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Journal of Agricultural Sciences (Belgrade)
2019, vol. 64, br. 3, str. 265-278
jezik rada: engleski
vrsta rada: izvorni naučni članak
doi:10.2298/JAS1903265D

Creative Commons License 4.0
Ekonomski efekti međurednog rastojanja i integralnog sistema suzbijanja korova u soji (Glycine max L.)
aFederal University of Agriculture, Department of Plant Physiology and Crop Production, Abeokuta, Nigeria
bFederal University of Agriculture, Department of Soil Science, Abeokuta, Nigeria

e-adresa: olumidedara01@gmail.com

Sažetak

Visoki troškovi uzgajanja i suzbijanja korova predstavljaju glavne ograničavajuće faktore za povećanje produktivnosti soje i neto prihoda. Poljski ogledi su sprovedeni 2016. i 2017. godine na Nastavno-istraživačkom dobru Poljoprivrednog federalnog univerziteta u Abeokuti da bi se ispitali ekonomski efekti različitih međurednih rastojanja i integralnog sistema suzbijanja korova u proizvodnji soje. Eksperiment je postavljen po potpuno slučajnom blok sistemu u tri ponavljanja, sa tri glavna tretmana koji predstavljaju različita međuredna rastojanja (50, 75 i 100 cm). Ovi tretmani su podeljeni na 7 podtretmana koji uključuju šest metoda suzbijanja korova i zakorovljenu kontrolu. Smanjenje međurednog rastojanja sa 100 cm na 75 cm, odnosno 50 cm dovelo je do značajnog smanjenja biomase korova. Osim toga, troškovi proizvodnje, prinos zrna i bruto dobit su povećani sa smanjenjem međurednog rastojanja sa 100 cm na 75 cm, odnosno 50 cm. Kada je soja posejana na međuredno rastojanje od 50 cm, primena 2 kg a.s./ha herbicida Probaben 400EC (metolahlor 20% w/v + prometrin 20% w/v) ili Butahlor 60 EC (butahlor) uz okopavanje 6 nedelja posle setve obezbedila je najveći prinos od 2301-2484 kg/ha i ukupni prihod od 2129-1972 $/ha. Suprotno tome, tri okopavanja su obezbedila najviši prinos od 2155-2081 kg/ha i ukupni prihod od 1848-1783 $/ha za useve gajene na međurednim rastojanjima od 75 i 100 cm. Uprkos većem prinosu i prihodu dobijenim sa tri okopavanja za tretmane sa međurednim rastojanjima od 75 i 100 cm, bruto dobit i odnos prihoda i troškova bili su niži nego za tretmane u kojima je primenjen samo herbicid ili je primena herbicida kombinovana sa okopavanjem. Kada je profitabilnost u pitanju, najveća bruto dobit od 1479 $/ha je postignuta kada je soja zasejana na međurednom rastojanju od 50 cm i tretirana sa 2 kg a.s./ha herbicida Probaben 400EC u kombinaciji sa okopavanjem. Dva ili tri okopavanja soje posejane na uskom (50 cm) međurednom rastojanju nisu garantovala najveći prinos, ali su prilično povećala troškove suzbijanja korova. Ovim istraživanjem se sugeriše da će se uskim međurednim rastojanjem (50 cm) i primenom herbicida pre nicanja smanjiti broj okopavanja, pa time i visoki troškovi proizvodnje koji su neophodni za optimalni prinos, kao i da će se povećati profitabilnost proizvodnje soje.

Ključne reči

ekonomika; međuredno rastojanje; soja; integralni sistem suzbijanja korova; bruto dobit

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