scholarly journals Efficacy of Fungicides Against Grain Discoloration Disease of Rice

2020 ◽  
Vol 7 (2) ◽  
pp. 073-076
Author(s):  
V. A. Patil ◽  
◽  
P. B. Patel ◽  
P. D. Ghoghari ◽  
N. K. Kavad ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Field Experiment ◽  
Oryza Sativa L ◽  
Fungal Disease ◽  
Field Conditions ◽  
Maturity Stage ◽  
Rice Grain ◽  
New Combinations ◽  
Cereal Crop

Rice (Oryza sativa L.) is one of the important cereal crop grown extensively in Gujarat. It suffers from grain discoloration fungal disease causing heavy losses at maturity stage of rice. A field experiment was laid out with the single and new combinations fungicides against rice grain discoloration disease under field conditions during kharif-2013-14, 2014-15 and 2015-16. Six fungicides at various concentrations were screened against rice grain discoloration disease. The trifloxystrobin 25% + tebuconazole 50% (0.03 %) @ 0.4 g l-1 and propiconazole 25 EC (0.025 %) @ 1.0 ml l-1 was found effective against rice grain discoloration and recorded significantly higher healthy grains.

scholarly journals Organic Fertilizer Titonia Plus and Micro Nutrients Improved Rice (Oryza sativa L.) Production in Koto Panjang and Koto Tingga, Padang City, West Sumatera, Indonesia

2020 ◽  
Vol 7 (01) ◽  
pp. 22-27
Author(s):  
Nalwida Rozen ◽  
Gusnidar Gusnidar ◽  
Nurhajati Hakim
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Oryza Sativa L ◽  
Block Design ◽  
Organic Fertilizer ◽  
Chemical Fertilizer ◽  
Rice Grain ◽  
Randomized Block Design ◽  
On Farm

A series of on-farm fi eld experiments were conducted in two locations in Padang, Koto Panjang and Koto Tingga, West Sumatera, Indonesia in 2015. The purpose of the experiment was to establish the formula of organic fertilizer derived from Tithonia supplied with micro nutrients, Zn and Mn, on rice. The experiments were conducted using completely-randomized block design with six treatments and three replications. The treatments were P = Tithonia Organic Fertilizer Plus (TOFP) + 3.0 kg Mn.ha-1, Q = TOFP + 3.0 kg Mn.ha-1+ 3.0 kg Zn.ha-1, R = TOFP + 4.5 kg Mn.ha-1 + 6 kg Zn.ha-1, S= TOFP + 4.5 kg Mn.ha-1+ 9 kg Zn.ha-1, T = TOFP only, U = 100% chemical fertilizer only. Treatment with micro nutrients as addition to TOFP (TOFP+ 3.0 kg Mn.ha-1 and TOFP+ 3.0 kg Mn.ha-1+3.0 kg Zn.ha-1) increased rice grain yield by 80 g per clump.

Foliar application of Zn can reduce Cd concentrations in rice (Oryza sativa L.) under field conditions

2018 ◽  
Vol 25 (29) ◽  
pp. 29287-29294 ◽  
Author(s):  
Hui Wang ◽  
Chao Xu ◽  
Zun-chang Luo ◽  
Han-hua Zhu ◽  
Shuai Wang ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Foliar Application ◽  
Oryza Sativa L ◽  
Field Conditions

scholarly journals Mechanical and Processing Properties of Rice Grains

2020 ◽  
Vol 12 (2) ◽  
pp. 552 ◽  
Author(s):  
Weronika Kruszelnicka ◽  
Andrzej Marczuk ◽  
Robert Kasner ◽  
Patrycja Bałdowska-Witos ◽  
Katarzyna Piotrowska ◽  
...  
Keyword(s):  
Grain Size ◽  
Oryza Sativa ◽  
Negative Correlation ◽  
Oryza Sativa L ◽  
Strength Properties ◽  
Rice Grain ◽  
Static Compression ◽  
Positive Correlation ◽  
Rice Grains ◽  
Processing Properties

Strength properties of grains have a significant impact on the energy demand of grinding mills. This paper presents the results of tests of strength and energy needed the for destruction of rice grains. The research aim was to experimentally determine mechanical and processing properties of the rice grains. The research problem was formulated in the form of questions: (1) what force and energy are needed to induce a rupture of rice grain of the Oryza sativa L. of long-grain variety? (2) what is the relationship between grain size and strength parameters and the energy of grinding rice grain of the species Oryza sativa L. long-grain variety? In order to find the answer to the problems posed, a static compression test of rice grains was done. The results indicate that the average forces needed to crush rice grain are 174.99 kg m·s−2, and the average energy is 28.03 mJ. There was no statistically significant relationship between the grain volume calculated based on the volumetric mass density Vρ and the crushing energy, nor between the volume Vρ and other strength properties of rice grains. In the case of Vs, a low negative correlation between strength σmin and a low positive correlation between the power inducing the first crack were found for the grain size related volume. A low negative correlation between the grain thickness a3, stresses σmin and work WFmax was found as well as a low positive correlation between thickness a3 and the force inducing the first crack Fmin.

Status of glycemic index of paddy rice grain (Oryza sativa L.) on infestation by storage pest Sitotroga cerealella

2020 ◽  
Vol 89 ◽  
pp. 101697
Author(s):  
Awadhesh Kumar ◽  
G. Basana Gowda ◽  
Rameswar Prasad Sah ◽  
Chandrasekhar Sahu ◽  
Monalisa Biswal ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Glycemic Index ◽  
Oryza Sativa L ◽  
Paddy Rice ◽  
Rice Grain ◽  
Sitotroga Cerealella ◽  
Storage Pest

scholarly journals NaCl and Na2SO4 Salinities Have Different Impact on Photosynthesis and Yield-Related Parameters in Rice (Oryza sativa L.)

Agronomy ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 864
Author(s):  
Willy Irakoze ◽  
Hermann Prodjinoto ◽  
Séverin Nijimbere ◽  
Gervais Rufyikiri ◽  
Stanley Lutts
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Net Photosynthesis ◽  
Maturity Stage ◽  
Comparative Effect ◽  
The Mean ◽  
Chloride Salinity ◽  
Nutrient Solutions ◽  
1000 Grain Weight ◽  
Intercellular Co2

To elucidate the comparative effect of chloride and sulfate salinities on photosynthesis and yield components in rice, plants of Oryza sativa (cv. I Kong Pao (salt-sensitive)) were exposed in nutrient solutions to 20 mM Na2SO4 or 40 mM NaCl (electrical conductivity of c.a. 4.30 dS m−1 for both solutions) from seedlings to maturity stage. Both types of salt induced a strong decrease in net photosynthesis (AN) at the seedling and tillering stages, while the intercellular CO2 concentrations (Ci) remained unaffected. Instantaneous transpiration (E) and stomatal conductance (gs) decreased at the tillering and seedling stages, respectively, only in plants exposed to NaCl. Chloride salinity also strongly decreased photosynthetic pigments, while no impact was detected in response to Na2SO4. All yield-related parameters were affected by salinities, but NaCl was significantly more deleterious than Na2SO4 for the mean number of tillers produced per plant, spikelets sterility and non-viable pollen percentage. In contrast, both types of salinity similarly impacted the percentage of fertile tillers and 1000-grain weight. At the grain level, more than 90% of toxic ions (Na+, excess of Cl− and S6+) accumulated in the hulls, thus preserving the internal part of the caryopses from toxic ion injuries.

Effect of LCC-based nitrogen application on growth and yieldof rice (Oryza sativa L.) varieties during dry season

2016 ◽  
Vol 51 (1) ◽  
Author(s):  
Shrabani Moharana ◽  
J.M. L. Gulati ◽  
S. N. Jena
Keyword(s):  
Oryza Sativa ◽  
Field Experiment ◽  
Grain Yield ◽  
Real Time ◽  
Oryza Sativa L ◽  
Threshold Value ◽  
Nitrogen Management ◽  
Nitrogen Application ◽  
Panicle Length ◽  
Straw Yield

Data from a field experiment on Real Time Nitrogen Management (RTNM) in rice revealed that variety Gobinda produced significantly the highest grain yield of 49.6 q ha-1 associated with long panicle (26.75 cm) bearing significantly the maximum number of filled grains panicle-1 (156.78) producing highest net return (Rs.33214.71), B-C ratio (1.83) and return per rupee invested (0.83). Application of nitrogen based on LCC threshold value 4 produced significantly the highest grain (52.6 q ha-1), straw yield (64.4 q ha-1), number of EBT m-2 (403.71), panicle length (25.43 cm) and 148.94 filled grain panicle-1. Variety x RTNM interaction was significant and variety Naveen and Gobinda produced significantly the highest yield of 55.4 and 58.2 q ha-1 at recommended of nitrogen whereas, Lalat and Hiranmayee responded to LCC threshold value 4 (N4) with grain yield of 50.4 and 52.1 q ha-1, respectively.

Finite Element Simulation of Rough Rice Kernel (Oryza sativa L.) cv. Fajer Drying

2008 ◽  
Vol 3 (1) ◽  
Author(s):  
Shahin Rafiee ◽  
Mahmoud Omid ◽  
Alireza Yadollahinia
Keyword(s):  
Finite Element ◽  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Moisture Distribution ◽  
Element Formulation ◽  
Rice Grain ◽  
Conductive Heat ◽  
Drying Time ◽  
Rough Rice ◽  
Grain Moisture

This study was conducted to present a mathematical model with numerical solutions to predict the mass distributions inside a cross sectional area of an individual Fajer variety of rough rice (Oryza Sativa L.) kernel as a function of drying time considering the effects of coupled heat and mass transfer processes. The modified Luikov's equation was used for the simulation of drying kinetics of a single rough rice grain. The applied drying models with simultaneous heat and mass diffusion in biological materials were developed by finite element method. A finite element formulation and solution of a set of nonlinear coupled conductive heat and diffusive moisture transfer equation to improve grain drying simulation of axisymmetric bodies is presented. Axisymmetric linear triangular elements with two degrees of freedom per node were used to discretize the rice grain. Moisture distribution inside the individual rough rice kernel was produced by the model. Good agreement was observed when the output of nonlinear model was compared to experimental data.

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