Challenge your understanding of effective weed control methods in linseed cultivation. Explore practices, herbicides, and timing to optimize yield while minimizing unwanted competition.
During which stage of linseed growth is weed competition generally considered most detrimental to crop yield?
Explanation: The initial 30-40 days after sowing are crucial because weeds compete most effectively during the early growth phase, impacting stand establishment and yield potential. Seed filling and pre-harvest periods see reduced weed competition due to mature crop canopy and age. After crop maturity, weed impact on yield is negligible.
Which mechanical method is commonly used for controlling weeds in linseed fields, especially before the crop canopy closes?
Explanation: Hand weeding is effective before canopy closure, allowing targeted removal of weeds without harming the crop. Deep plowing is typically done pre-sowing, straw burning targets residue and not active weeds, and foliar spraying refers to chemical—not mechanical—methods.
Which herbicide is appropriately recommended for pre-emergence weed control in linseed cultivation?
Explanation: Pendimethalin is commonly recommended and registered for pre-emergence use in linseed, controlling a broad range of weeds. Glyphosate is a non-selective herbicide used before sowing, metribuzin may harm linseed, and atrazine is mainly used in maize and sorghum.
What is a likely consequence if effective weed control is neglected during linseed cultivation?
Explanation: Weeds compete for resources, potentially causing substantial yield loss if unmanaged. Neglect does not improve soil fertility, nor is earlier maturity or increased oil content a typical outcome of weed infestation in linseed.
Which of the following is a benefit of intercropping linseed with a legume, in terms of weed management?
Explanation: Intercropping with legumes can provide more canopy coverage, limiting light for weed emergence and suppressing their growth. It generally reduces, not increases, herbicide needs. Promotion of weed germination or delayed flowering are not consistent benefits of this practice.