scholarly journals Cultural, Morphological and Pathogenic Variability of Different Isolates of Sclerotium rolfsii Obtained from Rice-Tomato-Rice Cropping System of Undulating Red and Lateritic Zone of West Bengal

2017 ◽  
Vol 6 (3) ◽  
pp. 1843-1851 ◽  
Author(s):  
Asish Mahato Mohan Kumar Biswas
Keyword(s):  
West Bengal ◽  
Sclerotium Rolfsii ◽  
Cropping System ◽  
Pathogenic Variability

scholarly journals Dynamics of Sclerotium rolfsii as influenced by different crop rhizosphere and microbial community

2017 ◽  
Vol 9 (3) ◽  
pp. 1544-1550 ◽  
Author(s):  
K. Ray ◽  
K. Sen ◽  
P.P. Ghosh ◽  
A. Roy Barman ◽  
R. Mandal ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Microbial Community ◽  
West Bengal ◽  
Plant Cover ◽  
Sclerotium Rolfsii ◽  
Cropping System ◽  
Damping Off ◽  
Microbiological Parameters ◽  
Level Of Significance

This study was carried out with the aim of evaluating pathogenicity of Sclerotium rolfsii to different crops influenced by different crop rhizosphere microbes and their population dynamics. Napier was found to be non-preferred host against S. rolfsii pathogen. Among the seven tested crops in micro-plot study, highest level of induction of sclerotial population was observed in groundnut and cow peas (21.81 and 20.06 numbers of sclerotia /100 g of soil, respectively), whereas, reduction in sclerotial number was observed in napier, maize and sorghum plots. S. rolfsii induced damping off was found to be significantly positively correlated with average sclerotial population irrespective of plant cover even at 1% level of significance (r = 0.985) and among the microbiological parameters, FDA was found to be significantly negatively correlated with damping off disease percentage at 5% level of significance (r = - 0.830). Therefore, Napier may be the potential crop to be incorporated in the sequence of rice/vegetable based cropping system in West Bengal for management of this dreaded pathogen.

scholarly journals Land Situation and Sowing Date Effects Growth and Yield of Crops in the Rice-Pulse Based Cropping Systems of Coastal India

Proceedings ◽  
2020 ◽  
Vol 36 (1) ◽  
pp. 152
Author(s):  
Koushik Brahmachari ◽  
Sukamal Sarkar ◽  
Donald S. Gaydon ◽  
Manoj Kumar Nanda ◽  
Argha Ghosh ◽  
...  
Keyword(s):  
West Bengal ◽  
Cropping Systems ◽  
Winter Season ◽  
Cropping System ◽  
Sowing Date ◽  
Growth And Yield ◽  
Limited Area ◽  
Pulse Crops ◽  
Stover Yield ◽  
Saline Zone

The costal saline zone of West Bengal in India is the home for millions of the world’s poorest and most vulnerable people. Due to gradual increase in salt accumulation on soils of the costal saline zone of West Bengal in India from winter to summer days, cultivation of the second crop in winter season becomes possible in a limited area. To address this issue, field experiment was conducted both in rainy and winter seasons of 2016–2017 and 2017–2018 in this zone to study the feasibility of incorporating different winter pulses (lentil and grass pea) in the rice based cropping system. The experiment was conducted in strip plot design having two factors namely, Factor I: Six dates of sowing of rice at an interval of one week (2nd week of June to 3rd week of July) and Factor II: Two land situations (Medium-upland and Medium-lowland). Date of sowing significantly influenced dry matter and macro-nutrients (NPK) partitioning in rice. Irrespective of land situation, crop sown on 1st and 2nd dates recorded significantly higher grain yield and macro-nutrient uptake by rice. Date of sowing of rice and land situation also significantly influenced the seed and stover yield of different pulse crops. Pulse crops sown on 1st and 2nd dates recorded significantly higher seed yield in coastal saline ecology of West Bengal, India.

Response of Strip-Tilled Peanut to Broiler Litter, Starter Fertilizers, and Fungicide in an Irrigated Cropping System

2003 ◽  
Vol 30 (1) ◽  
pp. 53-60 ◽  
Author(s):  
G. J. Gascho ◽  
T. B. Brenneman
Keyword(s):  
Conservation Tillage ◽  
Management Practice ◽  
Economic Value ◽  
Sclerotium Rolfsii ◽  
Cropping System ◽  
Soil Surface ◽  
Stem Rot ◽  
Broiler Litter ◽  
Starter Fertilizer ◽  
Pod Yield

Abstract Peanut (Arachis hypogaea L.) production in the Southern Coastal Plain of the U.S. is being impacted by increased use of broiler litter and by conservation tillage. There are no studies on the use of broiler litter for peanut grown in strip tillage and very little information on the use of starter fertilizers. Runner-type peanut was included in a 3 yr, double-cropped, irrigated rotation to determine the effects of broiler litter rates and starter fertilizers on disease development, pod yield, market grade, and gross economic value of runner market type peanut. Broiler litter rates of 0, 4.5, 9.0, and 13.5 Mg/ha were applied to the soil surface without incorporation prior to seeding. Within each broiler litter rate there were three starter fertilizer regimes (none, 93 L10–34–0/ha, and 93 L 12–22–5/ha) each with and without flutolanil {N-[3-(1-methylethoxy) phenyl]-2-(trifluoromethyl) benzamide}applied twice at 1.12 kg ai/ha/application. Over 4 yr, broiler Utter either decreased or did not affect pod yield, market grade, or gross economic value of peanut. Southern stem rot (Sclerotium rolfsii) incidence was not affected by broiler litter, but Rhizotonia limb rot (Rhizoctonia solani, AG-4) incidence increased with broiler litter rate, possibly accounting for some of the decreases in production variables. Broiler litter application was neither an agronomic nor economic best management practice for peanut in this strip-tilled study. Flutolanil increased pod yield, market grade, and gross economic value of peanut regardless of broiler litter rate by decreasing the incidence of southern stem rot and Rhizotonia limb rot. Starter fertilizer had little effect on any of the measured parameters.

Pathogenic variability ofPseudoperonospora cubensisin Gangetic Alluvial region of West Bengal, India

2013 ◽  
Vol 47 (2) ◽  
pp. 230-239
Author(s):  
S. Hembram ◽  
S. Dutta ◽  
I. Bhattacharya ◽  
A. Saha ◽  
A. Chattopadhyay ◽  
...  
Keyword(s):  
West Bengal ◽  
Pathogenic Variability

scholarly journals Effects of Two Cropping and Two Tillage Systems and Pesticides on Peanut Pest Management1

1991 ◽  
Vol 18 (1) ◽  
pp. 41-46 ◽  
Author(s):  
N. A. Minton ◽  
A. S. Csinos ◽  
R. E. Lynch ◽  
T. B. Brenneman
Keyword(s):  
Cropping Systems ◽  
Sclerotium Rolfsii ◽  
Cropping System ◽  
Conventional Tillage ◽  
White Mold ◽  
Anticarsia Gemmatalis ◽  
Root Knot Nematode ◽  
Velvetbean Caterpillar ◽  
Tillage Systems ◽  
Minimum Tillage

Abstract In one or more years of a 3-year study, white mold (Sclerotium rolfsii) and Rhizoctonia limb rot (Rhizoctonia solani) damaged peanuts less in a wheat-peanut than in the fallow-peanut cropping system, but velvetbean caterpillar (Anticarsia gemmatalis) damage was less in the fallow-peanut. Thrips (Frankliniella fusca) and Rhizoctonia limb rot damage was less in minimum tillage than in conventional tillage but root-knot nematode (Melodogyne arenaria) damage was less in conventional tillage. Aldicarb reduced root-knot and lesion nematode (Pratylenchus brachyurus), thrips, and potato leafhopper (Empoascafabae) damage, but increased numbers of three cornered alfalfa hoppers (Spissistilus festinus) and velvetbean caterpillar damage. Flutolanil reduced white mold and Rhizocotonia limb rot damage. There was a high negative correlation (P=0.0001) of number of white mold loci with yield (r=-0.70). Rhizoctonia limb rot, gall and lesion indices and number of lesion nematodes in the soil were also negatively correlated with yield, but at low levels. Cropping systems did not affect peanut yields; however, tillage systems and nematicide/insecticide and fungicide treatments had major effects. Mean yield in conventional-tillage plots were greater than in minimum-tillage plots for the control and each chemical treatment. Mean yields were 11.1%, 55.9%, and 77.3% greater than control of aldicarb, flutolanil, and aldicarb plus flutolanil treatments, respectively, across cropping systems, tillage systems, and years.

scholarly journals Productivity and Nutrient Balance of an Intensive Rice–Rice Cropping System Are Influenced by Different Nutrient Management in the Red and Lateritic Belt of West Bengal, India

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1622
Author(s):  
Tanmoy Shankar ◽  
Ganesh Chandra Malik ◽  
Mahua Banerjee ◽  
Sudarshan Dutta ◽  
Sagar Maitra ◽  
...  
Keyword(s):  
Nutrient Management ◽  
West Bengal ◽  
Nutrient Balance ◽  
Maximum Yield ◽  
Cropping System ◽  
Test Weight ◽  
Recommended Dose ◽  
World Population ◽  
Panicle Length ◽  
Yield Attributes

Rice is the lifeline for more than half of the world population, and in India, in view of its huge demand in the country, farmers adopt a rice–rice cropping system where the irrigation facility is available. As rice is a nutrient-exhausting crop, sustainable productivity of rice–rice cropping system greatly depends on appropriate nutrient management in accordance with the inherent soil fertility. The application of an ample dose of fertilizer is the key factor for maintaining sustainable rice yields and nutrient balance of the soil. Considering the above facts, an experiment was conducted on nutrient management in a rice–rice cropping system at the university farm of Visva-Bharati, situated in a sub-tropical climate under the red and lateritic belt of the western part of West Bengal, India, during two consecutive years (2014–2016). The experiment was laid out in a Randomized Completely Block Design with 12 treatments and three replications, with different rates of N:P:K:Zn:S application in both of the growing seasons, namely, kharif and Boro. The recommended (ample) dose of nutrients was 80:40:40:25:20 and 120:60:60:25:20 kg ha−1 of N:P2O5:K2O:Zn:S in the Kharif and Boro season, respectively. A high yielding variety, named MTU 7029, and a hybrid, Arize 6444 GOLD, were taken in the Kharif and Boro seasons, respectively. The results clearly indicated that the application of a recommended dose of nutrients showed its superiority over the control (no fertilizer application) in the expression of growth characters, yield attributes, yields, and nutrient uptake of Kharif as well as Boro rice. Out of the all treatments, the best result was found in the treatment where the ample dose of nutrients was applied, resulting in maximum grain yield in both the Kharif (5.6 t ha−1) and Boro (6.6 t ha−1) season. The corresponding yield attributes for the same treatment in the Kharif (panicles m−2: 247.9; grains panicle−1: 132.0; spikelets panicle−1: 149.6; test weight: 23.8 g; and panicle length: 30.6 cm) and Boro (panicles m−2: 281.6; grains panicle−1: 142.7; spikelets panicle−1: 157.2; test weight: 24.8 g; and panicle length: 32.8 cm) season explained the maximum yield in this treatment. Further, a reduction or omission of individual nutrients adversely impacted on the above traits and resulted in a negative balance of the respective nutrients. The study concluded that the application of a recommended dose of nutrients was essential for proper nutrient balance and sustainable yields in the rice–rice cropping system.

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