Evolving appropriate zinc fertilization strategy for rice-rice (Oryza sativa) cropping system in Cauvery Delta Zone

2019 ◽  
Vol 56 (3) ◽  
pp. 294-304
Author(s):  
C Sharmila Rahale
Keyword(s):  
Oryza Sativa ◽  
Tamil Nadu ◽  
Field Experiments ◽  
Foliar Spray ◽  
Cropping System ◽  
Green Leaf ◽  
Farm Yard Manure ◽  
Zinc Fertilization ◽  
Initiation Stage ◽  
Cauvery Delta

Six field experiments were conducted at Tamil Nadu Rice Research Institute, Aduthurai to evolve suitable zinc fertilization method for rice - rice (Oryza sativa L.) cropping system in Cauvery delta zone. The treatment includes: T1 : Control, T2 : 100 g zinc sulphate (ZnSO4)/cent in nursery alone., T3 : root dipping alone in 2 % zinc oxide (ZnO) solution, T4 : 25 kg ZnSO4 ha-1, T5 : 37.5 kg ZnSO4 ha-1, T6 : 25 kg ZnSO4 ha-1+ Farm Yard Manure (FYM) 12.5 t ha-1, T7 : 25 kg ZnSO4 ha-1 + Green Leaf Manure (GLM) 6.5 t ha-1, T8 : Tamil Nadu Agricultural University Micro Nutrient (TNAU MN) mixture 25 kg ha-1 as Enriched Farm Yard Manure (EFYM), T9 : TNAU MN mixture 37.5 kg ha-1 as EFYM, T10 : Foliar spray of 0.5% ZnSO4 + 1 % urea at tillering and panicle initiation stage, T11 : 100g ZnSO4 /cent in nursery alone + Foliar spray of 0.5 % ZnSO4 + 1 % urea at tillering and panicle initiation stage (T2+ T10), T12 : root dipping alone in 2 % ZnO solution + Foliar spray of 0.5 % ZnSO4 + 1 % urea at tillering and panicle initiation stage (T3 + T10), T13: 100 g ZnSO4 /cent in nursery alone + root dipping alone in 2 % ZnO solution + Foliar spray of 0.5 % ZnSO4 + 1 % urea at tillering and panicle initiation stage (T2 + T3 + T10). The treatments T5, T6, T7 and T9 were skipped in rabi season to know the residual effect of these treatments in the subsequent season. Among the treatment combinations, application of 25 kg ZnSO4 ha-1 + FYM 12.5 t ha-1 recorded higher grain yield in both kharif (6232 kg ha-1) and rabi (6236 kg ha-1) seasons. The same treatment combination recorded higher Zn content and Zn uptake as well. Regarding soil nutrient content, the same treatment recorded higher N, P and K content. This treatment was followed by application of 25 kg ZnSO4 ha-1 + green leaf manure 6.5 t ha-1. The experimental findings suggested that combination of organic and inorganic sources not only increased the yield but also improves soil health in Cauvery delta zone.

scholarly journals Effect of seaweed extract on rice (Oryza sativa var. ADT53) productivity and soil fertility in Cauvery delta zone of Tamil Nadu, India

2021 ◽  
Vol 13 (3) ◽  
pp. 1111-1120
Author(s):  
P. Deepana ◽  
K. Sathiya Bama ◽  
P. Santhy ◽  
T. Sivasankari Devi
Keyword(s):  
Oryza Sativa ◽  
Soil Fertility ◽  
Tamil Nadu ◽  
Foliar Spray ◽  
Crop Productivity ◽  
Seaweed Extract ◽  
Higher Plant ◽  
Yield Attributes ◽  
Soil Application ◽  
Cauvery Delta

The monocropping of rice in the Deltaic zone deteriorates soil health and crop productivity. Seaweeds are marine resources easily available at negligible cost and also rich in bioactive compounds. A field experiment was conducted at Cauvery Delta zone of Tamil Nadu during summer season2021 to evaluate the bio-efficacy of Seaweed extract on growth, yield, and soil properties of rice, Oryza sativa var. ADT53. The experiment was framed in RBD comprising of 12 treatments viz., soil application of Seaweed extract(SWE) @ 12.5kg/ha,25kg/ha, 37.5kg/ha , foliar spraying of SWE gel & liquid @ 0.5% twice at tillering and panicle initiation stages, a combination of soil application and foliar spray and fertilizer alone. Experimental findings revealed that the soil application of SWE  @ 12.5kg/ha along with a foliar spray of seaweed liquid recorded higher plant height (121.1cm),dry matter production (11390kg/ha),yield attributes viz., number of grains per panicle (166), panicle length (21.8 cm), thousand grain weight (14.7g), number of productive tillers per m2 (275), grain yield (5612 kg/ha)and straw yield (7829 kg/ha). However, The soil application of SWE @ 25kg/ha recorded higher soil available nutrients viz.,N(260 kg/ha);P(42kg/ha); K(170kg/ha);Ca(27.7meq/100g); Mg(5.5meq/100g);S(18.2mg/kg);Zn (1.17ppm); Fe (33.82ppm); Cu(1.61ppm);Mn(18.97ppm).The study will help sustain rice productivity and soil fertility in the deltaic zone of Tamil Nadu. The soil application of seaweed extract @ 12.5kg/ha along with foliar spraying (0.5% twice) could be a promising option in the rice ecosystem.

Effect of silicon at panicle initiation on the growth of rice (Var. ADT-36) plants at different growth stages

2002 ◽  
Vol 50 (2) ◽  
pp. 179-184
Author(s):  
P. M. Arthanari ◽  
P. Gnanamoorthy ◽  
S. Ramasamy
Keyword(s):  
Tamil Nadu ◽  
Dry Matter ◽  
Field Experiments ◽  
Dry Matter Production ◽  
Growth Stages ◽  
Maturity Stage ◽  
Maturity Stages ◽  
Matter Production ◽  
Initiation Stage ◽  
Different Growth Stages

Field experiments were conducted at Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India during the Rabi (November 1997-March 1998) and Kharif (July 1998-November 1998) seasons to identify the effect of silicon at panicle initiation on the growth of rice plant (Variety ADT-36) at different growth stages. Furnace slag was applied as a silicon source at 2 t/ha at the panicle initiation stage along with other nutrients. The dry matter production was recorded at the active tillering, panicle initiation, booting, flowering, one week after flowering and maturity stages in both the seasons. The total dry matter production was greater in the Kharif season than in the Rabi season. The application of slag at the panicle initiation stage along with N and K at the flowering stage had a significant influence over the dry matter production. A similar trend was observed in both the seasons. The silicon uptake was recorded at the panicle initiation and maturity stages. About 30-40% of the silicon absorbed during the early stages and the maturity stage was present in the shoot, whereas 20-30 % of the silicon absorbed during the maturity stages was present in the leaf blades. Based on the results, it is concluded that the supply of silicon during the panicle initiation stage is most important for plant growth.

scholarly journals Osmolyte-induced water deficit stress mitigation during panicle initiation stage in transplanted rice (Oryza sativa L.)

2022 ◽  
Vol 9 (1) ◽  
pp. 9-20
Author(s):  
Md. Nurjamal Islam ◽  
Abdul Awal Chowdhury Masud ◽  
Md. Mahabub Alam ◽  
Md. Nurnabi Islam ◽  
Mohammed Lutfur Rahman ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Water Deficit ◽  
Oryza Sativa L ◽  
Foliar Spray ◽  
Growth And Yield ◽  
Water Deficit Stress ◽  
Transplanted Rice ◽  
Water Stress Condition ◽  
Four Levels ◽  
Initiation Stage

A field experiment was conducted to observe the osmolyte-induced water deficit stress mitigation during the panicle initiation stage in transplanted rice (Oryza sativa L. cv. BRRI dhan72). At the panicle initiation stage, plants were simulated with four levels of water regimes viz., well-irrigated (D0), water deficit for 5 d (D1), 10 d (D2) and 15 d (D3). Plants were treated with or without 10 mM of proline (Pro) and trehalose (Tre) as foliar spray started at mid-vegetative stage and continued till the end of stress period. Results revealed that water deficit stress drastically reduced most of the plant morpho-physiological attributes while other yield contributing characters were also affected due to prolonged water deficit stress. However, exogenous application of osmolytes like Pro and Tre significantly increased all those morphological, physiological and yield contributing parameters. Foliar addition of osmolytes concomitantly decreased the number of non-effective tillers hill-1 and the number of unfilled grain panicle-1 under water stress condition. Although both the osmolytes performed well under multiple duration of drought stress, the application of 10 mM Pro markedly improved all growth and yield contributing parameters under D1 water deficit stress compared to other stress durations. Hence, it may be concluded that the use of osmolytes would be a prospective remedy against moderate water deficit stress in transplanted rice production.

scholarly journals Integrated nutrient management on weed dynamics of cotton based cropping systems in South India

2014 ◽  
Vol 11 (1) ◽  
pp. 7-22 ◽  
Author(s):  
S Marimuthu ◽  
P Subbian
Keyword(s):  
Tamil Nadu ◽  
Dry Matter ◽  
Field Experiments ◽  
Cropping Systems ◽  
Cropping System ◽  
Weed Suppression ◽  
Dry Matter Production ◽  
Weed Population ◽  
Matter Production ◽  
Equivalent Yield

Field experiments were conducted at the farm of Tamil Nadu Agricultural University, Coimbatore, India during 2007 and 2008 to assess the weed population, dry matter production, weed smothering efficiency and yield of seed cotton in a cotton based cropping system with conjunctive use of NPK and bioinoculants. Cotton intercropped with Sesbania along with application of Azospirillum and Pseudomonas recorded the lowest weed population and weed dry matter production. The maximum weed suppression of 54.5 and 44% was observed in cotton + Sesbania system as compared to pure crop of cotton during both the years. The maximum cotton equivalent yield of 2052 and 1895 kg ha-1 was recorded in cotton + onion system which was at par with cotton + Sesbania system with cotton equivalent yield of 2010 and 1894 kg ha-1 during 2007 and 2008, respectively. Combined application of 100 % recommended dose of NPK and bioinoculants recorded maximum cotton equivalent yield of 2460 and 2190 kg ha-1 during 2007 and 2008, respectively. DOI: http://dx.doi.org/10.3329/sja.v11i1.18371 SAARC J. Agri., 11(1): 7-22 (2013)

Evaluation of boron fertilizers for a sunflower (Helianthus annuus L.) - green gram (Vigna radiata L) cropping sequence in Inceptisols

2002 ◽  
Vol 50 (2) ◽  
pp. 163-168 ◽  
Author(s):  
A. Renukadevi ◽  
P. Savithri ◽  
K. Andi
Keyword(s):  
Tamil Nadu ◽  
Field Experiments ◽  
Agricultural Research ◽  
Foliar Spray ◽  
Residual Effect ◽  
Green Gram ◽  
Research Station ◽  
Soil Application ◽  
Main Crop ◽  
B Uptake

Field experiments were conducted at the Agricultural Research Station, Bhavanisagar, Tamil Nadu, India during 1999 to 2000 in Inceptisols to evaluate boron fertilizers (borax, boric acid, Agribor) and to assess the effect of the mode and level of B application on the total B uptake and yield of sunflower and green gram. The experimental field was found to be deficient in available B (0.35 mg kg-1). Sunflower was raised as the main crop. Different B levels (0.5, 1.0, 1.5and 2.0 kg B ha-1)as soil application and two levels of foliar spray (0.2% and 0.3%) were compared with the control. The treatments were superimposed on the recommended dose of NPK. After harvestingthe main crop of sunflower, the residual effect of B was studied by raising green gram on the same field. The results revealed that the application of all the levels of B resulted in a significant increase in the B uptake and yield of sunflower as compared to the control. The highest yield was recorded for the soil application of B at a rate of 2.0 kg ha-1. The yield increase of sunflower was 3.6 to 15.8% and 7.2 to 18.9% over the control for seed and stalk, respectively. The green gram grain yield increased by 4.2 to 13.5% after the application of 1.0 and 2.0 kg B ha-1 to the main crop. No residual effect was observed for the lowest level of B application (0.5 kg ha-1). Agribor is equally as effective as borax in influencing the B nutrition of both the crops.

scholarly journals Influence of nitrogen application on direct seeded rice in old and new Cauvery Delta zone of Tamil Nadu, India

2021 ◽  
Vol 13 (4) ◽  
pp. 1462-1469
Author(s):  
K. Sathiya Bama ◽  
K. R. Babu ◽  
R. Sharmila ◽  
A. Anuradha
Keyword(s):  
Grain Yield ◽  
Tamil Nadu ◽  
Field Experiments ◽  
Agricultural Research ◽  
Research Station ◽  
Nitrogen Application ◽  
Water Release ◽  
N Application ◽  
Direct Seeded ◽  
Cauvery Delta

Direct seeded rice is a boon to farmers where the water release from the reservoir is delayed. Nitrogen fertiliser management is one of the strategies bto rectify the nutrient-related issue in Direct seeded rice. The present study aimed to optimize the nitrogen dose for direct-seeded rice in the new and old Cauvery delta zone of Tamil Nadu. Field experiments were conducted during kuruvai and samba seasons at Tamil Nadu Rice Research Institute, Aduthurai and Agricultural research station Thanjavur representing old and new Cauvery delta regions during 2019-20 and 2020-21. Totally from eight experiments, the results of four field experiments in each location revealed the highest grain yield in the treatment T6 -application of 150 kg Nha-1 (5596kg/ha) which was statistically on par with treatment T5 -125kg N/ha (5326 kg/ha) in old delta and new delta. The higher grain yield was recorded in the T6 (5140 kg/ha), statistically on par with T5 (4550 kg/ha). The higher available nitrogen content of 312 kg/ ha,292 kg/ha was recorded for N application @ 150kg/ha, which was statistically on par with  309 kg/ha and 289 kg/ha, respectively, both the kuruvai and samba seasons for N application of 125 kg/ha. In the new CDZ, the same trend was followed as that of the old delta. Based on economics, N applied @125 kg/ha recorded a higher BC ratio for direct-seeded rice. For the benefit of farmers of both deltaic regions, the nitrogen application of 125 kg ha-1 for direct-seeded rice is recommended.

scholarly journals Enhancement of agronomic traits and yield of rice var. ADT 43 grown in typic ustifluvent soil through silicon fertilization

2021 ◽  
Vol 13 (3) ◽  
pp. 1052-1058
Author(s):  
Arthi V ◽  
M. V. Sriramachandrasekharan ◽  
R. Manivannan ◽  
Arumugam Shakila
Keyword(s):  
Tamil Nadu ◽  
Agronomic Traits ◽  
Foliar Application ◽  
Rice Yield ◽  
Foliar Spray ◽  
Potassium Silicate ◽  
Growth And Yield ◽  
Agronomic Characters ◽  
Soil Application ◽  
Initiation Stage

Rice is a rich accumulator of silicon and its supply is essential for the growth and economic yield of rice. Hence, a field experiment was conducted in sandy clay loam soil belonging to Padugai series (Typic ustifluvent) at farmers holding in Kuttalam block, Mayiladuthurai district, Tamil Nadu to assess the role of silicon in improving agronomic characters and yield of rice ADT 43, Oryza sativa. The treatments included  T1 -  Recommended dose of fertilizer (RDF), T2 - RDF + Potassium silicate (FS) - 0.25%, T3- RDF + FS - 0.50%, T4 - RDF +FS - 1.00%, T5­ -RDF + FS - 0.25%, T6 - RDF + FS - 0.50%,  T7­ - RDF + FS - 1.00%,  T8 - RDF + SA - 50 kg ha-1, T9 - RDF + SA - 100 kg ha-1 and T10 - RDF + SA- 150 kg ha-1. From T2 to T4, the foliar spray was done at tillering stage and from T5 to T7, the foliar spray was done at tillering and panicle initiation stage.  The silicon was applied through FS with the rice crop. The soil application of silicon relatively recorded higher growth and yield compared to foliar application. Besides improving different agronomic characters of the rice, the soil application of 50 kg Si ha-1 registered the highest grain yield (6183.3 kg ha-1) and straw yield (6740 kg ha-1) and was comparable with a single foliar spray of 1% Si.  Growth and rice yield increased with Si concentration of 0.25% to 1%.  Thus, the soil application of silicon @50 kg ha-1 through potassium silicate is advocated to realize maximum rice yield.

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