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Poteri urozhaja pri korrektirujushhem remonte mashiny i pri obsluzhivanii po sostojaniju pered tekhnologicheskojj operaciejj

100%

Shevchenko S.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2015

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tom 17

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nr 7

2

Issledovanie vlijanija dlitel'nosti vosstanovlenija mashiny na poteri produkcii rastenievodstva

84%

Shevchenko S.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2013

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tom 15

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nr 7

3

Measuring and modeling crop loss of wheat caused by Septoria leaf blotch in seven cultivars and lines in Iran

84%

Mojerlou S., Safaie N., Alizadeh A., Khelghatibana F.

Journal of Plant Protection Research

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2009

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tom 49

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nr 3

257-262

Septoria leaf blotch caused by Septoria tritici, is one of the most important diseases of wheat worldwide including Iran. To determine yield reduction caused by this disease in Golestan province, field experiments were carried out in randomized complete block design with four replications and five wheat cvs. Tajan, Zagros, Shiroodi, Koohdasht, Shanghai and two lines N-80-6 and N-80-19 at Gorgan Research Station. Artificial inoculation was performed using spore suspension at three growth stages (Zadoks scale) including tillering (GS 37), stem elongation (GS 45) and flag leaf opening (GS 53). Control plots were sprayed with water. In this study, the 1 000 kernel weight (TKW), grain yield and area under disease progress curve (AUDPC) during growth season were measured. Statistical analysis showed that the levels of yield reduction was different in various studied wheat cultivars and lines and was reduced by 30 to 50%. The highest losses were observed for cvs. Zagros and Tajan with 48.86% and 47.41% of grain yield reduction, respectively. There was a positive correlation between grain yield reduction and AUDPC. The results of crop loss modelling using integral and multiple point regression models showed that the integral model (L = 1230.91+1.37AUDPC) in which AUDPC and crop loss percentages were independent and dependent variables, respectively, could explain more than 95% of AUDPC variations in relation to crop loss in all cultivars in two years. In the study of integral model for each cultivar, cv. Shiroodi showed the highest fitness. In multiple point models, disease severity at various dates was considered as independent variables and crop loss percentage as dependent variable. This model with the highest coefficient of determination had the best fitness for crop loss estimation. Besides, the results showed that the disease severity at GS37, GS53 and GS91 stages (Zadok's scale) was more important for crop loss prediction than that in other phenological stages.

4

Measuring the energies of aggregate bonding in soils

84%

So H. B., Yatapanage K., Raine S. R.

Bibliotheca Fragmenta Agronomica

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1997

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tom 2B

5

Binding force and mechanical strength of rice grain

84%

Szot B., Ferrero A., Molenda M.

International Agrophysics

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1998

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tom 12

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nr 3

6

Environmental benefits of genetically modified crops: global and European perspectives on their ability to reduce pesticide use

84%

Phipps R. H., Park J. R.

Journal of Animal and Feed Sciences

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2002

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tom 11

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nr 1

7

Crop loss in rubber due to abnormal leaf fall: an analysis on the economic feasibility of plant protection measures in India

67%

Viswanathan P. K., Kadavil T. G., Jacob C. K.

Journal of Plant Protection Research

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2005

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tom 45

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nr 4

235-248

The paper attempts to assess the extent of crop loss in rubber plantations in India, measured in terms of loss in latex and timber output and thereby to examine the comparative economics of plant protection measures against Phytophtora spp. induced abnormal leaf fall (ALF). The specific objectives were: a) to examine the extent of loss in latex and timber output in unsprayed plots vis-a-vis sprayed plots across prominent rubber clones; b) estimate the value of loss in latex and timber output across clones between sprayed and unsprayed plots; c) examine the comparative economics of plant protection measures in terms of the incremental costs and the incremental returns from sprayed plots across clones; and d) reflect upon the policy imperatives with respect to region-specific Research and Development (R&D) interventions on plant protection measures in India. The study brings out significant clonal differences in loss of latex and timber output in the absence of prophylactic spraying against ALF. The observed clonal differences with respect to feasibility of plant disease control measures indicate the need for region and clone-specific recommendations for plant protection measures in India instead of the currently followed unilateral prescription with due allowance to the costs and potential benefit accrued from the control measures. The study also highlight the need for evolving interventions and agro-management/ plant protection measures for minimising the incidence of tree casualty in rubber plantation, as it amounts to loss of potential income from latex and timber from rubber plantations in India, dominated by the smallholder sector.

8

Zwalczanie mszyc i skrzypionek

43%

Strazynski P., Mrowczynski M.

Farmer

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2018

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nr 05

9

Po obeschnieciu podtopionych pol

43%

Laudowicz M.

Agrochemia

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