Vol. 51â1997 - NorthEastern Weed Science Society
Vol. 51â1997 - NorthEastern Weed Science Society Vol. 51â1997 - NorthEastern Weed Science Society
Waggone December 24, 1994 136 which reduced weed growth before wheat harvest, thus reducing weed biomafs after wheat harvest", granting a bonus of water saved durirg ecofallow. The sheer pressing of more plants and garnering nore yield from a field grants some bonuses while sparing lard for Nature. 4 • 3 ;~~ 6 m raIn -Weeds m s: ..... -. ::;::. s:::. ::;::. {g2 4 c: (ij CD ~ 1 2 8 .... C) 0 0 20 40 60 80 100 120 Maize K plantslha Fig 5. The decline in biomass of weeds beneath increasingly dense maiz~ populations. With high pressure of weeds, their dry weight after silking of maize and the subsequent harvest of maize. Tollenaar et al. 1994) At last I pust confront the higher rates of factors like fertilizer and pesticide that achieve the higher yields to spare land I begin with the principle that improving husbandry n step grants bonuses. Several experiments in Bangladesh demonstrated that fertilizer plus weed control raised yie ds even more than the sum of their individual benefits, :'ig 6.
Waggoner December 24, 1994 137 Nothing Weeded Fertilized Fig 6. The se ent labeled Nothing represents yields without fertilizer or eeding in five experiments. Segment Fertilized represents the increased yield or benefit from fertilizer without weedin and segment Weeded the benefit of weeding without fertil'zer. Finally, segment Bonus represents the extra benefit eyond the sum of Fertilized plus Weeded from both fertilizi and weedin . (Mood 1981, table 29). Such a bonus 'splays Liebig's law of the minimum: Adding A out of step wi h B wastes A. Most production resources are used more effi iently as all are improved. DeWit (1992) advised that, 0 serve both agriculture and environment, research shoul turn from a search for marginal returns on each resource 0 find the minimum of each for optimum utilization of all. Improving factors in step grants bonuses. per product Although bonus .s are welcome, environmental expense must be confronted. I return to Widget Inc. and ask how the boss would reckon e pense of the new computer--because in environmental atters we must be at least as wise as commonplace Wi gets. The boss would not reckon the expense per year or p r square foot of factory space. He would reckon it per widget, the company's reason for being. Just so, we must not reck n environmental expense per year or per hectare of field. We ust be at least as wise as Widgets. Jefferson's r perative makes food, the population times per capita demand, an independent variable, leaving area to be calCUlated. S I reckon expense per quantity of food and feed, which h anity requires and is agriculture's reason for being. To kee before us that humanity calls the tune and
- Page 86 and 87: 86 PRO UCTION PERFORMANCE OF GLYPHO
- Page 88 and 89: 88 Managing nterseeded Cover Crops
- Page 90 and 91: -----------t----~--- 90 Since weed
- Page 92 and 93: 92 The mechanistic model (equ. I) a
- Page 94 and 95: 94 Exploring the Feasibility of Pro
- Page 96 and 97: 96 INHIBI ING THE DEVELOPMENT OF CI
- Page 98 and 99: 98 However it .ncreased the control
- Page 100 and 101: 100 LIVERWORT AND PEARLWORT MANAGEM
- Page 102 and 103: 102 ULFENTRAZONEAND HALOSULFURON:HE
- Page 104 and 105: 104 estern New York Nursery IPM Pro
- Page 106 and 107: 106 C MMONRAGWEEDCONTROLIN FIELD CO
- Page 108 and 109: 108 CGA-77102: A New Herbicide for
- Page 110 and 111: 110 POSTEMERGENCEWEEDCONTROLIN SOYB
- Page 112 and 113: 112 E FECTS OF REPEATEDLATE-WINTERH
- Page 114 and 115: 114 GSNOW ECOSYSTEl\1 PROJECT: NITR
- Page 116 and 117: 116 RESULTS AND DISCUSSION GI fosin
- Page 118 and 119: ---------T---~~-- 118 EVALUA ON OF
- Page 120 and 121: 120 B USB CONTROL PROVIDED BY LOW V
- Page 122 and 123: ------- 122 W VOLUMEWEED AND BRUSH
- Page 124 and 125: 124 EVA UATION OFGLYPHOSATEFOR DORM
- Page 126 and 127: 126 E ALUATION OF IMAZAMETH FOR WEE
- Page 128 and 129: 128 Presidential Address Delivered
- Page 130 and 131: 130 Ho much land can ten billion pe
- Page 132 and 133: Waggone December 24, 1994 132 count
- Page 134 and 135: Waggone December 24, 1994 134 25 Pa
- Page 138 and 139: December 24, 1994 138 sets the pecu
- Page 140 and 141: ----------+---- Waggone December 24
- Page 142 and 143: Waggone December 24, 1994 142 soil
- Page 144 and 145: Waggone December 24, 1994 144 ~oo~
- Page 146 and 147: Waggoner December 24, 1994 146 350
- Page 148 and 149: 148 Appendix Calculate the environm
- Page 150 and 151: 150 alone ac eptably controls typic
- Page 152 and 153: 152 opportu ity to use sethoxydim a
- Page 154 and 155: ---------+----------- 154 IMPACT OF
- Page 156 and 157: 156 The STS® time line: • 1986 -
- Page 158 and 159: -------_. __ ._._--- d •••..
- Page 160 and 161: -----_._~-_._.__.- 160 SYNCBRONYTM.
- Page 162 and 163: 162 Government approvals for Roundu
- Page 164 and 165: HH i ! 164 AG6101 l.oundup Ready®
- Page 166 and 167: 166 n Lib rty LinkTM soybeans will
- Page 168 and 169: 168 IMITMCORN YIELD PERFORMANCE* (H
- Page 170 and 171: 170 to $15 an ere depending upon ho
- Page 172 and 173: 172 e recent occurrence has been th
- Page 174 and 175: 174 He bicide was added to the tiss
- Page 176 and 177: 176 it can at ti es be a weed in Ke
- Page 178 and 179: 178 ty's main campus that Rhizocton
- Page 180 and 181: 180 weight conclu qualit treatm and
- Page 182 and 183: 182 during the st or 2nd growing se
- Page 184 and 185: 184 TABLE 1. Mean raspberry cover (
Waggone December 24, 1994<br />
136<br />
which reduced weed growth before wheat harvest, thus reducing<br />
weed biomafs after wheat harvest", granting a bonus of water<br />
saved durirg ecofallow. The sheer pressing of more plants and<br />
garnering nore yield from a field grants some bonuses while<br />
sparing lard for Nature.<br />
4<br />
•<br />
3 ;~~ 6<br />
m raIn -<strong>Weed</strong>s<br />
m<br />
s:<br />
..... -.<br />
::;::. s:::.<br />
::;::.<br />
{g2 4 c:<br />
(ij<br />
CD<br />
~<br />
1 2<br />
8<br />
....<br />
C)<br />
0 0<br />
20 40 60 80 100 120<br />
Maize K plantslha<br />
Fig 5. The decline in biomass of weeds beneath increasingly<br />
dense maiz~ populations. With high pressure of weeds, their<br />
dry weight after silking of maize and the subsequent harvest<br />
of maize. Tollenaar et al. 1994)<br />
At last I pust confront the higher rates of factors like<br />
fertilizer and pesticide that achieve the higher yields to<br />
spare land I begin with the principle that improving<br />
husbandry n step grants bonuses. Several experiments in<br />
Bangladesh demonstrated that fertilizer plus weed control<br />
raised yie ds even more than the sum of their individual<br />
benefits, :'ig 6.
Change language