Khan Ikramullah, Marwat Khan Bahadar, Hussain Zahid
Department of Weed Science, NWFP Agricultural University, Peshawar 25130-Pakistan.
Commun Agric Appl Biol Sci. 2007;72(2):259-64.
To evaluate the effect of different herbicides for controlling weeds in wheat (variety Fakhr-i-Sarhad),at higher attitude, an experiment was conducted at Agriculture Research Station, Chitral during Rabi season 2003-04, using Randomized Complete Block Design, keeping four replications. The experiment, sown in November comprised of eight treatments, viz; seven herbicides and a weedy check. Each treatment consisted of 5 rows each 30 cm apart and 5 m long thus giving a total size of 5 m x 1.5 m. The herbicides used included; terbutryn + triasulfuron at 0.16 kg, 2,4-D at 0.7 kg, fenoxaprop-P-ethyl at 0.93 kg, clodinafop at 0.05 kg, bromoxynil + MCPA at 0.49 kg, carfentrazon-ethyl at 0.02 kg and isoproturon at 1.0 kg a.i ha(-1). The data were recorded on weed kill efficiency (%), fresh weed biomass (kg ha(-1)), plant height (cm), spike length (cm), number of tillers m(-2), number of grains spike(-1), thousand grains weight (g), biological yield (kg ha(-1)), grain yield (kg ha(-1)) and harvest index (%). The data recorded on weed kill efficiency, weed biomass (kg ha1), grains yield (kg ha(-1)) and harvest index (%) were significantly affected by the different herbicidal treatments. Statistically isoproturon treatment exhibited the best performance, with maximum weed kill efficiency (48.26%) and minimum fresh weed biomass (433.3 kg ha(-1)) as compared to weedy check (6 %) and (1102 kg ha(-1)), respectively. Similarly, the spike length (8.34 cm), number of tillers (427 m(-2)), number of grains spike(-1) (38.0), thousand grains weight (39.85 g), biological yield (8475 kg ha(-1)), grain yield (2530 kg ha(-1)) and harvest index (31.3%) were the highest in isoproturon treatments as compared to weedy check having (7.64 cm), (356 m(-2)), (34.1), (37.12 g), (6858 kg), (1913 kg ha(-1)) and (27%), respectively.
为评估不同除草剂对控制小麦（品种Fakhr-i-Sarhad）杂草的效果，在较高海拔地区，于2003 - 2004年冬季作物生长季节在奇特拉尔农业研究站进行了一项实验，采用随机完全区组设计，设置4次重复。该实验于11月播种，包括8种处理，即7种除草剂和一个杂草对照。每个处理由5行组成，每行间距30厘米，长5米，因此总面积为5米×1.5米。使用的除草剂包括：0.16千克的特丁净 + 醚苯磺隆、0.7千克的2,4 - D、0.93千克的精恶唑禾草灵、0.05千克的氯氟吡氧乙酸、0.49千克的溴苯腈 + 2甲4氯、0.02千克的乙羧氟草醚和1.0千克有效成分每公顷的异丙隆。记录的数据包括杂草防除效率（%）、新鲜杂草生物量（千克每公顷）、株高（厘米）、穗长（厘米）、每平方米分蘖数、每穗粒数、千粒重（克）、生物产量（千克每公顷）、籽粒产量（千克每公顷）和收获指数（%）。不同除草剂处理对记录的杂草防除效率、杂草生物量（千克每公顷）、籽粒产量（千克每公顷）和收获指数（%）有显著影响。从统计学上看，异丙隆处理表现最佳，与杂草对照相比，杂草防除效率最高（48.26%），新鲜杂草生物量最低（433.3千克每公顷），杂草对照的杂草防除效率和新鲜杂草生物量分别为（6%）和（1102千克每公顷）。同样，与杂草对照相比，异丙隆处理的穗长（8.34厘米）、分蘖数（427每平方米）、每穗粒数（38.0）、千粒重（39.85克）、生物产量（8475千克每公顷）、籽粒产量（2530千克每公顷）和收获指数（31.3%）最高，杂草对照的穗长、分蘖数、每穗粒数、千粒重、生物产量、籽粒产量和收获指数分别为（7.64厘米）、（356每平方米）、（34.1）、（37.12克）、（6858千克）、（1913千克每公顷）和（27%）。
