Investigating the Effect of Planting Pattern and Weed Management on the Yield and Growth Indices of Two Peanut (Arachis hypogaea L.) Cultivars

To investigate the effect of weed management and planting pattern on the growth and yield of two peanut cultivars, a factorial experiment based on a randomized complete block design with three replications was carried out in the Agriculture and Natural Resources Campus of Razi University, Kermanshah in ۲۰۲۱. The experimental factors include ۱) cultivars NC۲ and NC۷, ۲) planting pattern (row and plant spacing of ۵۰ cm × ۲۵ cm and ۷۵ cm × ۱۸ cm), and ۳) two times weeding along with the use of Trifluralin ۴۸% EC (۷۹۶ g a.i.ha-۱), Bentazon ۴۸% SL (۹۶۰ g a.i.ha-۱) and Haloxyfop-r-methyl ۱۰.۸% EC (۷۵ g a.i.ha-۱), weeding two times along with the use of Trifluralin (۱۲۳۳ g a.i.ha-۱), twice weeding together with the use of Haloxyfop-r-methyl and Bentazon, complete weeding and weed-infested treatment. The results showed that the weed control significantly increased the plant's dry weight. The kernels dry weight in the plant showed a significant increase in both studied planting patterns in weed control compared to no control. However, the impact of weed control treatments on the two studied planting patterns did not exhibit any significant differences, except for the complete weeding treatment. The kernels dry weight within plants subjected to complete weeding in the ۵۰ × ۲۵ cm planting pattern exhibited a ۳۹.۳۱% increase relative to those grown in the ۷۵ × ۱۸ cm. The response of dry weight of kernels and pods was high for cultivar NC۲ in a planting pattern of ۵۰ x ۲۵ cm and for cultivar NC۷ in ۷۵ x ۱۸ cm. In general, according to the obtained results, due to the high sensitivity of peanuts to weed competition, it is suggested to control weeds at the beginning of the growing season until about ۶۰ days after planting, regardless of the type of planting pattern.

کلیدواژه ها:

Biomass ، chemical weed control ، growth analysis ، weed interference