Integrated management of phytonematodes by the application of organic amendment and ploughing under field conditions

2012 ◽  
Vol 45 (20) ◽  
pp. 2437-2444
Author(s):  
A. Usman ◽  
M.A. Siddiqui
Keyword(s):  
Organic Amendment ◽  
Integrated Management ◽  
Field Conditions

scholarly journals Management of Purple Blotch Complex of Onion in Indian Punjab

2017 ◽  
Vol 5 (4) ◽  
pp. 454-465 ◽  
Author(s):  
Ritesh Kumar Yadav ◽  
Amarjit Singh ◽  
Sandeep Jain ◽  
Ajmer Singh Dhatt
Keyword(s):  
Integrated Management ◽  
Field Conditions ◽  
Cost Ratio ◽  
Seed Crop ◽  
Systemic Fungicides ◽  
Benefit Cost Ratio ◽  
Field Efficacy ◽  
Seed Method ◽  
Benefit Cost

Six systemic fungicides viz.,  Kitazin 48 EC (iprobenfos), Tilt 25 EC (propiconazole), Folicur 25 EC (tebuconazole), Score 25 EC (difenoconazole), Amistar Top 325 SC (azoxystrobin 18.2% + difenoconazole 11.4%) and Nativo 75 WG  (trifloxystrobin 25% + tebuconazole 50%), and two non-systemic fungicides viz., Indofil M-45 75 WP (mancozeb) and Kocide 77 WP (copper hydroxide), were evaluated under in vitro and field conditions for their efficacy to manage purple blotch complex of onion caused by Alternaria porri and Stemphylium vesicarium. Field efficacy of  the fungicides at different concentrations were determined in controlling the purple blotch complex of onion under artificial epiphytotic conditions on bulb and seed crop (cultivar PRO-6) during the Rabi season 2014-2015 and 2015-2016, respectively. The triazole fungicides, tebuconazole and difenoconazole proved superior in inhibiting growth of A. porri and S. vesicarium under in vitro conditions, respectively. Further, foliar sprays (3 for bulb crop and 4 for seed crop) of tebuconazole 25 EC (Folicur) @ 0.1 per cent at fortnightly interval most effectively managed purple blotch complex of onion under field conditions with highest Benefit: Cost ratio (8.75:1 and 88.7:1) in bulb and seed crop, respectively. Seed-to-seed method of onion seed production recorded significantly lower disease severity and higher seed yield than that of bulb-to-seed method under natural epiphytotic conditions. The present findings can be instrumental in devising strategy for the integrated management of A. porri, S. vesicarium singly as well as in complex, serious limiting biotic factors in onion production. Int. J. Appl. Sci. Biotechnol. Vol 5(4): 554-565

scholarly journals The Damage Capacity ofMahanarva spectabilis(Distant, 1909) (Hemiptera: Cercopidae) Adults onBrachiaria ruziziensisPasture

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Tiago Teixeira Resende ◽  
Alexander Machado Auad ◽  
Marcy das Graças Fonseca ◽  
Fausto Souza Sobrinho ◽  
Dayane Ribeiro dos Santos ◽  
...  
Keyword(s):  
Chlorophyll Content ◽  
Dry Matter ◽  
Integrated Management ◽  
Field Conditions ◽  
Insect Infestation ◽  
Damage Score ◽  
Brachiaria Ruziziensis ◽  
Infestation Density ◽  
Loss Index

The aim of this study was to determine the damage caused by adultMahanarva spectabilis(Distant, 1909) (Hemiptera: Cercopidae) onBrachiaria ruziziensis(Germain & Evard) under field conditions. A total of 0, 4, 8, 12, or 16M. spectabilisadults per plot were maintained for 6 days. Thereafter, the insects were removed from the plant, and the following parameters were evaluated: chlorophyll content, damage score, dry as well as fresh weights, percentage of shoots’ dry matter, and the forage’s ability to regrow. The chlorophyll content was significantly reduced; the damage score and percentage of dry matter in plants increased depending on the increased insect infestation density after 6 days of exposure. In contrast, no change was observed on theB. ruziziensisfresh and dry weights as well as the regrowth capacity depending on theM. spectabilisinfestation densities. Attacks by 8 adultM. spectabilisper clump ofB. ruziziensiswith an average of 80 tillers for 6 days were sufficient to reduce the chlorophyll content and the functional plant loss index. This density can be a reference for spittlebug integrated management inBrachiaria.

scholarly journals Integrated management of bacterial wilt of ginger incited by Ralstonia solanacearum

2020 ◽  
Vol 15 (2) ◽  
pp. 86-91
Author(s):  
Roop Singh
Keyword(s):  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Root Length ◽  
Organic Amendment ◽  
Integrated Management ◽  
Shoot Length ◽  
Biocontrol Agents ◽  
Seedling Mortality ◽  
Vigour Index ◽  
Seed Rot

An experiment was conducted to find out the integrated management of Ralstonia solanacearum infecting ginger. Two antibiotics, two biocontrol agents, one phytoextract and one organic amendment and their combination were used. The average reduction in pre emergence seed rot and post emergence seedling mortality recorded with all the treatments tested were ranged from 16.50 to 80.39 per cent over untreated. However, significantly highest reduction in average preemergence seed rot and post- emergence seedling mortality was recorded with streptocycline + P. fluorescens (80.39%). This was followed by streptocycline + karanj cake (72.31%), streptocycline + T. viride (69.55%), streptocycline (58.68%), karanj cake + A. sativum (48.49%), P. fluorescens (44.94%), karanj cake (36.79%). Whereas, T. viride, A. sativum and gentamycin were found least effective with comparatively minimum reduction in average mortality, 26.94, 20.94 and 16.50 per cent, respectively. Of the treatments tested, significantly highest root length (8.60 cm), shoot length (18.43 cm) and vigour index (2342.69) were recorded with streptocycline + P. fluorescens.

scholarly journals Integrated management of tobacco caterpillar and cabbage butterfly with host plant resistant and organic amendment

2018 ◽  
Vol 43 (4) ◽  
pp. 619-630
Author(s):  
S Talukder ◽  
MMH Khan ◽  
J Ferdous ◽  
MO Faruq
Keyword(s):  
Organic Agriculture ◽  
Organic Amendment ◽  
Integrated Management ◽  
Pieris Brassicae ◽  
Mustard Oil ◽  
Damage Potential ◽  
Total Head ◽  
Mustard Oil Cake ◽  
And Control ◽  
Tobacco Caterpillar

Field study was conducted at Patuakhali Science and Technology University, Patuakhali during 2013-2014 to know the effect of cabbage variety and organic agriculture on the damage potential of Spodoptera litura F. and Pieris brassicae L. Two cabbage varieties viz., Atlas-70 (V1) and Super tropic (V2), and organic agriculture like, M0 = control, M1 = cowdung @ 6 kgplot-1, M2 = mustard oilcake @ 750gplot-1, M3 = Vermicompost @ 3 kgplot-1 and M4 = Trichoderma @ 3 kgplot-1 were included in this study. Treatment combinations were V1M0, V1M1, V1M2, V1M3, V1M4, V2M0, V2M1, V2M2, V2M3 and V2M4. Results revealed that the lowest number of infested plants/plot and percent infested leavesplant-1 were found in variety Super tropic and trichoderma (V2M4) applied plots followed by variety Atlas-70 and vermicompost (V1M3) applied plots on different dates of observation while the highest number of infested plantsplot-1 and percent infested leaves plant-1 were in variety Super tropic and mustard oil cake (V2M2) applied plots followed by variety Atlas-70 and control (V1M0) applied plots. The highest number and percent (4.00 plot-1) and (20.00% plot-1) of infested heads were found in variety Super tropic and mustard oil cake (V2M2) applied plots followed by variety Atlas-70 and control plots (V1M0) (16.65%). The highest number of healthy heads plot-1 (19.67), healthy head yield (71.47 t ha-1) and total head yield (72.14 t ha-1) were recorded in variety Super tropic and Tricoderma (V2M4) applied plots followed by variety Atlas-70 and vermicompost (V1M3) (70.53 t ha-1) applied plots while the lowest number of healthy heads per plot, healthy head yield and total head yield were recorded in in variety Super tropic and mustard oil cake (V2M2) applied plots followed by variety Atlas-70 and control plots (V1M0).Bangladesh J. Agril. Res. 43(4): 619-630, December 2018

Transfer of radiocesium to four cruciferous vegetables as influenced by organic amendment under different field conditions in Fukushima Prefecture

2015 ◽  
Vol 140 ◽  
pp. 148-155 ◽  
Author(s):  
Han Phyo Aung ◽  
Salem Djedidi ◽  
Tadashi Yokoyama ◽  
Sohzoh Suzuki ◽  
Sonoko Dorothea Bellingrath-Kimura
Keyword(s):  
Organic Amendment ◽  
Field Conditions ◽  
Cruciferous Vegetables ◽  
Fukushima Prefecture

EFFECT OF IMMOBILIZATION ON NITROGEN TRANSFORMATIONS AND TRANSPORT IN A FIELD 15N EXPERIMENT

1981 ◽  
Vol 61 (2) ◽  
pp. 387-395 ◽  
Author(s):  
C. G. KOWALENKO
Keyword(s):  
Organic Amendment ◽  
Field Conditions ◽  
Soil Profiles ◽  
N Recovery ◽  
N Addition ◽  
Nitrogen Transformations ◽  
Available Carbon ◽  
The Difference ◽  
And Control

A microplot trial conducted between 31 May 1977 and 11 May 1978 containing straw alone and with 15NH4+, glucose alone, with 15NH4+ or with 15NO3−, 15NH4+ alone, and control treatments examined the interplay of N processes, particularly immobilization and clay fixation of 15NH4+ under field conditions. The dynamics of the changes were examined by sampling the soil profiles 4 Oct. 1977 and 11 May 1978. In October 1977, total 15N recovery to 75 cm (avg 84%) was not affected by the treatments, but the distribution of inorganic 15N was affected by the treatments. The 15NH4+-only treatment showed greater leaching than organic + 15N treatments. By May 1978, the organic + 15N amended treatments retained more 15N than the 15NH4+-only treatment and the difference was attributed to less leaching in the organic amended treatments. All apparent immobilization and clay fixation of 15N occurred between May 1977 and October 1977. The type of organic amendment influenced the amount of immobilization and clay fixation of 15N. Addition of straw resulted in greater fixation of 15NH4+ than in a treatment with 15NH4+ only. There was more immobilization with glucose than with straw. Glucose amendment reduced the fixation of 15NH4+ showing that immobilization can effectively compete against fixation for 15NH4+ if adequate available carbon is present. The results showed that the type of amendment (straw vs. glucose or NH4+ vs. NO3−1) added to a soil influences immobilization and clay fixation processes and thus changes the retention of N against leaching and denitrification.

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