Foliar Micro-nutrition of Vegetable Crops - A Critical Review

Mangroliya

2022

JEAI

Vegetables are potential source of vitamins, minerals and dietary fibers. Proper plant nutrition is essential for successful production of vegetable crops. Integrated supply of micronutrients with macronutrients in adequate amount is an important approach to sustain the soil health and crop productivity besides maintaining the nutritional quality of vegetables. Micronutrients (Fe, Zn, B, Cu, Mn, Cl, Mo, Ni) are required by plants in small or trace quantities. They are essentially as important as macronutrients for better growth, yield and quality of plants. Deficiencies of micronutrients may induce several physiological disorders in plants and drastically affect growth, metabolism and reproductive phase in plants. The successful tasks carried out by various micronutrients include plant metabolism, nutritional management, chlorophyll production, reproductive growth, flower retention, fruit and seed development, etc. Judicious use of micronutrients is essential for vegetable cultivation to get maximum yield of high quality produce. Foliar nutrition is the one of the most efficient method of applying micronutrients. Spraying of nutrient solutions on the foliage of growing plants is known as foliar nutrition. Foliar nutrition of micronutrients at right concentration and at right growth stage is important for better results. Micronutrients applied by foliar application are more effective than those applied through soil application because soil application requires longer time for micronutrient absorption and assimilation. Foliar application of micronutrients plays a dynamic role and has been found beneficial for improving growth, yield and quality attributes of vegetable crops. In general, this review shows an immense potential of foliar nutrition of micronutrients in vegetable production. The main aim of this study is to know and explore the benefits of micronutrients through foliar nutrition for improving the production potential of different vegetable crops.

Section: Factors Affecting the Efficiency Of Foliar Nutritionmentioning

confidence: 99%

Role of Micronutrients Foliar Nutrition in Vegetable Production: A Review

Mangroliya

2022

JEAI

“…Micronutrients are elements that are required for plant growth in minute concentrations. Despite being required in fewer quantities, micronutrients have the same functional importance as macronutrients and play critical roles in plant growth [1]. These elements include, Zinc (Zn), Iron (Fe), Copper (Cu), and Manganese (Mn) amongst others.…”

Section: Introductionmentioning

confidence: 99%

“…Micronutrients in soil exist in various forms, including water-soluble, exchangeable, complex and chelated forms, as well as in the structure of primary and secondary minerals [4]. Numerous studies have demonstrated that the availability of micronutrients in the rhizosphere relies on soil pH, organic matter, clay content, and other physical, chemical, and biological factors [1]. According to [5], Fe and Mn are prevalent in silicate minerals including biotite and hornblende.…”

Section: Introductionmentioning

confidence: 99%

Profile Distribution of Available Plant Nutrients in Western Hilly Tracts of Cuttack District, Odisha

Mohanty

Nayak

Jena

et al. 2022

IJPSS

Aims: An investigation was conducted to examine the distribution of available plant nutrients and the relationships between soil properties and available nutrient status in soil profiles in the Western Hilly Tracts of the Cuttack District, Odisha. Place and Duration of Study: The research area, i.e. the Narasinghpur block, is located in the western part of the Cuttack district in Odisha and is characterized by lateritic uplands and mountainous terrain. Three soil profiles were exposed i.e. upland, medium land and low land before the rainy season (February, 2020). Methodology: For experiments, five layers demarcated at 20cm intervals up to a depth of 100cm were sampled, processed, and stored. Several parameters, including particle size, pH, EC, OC, and available Ca, Mg, S, Fe, Mn, Cu, and Zn were analysed and interpreted using standard protocols. Results: Sand content decreased with pedon depth, whereas clay content showed the opposite trend. With increasing soil depth in all pedons, soil pH increased while EC and soil organic carbon content declined. The available Ca, Mg, and S in surface soils varied from 4.11 to 6.56 [cmol (p+)/kg], 2.15 to 3.54 [cmol (p+)/kg] and 9.85 to 12.06 mg kg-1, respectively. The corresponding subsurface ranges for these nutrients were 4.31 to 8.52 [cmol (p+)/kg], 2.41 to 4.52 [cmol (p+)/kg], and 6.95 to 11.41 mg kg-1, respectively. The available Fe, Mn, Cu, Zn, and B range in surface soils were 127.85-278.81, 68.48-144.98, 0.64-0.9, 0.54-0.63 and 0.37-0.47 mg kg-1, respectively. The subsurface ranges for these nutrients were 102.32–234.46, 53.21–118.28, 0.28–0.89, 0.17–0.50, and 0.29–0.91 mg kg-1. The status of micronutrients in the present study region was as follows: Fe > Mn > Cu > Zn > B. With increasing soil depth, available Ca and Mg increased, but available S, Fe, Mn, Cu, Zn and B declined. Positive correlations between available Fe, Mn, Cu, and Zn with the soil organic carbon content of the soil and negative correlations with the soil pH were observed. Conclusion: Plant nutrients in the research area varied with topography, although the differences between upland, medium land and lowland wasn't substantial. However, accelerated decomposition of soil organic matter and agricultural residues likely led to highermicronutrient concentrations at the soil's surface than subsurface.

“…En este sentido, se ha documentado que niveles altos y excesivos de Ca en el suelo pueden disminuir la absorción de micronutrientes por las plantas, limitando significativamente la producción de los cultivos (Prasad et al, 2016;Abou et al, 2021). Por lo anterior, la nutrición foliar puede complementar a la fertilización edáfica, especialmente con micronutrientes, que por lo general su absorción a través de las raíces es limitada por varios factores limitantes del suelo, más aún en sistemas de secano, donde la baja humedad del suelo limita la absorción eficiente de nutrientes (Subhani et al, 2012;Shiferaw, 2017;Niu et al, 2020;Zahed et al, 2021). En relación con lo descrito, estudios realizados por Potarzyck & Grzebisz (2009) y Liu et al (2020) concluyeron que aplicaciones foliares de Zn incrementaron hasta en 18% y 17% el rendimiento de grano del maíz en Polonia y China, respectivamente.…”

Section: Introductionunclassified

Yield, profitability and agronomic efficiency of nitrogen in rainfed maize with complementary foliar fertilization of Zn and Mo

Navarrete

Cedeño-García²,

García³

et al. 2022

Manglar

The research aimed to evaluate the effect of complementary foliar applications of Zn and Mo on the yield, profitability, and agronomic efficiency of nitrogen in rainfed maize. The work was carried out during the rainy seasons of 2020 and 2021 in the Carrizal river valley, Manabí, Ecuador. The treatments evaluated were: NPK soil fertilization supplemented with foliar application of Zn and Mo (T1) and NPK soil fertilization without foliar application of Zn and Mo (T2). Grain yield (RG), agronomic efficiency of N (EAN), and the net economic benefit of fertilization (BEN) were recorded. Data were analyzed with Student's t-test for paired observations. Treatment T1 increased the RG by 15.58% and 14.03% during 2020 and 2021, respectively, concerning treatment T2. Similarly, the T1 treatment increased the EAN by 28.30% and 24.60% in the 2020 and 2021 seasons, respectively, concerning the T2 treatment. Finally, treatment T1 produced the highest BEN, with an increase of 23.05% and 16.37%, during 2020 and 2021, respectively, about treatment T2. Complementary foliar fertilization with Zn and Mo enhanced the effect of NPK soil fertilization and increased yield, profitability, and EAN in rainfed maize.