Archive | November 2016

Evaluation of some growth indices on vegetative and reproductive stage of rice cultivars under nitrogen fertilizer management

Maral Moraditochaee, Ebrahim Azarpour, Hamid Reza Bozorgi

Department of Agriculture, College of Agricultural Science, Takestan Branch, Islamic Azad University, Takestan, Iran

Young Researchers and Elite Club, Rasht Branch, Islamic Azad University, Rasht, Iran

Key words: Rice, nitrogen, cultivar, growth indices.

golden-riceAbstract

In order to study the effects of nitrogen fertilizer on some growth indices of rice cultivars (Oryza sativa L.), an experiment as factorial in RCBD with three replications was conducted during 2009 year in the Rice Research Institute, Iran, Rasht, central of Guilan and Rudsar, East of Guilan. Factors were cultivar (V1= Hashemi, V2= Ali Kazemi and V3= Khazar), and nitrogen fertilizer levels (N1= 0, N2= 30, N3=60, and N4= 90 Kg N/ha). Characters measured were: leaf area index (LAI), leaf dry weight (LDW), Total of dry weight (TDW), Crop growth rate (CGR), net assimilation rate (NAR) and grain yield. Growth parameters were calculated during two growth stages tillering and flowering by harvesting samples in all treatments. Results of growth analysis indicated that, nitrogen increasing rates of fertilizer caused the increment of growth indexes in comparison with don’t application fertilizer, highest these growth indexes were obtained in N4 treatment. Among of rice cultivars, Khazar showed higher growth indices rather than Ali Kazemi and Hashemi.

Get the original article sin Source: Volume 4, Number 2, February 2014 – JBES

Published By: Journal of Biodiversity and Environmental Sciences (JBES)

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Field evaluation of compost extracts for suppression of Fusarium wilt of tomato caused by Fusarium oxysporum F. sp. lycopersici

0529S.G Haruna, S.A. Adebitan, A.U. Gurama

Department of Horticultural Technology, Federal College of Horticulture, P. M. B. 108, Dadin Kowa, Gombe State, Nigeria

School of Agriculture and Agricultural Technology, Abubakar Tafawa, Balewa University, P.M.B. 0248, Bauchi State, Nigeria

Key words: Solanum lycopersicum, disease severity, soil-drenching, bio-control.

Abstract

Field experiment was conducted at Research and Training Farm of Federal College of Horticulture Dadin Kowa, in the 2008 to 2009 cropping seasons, to evaluate the effect of compost extracts in suppressing Fusarium wilt on three tomato varieties. The treatments consisted of three compost extracts: poultry manure-based compost extract (PMCE), neem leaf-based compost extract (NLCE), cow dung-based compost extract (CDCE), a synthetic fungicide (TEAM®) and sterile distilled water serving as the control; and three tomato varieties (Roma VF, Duck Sekarat and UC 82B). The results showed that all tomato varieties were infected by the pathogen, but Roma VF was the least infected. tumblr_m9n49xovok1rvc40iDisease incidence and severity was significantly (P≤0.05) lower on tomato plants treated with the respective compost extract than on untreated plants. TEAM® was only effective at the early stages of infection compared to the various extracts which were effective starting from 6 – 7 weeks after transplanting till harvesting. However, poultry and cow dung based- compost extracts were the most effective in reducing incidence and severity of the disease. Higher yields were obtained with the application of PMCE (3.2 t ha-1) and CDCE (3.0 t ha-1) in comparism with other treatments. It is therefore recommended that farmers should use Roma VF and soil drenching with PMCE and/or CDCE in an integrated pest management package in the control of Fusarium wilt of tomato.

Get the original articles in Source: Volume 2, Number 4, April 2012 – IJAAR

Published By: International Journal of Agronomy and Agricultural Research (IJAAR)

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C – reactive protein in relation to fasting glucose levels in obese or overweight men

Torabi Mohsen, BagheryHadi, Falah Ahmad

Department of Physical Education and Sport Science, Shahre Rey Branch, Islamic Azad University, Tehran, Iran

Key words: C-reactive protein, obesity, inflammation, glucose concentration.

wpid-photo-20140921095252Abstract

C-reactive protein (CRP) as an inflammatory cytokine is associated with insulin resistance, obesity and type II diabetes. The purpose of this study was to examine the relation of CRP to glucose concentration in adult obese or overweight men and to compare this inflammatory cytokine between normal weight and obese or overweight men. Participants included fourteen non athletes sedentary overweight or obese (30 ≤ BMI ≤ 36) and ten normal weight (20 ≤ BMI ≤ 26) men aged 34 – 41 year. Fasting blood samples were taken after an overnight fast to determine glucose, insulin, and C – reactive protein in two groups. Independent T test used to compare al variables between two groups and Pearson correlation method was used to relation between them. Fasting serum CRP concentrations were higher in obese or overweight subjects than in normal weight men (2205 +/- 805 versus 375 +/- 181 ng/ml, P = 0.005). Serum CRP was positively related with glucose concentration in obese group (p = 0.001, r = 0.77). Based on these finding, we can say serum CRP affect directly glucose concentration in obese individuals.

Get the original articles in Source: Volume 4, Number 1, January 2014 – JBES

Published By: Journal of Biodiversity and Environmental Sciences (JBES)

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Effect of blending speed on efficiency and consistency of a grains drink processing machine

Agidi Gbabo, Ibrahim Mohammed Gana, Solomon Musa Dauda

Engineering Division, National Cereals Research Institute, Badeggi – Bida, Nigeria

Department of Engineering, Agricultural Development Project, Minna, Nigeria

Department of Biological and Agricultural Engineering, Universiti Putra, 43400 UPM Serdang, Malaysia

Key words: Blending speed, consistency, drink extraction, efficiency and grains drink.

477841677Abstract

The effect of Blending speed on blending efficiency and consistency of drink produced from a Grains drink processing machine was studied. Three grain types of two varieties each for maize (zea mays), soybean (glycine max) and guinea corn (sorghum bicolor) were blended at speeds of 1400 r.p.m, 1300 r.p.m, 1000 r.p.m and 800 r.p.m using vertical- horizontal blade assembly. The drinks from the grains were also extracted by centrifugal separation using the same machine and the blending efficiency and drink consistency were analyzed. The result obtained showed that blending speed of 1400 r. p. m had the highest blending efficiency of 79.48% and consistency of 89.6% on dehulled white maize when blended for 600 seconds while blending speed of 800 r.p.m had the least blending efficiency and consistency of 20.03% and 24.5% respectively on dehulled yellow maize for the same blending time interval of 600 seconds. The development of this machine would solve the on-demand of automated production of grain drinks in the food industry.

Get the original articles in Source: Volume 2, Number 4, April 2012 – IJAAR

Published By: International Journal of Agronomy and Agricultural Research (IJAAR)

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Productivity of wheat/faba bean intercropping systems in response to sulphur fertilization and seed rate under contrasting management conditions

Ibrahim Yahuza

Crops Research Unit, Department of Agriculture, the University of Reading, RG6 6AR, Berkshire, United Kingdom

Key words: Sulphur fertilization, wheat seed rate, wheat/faba bean intercrop, conventional system, organic system.

1-bj3b00udw-lrz_tks-mwowAbstract

Two field experiments carried out in contrasting production system (conventional versus organic) investigated the effects of sulphur (S) fertilization and wheat seed rate in wheat/faba bean (bean) intercropping system. For the conventional experiment, S fertilization reduced wheat seed yields and biomass yields substantially. Maximum wheat seed yields were 278 g/m2 and 391 g/m2 for S applied and S withheld respectively. On the other hand, at 200 wheat seeds/m2 application of S significantly increased bean intercrop seed yield. Bean seed yields were 195.8 g/m2 and 81.9 g/m2 for S and without S respectively. For the seed yield, based on crop performance ratio (CPR), wheat in the intercrop was more efficient than the sole crop only at 200 wheat seeds/m2 when S was withheld as indicated by CPR value of 1.11. The maximum CPR for the bean of 1.87 was obtained at 200 wheat seeds/m2 when S was applied. For both wheat and bean, application of S had no substantial effects on harvest index. Whilst application of S had a positive effects on accumulated photosynthetically active radiation by the intercrop, radiation use efficiency was conservative in response to S fertilization. For the conventional experiment, it was concluded that bean competed with the wheat intensely for S than for N leading to higher yields for the bean when S was applied than when S was withheld. Hence, wheat intercrop seed yields were substantially reduced when S was applied. By contrast, in the organic experiment, S fertilization had no significant effects on the above-mentioned variables.

Get the original articles in Source: Volume 2, Number 3, March 2012 – IJAAR

Published By: International Journal of Agronomy and Agricultural Research (IJAAR)

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