scholarly journals Chemical and Non-chemical Method of Weed Management in Blackgram (Vigna mungo L.) in North Eastern Zone of Tamil Nadu

2019 ◽  
Vol 12 (4) ◽  
Author(s):  
C. Sivakumar
Keyword(s):  
Weed Management ◽  
Tamil Nadu ◽  
Chemical Method ◽  
Vigna Mungo ◽  
Eastern Zone ◽  
North Eastern

scholarly journals Optimizing the nitrogen fertilizer requirement for prerelease short duration rice cultures in North Eastern zone of Tamil Nadu

2021 ◽  
Vol 16 (2) ◽  
pp. 126-130
Author(s):  
C. Muralidaran ◽  
S. Malathi ◽  
S. Banumathy
Keyword(s):  
Nitrogen Fertilizer ◽  
Tamil Nadu ◽  
Field Experiments ◽  
Cost Ratio ◽  
Research Station ◽  
Yield Attributes ◽  
Eastern Zone ◽  
North Eastern ◽  
Fertilizer Requirement ◽  
Check Variety

Field experiments were conducted for two years during 2017 and 2018 at Rice Research Station, Tirur to optimize nitrogen fertilizer requirement for pre-release rice cultures TM10085, TM 07335, TM 07030 along with the check variety CO51. The trial was conducted in split plot design with three replications and the main plot consisted of three pre-released rice cultures along with one check variety. The sub plot consisted of three fertilizers doses viz., 150-50-50 NPK kg/ha, 175-50- 50 NPK kg/ha and 125-50-50 NPK kg/ha. In this experiment, the rice culture TM10085, along with fertilizer application of 150-50-50 NPK kg/ha recorded the highest grain yield of 5505 kg/ha during 2018. This treatment also registered highest growth, yield attributes and benefit cost ratio in Tirur, Tiruvallur district of North Eastern Zone, Tamil Nadu.

scholarly journals Intraspecific Hybridization between Non-spiny and Spiny Brinjal for Developing Non-Spiny Brinjal without Deletion of Spiny Brinjal Qualities

2020 ◽  
pp. 1-6
Author(s):  
Pandiyan M ◽  
Keyword(s):  
Tamil Nadu ◽  
Pure Line ◽  
Cross Combination ◽  
Intraspecific Hybridization ◽  
Green Colour ◽  
Eastern Zone ◽  
North Eastern ◽  
Line Selection

An objective to develop Non-spiny brinjal without deletion of quality characters of spiny brinjal for consumers preference and also avoid hitting of spines to harvesters. Spiny brinjal (VRM-1Mullukathiri) is a pure line selection from Elavambadi village of Vellore district of Tamil Nadu. Spines are present in the leaf, stem and calyx of the fruit. VRM-1Mullukathiri is high yielding (30-35 t/ha-1) and most suitable for North-Eastern Zone of Tamil Nadu. From this cross of Non-spiny x spiny cross combination, the VMB-012-008 was identified for big size fruit with green colour fruits.

scholarly journals Arthropod Diversity in Rice nurseries in North-Eastern Zone of Tamil Nadu

2004 ◽  
Vol 2 (2) ◽  
pp. 1-7
Author(s):  
J. Diraviam ◽  
M. Selvanayagam ◽  
S. Ignacimuthu
Keyword(s):  
Relative Abundance ◽  
Tamil Nadu ◽  
Rice Cultivar ◽  
Arthropod Diversity ◽  
The North ◽  
Eastern Zone ◽  
Wide Range ◽  
North Eastern ◽  
Arthropod Fauna ◽  
Ecological Complexity

Agricultural systems are often considered by ecologists as disturbed, depauperate, and evolutionarily recent. But tropical rice agro-ecosystem is one exception due to its ecological complexity resulted by the long ecological complexity resulted by the long ecological history and wide geographical distribution. Rice nursery is very similar to natural grassland and offers a wide scope for studying the biodiversity due to the presence of arthropod fauna. A survey was conducted in five rice nursery fields in the same period in three villages of two districts of the north eastern zone of Tamil Nadu: Budur, Kavarapettai and Narasingapuram of Tiruvallur district, and Kavur and Malaiyambakkam of Kancheepuram district during Sornavari season,2003(April to August). The rice cultivar was uniformly ADT 43, a short duration variety. No chemical pesticide was applied in the nursery fields and the seedlings were of uniform age. Fifty double sweep net samples were taken to study arthropod diversity. The specimens sorted out were grouped into three guilds, viz., pests, entomophages and neutrals, and their relative abundance was worked out. . The overall observations revealed that a wide range of arthropod fauna were present in the rice nursery fields. The neutrals were the most dominant guilds in four out of five locations. The relative abundance range from 30.22 to 67.13% .This guild was followed by the pests, which ranged from 17.5 to 48.58%. The abundance of entomophages ranged from 13.32 to 24.36%. Among the locations, the maximum relative abundance of pest and entomophage guilds was observed in Narasingapuram. The maximum relative abundance of neutrals was observed in Budur. The green leaf hopper, white flies, white-bat plant hopper, grass hoppers and trips were the major pests. The pre dominant entomophages were the spiders, parasitic hymenoptera and ground beetles. Dipteran flies and hydrophilids were the pre dominant neutrals observed. It may be concluded that rice nursery field supports a wide range of arthropods. The neutrals help in the buildup of carnivorous (entomophages), which ultimately check the pest population.

scholarly journals Synthesizing Nanoencapsulated Sulfentrazone Herbicide and Optimizing Time and Dose for Season Long Weed Management in Irrigated Blackgram (Vigna mungo L.)

2021 ◽  
Author(s):  
Vikram Kannamreddy ◽  
C.R. Chinnamuthu ◽  
S. Marimuthu ◽  
C. Bharathi
Keyword(s):  
Weed Management ◽  
Tamil Nadu ◽  
Field Experiments ◽  
Block Design ◽  
Vigna Mungo ◽  
Size Analysis ◽  
Main Trial ◽  
Randomized Block Design ◽  
Quizalofop Ethyl ◽  
Screening Trial

Background: Pulses are nutritious edible seeds of leguminous plants, have become an essential part of the human diet. Among the pulses, blackgram (Vigna mungo L.) is an important legume crop cultivated in tropical and subtropical regions of the world. Even though there are so many factors responsible for the lower yield of blackgram, weeds play a major role. Sulfentrazone is a broad spectrum herbicide belongs to the family of phenyl triazolinone. Sulfentrazone has high persistence and mobility with mean partition coefficient Koc = 43 and sorption coefficient Kd less than 1 and also has high horizontal and vertical leaching potential. Even though generally used herbicides in blackgram like pendimethalin, imazethapyr and quizalofop-ethyl are helpful in managing weeds, they have to apply multiple times or have to integrate with other methods of weed management which is expensive. So as to reduce the usage of multiple herbicides, to avoid manual weeding and to achieve season long weed control without affecting the environment the nano-encapsulated sulfentrazone is the better alternative and it gives better solution for the above constraints besides increasing the productivity.Methods: Laboratory and field experiments were conducted in the Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore during 2019-2020. Laboratory experiment was conducted to prepare nano-encapsulated sulfentrazone herbicide using solvent evaporation method. Screening trial was conducted in field with 17 treatments in randomized block design. Main trial was conducted with nine treatments of randomized block design by selecting the best performing treatments in screening trial. A confirmatory trial was also conducted by using same treatments.Result: The encapsulated sulfentrazone particles were characterized in SEM (Scanning electron microscope) and also analysed with EDAX (Energy dispersive X-ray analysis) for elemental analysis, which is followed by particle size analysis and zeta potential to know the size and stability respectively. All these tests concluded that the sulfentrazone particles were encapsulated correctly and might be useful for slow release of the particle and also for reducing vertical and horizontal leachability. The field trials revealed that sulfentrazone @ 0.30 kg a.i. ha-1 with encapsulation applied at 1 DBS is better alternative for the season long weed management in blackgram without affecting the soil and ground water, as well as increasing the productivity.

scholarly journals ASSESSMENT OF LONG DURATION PIGEON PEA (Cajanuscajan) VARIETIES WITHSTAND DROUGHT AND WILT DISEASE IN RAINFED REGION OF NORTH EASTERN ZONE OF TAMIL NADU

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
P. Veeramani ◽  
V. Sendhilvel
Keyword(s):  
Plant Height ◽  
Tamil Nadu ◽  
Wilt Disease ◽  
Growth And Yield ◽  
Plant Seed ◽  
Yield Attributes ◽  
Improved Varieties ◽  
Long Duration ◽  
Eastern Zone ◽  
North Eastern

A study was conducted for evaluation of different long duration and high yielding pigeonpea varieties in rainfed region of North Eastern Zone of Tamil Nadu to assess its drought and wilt disease tolerance. The field trials were conducted at Vellore district, Tamil Nadu during Kharif season 2017-18using improved varieties along with ruling verities as comparative check. The experimental plot was laid out in Randomized Block Design (RBD) and replicated in five times with the improved varieties of LRG 41, LRG 52 and CO-8 that are conferred for rainfed condition along withruling pigeonpea variety CO-7 as Farmers practices. During the study, the recommended dose of fertilizer (RDF) was applied as per crop production guide. The growth and yield attributes viz.,plant height (cm), number of primary and secondary branches per plant, number of pods per plant, seed yield (kg/ha), Stover yield (kg/ha)were recorded. The wilt disease caused by Fusarium udum Butler which is predominant yield limiting disease was also recorded. The results on field level performance the genotypes revealed that the pigeonpea CO 8 was recorded maximum plant height (184.2 cm), higher number of primary branches per plant (16.7), secondary branches per plant (29.5), number of pods per plant (279.8), minimum incidence (7.0 %) wilt disease with higher yield of 1290 kg/ha was gained. Based on the on farm trial results, it could be concluded that the long duration pigeonpea variety CO 8 was found to be better option for achieving higher productivity and profitability under the rainfed region of North Eastern Zone of Tamil Nadu.

Sign in / Sign up

Export Citation Format

Share Document