Effect of seaweed extracts on the growth, yield and nutrient uptake of black gram (Vigna mungo L.) in the red and lateritic belt of West Bengal

Abstract

A field experiment was conducted at the Agricultural farm of Visva-Bharati University, Birbhum, West Bengal during Pre-kharif (Summar) season of 2012, to study the effect of foliar spray of seaweed extracts (prepared from Kappaphycus alvarezii & Gracilaria crassa) on the growth and productivity of black gram. The foliar spray was applied thrice at different concentrations (0, 5.0, 7.5, 10.0 and 15.0% v/v) of seaweed extracts. Foliar applications of seaweed extracts significantly enhanced the growth and yield attributes. The highest grain yield was recorded with applications of 15% Kappaphykus + recommended dose of fertilizer which at par wth 15% Gracilaria extracts + RDF resulting in an enhanced by 51 and 44% grain yield, respectively compared to the water applied plots. The highest straw yield was also achieved with the application of 15% seaweed extracts. The nutrient uptake (N, P and K) which influenced due to the application was also with seaweed extract.

Effect of seaweed extract on rice (Oryza sativa var. ADT53) productivity and soil fertility in Cauvery delta zone of Tamil Nadu, India

“…The amount of available Sulphur was higher in T 2 (18.2 mg/kg) followed by T 1 (17.3 mg/kg) which was on par with T 3 (15.9 mg/kg) and the treatment T 12 (10.1 mg/kg) recorded a lower amount of available Sulphur (Table 7). Similar findings by Ghosh et al (2020) reported for blackgram in sandy loam soil of the red and lateritic belt of West Bengal with the application of seaweed @ 15% Kappaphycus + RDF, resulting in higher availability and absorption of inorganic elements such as Ca, Na, K, Mg, N, Cu, Zn etc. The treatment T 2 (soil application of SWE @ 25kg/ha) recorded higher amount of available zinc (1.17ppm) followed by T 1 (1.08 ppm) which was on par with T 3 (1.04 ppm) and less amount of available zinc (0.32 ppm) was reported in T 12 .…”

Effect of Seaweed Extracts on Ornamental Plants: Article Review

“…72 The existence of not only plant growth regulators such as cytokines, gibberellins but also trace minerals, vitamin supplements, essential amino acids in aquatic vegetation has strengthened yield potential as well as quality, likely having a positive impact on either dramatically lessened fall of blossoms and buds or steadily enlarged dimension of florals. 73 From a previous scientific study, it could be ascertained which sunflower conformed very well with the commercial seaweed bio-stimulant with steadily accelerated annual flower production. 35 The existence of higher potassium levels than other macronutrients in Sargassum and other growth regulators can stimulate flower initiation and thus increase the number of flowers per plant.…”

Biostimulant Properties of Marine Bioactive Extracts in Plants: Incrimination toward Sustainable Crop Production in Rice

“…Elevation in uptake of K, Ca, Mg, and Cu with application of seaweed extract of Kappaphycus alvarizii was due to enhanced membrane permeability of roots, leaves and stoma cells, and hormone-like activities of seaweed extract through their implication in cell respiration, photosynthesis, and enzymatic reactions [27]. Application of seaweed at the rate of 15 percent Kappaphycus alvarezii in black gram in sandy loam soil of the red and lateritic belt of West Bengal resulted in higher availability and absorption of inorganic elements like Ca, Na, K, Mg, N, Zn, and Cu [52].…”