike other IRT1 orthologues, HvIRT1 played no significant role in iron uptake. We conclude that the barley IRT1 orthologue has a novel function with respect to ensuring sufficient shoot Mn concentrations. The preference of IRT1 for Mn instead of Fe is discussed in an evolutionary context.

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“…The major factors contributing to low bioavailability of Zn might be parent material, low Zn content in soil, high pH, low organic matter, highly weathered, soil erosion, and coarse textured soils (Singh et al 2005;Ryan et al 2013). Organic manures are the potential source of micro-macro nutrients, increase microbial activities, modify the soil physical behaviour, and influence the availability of applied nutrients (Pandey et al 2007).…”

Section: Discussionmentioning

confidence: 99%

Nutrient transport characteristics of livestock manure in a farmland

Lee¹,

Oa²

2013

Int J Recycling Org Waste Agric

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Purpose In a novel approach, certain organic wastes byproducts of agro industries were assessed for their ability to support maize growth and Zn bioavailability in maize grain. Methods In a field experiment, maize (Zea mays) was supplemented with farm yard manure (FYM), press mud (PM), fisheries manure (FM), and slaughter house waste (SHW) in combination with Zn soil application (ZnS) and Zn foliar spray (ZnF) with recommended doses of N:P:K (140:100:60 kg ha −1 ), respectively. Besides assessing the maize growth, grain, and straw yield, Zn bioavailability in maize grain was also studied. Results Organic materials combined with ZnS and ZnF significantly increased the maize yield and Zn bioavailability. PM + ZnS increased the grain yield by 69.71%, while FM + ZnF and FYM + ZnF increased the grain Zn concentration by 86.37 and 86.16%, respectively. Moreover, grain Zn content was greatly influenced by PM + ZnS and PM + ZnF resulted an average increase by 160%. Phytate concentration and phytae:Zn molar ratio in grain were decreased by 30.34 and 66.92%, respectively by FYM + ZnF. Estimated Zn bioavailability ranged from 0.92 to 2.04 mg Zn/300 g in maize grain, and was maximum by PM and FYM combined with ZnF. Conclusion Organic manures influence the nutrient uptake from soil, increase the product quality, and act as a good organic fertilizer. The current study revealed that organic manures can enhance crop growth and Zn uptake in grain in sustainable manner. It would be an eco-friendly approach by utilizing organic wastes annually generated by agro industries.

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Micronutrient Constraints to Crop Production in the Middle East–West Asia Region

Cited by 69 publications

References 171 publications

A Meta-Analysis of the Impact of Foliar Feeding of Micronutrients on Productivity and Revenue Generation of Forage Crops

A Meta-Analysis of the Impact of Foliar Feeding of Micronutrients on Productivity and Revenue Generation of Forage Crops

The iron‐regulated transporter 1 plays an essential role in uptake, translocation and grain‐loading of manganese, but not iron, in barley

Nutrient transport characteristics of livestock manure in a farmland

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