Fertilizer Potential of Sea Weed (Kappaphycus and Gracilaria) Saps in Potato Crop

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
S. K. Singh ◽  
S. S. LAL ◽  
R. K. SINGH ◽  
S. T. ZODAPE

A field experiment was conducted during winter season of 2012-13 in sandy loam soil at Central Potato Research Station, Patna to study the effects of seaweed saps on growth, yield and nutrient uptake of Potato. The foliar spray was applied at 45, 60 and 75 days after planting at different concentrations (0, 2.5, 5.0, 7.5 and 10 % v/v) of seaweed extracts namely Kappaphycus( K Sap) and Gracilaria (G Sap). Foliar applications of seaweed sap significantly enhanced large and medium grade as well as total tuber yield. Increment in total tuber yield of potato with application of 7.5% K sap + recommended dose of fertilizer (RDF), 5% G sap + RDF, and 10% G sap + RDF) over control were in tune of 3.95 t ha-1 ,4.88 and 4.07 t ha-1 respectively. Applications of 7.5 % K sap+ RDFand 5% G sap + RDF resulted in increase by 15.8 and 34.9% in large grade tuber yield and 11.5% and 22.5% in medium grade tuber yield, respectively compared to control. Improved nutrient uptake (NPK) was also observed with seaweed extract.

Author(s):  
N. Senthilkumar ◽  
G. Gokul

Background: The availability of macro and micronutrients added to the soil are affected by soil environmental factors leading to various losses. When a similar amount of fertilizer is applied through foliar application, its use efficiency is increased many folds. In the sandy loam soil, foliar applied fertilizers are up to 20 times more effective as compared to soil applied fertilizers. Water soluble fertilizer of 19:19:19 grade N: P: K is totally water soluble and present in crystalline powder form. It can be applied to the crop by fertigation or through foliar spraying. Instant uptake of nutrients by the plants resulting in significant and quick improvement in crop growth. Humic acid when applied to field converted into readily available humic substances which directly or indirectly effect the plant growth. Foliar application of nutrients along with soil application of nutrients increase the yield and to improve the quality of cereal crops .Keeping the aforesaid facts in consideration, the present investigation was carried out to study effect of NPK water soluble fertilizer on growth, yield and yield attributes and nutrient uptake of ragi. Methods: The present investigation was carried out during January – May 2018 at farmers field, kamarajapuram village, Katpadi Taluk, Vellore district, Tamil Nadu, India. The experiments were laid out in RBD (Randomized Block Design), Ragi [Elusine coracana (L.) Gaertn], CO-14 variety were taken into study. The experimental soil was sandy loam, 10 treatments with replicated thrice. The soil and plant sample was collected periodically proceed with standard analytical and statistical method followed. Result: Our investigations the soil and foliar feeding of nutrients along with water soluble fertilizer and humic acid combined treatment T10 (Soil application of 50% RDN + foliar spray of 50% RDN and 100% P and K through water soluble fertilizer [on 20 and 40 DAT] + foliar spray of humic acid 0.1% [on 20 and 40 DAT]) was significantly superior in performance with respect to growth, yield attributes, quality and nutrient uptake by ragi. It can be recommended to farmers to achieve more benefit from finger millet.


2014 ◽  
Vol 12 (1) ◽  
pp. 127-138
Author(s):  
H Banerjee ◽  
A Konar ◽  
A Chakraborty ◽  
AM Puste

Field trials were conducted on sandy loam soil of Adisaptagram Block Seed Farm, Hooghly, West Bengal, India during three consecutive winter seasons of 2009-10, 2010-11 and 2012-13 to study the possibilities of calcium application in different proportions with primary nutrients in potato cultivation under irrigated conditions. The results indicated that all the biometrical parameters showed higher values when the potato crop received recommended dose of fertilizer (RDF) (200:66:124 kg N, P and K ha-1 respectively) plus 120 kg Ca ha-1 at planting which differed significantly from all other treatments tried in this investigation. Average yield of tuber was maximum (26.25 t ha-1) with RDF + 120 kg calcium application per ha at planting followed by RDF + 80 kg Ca (25.01 t ha-1). Higher dry matter content (15.14%) was obtained with RDF plus split application of Ca i.e. 40 kg at planting and remaining 40 kg at earthing up at par to 80 and 120 kg Ca at planting. On the other hand, yield of skin damaged tuber was higher (1.24 t ha-1) under the treatment having RDF + 40 kg calcium in two equal splits i.e. 20 kg at planting and 20 kg ha-1 at earthing up closely followed by RDF + 80 kg Ca ha-1, either single or split application (1.22 t ha-1). Therefore, combined application of RDF + Calcium (80-120 kg ha-1) has been proved to be the best option to get higher tuber yield of potato with good quality characteristics and higher monetary advantage. DOI: http://dx.doi.org/10.3329/sja.v12i1.21119 SAARC J. Agri., 12(1): 127-138 (2014)


2017 ◽  
Vol 4 (1) ◽  
Author(s):  
RAKESH KUMAR ◽  
SABHA JEET ◽  
J.P. SINGH

Field experiment was conducted during the two consecutive kharif season of 2009-10 and 2010-11 on sandy loam soil of Varanasi to assess the production potential and nutrient uptake of quality protein maize hybrid with the application of different levels of nitrogen and sulphur in dryland condition of Eastern Uttar Pradesh. The experiment was laid out in split-plot design and replicated thrice, in which main plot were allotted four nitrogen levels (0, 50, 100 and 150 kg N/ha) and two quality protein maize hybrid (Shaktiman 2 and Shaktiman 4) and three levels of sulphur (15, 30 and 45 kg S/ha) in sub-plots. Results revealed that growth, yield attributes, yield, and economics of quality protein maize hybrid was significantly increased with application of increasing levels of nitrogen and sulphur up to 150 kg N/ha. Application of 45 kg S/ha obtained highest grain yield during 1st and 2nd years, respectively over 15 kg S/ha. The highest gross return was also recorded under the same treatments. Hence, it may be concluded that quality protein hybrid Shaktiman 4 along with 150 kg N applied/ha with 45 kg S/ha recorded significantly highest yield and gross income under dryland conditions of EasternUttar Pradesh, India.


2015 ◽  
Vol 7 (2) ◽  
pp. 970-975 ◽  
Author(s):  
Ashok Pal ◽  
Sanjay Kumar Dwivedi ◽  
Pradip Kumar Maurya ◽  
Poolchand Kanwar

A field experiment was conducted during the rabi season of 2012-13 at Research cum Instructional Farm of Indira Gandhi Krishi Vishwavidyalaya, Raipur (Chhattisgarh) to study the effects of seaweed saps on growth, yield, nutrient uptake and economic of maize (sweet corn) in Matasi soil of Chhattisgarh. The foliar spray of two different species (namely Kappaphycus and Gracilaria) was applied thrice at different interval of crop with different concentrations (0, 2.5, 5.0, 7.5, 10.0 and 15% v/v) of seaweed extracts. Foliar applications of seaweed extract significantly enhanced the growth, yield, nutrient uptake and B:C ratio parameters. The green cob yield (189.97 q ha-1) and fodder yield (345.19 q ha-1) were recorded highest under treatment (T8) 15% G Sap + recommended dose of fertilizer (RDF) which was significant similar with treatment 15% K Sap + RDF (185.24 q ha-1) in case of green cob yield. The highest N, P and K uptake by green cob and fodder were observed under 15% G Sap + RDF (T8). Treatment 15% G Sap + RDF (T8), recorded maximum gross return (Rs. 2,07,230 ha-1), net return (Rs. 1,38,756 ha-1) and B:C ratio (2.0), which was followed by treatment 15% K Sap + RDF (T4) with net return (Rs. 1,33,199 ha-1) and B:C ratio (1.95). Treatment 15% G Sap + RDF (T8) gave Rs. 45,996 ha-1 more as compared to Water spray + RDF (T9).


2020 ◽  
Vol 7 (03) ◽  
Author(s):  
S. K. YADAV ◽  
R. K. SINGH ◽  
V. K. DUA ◽  
S SINGH ◽  
SARALA YADAV ◽  
...  

A field experiment was carried out during 2015-16 and 2016-17 at ICAR-Central Potato Research Station, Patna, Bihar, in randomized block design with four replications with objective to quantity the optimum requirement of nitrogen to potato crop. Significantly the highest plant height was recorded with nitrogen level of 300 kg/ha. Distributions of the smallest size of tuber yield of potato were decreasing with increasing the level of nitrogen. There was about 26.0% more yield of the smallest size tuber of potato was recorded with zero nitrogen as compare to the highest level of nitrogen i.e. 300 kg/ha. Increasing the nitrogen over the level of 150 to 225 kg per hectare, increasing the yield of tuber gradually slower rate than nitrogen level from 0 to 150 kg/ha. Total and marketable tuber yield of potato were increasing significantly with increasing level of nitrogen up to 150 kg/ha. There was no significant difference in marketable tuber yield was found for nitrogen level between 150 and 225 kg/ha. Highest (1.66) net benefit cost ratio was also recorded with level of nitrogen @ 150 kg/ha in potato. Hence, application of nitrogen @ 150 kg/ha was found statistically and economically more beneficial for potato cultivation in Eastern Indo-Gangatic plain of India.


2016 ◽  
Vol 20 (1) ◽  
pp. 59-64
Author(s):  
MN Islam ◽  
MM Rahman ◽  
MJA Mian ◽  
MH Ali

Leaching loss of nutrients hampers plant growth and contributes to environmental pollution. An experiment was conducted at the net house of Soil Science Department, Bangladesh Agricultural University, Mymensingh during January to May 2009 to find out the leaching loss of N, P, K and S from sandy loam soil. Each pot received 6.67 kg dry soil with an opening at the bottom for collecting leachates. Six treatments were used: T0 = control, T1 = NPKS (120, 25, 60 and 20 kg ha-1), T2 = NPKS (180, 37, 90 and 30 kg ha-1), T3 = NPKS (90, 5, 28 and 17 kg ha-1) + cowdung (2.5 t ha-1), T4 = NPKS (109, 25, 60 and 20 kg ha-1, N as USG) and T5 = as T1 but N applied as foliar spray. Treatments were arranged in a completely randomized design with three replications. Leachates were collected at 15 days interval for determination of NPKS. The total leaching loss of N, P, K and S due to different treatments ranged from 16.00 to 90.21, 0.07 to 0.29, 9.60 to 11.20 and 3.75 to 17.81 kg ha-1, respectively. Application of chemical fertilizer at higher rates resulted in greater loss of nutrients. Integrated fertilizer management with cowdung (T3) minimized such losses. Use of USG also reduced leaching loss of N, P, K and S. The application of cowdung and USG with recommended balanced fertilizer might be useful for minimizing N, P, K and S loss from wetland rice field.Bangladesh Rice j. 2016, 20(1): 59-64


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