In order to determine the critical period of weed damage in peanut a field experiment was laid out based on randomized complete block design (RCBD) with three replications in 2012. Treatments consisted of two series of weed interference and weed-free periods of 15, 30, 45, 60 and 75 days after planting of peanut. Full-season control of weeds and full-season interference of weeds were also included as control treatments. Seed yield was affected significantly by control and weed-free treatments. Increasing of weed interference periods decreased peanut seed yield, while increasing of weed control periods increased peanut seed yield. Mean comparisons showed that the highest (2100 kg.ha-1) and lowest (294 kg.ha-1) of peanut yield observed at full season weed-free and 75 days weed interference after planting, respectively. Full-season weeds interference reduced peanut yield by 81% compared with full season weed-free plots. Beginning and end of the critical period of weed damage were determined by Gompertz and Logistic equations with high accuracy (R2=0.96 and R2=0.95, respectively). Based on 5, 10 and 15% acceptable seed yield losses, the critical period of weed control were 9 to 76, 12 to 63 and 16 to 54 days after planting at Sari condition.
Kavosi, S., Abasii, R., Farahmandfar, E., & Mansoori, I. (2015). Critical Period of Weed Damage in Peanut (Arachis hypogaea L.) in Sari. JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION, 25(2.1), 87-97.
MLA
Sadegh Kavosi; Rahmat Abasii; Esfandiar Farahmandfar; Irandokht Mansoori. "Critical Period of Weed Damage in Peanut (Arachis hypogaea L.) in Sari". JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION, 25, 2.1, 2015, 87-97.
HARVARD
Kavosi, S., Abasii, R., Farahmandfar, E., Mansoori, I. (2015). 'Critical Period of Weed Damage in Peanut (Arachis hypogaea L.) in Sari', JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION, 25(2.1), pp. 87-97.
VANCOUVER
Kavosi, S., Abasii, R., Farahmandfar, E., Mansoori, I. Critical Period of Weed Damage in Peanut (Arachis hypogaea L.) in Sari. JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION, 2015; 25(2.1): 87-97.
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