scholarly journals Studies on leaf nutrient status and seed yield of different pruning intensity treatments in Azadirachta indica A. Juss plantation at Tirunelveli district of Tamil Nadu, India

2020 ◽  
Vol 2 (2) ◽  
pp. 69-73
Author(s):  
P. Prabakaran ◽  
◽  
K. Kumaran ◽  
Keyword(s):  
Seed Yield ◽  
Azadirachta Indica ◽  
Tamil Nadu ◽  
Nutrient Status ◽  
Pruning Intensity

Evaluation of Gloriosa superba for Yield Attributing Characters and Quantification of Colchicine Originated from Different Agro Climatic Zones of Tamil Nadu and Andhra Pradesh

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
Arun Kumar P. ◽  
Elangaimannan R.
Keyword(s):  
Seed Yield ◽  
Tamil Nadu ◽  
High Performance ◽  
Andhra Pradesh ◽  
Crop Improvement ◽  
Mean Value ◽  
Hplc Method ◽  
Gloriosa Superba ◽  
Climatic Zones ◽  
Colchicine Alkaloid

The study was conducted to evolve Gloriosa superba for yield characters and alkalodi content for selecting elite genotypes for comercial exploitatio n. The genotypes were sowm in Variyankaval village, Udayarpalayam taluk of Ariyalur district, Tamil Nadu. The highest mean value for fresh and dry seed yield was observed in Chittor local. The genotype Mulanur local has recorded the highest mean value for number of pods per plant and number of seeds per pod and Arupukotai local excelled the general mean for the traits seeds per pod, fresh and dry seed yield and also for tuber characters. An investigation was carried out to quantify the colchicine (alkaloid) present in tubers by High Performance Liquid Chromatography (HPLC) method. The genotypes collected from Arupukotai recorded the highest colchicine content (0.760 mg/g) followed by Chittoor (0.578 mg/g) and Mulanur (0.496 mg/g) and there by these three genotypes were utilized for further crop improvement.

scholarly journals Analysis of Nutrient Security Prospects in Rural Tamil Nadu: Nutrient Availability, Nutrient Consumption Status and Way to Attain Nutrient Security

2021 ◽  
Vol 9 (3) ◽  
pp. 10-22
Author(s):  
S. Appasmandri ◽  
Keyword(s):  
Nutrient Availability ◽  
Rural Areas ◽  
Distribution System ◽  
Tamil Nadu ◽  
Nutrient Status ◽  
Consumption Pattern ◽  
Public Distribution System ◽  
Nutrient Consumption ◽  
Tamil Nadu State ◽  
Availability Assessment

Among the basic needs of life, food possesses ahead of everyone else as it nourishes us and able to stand which leads further activity. Tamil Nadu state is self-sufficient in food production and Nutrient availability assessment also shows the same but the consumption pattern shows inverse pattern to availability because consumption is directly related with income, education, taste and preference, cultural, ethical and etc. Food consumption patterns of rural Tamil Nadu shows that high demand of Public Distribution System (PDS) observed in earlier and gradually decreased over year. Vitamin Thiamine is coming under severe inequality category in rural areas of Tamil Nadu for both 61st and 68 rounds. Goal programming was effectively optimised the nutrient requirement with least cost and optimised to higher level of nutrient status.

scholarly journals Assessment of Available Micronutrients Status in the Soils of Melur Block, Madurai District, Tamil Nadu, Using GIS and GPS Techniques

2021 ◽  
pp. 108-116
Author(s):  
P. Ramamoorthy ◽  
P. Christy Nirmala Mary ◽  
P. Saravanapandian ◽  
A. Gurusamy ◽  
K. Kumutha
Keyword(s):  
Tamil Nadu ◽  
Nutrient Status ◽  
Micronutrient Deficiency ◽  
Soil Samples ◽  
Zn Deficiency ◽  
Soil Resource ◽  
And Zn Deficiency ◽  
Standard Procedures ◽  
Resource Inventory ◽  
Critical Limits

A soil resource inventory was conducted at village level in the Melur block of Madurai district, Tamil Nadu to assess the micronutrients status in the soils and to prepare fertility maps depicting the extent of soil micronutrient deficiency/sufficiency using GIS and GPS techniques. Soil samples were collected at revenue village wise along with geo coordinates and analysed for available micronutrients such as Zn, Fe, Cu and Mn by adopting standard procedures. Based on the nutrient status, the soils were grouped as deficient or sufficient using the critical limits. Per cent deficiency of micronutrients in Melur block was worked out and the thematic maps showing status of different available micronutrients were generated. The results indicated that, Fe and Zn  deficiency is most prevalent in the soils of Melur block  in Madurai district to an extent of more than 35 per cent, followed by Cu (1.1%) and Mn (10%).

Boron Fertilization and Its Fate: Maize - Sunflower Cropping System

2017 ◽  
Vol 104 (4 - 6) ◽  
Author(s):  
Jegadeeswari D ◽  
◽  
Muthumanickam D
Keyword(s):  
Seed Yield ◽  
Tamil Nadu ◽  
Crop Yields ◽  
Cropping System ◽  
Maize Yield ◽  
Residual Fraction ◽  
Continuous Cropping ◽  
Maize Crop ◽  
Stover Yield ◽  
Stalk Yield

A field experiment was conducted in B deficient soil (0.37 mg kg-1) to assess the frequency and level of B application for increasing crop yields in maize - sunflower cropping system, fate of B pools in soils system and to monitor the changes in soil fertility and productivity due to different levels and frequency of B application under continuous cropping system at Tamil Nadu Agricultural University, Coimbatore since 2012. The analysis of initial soil samples indicated that experimental soil was neutral in soil pH and free from salinity with sandy clay in texture. The grain and stover yield of maize crop varied from 5.51-8.38 and 5.16 to 8.00 t ha-1 , respectively and significantly differed with rate of B application. Among the B levels application of B @ 1.0 kg ha-1 registered the maximum grain and stover yield of 7.55 and 7.00 t ha-1 , respectively and was followed by application of 1.5 kg ha-1, however they were on par with each other. After the harvest of maize crop, sunflower was raised and harvested and the grain and stalk yields were recorded. Among the B levels, application of B @ 1.0 kg ha-1 registered the maximum seed yield of 2.33 t ha-1 respectively and was followed by application of 0.5 kg ha-1. The interaction between the rate of B application and frequency significantly differed with grain and stalk yield. Among the frequency levels, application of B to maize crop alone every year (F3) registered the maximum seed yield as compared to others. The interaction effect revealed that application of B @ 0.5 kg ha-1 to all crop registered the highest seed yield of 2.79 t ha-1 respectively. Boron fractions like available boron, specifically adsorbed B, oxide B, organically bound B, residual B status and total boron contents were analysed after the harvest of second crop. The results revealed that the available B status varied from 0.277 to 1.940 mg kg-1,specifically adsorbed B ranged from 0.190 to 1.332,oxide bound B status in soil varied from 0.127 to 0.89 mg kg-1, organically bound B status in soil varied from 0.235 to 1.644 mg kg-1, residual fraction of B varied from 41.61 to 291.8 and total boron varied from 42.44 to 297.6 mg kg-1. Boron application resulted in significant increase in maize yield as first crop and sunflower as residual crop, respectively. Among the B fractions the order was residual B >organically bound > specifically adsorbed > oxide bound B. Application of B @ 2.0 kg ha-1 significantly registered the highest available B in soil (1.038 mg kg-1) and among the frequencies, application of B to all crops registered the highest available B (1.32 mg kg-1). The actual fraction of B fertilizer removed by the crops is only 1-2 % of the total applied fertilizer through soil.

scholarly journals Effect of growth regulator and chemicals on leaf nutrient status in Tamarind plantation at Dharmapuri district of Tamil Nadu

2017 ◽  
Vol 12 (Special-2) ◽  
pp. 520-523
Author(s):  
C.N. HARI PRASATH ◽  
A. BALASUBRAMANIAN ◽  
S. RADHAKRISHNAN ◽  
A. MAYAVEL
Keyword(s):  
Growth Regulator ◽  
Tamil Nadu ◽  
Nutrient Status

Effect of drip fertigation on nutrient uptake and seed yield of pigeonpea [Cajanus cajan (L.) Millsp.] under westeren agroclimatic zones of tamil nadu

2016 ◽  
Author(s):  
Vimalendran Loganathan ◽  
K. R. Latha
Keyword(s):  
Nutrient Uptake ◽  
Seed Yield ◽  
Tamil Nadu ◽  
Field Experiments ◽  
Water Soluble ◽  
Surface Irrigation ◽  
Agricultural College ◽  
Phosphorus And Potassium ◽  
Soluble Fertilizer ◽  
Nitrogen Phosphorus

Field experiments were conducted at Agricultural College and Research Institute, Coimbatore during August to February of 2011-12 and 2012-13 to study the effect of drip irrigation, fertigation levels and frequencies on seed yield and nutrient uptake of pigeonpea. Three fertilizer levels (75 %, 100 % and 125 % recommended dose fertilizer (RDF) through water soluble fertilizer and conventional fertilizers), three irrigation levels (50 % computed water requirement of crop (WRc), 75 % WRc and 100 % WRc) and surface irrigation (IW/CPE ratio 0.6 with 100 per cent RDF through conventional fertilizer) were included as treatments in this study. Application of 100 per cent of RDF (WSF) once in 7 days along with 100 % WRc (T9) recorded significantly higher uptake of total nitrogen, phosphorus and potassium. The lowest plant nutrient uptake was recorded by surface irrigation with application of 100 % RDF (T14) applied as basal. The results revealed that application of nutrients through fertigation once in seven days with 125 % RDF (WSF) + irrigation 100 % WRc recorded higher total nutrient uptake (nitrogen, phosphorus and potassium) than surface irrigation with conventional fertilizer.

Effect of spacing and fertilizer level on yield attributes of Dhaincha (Sesbania aculeata)

2017 ◽  
Author(s):  
P. Rajesh ◽  
J. Sundersingh Rajapandian ◽  
K. Sharmili ◽  
S. Marimuthu ◽  
R. SureshKumar
Keyword(s):  
Field Experiment ◽  
Seed Yield ◽  
Tamil Nadu ◽  
Yield Attributes ◽  
Sesbania Aculeata ◽  
Agricultural College ◽  
Farm Unit ◽  
And Control ◽  
Pod Length ◽  
Number Of Seeds

A field experiment was conducted at Central Farm Unit situated in Agricultural College and Research Institute, Tamil Nadu Agricultural University, Killikulam during Rabi 2011-12 to evaluate the effect of spacing (120×30cm, 120×20 cm, 90×30 cm and 90×20 cm) and fertilizer levels (12.5:25:12.5, 18.75:37.5:18.75, 25:50:25, 31.25:62.5:31.25 kg N, P2O5, K2O/ha and control) on yield attributes of Dhaincha. The results revealed that spacing adopted with 120×30 cm significantly recorded higher number of pods/plant (53.7), pod length (19.94 cm), number of seeds/pod (28.52) and seed yield (585 kg/ha) of Dhaincha. In respect of different fertilizer levels, application NPK @ 31.25:62.5:31.25 kg/ha perceived higher yield attributes (number of pods/plant (48.8), pod length (17.98), number of seeds/ pod (29.28) and seed yield (609 kg/ha). Combination of spacing (120×30 cm) with fertilizer levels of 31.25:62.5:31.25 kg/ha significantly recorded higher seed yield of 705 kg/ha.

Effects of cypermethrin + dimethoate and extracts of Piper guineense and Azadirachta indica on the pests and yield of cowpea, Vigna unguiculata

1990 ◽  
Vol 115 (2) ◽  
pp. 227-231 ◽  
Author(s):  
M. F. Ivbijaro ◽  
O. O. Bolaji
Keyword(s):  
Seed Yield ◽  
Azadirachta Indica ◽  
Field Trials ◽  
Maruca Testulalis ◽  
Population Densities ◽  
Megalurothrips Sjostedti ◽  
Piper Guineense ◽  
Oil Extract ◽  
The University ◽  
Pod Sucking Bugs

SUMMARYField trials were conducted in 1988 at the University of Ibadan to determine the effects of cypermethrin + dimethoate (Sherpa Plus®), the oil extract from ripe seeds of Piper guineense Schum & Thonn and the aqueous extract of ripe seeds of Azadirachta indica A. Juss on the pests and yield of cowpea. Cypermethrin + dimethoate was consistently superior to all other treatments in substantially reducing the population densities of Megalurothrips sjostedti Trybom and of Maruca testulalis Geyer, which are serious pests on flowers and buds, and in reducing the densities of four pod-sucking bugs. Pest population densities were also reduced by foliar sprays with A. indica or P. guineense extracts.Seed yield after treatment with cypermethrin + dimethoate was 0·99 t/ha, more than double the yield from other treatments. A marginal increase in seed yield compared with the control was achieved by foliar spraying with A. indica extract.

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