Are there any critical periods in the crop growth cycle where weeds should be targeted? How does the level of weed pressure impact the effectiveness of weed management interventions, and how can farmers determine when to intervene?
Absolutely if the weeds are controlled critically for an initial period the losses for late development can be insignificant.
In a crop like millet this can be determined by experimentation.
Keeping field free from weeds for the first 40 days would generally be sufficient to avoid significant weed losses.
Suggest you doing the experiment under your conditions to determine the period for your purposes.
The timing of weed management interventions can greatly affect the success of weed control in millet fields. Millet is a cereal crop that is grown in many parts of the world, and weeds can significantly reduce its yield and quality if left uncontrolled. Here are some of the ways that timing can impact weed control success in millet fields:
In summary, the timing of weed management interventions is a critical factor in the success of weed control in millet fields. Early and timely intervention, as well as regular weed control interventions, can prevent weed growth and competition with the millet crop, leading to higher yields and improved quality.
The weed controlled in initial stage. Physical/mechanical methods such as hand weeding at 20 and 30 days after planting (DAP) or passing wheal hoe twice with one manual weeding were found to be equally effective. This can be achieved through a combination of cultural, mechanical, and chemical control methods.The weed management treatments consisted of pre-emergence application (PE) of pretilachlor, isoproturon and pyrazosulfuron-ethyl 500, 500 and 15 g/ha, respectively. All the preemergence herbicides can be supplemented with intercultivation or post-emergence application (PoE) of penoxsulam 20 g/ha, at 20 days after seeding (DAS). Pre-emergence herbicides can be applied at 1 DAS and inter-cultivation/post-emergence herbicide, penoxsulam was applied at 20 DAS.
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