28 research outputs found
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