Integrated weed management in gram (Cicer nrietinirm)
DOI:
https://doi.org/10.59797/ija.v41i3.3695Keywords:
Abstract
An investigation was carried out during medium in available nitrogen (3 10 kg/ha), the winter (rabi) season of 1992-93 on a low in available phosphorus (P,O,, 24 kg/ clay soil at Agricultural College, APAU, ha) and rich in available potash (654 kglha). Bapatla, to study the efficacy of different The experimental field was dominant herbicides on the control of weeds in gram with Cynodon dactylon (L.) Pers. and Cypa- (Cicer arietinum L.) var. ICCV 10. The rus rotundus L., constitl~tillg about 51.2 and experiment was laid out in randomized 40.5% respectively. Of the dicot. weeds, viz. block design with 11 treatments (Table 1) Trianthamaprotulaca.strzrn~ I,., Ez~phorbia and replicated thrice. The soil of the experi- hirta L., Croton bon~)l~rnJi(~num Bail]., mental field was clay with pH 7.8. It was Amaranthus viridis L., Ahz~/rrlon indicumReferences
Indian J. Agron. 41 (3) : 496497 (September 1996)
Integrated weed management in gram (Cicer nrietinirm)
A. SESHAREE, P.V. N.PRASAD, K.L. RAO, AND K. HART PRASAI) IIAO
Department of Agronomy, Agricultural Collegz, Andhra Prade.sh A,qric~rllz~ral University, Bapatla
Received: October 1993
An investigation was carried out during medium in available nitrogen (3 10 kg/ha), the winter (rabi) season of 1992-93 on a low in available phosphorus (P,O,, 24 kg/ clay soil at Agricultural College, APAU, ha) and rich in available potash (654 kglha). Bapatla, to study the efficacy of different The experimental field was dominant herbicides on the control of weeds in gram with Cynodon dactylon (L.) Pers. and Cypa- (Cicer arietinum L.) var. 'ICCV 10'. The rus rotundus L., constitl~tillg about 51.2 and experiment was laid out in randomized 40.5% respectively. Of the dicot. weeds, viz. block design with 11 treatments (Table 1) Trianthamaprotulaca.strzrn~I,., Ez~phorbia and replicated thrice. The soil of the experi- hirta L., Croton Bail].,
bon~)l~rnJi(~num mental field was clay with pH 7.8. It was Amaranthus viridis L., Ahz~/rrlon indicum
Table 1. Weed dry matter, weed-control efficiency and seed yield of gram as a!Tectcd hy dilltrcnl wced-control
treatments
Treatment Weed dry matte1 (g/m2)ill Seed
days* 60 days* I li~ncst (kglha)
Pre-plant incorporation of fluchloralin
@ 1.0 kg ailha
Pre-emergence application of alachlor
@, 1.0 kg aiha
Pre-emergence application of isoroturon
@ 1.0 kg ailha
Hand-weeding at 15 days*
Hand-weeding at 30 days*
Hand-weedigs at 15,30 days*
Pre-plant incorporation of fluchloralin O1.0 kg aiha+ hand-weeding at 30 days*
re-emergence application of alachlor @
I .O kg ailha + haid weeding at30 days*
Pre-emergence application of isoproturon
l .O ail@ + hand weeding at 30 days*
*Days after sowing
September 19961 WEED MANAGEMENT IN GRAM
(L.) and Phylanthus niruri L., Trianthama 65.5,61.7 and 59.1%. respectively. This protulacastrum L. constituted about 45% of reduction n grain yield due to herbicides the total dicots alone compared with integrated weed
Fluchloralin alone and fluchloralin + management system could be due to their handweeding reduced the dry weight of lower persistence of herbicides in the soil, weeds up to'57.8 and 83.7% respectively which resulted in reappearance of weeds at compared with the weedy check. (Table 1). the later stages. These results support the
Highest grain yield (980 kglha) was findings of Kumar and Kolar (1988). recorded in weed-free treatment, followed by fluchloralin + hand-weeding (884 kglha) and hand weeding twice (828 kglha). The Kumar, K. and Singh Lok~r, J. 1088. Relative
performance of terhulryn ~i~cci~
