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2017, vol. 43, br. 4, str. 179-184
Savremena rešenja rasprskivača u službi precizne poljoprivrede
aUniverzitet u Novom Sadu, Poljoprivredni fakultet
bNaučni institut za ratarstvo i povrtarstvo, Novi Sad
cUniverzitet Mendel u Brnu, Departman za hortikulturu, Lednice, Češka Republika
dSlovački univerzitet poljoprivrede u Nitra, Odsek za mašine i proizvodne sisteme, Nitra, Slovačka

e-adresavladimir.visacki@polj.uns.ac.rs
Projekat:
Unapređenje kvaliteta traktora i mobilnih sistema u cilju povećanja konkurentnosti, očuvanja zemljišta i životne sredine (MPNTR - 31046)

Ključne reči: foliar fertilizers; nozzles; droplets; efficacy; wheat
Sažetak
(ne postoji na srpskom)
Foliar fertilization is an important tool for the sustainable and productive menagment of crops and is significant commercial importance worldwide. The practice of foliar fertilization has the advantages of low cost and a quick plant response, and it is particularly important when soil problems occur and root growth is inadequate. Research efforts were applied to try and characterize the chemical and physical nature of the plant foliar cuticle, the cellular physiology and structure of plant leaves as well as focusing first on physically penetration of liquid fertilizers in plant then on potential mechanisms of penetration in plant. It were used five different nozzles for foliar fertilization with three different norms. Different types of nozzles have to affect on deposition quality of foliar fertilizers and should lead to more efficient adsorption by plants. The main purpose of nozzles is to make droplets with different diameters which penetrate to every leaf of wheat and make better coverage even in windy conditions. Air injector nozzles are most used nozzles in windy conditions but less efficacy may occur due to coarse droplets. Even more, lowest pressure less then 3 bar is not good for air injector nozzles because droplets are extremely coarse. Furthermore, wheat canopy, leaf directions and leaf area in early stages of growth are challange of farmers and researchers to make beter coverage and appropriate droplets for better uptake. In this way, pressure for air injector nozzles should be more then 4 bar for better deposition and coverage. Great impact on better deposition in dense crop have nozzles with two flat fans. Deposition reach more then 70% of foliar fertilizer on wheat leaves.
Reference
Ellis, M., Tuck, C.R., Miller, P.C.H. (1997) The effect of some adjuvants on sprays produced by agricultural flat fan nozzles. Crop Protection, 16(1): 41-50
ISO (2015) Crop protection equipment - Spray deposition test for field crop. 24253-1:2015(en)
Leaper, C., Holloway.P.J. (2002) Adjuvants and glyphosate activity. Pesticide Management Science, 56: 313-319
Palladini, L.A., Raetano, C.G., Velini, E.D. (2005) Choice of tracers for the evaluation of spray deposits. Scientia Agricola, 62(5): 440-445
R. D. Brazee,, M. J. Bukovac,, H. Zhu (2004) Diffusion model for plant cuticular penetration by spray-applied weak organic acid bioregulator in presence or absence of ammonium nitrate. Transactions of the ASAE, 47(3): 629-635
Shaw, G. B., McKercher, R. B., Ashford, R. (1987) The effect of spray volume on spray partitioning between plant and soil. Plant and Soil, 100(1-3): 323-331
Wang, C., Liu, Z. (2007) Foliar uptake of pesticides: Present status and future challenge. Pesticide Biochemistry and Physiology, 87(1): 1-8
Xu, L., Zhu, H., Ozkan, E., Bagley, W.E. (2010) Evaporation and spread of droplets with various types and concentrations of adjuvants on waxy and hairy leaves. u: ASABE Paper No. 1008586, St. Joseph, Mich: ASABE
 

O članku

jezik rada: srpski
vrsta rada: izvorni naučni članak
DOI: 10.5937/SavPoljTeh1704179V
objavljen u SCIndeksu: 22.02.2019.

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