PCN
affects the total growth
PCN
infestation initially appears in patches and then spreads in the entire fields
within 4-5 years through irrigation water, wind, agricultural implements, humus
and movement of seed material grown from the infested fields. The infested
plants lose vigour, become sickly in appearance with stunted growth, dull
appearance and unhealthy foliage. Infested plants wilt during the sunny and
bright days and require more water per unit weight compared to the healthy ones.
The total photosynthesis per plant is significantly reduced because of reduced
leaf area. This leads to drastic reduction in yield by 65 to 71% from summer and
autumn crops, respectively.
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