Effect of Kappaphycus alvarezii (Doty) Doty ex silva. extract on grain quality, yield and some yield components of wheat (Triticum aestivum L.)

Abstract A pot experiment was conducted in rabi season 2004-05 to study the effect of Kappaphycus alvarezii extract applied as a foliar spray at 0.25%, 0.50% and 1.0% on wheat. Compared to control the yield of grain increased by 80.44% when, the plants were sprayed with 1.0% K. alvarezii extract. The nutritional quality of grain such as carbohydrate, protein and minerals also improved under the influence of treatment

Seaweeds As A Biofertilizer

378-382Seaweeds are large plants growing in the sea, especially various marine algae like the rockweeds, kelps, sea lettuce and dulses. Dried or fresh seaweeds and liquid extracts have been increasingly employed by horticulturists, gardeners, farmers, and orchadists as a fertilizer. Seaweed extracts are now commercially available as maxicrop, seasol, SM3, kelpak , and cytokin. The effect of seaweed extract is due to the microelements and plant growth regulators such as cytokinin present in it. Seaweed extract is used as a foliar spray, application to soil and for soaking of seeds before sowing. It enhances the germination of seeds, increases uptake of plant nutrients, and gives resistance to frost and fungal diseases. Seaweed extract is effective for ripening of fruits, increasing shelf-life of the produce, improves the quality of produce, and serves as an excellent soil conditioner

Effect of Pulsed Concentrated Solar Radiation on Seeds and Plants

11-13Role of sunlight for plant growth through photosynthesis is well known. The systematic use of concentrated sunlight is being made in medicine, biology and chemistry since last three decades. To avoid the burning effect of concentrated sunlight, Pulsed Concentrated Solar Radiation (PCSR) was developed, in which seeds of biological objects are exposed intermittently. The PCSR increased the germination, plant growth, development and productivity in many crops with early maturity by 3 to 6 d. The treatment accelerates the metabolism, which leads to active growth of embryo. This treatment has been reported to increase the content of nucleic acids, sugars, vitamins, quality of produce and even acts as a promising mutagenic factor

Effect of seaweed saps derived from two marine algae Kappaphycus and Gracilaria on growth and yield improvement of blackgram

789-794A field experiment was conducted during the pre-kharif season at Muratipur village, Nadia, West Bengal (Latitude: 22°57′ N, Longitude: 88°20′ E) in two consecutive year of 2012 and 2013 to study the effects of seaweed saps on growth and yield improvement of blackgram in new alluvial soil of West Bengal. Foliar spray was applied twice at different concentrations (0, 2.5, 5.0, 7.5, 10.0 and 15.0% v/v) of seaweed extracts (namely Kappaphycus and Gracilaria) with recommended dose of fertilizer (RDF). Foliar applications of seaweed extract significantly enhanced the growth and yield parameters. Highest grain yield was recorded with the combined applications of 15% Kappaphykus sap and RDF, followed by the combined application of 15% Gracilaria sap and RDF extract resulting in an increase by 51.06% and 47.15% seed yield respectively compared to the control. Maximum stover yield was also achieved with the application of 15% Kappaphykus sap

Foliar nutrient management through <i style="mso-bidi-font-style:normal">Kappaphycus</i> and <i style="mso-bidi-font-style:normal">Gracilaria</i> saps in rice-potato-green gram crop sequence

613-617A field experiment was conducted during 2010-11 and 2011-12 on sandy loam soil at Uttar Chandamari village of Nadia district of West Bengal (22° 57' N latitude, 88° 20' E longitude) to study the effects of seaweed saps on crop growth and yield vis-à-vis nutrient uptake by the crops under rice-potato-greengram sequence. The foliar application of seaweed extracts (namely Kappaphycus and Gracilaria) at different concentrations (0, 2.5, 5.0, 7.5, 10.0 and 15.0% v/v) significantly enhanced the growth, yield and nutrient uptake by the crops in sequence. The application of 15% Kappaphycus sap along with recommended dose of fertilizer (RDF) recorded the highest productivity in terms of rice equivalent yield (REY) with net monetary returns of Rs. 175608.60 ha-1 yr-1 and benefit: cost ratio of 2.06

Effect of nitrogen sources on the growth and bioaccumualtion of nitrogen in <span style="font-size:14.0pt;line-height:115%;font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";color:black;mso-ansi-language:EN-IN; mso-fareast-language:EN-IN;mso-bidi-language:HI" lang="EN-IN">marine red alga <i>Kappaphycus striatum </i>(Rhodophyta, Solieriaceae) in culture</span>

55-59Kappaphycus striatum (Schmitz) Doty (=Eucheuma striatum Schmitz) was cultured in the laboratory. The natural seawater -was supplimented with 1, 3, 5, 7 and 9 mg N l-1 from NaNO3, NH4NO3, (NH4)2SO4 and urea separately. In these cultures 0.25 mg P l-1 as superphosphate and mironutrients were added except in control. Effects of different concentrations of nitrogen from different sources after 60 days showed significant increase in wet weight (at 1 % level) in cultures supplied with 1 to 3 mg N l-1 from (NH4)2SO4  and 3 to 5 mg N l-1 from NH4NO3. However, (NH4)2SO4 was more effective than NH4NO3. Maximum wet weight was obtained in 1 mg N l-1 from (NH4)2SO4 Percentage dry weight of the alga was maximum at 1 mg N l-1 supplied from each of the nitrogen sources separately. Urea was found effective at higher concentrations 5 to 9 mg N l-1. The bioaccumulation of total nitrogen content of K. striatum increased with increasing concentration of each of the nitrogen sources in the culture media. It was higher in the plants supplied with NH4NO3or (NH4)2SO4 than those supplied with NaNO3 or in control. Bioaccumulation of nitrogen in K. striatum in different treatments ranged from 0.57% to 4.99%. However, in cultures supplied with (NH4)2SO4, the critical concentration of nitrogen varied from 1.91 % to 2.53%, observed at 1 to 3 mg N l-1 respectively. In the cultures supplied with (NH4)2SO4, maximum growth and uptake of PO4-P and NH4-N was observed.</span

Effect of liquid seaweed fertilizer on yield and quality of okra (Abelmoschus esculentus L.)

1115-1117A field experiment was conducted in summer of 2006 to study the effect of liquid seaweed fertilizer (LSF) applied as a foliar spray (conc. 2.5%, 5.0%, 7.5% and 10.0%) on okra (Abelmoschus esculentus L.). Control plants were sprayed with water. Yield and nutrition quality of okra fruit got significantly increased (20.47%) at LSF spray (2.5%)

Enhanced yield and nutritional quality in green gram (<i>Phaseolus radiata </i>L) treated with seaweed (<i>Kappaphycus alvarezii</i>) extract

468-471This study presents foliar application effect of Kappaphycus alvarezii (5-15%) extract on yield and seed quality of greengram at flowering stage. Application of K. alvarezii (conc. 10.0%) significantly increased seed yield (30.11%) compared to control,due to increase in yield of pods, weight of pods as well as seed yield per plant and 100 seed weight. This treatment also improvednutritional quality of seed as follows: protein, 19.43; carbohydrate, 5.17; P, 3.61; and Mo, 52.63%

Foliar application of seaweed sap as biostimulant for enhancement of yieldand quality of tomato (<i>Lycopersicon esculentum</i> Mill.)

215-219Effect of Kappaphycus alvarezii sap (seaweed) on growth and yield of tomato was studied in field during kharif season of 2006-07. K. alvarezii sap, applied as a foliar spray (5.0%), increased yield of tomato fruit (60.89%) as compared to control plants sprayed with water, attributed to increase in number of fruits per plant and size of fruit. With application of sap, fruit quality and also macro (13.24-67.50%) and micro (23.84-42.61%) elements content increased over control. Nutrient uptake by fruit and shoot was improved with foliar application of K. alvarezii sap. Plants receiving foliar applications showed resistance to leaf curl, bacterial wilt and fruit borer