Integrated weed management in organic field pea and lentil
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1 Integrted weed mngement in orgnic field pe nd lentil Acdemic nd reserch supervisor: Dr. Steven Shirtliffe Presenter: Oleksndr Alb MSc Cndidte
2 Pictures ssessed from:
3 Rotry hoe Orgnic frm, Quebec
4 Hrrowing Yield effects (%) Adjustble tine ngle= better weed buril Weed control (%) Pos. Effect Neg. Effect Sum Weed control Crop covering / injury [Adpted from Rsmussen (1991), Weed Reserch 31(6)] Weeds My 17-June 15 Bury your weeds
5 Inter-row cultivtion Lrge weed not problem (Stnley et l, 216; Mohler et l, 216)
6 Pre-emergence up to cotyledon stge Pre-emergence up to 5 node stge From 5 up to 1 nodes stge
7 Lentils before RH Pes before H Pes before IT Lentils fter RH Pes fter H Pes fter IT
8 Objective Determine the effect of mechnicl weed control pplied lone nd in combintion (Rotry hoeing, post-emergence hrrowing nd inter-row cultivtion) nd crop seeding rte on yield nd weed suppression in orgniclly grown field pe nd lentil.
9 Project Description Experimentl design Mixed model fctoril desing (4 replictions) Loction Yer 216 nd 217 Size of plot Fctors Kernen Reserch Frm nd Goodle 2.25*6 m Mechnicl weed control pplied s single tretment, pired nd triple tretment combintion (Rotry hoe, hrrow, inter-row cultivtion) Seeding rte Conventionl (L) nd Optiml Orgnic (H). Field pe: (L) 9 plnts/m.sq, (H)-135 plnts/m.sq. Lentil: (L) 13 plnts/m.sq, (H)-26 plnts/m.sq.
10 Results
11 Weed Biomss in Field Pe Goodle-Pe-Weed-Biomss Kernen-Pe-Weed-Biomss Weed Biomss (g/m.sq) bcd bc b H-IT 55% e cde RH-IT 58% cde de Weed Biomss (g/m.sq) cd c b H-IT 83% RH-IT 89% cd cd d d Untr RH H IT RH-H H-IT RH-IT RH-H-IT Untr RH H IT RH-H H-IT RH-IT RH-H-IT Tretments Tretments
12 Weed biomss in Field pe cont. 1 Kernen-Pe-Weed-Biomss High seed rte (H) 15% Weed Biomss (g/m.sq) b Conventionl seedrte (L) Orgnic seedrte (H) L Seeding rte H
13 Weed Biomss in Lentil Goodle-Lentil-Weed-Biomss Kernen-Lentil-Weed-Biomss Weed Biomss (g/m.sq) bcd b bc bc b 51% cd d Weed Biomss (g/m.sq) cd c b d 87% cd d d Untr RH H IT RH-H H-IT RH-IT RH-H-IT Untr RH H IT RH-H H-IT RH-IT RH-H-IT Tretments Tretments
14 Weed composition Wild mustrd 16% Wild Buckwhet 1% Red root Pigweed 15% Lmbsqurter 14% Green foxtil 45%
15 Control by species Green foxtil H-IT 76-94% RH-IT 33-92% Wild mustrd H-IT 95% RH-IT 95% Pigweed H-IT 9-98% RH-IT 71-91% Wild Buckwhet H-IT 64-95% RH-IT 64-95% Lmbsqurters H-IT 83-98% RH-IT 74-89% Pictures ssessed from
16 Field pe yield H-IT 77% RH-IT 74% H-IT 63% RH-IT 59% Goodle-Pe-Yield Kernen-Pe-Yield Yield (kg/h) d bc d bc bc c d d d d d b d b Yield (kg/h) e b bcd cd d bc bcd Untr RH H Conventionl seedrte Orgnic seedrte IT RH-H H-IT Tretments RH-IT RH-H-IT Untr RH H IT RH-H H-IT Tretments RH-IT RH-H-IT
17 IT (H) pe Untreted (left) vs RH-IT (H) pe RH-H-IT (L) pe
18 Goodle-lentil-Yield Tretments Untr RH H IT RH-H H-IT RH-IT RH-H-IT Yield(kg/h) bc c b bc b bc Kernen-Lentil-Yield Tretments Untr RH H IT RH-H H-IT RH-IT RH-H-IT Yield(kg/h) e b d cd b bcd bc Lentil Yield RH-IT 8% RH-IT 15%
19 Lentil Yield cont. Yield (kg/h) Goodle-Lentil-Yield b Kernen-Lentil-Yield 32% 26% 12 1 Yield(kg/h) b L H L H Seeding Rte Seeding rte Conventionl seedrte (L) Orgnic seedrte (H)
20 RH (H) lentil Untreted (left) vs RH-IT (H) lentil RH-H-IT (L) lentil
21 Conclusions Orgnic seeding rte cn improve the efficiency of mechnicl weed control tctics. Integrted weed mngement cn result in significnt weed suppression nd higher yields compred to singulr orgnic weed control tctics. More dt from incoming yers will help in mking sound conclusions.
22 Acknowlegements Supervisor: Dr. Steve Shirtliffe Committee Members: Dr. Rndy Kutcher Dr. Yugung Bi Eric Johnson Shun Cmpbell, Len Syrovy, Tryn Zdunich, Ktherine Stnley, Dilshn Benrgm, Sudhkr Duddu, Kli Ksper, Ti Zhng, Jessic Prtchler, Teketel Hile Summer students Fellow grdute students
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