Claim · model-written summary
Whiteheads decreased across the May, June and July plantings (7.9, 6.6 and 4.8 %).
Verbatim
e1“Averages of dead hearts, caused by the rice stem borer were 7.2, 6.6 and 4.6 %, and those of whiteheads were 7.9, 6.6 and 4.8 % for May 1st, June 1st and July 1st plantations, respectively”
e2“Experimental Farm of Rice Research and Training Center (RRTC), Sakha, Kafr El-Sheikh, Egypt”
e3“in Sakha Super 300 rice cultivar”
e5“rice stem borer, Chilo agammnon Bles.”
Title
Taha, S.; H. Saleh; Eman Bleih Egyptian Academic Journal of Biological Sciences, H. Botany/Egyptian Academic Journal of Biological Sciences, H. Botany 2021. doi:10.21608/eajbsh.2021.158820
Other claims from this paper (14)
- Intervention effect Rice planted earlier had higher plant height, days to heading and filled grains per panicle.
- Intervention effect Rice planted earlier had higher panicle weight, 1000-grain weight and grain yield.
- Intervention effect The number of panicles per hill was highest at June 1st planting.
- Intervention effect Fertility percentage was highest at June 1st planting.
- Intervention effect Fertility percentage was lowest at May 1st planting.
- Intervention effect Increasing nitrogen level increased the values of all traits, except fertility and 1000-grain weight.
- Intervention effect Rice leaf miner infestation increased as planting was later.
- Observation Planting on May 1st gave 21.80 and 23.42 infested leaves per 100 rice leaves.
- Association Leaf miner infestation was highest, at 44.45 and 46.00 per 100 rice leaves in 2019 and 2020.
- Association Percentages of leaf miner mines followed the same trend as infested leaves.
- Intervention effect Increasing the nitrogen fertilization dose increased the percentages of leaf miner infested leaves and mines.
- Association Dead hearts caused by the stem borer decreased across the May, June and July plantings (7.2, 6.6 and 4.6 %).
- Association Stem borer infestation increased with nitrogen level.
- Recommendation Sowing rice early (during May) with moderate nitrogen (69 kg N/fed.) is recommended to avoid severe leaf miner and stem borer infestations.