Claim · model-written summary
Jassid infestation decreased as cotton leaf hair density increased.
Gossypium hirsutumVerbatim
e0“There was a general tendency in the jassid infestation‐averages to decrease which the increase in hair‐density.”
t0“Cotton”
Title
M. M. Hosny; S. A. El.‐Dessouki Zeitschrift für Angewandte Entomologie 1968. doi:10.1111/j.1439-0418.1968.tb04127.x
Other claims from this paper (14)
- Observation Unfertilized cotton varieties had low, insignificantly different jassid numbers.
- Association Jassid numbers increased with fertilization rate.
- Observation Bahteem 185 was least susceptible among four varieties under fertilization.
- Observation Dandarah was most susceptible among four varieties under fertilization.
- Observation A new pubescent G. barbadense strain was most resistant to jassids.
- Observation Triespecies No. I was most susceptible to jassids.
- Observation The other ten varieties had intermediate susceptibility or resistance.
- Observation Giza 66 was the most susceptible across sowing dates, spacing and fertilization.
- Observation The other four varieties showed little difference in susceptibility.
- Intervention effect Sowing on 25th March reduced jassid infestation.
- Intervention effect Jassid counts were higher for 10th March and 8th April sowing.
- Intervention effect Jassid counts were still higher for 3rd May sowing.
- Mechanism Leaf hair density conferred resistance only when hairs extended to lower leaf veins.
- Association Hair length in the tested range had no apparent role in jassid resistance.