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Full-Text Articles in Life Sciences

Economic Threshold For Wild Radish (Raphanus Raphanistrum L.) Control In Wheat Fields, Özhan Boz Jan 2005

Economic Threshold For Wild Radish (Raphanus Raphanistrum L.) Control In Wheat Fields, Özhan Boz

Turkish Journal of Agriculture and Forestry

Field experiments were conducted in Aydın province in 1998 and 1999 to determine the economic threshold (ET) using florasulam + flumetsulam, 2,4-D amine, thifensulfuron methyl + tribenuron-methyl, and tribenuron-methyl for wild radish (Raphanus raphanistrum L.) in wheat. The effect of wild radish density (1, 2, 4, 8 and 16 plants m^{-2}) on wheat yield was investigated using an adjacent plot design with 4 fields. For each weed density, yield was compared with that in the adjacent weed-free control plot. The grain yield in wild radish-free wheat was 4079 kg ha^{-1} in 1998, 4369 kg ha^{-1} in 1999 and 4224 kg …


Changes In Weed Response To 2,4-D Application With 5 Repeated Applications In Spring Wheat, Hüseyi̇n Zengi̇n Jan 2001

Changes In Weed Response To 2,4-D Application With 5 Repeated Applications In Spring Wheat, Hüseyi̇n Zengi̇n

Turkish Journal of Agriculture and Forestry

2,4-D amine and 2,4-D isooctylester were sprayed repeatedly in the spring of 5 consecutive years on spring wheat (Triticum aestivum L.cv.Kırik)in Erzurum during the years 1990-1994. The herbicide efficacy against all broad-leaved weeds and against the most common weed species was determined by comparing the number of weeds in untreated and treated plots. The most abundant weed species were Polygonum aviculare, Amaranthus retroflexus and Chenopodium albumin spring wheat. The effect of 2,4-D amine decreased after 3 or 4 years in A.retroflexus, C.album,Convolvulus arvensis, Acroptilon repens, Lactuca serriola, P.aviculare, Cirsium arvense and other broad-leaved weeds. Effects against Sinapis arvensis and Sisymbrium …


Pine Hollow Exclosures: Effect Of Browsing On An Aspen Community Sprayed With 2,4-D, D.L. Bartos, R.O. Harniss Jan 1990

Pine Hollow Exclosures: Effect Of Browsing On An Aspen Community Sprayed With 2,4-D, D.L. Bartos, R.O. Harniss

Aspen Bibliography

The Pine Hollow aspen (Populus tremuloides) exclosures on the Ashley National Forest in eastern Utah were sampled in 1984, 19 years after they were established.


Survey Of Aspen Stands Treated With Herbicides In The Western United States, R.O. Harniss, D.L. Bartos Jan 1985

Survey Of Aspen Stands Treated With Herbicides In The Western United States, R.O. Harniss, D.L. Bartos

Aspen Bibliography

No abstract provided.


Creating Stable Shrub Communities For Managed Openings In The Aspen Forest, Donald A. Perala, R.W. Sorensen Jan 1979

Creating Stable Shrub Communities For Managed Openings In The Aspen Forest, Donald A. Perala, R.W. Sorensen

Aspen Bibliography

No abstract provided.


Brush Control On Sandy Rangelands In Central Alberta, A.W. Bailey, H.G. Anderson Jan 1979

Brush Control On Sandy Rangelands In Central Alberta, A.W. Bailey, H.G. Anderson

Aspen Bibliography

No abstract provided.


Advantages Of Herbicides For Brush Control On Newly Seeded Rangeland In Western Canada, G.G. Bowes Jan 1978

Advantages Of Herbicides For Brush Control On Newly Seeded Rangeland In Western Canada, G.G. Bowes

Aspen Bibliography

No abstract provided.


Forage Production And Utilization In A Sprayed Aspen Forest In Alberta, J.E. Hilton, A.W. Bailey Jan 1974

Forage Production And Utilization In A Sprayed Aspen Forest In Alberta, J.E. Hilton, A.W. Bailey

Aspen Bibliography

One of the primary concerns of many cattle ranchers in the aspen parkland area of Alberta and Saskatchewan is to increase forage production through the replacement of woody species by usable forage plants.


Cattle Use Of A Sprayed Aspen Parkland Range, J.E. Hilton, A.W. Bailey Jan 1972

Cattle Use Of A Sprayed Aspen Parkland Range, J.E. Hilton, A.W. Bailey

Aspen Bibliography

Aspen parkland range in central Alberta that had been treated with a herbicide two years prior to the study had greater grazing use of the sprayed forest vegetation than did the untreated forest.