Guru GyaanAgroStar Agronomy Centre of Excellence
Impact of sowing period, crop distance and seed rate on insect pests
The incidence of insect pests is generally remain higher in the crops sown/planting at narrow.
Narrow planting helps to increase the moisture and insufficient sunlight which provide favourable condition for the development of insect pests.
Keeping narrow distance between two rows while transplanting the paddy, the population of leaf hoppers and leaf folder are generally higher.
The stem borers infestation is much more in sugarcane field sown at narrow distacne between two rows.
Narrow distance between two rows of cotton increases the various types of sucking insect pests.
Close planting of groundnut reduces the incidence of aphids.
Changing in sowing period also affect on the incidence of various insect pests.
If sowing of mustard done during the first fortnight of October, the infestation of aphids and sawfly is negligible.
The damage caused by shoot fly is very low in sorghum sown little bit early.
Summer pulses such as green gram and black gram sown in second fortnight of February increases the pest infestation.
Cabbage transplanted in December is more likely to be damaged by aphids.
The damage caused by various sucking pests is very less in early (last week of May) sown cotton.
The incidence of stem borer is very less in maize sown duirng the first fortnight of August.
Keeping the seed rate a little higher than recommended can comensate the loss of seedling due to shoot fly.
Thus, follow recommended sowing time, distance between two rows and seed rate given by Agricultural Univeristy and Agriculture Department and protect your crops against various insect pests.
Source: Agostar Agronomy Center of Excellence
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