Effect of Weed Removal on Productivity of Chickpea (Cicer arietinum L.) and Lentil (Lens culinaris Med.) in a Mediterranean Environment

Abstract

Three field experiments were conducted on chickpea {Cicer arietinum L.) and four on lentil {Lens culinaris Med.) at different winter-sown rainfed locations in Jordan from 1988/89 to 1990/91 to study the effect of the duration of weed-free and weed-infested conditions on yields and yield components of the crops. Chickpea seed yields were reduced on average by 81 % and straw yields by 63 % when fields remained weed infested until harvest compared with weed-free conditions throughout the growing season. The corresponding lentil seed and straw yield decreases were 63 % and 55 %. As the duration of weed-free period increased and the duration of weed-infested period decreased, yields increased. However, the critical period of weed interference was between 35 and 49 days after emergence in chickpea and between 49 and 56 days after emergence in lentil, when these crops were at an advanced stage of vegetative growth. There were significant negative correlations between the weed dry weight and the seed or straw yields. The reduction in seed yields in both crops because of weed interference occurred mainly through the reduced number of pods/plant, which in turn was partly the result of reduced number of secondary branches. In chickpea, some reduction also occurred through reduced 100-seed weight.

Effect of Planting Pattern and Weeding Frequency on Weed Infestation, Yield Components and Yield of Cowpea [<i>Vigna unguiculata</i> (L.) WALP.] in Wollo, Northern Ethiopia

“…Means in the column and rows followed by the same letters are not significantly different at 5% level of significance These results were in line with the previous research conducted by [49] who found that 100 seed weight was increased with reduced weed infestation in mung bean. Similar results were reported on chickpea by [50], [31], [32] and [33] where weed interference decreased simultaneously number of pods plant -1 and 100 seed weight. Further, it was found that except weedy check under all the weeding frequencies, the hundred seed weight was significantly higher at Sirinka than at Jari (Table 7).…”

Weed control in lentil (Lens culinaris) in eastern Turkey

“…Weeds compete with the crop for nutrients, water, and light, reducing crop yields and grain quality (Turk & Tawaha 2003). Yield losses in lentil of 40-80%, as a result of weeds, have been reported (Saxena & Wassimi 1980;Chaudhary & Singh 1987;Al-Thahabi et al 1994).…”

Efficacy Evaluation of some Herbicides for Weed Management and Yield Attributes in Broad Bean (Vicia faba)

“…Farmers often consider weeds to be the major biological constraint to growing legume crops successfully. In fact, compared with cereals, legume species generally have an open growth habit and a slow growth rate in the early stages of the crop cycle, characteristics that favor the emergence and growth of weeds (Al-Thahabi et al, 1994;Smitchger et al, 2012). Weed interference in dry bean can reduce seed yield as much as 83% (Arnold et al, 1993;Malik et al, 1993;Chikoye et al, 1995) and can interfere with harvest efficiency and may cause staining and reduce seed quality (Burnside et al, 1994;Bauer et al, 1995;Urwin et al, 1996).…”