Nutrient Use Efficiency as a Strong Indicator of Nutritional Security and Builders of Soil Nutrient Status through Integrated Nutrient Management Technology in a Rice-Wheat System in Northwestern India

Abstract

Nutrient use efficiency is reported as a strong indicator of the buildup soil nutrient status for nutritional security of crops through an integrated nutrient management approach under a rice-wheat system. The data revealed that integrated application of manures and fertilizers reported maximum organic carbon (0.39%) in the treatment receiving 100% of the recommended dose of fertilizers (RDF) + farmyard manure and lowering the pH to 6.39. The maximum available N (360.8 kg ha−1) was found in 100% RDF + press mud treatment; available P (66.30 kg ha−1) was found in 75% RDF + poultry manure; and available K, Zn, Cu, and Fe (226.3 kg ha−1 and 2.220, 0.732, and 36.87 mg kg−1, respectively) in 100% RDF + farmyard manure treatments. Similarly, total macro- and micronutrient content in soil increased with the addition of organic manures alone or in combination with chemical fertilizers. The highest agronomic efficiency and utilization efficiency of nitrogen (41.83 and 102.55 kg kg−1, respectively) and phosphorous (83.57 and 204.9 kg kg−1, respectively) were recorded in the treatment receiving 75% RDF + poultry manure. This study concluded that the integrated application of manures and chemical fertilizers is a must for improving soil nutrient status and nutrient use efficiency and ultimately enhances nutritional security under a rice-wheat system.

Interactive Effects of Foliar Application of Zinc, Iron and Nitrogen on Productivity and Nutritional Quality of Indian Mustard (Brassica juncea L.)

“…However, the increase in yields with the foliar application of micronutrients (Zn and Fe) and urea may be due to the fact that the exogenous supply of nitrogen fertilizer resulted in increased photosynthetic rate, synthesis of metabolites, assimilates and its translocation to grains thereby enhancing the growth, performance and value of oilseed crops. These results are in accordance with the research of some workers [23,26]. Further, the results also indicated that the combined application of micronutrients (Zn and Fe) with nitrogen followed by foliar sprays of micronutrients at 2 stages produced the highest grain and stover yield.…”

“…In oilseed crops, the highest seed yield with an increased rate of micronutrients and Fe) and urea fertilization might be ascribed to an increased number of fertile p resulting in higher seed production and yield [23]. Zinc and iron application increa Effect of urea and micronutrient foliar spray on grain and stover yield (q ha −1 ) of Indian mustard.…”

“…In oilseed crops, the highest seed yield with an increased rate of micronutrients (Zn and Fe) and urea fertilization might be ascribed to an increased number of fertile pods resulting in higher seed production and yield [23]. Zinc and iron application increased root cell membrane integrity, plant enzyme systems, protein synthesis, auxins which increase photosynthetic assimilates and seed setting and finally increased grain yield [6].…”

Assessment of Agroeconomic Indicators of Sesamum indicum L. as Influenced by Application of Boron at Different Levels and Plant Growth Stages

“…The data were analyzed statistically using the SAS statistical program using one way ANOVA. Duncan's multiple range test was used for significance comparisons of means at a 0.05 level of probability when the F values were significant in a randomized block design [36].…”

Computational Studies and Fluorescent Turn‐off Sensing of Biologically Important Cu2+ Ion in Irrigation Water by Schiff Base

“…It can also be seen that in irrigation water, percentage recovery was more than spiking amount as copper is already present in soil as micronutrient, which has been discussed in our recent manuscript. [43,44]…”