weed populations

Listing 1 - 10 from 132 for weed populations

Weed Management in Sugarcane - 2006
... , the fallow period between final ratoon harvest and planting has effectively been used to manage troublesome weed populations. This is accomplished primarily by mechanical cultivation. Flooding fallow fields also aids in ... canopy that shades the row middles early in the season is very helpful in reducing weed competition. The loss of cane stools in ratoon crops due to rodent, insect, or harvest ...
edis.ifas.ufl.edu

Weed Control in Your Lawn
... an opposite effect on grass roots. Light watering causes germination and growth of shallowly rooted weed species. Excess irrigation may lead to infestations by yellow nutsedge and annual bluegrass. Adequate drainage ... called a 'Dandelion Digger' or 'Fishtail'). CHEMICAL CONTROL is often the easiest, especially with high weed populations. The 2,4-D spray works best in the spring or in September when ...
gardenline.usask.ca

Virus Diseases of Greenhouse HYG-3065-96
... insect vectors. Thrips are the primary means by which INSV spreads about the greenhouse. Getting thrips populations under control can dramatically reduce the incidence of INSV in your crop. Other insects such as ... serve as alternate or secondary hosts for plant viruses as well as their insect vectors. Keeping weed populations in and around the greenhouse to a minimum is a good sanitary practice that ...
ohioline.osu.edu

Using Micro Herbicide
... /A. Experience has shown that using micro rates will require three to five applications, depending on weed populations and emergence patterns. It is recommended that the herbicides be applied broadcast instead of in a ... the weeds are in the cotyledon to 2 true leaf stage. Waiting longer can result in poor weed control with these below-label rates. All subsequent applications should be made at 5 to 7 ...
www.uidaho.edu

Weed Science Research at UNE
... The presence of the crop (buckwheat) was also found to be highly suppressive of the weed populations in the experiment. This project provides potential options to develop night cultivation as an ... He is focussing on common sowthistle which is increasingly becoming a dominant and herbicide resistant weed over the northern grain growing region of eastern Australia. Its population increase is thought to ...
www.une.edu.au

Tillage for weed control
... use discs or tynes andget 100% cut out on drying conditions you will get 100% weed control.If they are small weeds and the soil stays moist to wet, you will ... fewer weedsthan similar strips ploughed in daylight (Klaffke 1998). Nightploughing of wheat crops resulted in weed populations so low thatherbicide treatment proved unnecessary. These German researchers havedeveloped a shielding device which ...
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Weed Management in Home Lawns
... open areas are usually slow to recover, thus enabling weeds to become established. High nematode populations also thin the turf and make it less able to recuperate from environmental stresses. Weeds ... areas. Similarly, rototillers should be thoroughly cleaned before and after use to minimize dispersal of weed seeds found in the soil. Yard clippings that contain weeds should be properly disposed of ...
edis.ifas.ufl.edu

N.J. Weed Gallery: Weed
... and germinate sometime in May. They are both coarse, unsightly grasses and can grow close to the ground and thus escape the mower. Prolific seed producers. The crabgrass rake can be used to control lighter populations. Additional Images Large Image of Crabgrass How useful was this information? 4 = Very Useful 3 = Somewhat Useful 2 = Inadequate 1 = Not Useful At All Average Rating 3.3 out of 4 1 2 ...
www.rce.rutgers.edu

N.J. Weed Gallery: Weed
... in New Jersey in the early '80s it is now widespread in dense populations. Usually found in moist, shady habitats. It is an extremely invasive grass although not as yet an economically important weed. Field botanists rank it along with purple loosestrife and garlic mustard in its invasive properties. Additional Images Large Image of Mary's Grass ...
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WEED THRESHOLDS AND WEED EMERGENCE PATTERNS IN SUGAR BEETS
... wet spring, all weeds began emerging by May 8. In both years, weed emergence peaked on or before June 11, and populations declined the rest of the season. Any later emerging weeds ... (Table 4). This same treatment controlled kochia and redroot pigweed 89%. Table 4. Late season weed control evaluations for herbicide treatments in 1997 and 1998. ________Weed Control_______ Treatment Rate Timing Rrpw ...
www.uidaho.edu