The production of maize, a major staple food crop in sub-Saharan Africa is being constrained by the
parasitic weed Striga hermonthica. The fungus Fusarium oxysporum f. sp. strigae (Foxy 2) that causes fusarium
wilt of Striga in Ghana, West Africa, is being considered for biological control of the weed in Western
Kenya. The present study investigated the efficacy of F. oxysporum f. sp. strigae (Foxy 2) for S. hermonthica
management in Western Kenya. Research was conducted in post-entry quarantine (PEQ) facilities at
Alupe, Busia, Homabay, Kibos and Siaya field stations for two seasons. Each PEQ was a split-plot, with
4 main blocks each having 6 treatment subplots. The treatments included seeds of two S. hermonthicasusceptible
maize varieties, either coated with Foxy 2 using gum Arabic, gum Arabic alone, or left
untreated. Data was collected over seven sampling periods on S. hermonthica population per plant,
percentage of those that were wilting, and the severity of wilting. Maize plant growth parameters
assessed included duration to 50% anthesis and 50% silking, plant height, number of leaves, stover and
cob weights, and maize yield per hectare. Statistical analysis was done using SAS 9.1 software. Data on
S. hermonthica population were analyzed by v2
-test using Proc Genmod (Poisson); while the other parameters
were analyzed by Proc Mixed using study location, season and blocks as random effects, and the
sampling periods as repeated effects. All the assessed parameters were similar between plants grown
from seeds inoculated with F. oxysporum f. sp. strigae (Foxy 2), those coated with gum Arabic, and the
ones without any coating. These parameters were also not different between the maize varieties. There
The production of maize, a major staple food crop in sub-Saharan Africa is being constrained by theparasitic weed Striga hermonthica. The fungus Fusarium oxysporum f. sp. strigae (Foxy 2) that causes fusariumwilt of Striga in Ghana, West Africa, is being considered for biological control of the weed in WesternKenya. The present study investigated the efficacy of F. oxysporum f. sp. strigae (Foxy 2) for S. hermonthicamanagement in Western Kenya. Research was conducted in post-entry quarantine (PEQ) facilities atAlupe, Busia, Homabay, Kibos and Siaya field stations for two seasons. Each PEQ was a split-plot, with4 main blocks each having 6 treatment subplots. The treatments included seeds of two S. hermonthicasusceptiblemaize varieties, either coated with Foxy 2 using gum Arabic, gum Arabic alone, or leftuntreated. Data was collected over seven sampling periods on S. hermonthica population per plant,percentage of those that were wilting, and the severity of wilting. Maize plant growth parametersassessed included duration to 50% anthesis and 50% silking, plant height, number of leaves, stover andcob weights, and maize yield per hectare. Statistical analysis was done using SAS 9.1 software. Data onS. hermonthica population were analyzed by v2-test using Proc Genmod (Poisson); while the other parameterswere analyzed by Proc Mixed using study location, season and blocks as random effects, and theรอบระยะเวลาการสุ่มตัวอย่างเป็นผลซ้ำ พารามิเตอร์จากการประเมินทั้งหมดคล้ายกันระหว่างพืชที่ปลูกจากเมล็ด inoculated กับ F. oxysporum f. sp. strigae (เจ้าเล่ห์ 2), ผู้ที่เคลือบ ด้วยกาวอาหรับ และคน โดยไม่มีการเคลือบใด ๆ พารามิเตอร์เหล่านี้ก็ยังไม่แตกต่างกันระหว่างพันธุ์ข้าวโพดเลี้ยงสัตว์ มี
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