INTEGRATED WEED MANAGEMENT IN PEANUT (Arachis hypogaea L.) WITH SOWING METHODS AND HERBICIDES COMBINATIONS UNDER SPRINKLER IRRIGATION CONDITIONS
Year: 2015
Type: article
Abstract: Two field experiments were conducted in the Agricultural Research Station of Ismailia, Agricultural Research Center, Egypt in sandy soils heavily infested with weeds, during 2013 and 2014 successive summer seasons under sprinkler irrigation system.The objectives of study was to evaluate the effect of sowing and weed control methods and the interaction between them on associated weeds, growth, yield as well as yield components of peanut with economic study feasibility.Treatments were arranged in split plot design.Two sowing methods being afir1 (without pre-sowing irrigation) and afir2 (with pre-sowing irrigation) were allocated in the main plots and nine weed control treatments (pendimethalin at the rate of 684g/fed.applied post sowing, pendimethalin + clethodim at the rate of 125g/fed.applied post emergence, pendimethalin + imazapic at the rate of 2.04g/fed.applied post emergence, pendimethalin + clethodim + imazapic, clethodim, clethodim + imazapic, imazapic, two hand hoeing and weedy check) were arranged in sub plots.The predominant troublesome weed species in the experimental fields through the two seasons were Portulaca oleracea and Euphorbia geniculata as annual broad leaf weeds, Digitaria samgunalis and Dactyloctenium aegyptium as annual grasses, and Cyperus rotundus as sedges and Panicum repens as perennial grasses.Results indicated that afir2 sowing method (stale bed preparation) significantly reduced the fresh weight of total weeds by 30.1 and 28.6% in 2013 and 2014 seasons, respectively, than afir1 sowing method and significantly increased pod yield of peanut by 13.5 and 15.5% in 2013 and 2014 seasons, respectively, as compared with afir1 sowing method.Net income for peanut significantly increased by 20.4 and 23.0% in 2013 and 2014 seasons, respectively, as compared with afir1 sowing method.Applying (pendimethalin at the rate of 684g/fed.applied post sowing + clethodim at the rate of 125g/fed.applied post emergence + imazapic at the rate of 2.04g/fed.applied post emergence) herbicide combinations significantly reduced the fresh weight of total weeds by 95.8 and 95.4% in 2013 and 2014 seasons, respectively, as compared with weedy check treatment and significantly increased pod yield by 64.9 and 63.6% and net income by 99.3 and 98.0% in 2013 and 2014 seasons, respectively as compared with weedy check treatment.Oil % was not affected significantly by either sowing or weed control methods in both seasons.Thus, the best integration for weed control including annual or perennial troublesome weeds are by using afir 2 sowing method accompanied with applying the combination herbicides of pendimethalin at the rate of 684g/fed.applied post sowing + clethodim at the rate of 125g/fed.applied post emergence at 30 days from sowing + imazapic at the rate of 2.04g/fed.applied post emergence at 30 days from sowing under sprinkler irrigation system in Ismailia area.
Author: S. Eid
Institution: Agricultural Research Center
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDGs: Zero hunger, Life on land
Open Access status: diamond
OpenAlex ID: W4210691534