Micronutrients Availability in Soil–Plant System in Response to Long-Term Integrated Nutrient Management Under Rice–Wheat Cropping System

Abstract

In this study, we investigated the effect of long-term integrated nutrient management (INM) involving chemical fertilizers and organic amendments viz. farmyard manure (FYM), green manure (GM), and paddy straw (PS) on the availability of micronutrients in soil, their uptake by plants, and crop yield for rice-wheat system. Soil availability of micronutrients and their plant tissue concentrations was estimated in grain and straw of both the crops. Soil recovery coefficient (SRC) and transfer coefficient (TC) were calculated to find out micronutrients availability in relation to their plant uptake and transfer of micronutrients from shoot to grain, respectively. Results revealed that integration of FYM proved significantly superior to GM and PS in improving organic carbon, micronutrients availability, and shoot to grain transfer (TC) of Fe (both the crops) and Mn (wheat). Low SRC values of Zn, Cu, Fe, and Mn indicated that long-term INM can meet their plant nutritional requirement in rice-wheat system. However, higher SRC values for B (0.49) in 100% NPK treatment as well as in the integrated ones (0.22-0.27 for rice, 0.23-0.28 for wheat) suggest that quantity of this element in soil was too low to meet plants nutritional needs which was also confirmed by its very low content in the soil (below critical levels, i.e., 0.5 mg kg −1). This study concludes that long-term integration of FYM (with NPK fertilizers) has an edge over GM and PS in regulating the supply of micronutrients in soil-plant system and correcting the micronutrient deficiencies (except B) in rice-wheat cropping system.

Influence of Blast on the Nutrition and Yield of Irrigated Rice in Southern Brazil

“…Irrigated rice has a high nitrogen (N) demand (Carlos et al 2016;Saha et al 2019;Zhang et al 2019), and this has a great influence on plant-host relationship (Walters and Bingham 2007), mainly for the Magnaporthe oryzae x rice pathosystem, in which the phenomenon known as Ninduced susceptibility (NIS) occurs. Briefly, this N-induced susceptibility is characterized by the increase of leaf lesions and the alteration of types of lesions caused by the rice blast due to the increase in the amount of N (Otani 1959;Mukherjee et al 2005;Talukder et al 2005;Ballini et al 2013;Huang et al 2017).…”

Influence of yellow gypsum on nutrient uptake and yield of groundnut in different acid soils of Southern India

“…The PAN recovery coefficient expresses the relation between plant nutrient uptake and quantity of nutrient available in the soil (0–15 cm layer) 27 , 28 . Numerical values of micronutrients and silicon provides information on how many times micronutrients and silicon were smaller or greater than their quantity in soil.…”

Block Wise Spatial Distribution and Mapping of Cationic Micronutrients in Soils of Jhargram District of West Bengal

“…The reason behind this may be the higher availability of Zn at lower pH in soil. Soils high in organic matter promote biological and chemical reactions that result in the dissolution of relatively unavailable Zn in soil [31].…”