TY - JOUR ID - 33971 TI - Non Chemical Management of Weeds Effects on Forage Sorghum Production JO - International Journal of Advanced Biological and Biomedical Research JA - IJABBR LA - en SN - 2383-2762 AU - Gholami, Samaneh AU - Minbashi, Mehdi AU - Zand, Eskandar AU - Noormohammadi, Ghorban AD - Department of Agronomy, Science and Research Branch, Islamic Azad University, Tehran, Iran AD - Department of Weed Research, Plant Protection Research Institute AD - Department of Agronomy, Science and Research Branch, Islamic Azad University, Tehran, Iran Y1 - 2017 PY - 2017 VL - 5 IS - 4 SP - 185 EP - 190 KW - Non chemical management KW - weed control KW - Forage sorghum KW - cultivation KW - Plants density KW - Plants pattern DO - 10.26655/ijabbr.2017.9.6 N2 - To assess the effect of non chemical management of weed control on forage Sorghum (Sorghum bicolor) a field study was conducted in Varamin, Iran during 2010 crop year in a three- replicated- split factorial experiment laid out in randomized complete block design with four weeding levels (W1= one time cultivation at 3-leaf stage using a duck foot cultivator, W2= two times cultivation at 3 and 5-leaf stages using a duck foot cultivator, W3= hand weeding throughout growing season and W4= without weeding) as main plots, and two plant density levels (D1= 190000, and D2= 266000 plant ha-1) and two plant pattern levels (P1= one-row and P2= two-row) as sub plots. Weed density, weed biomass, number of leaves (NL), stem diameter (SD), number of tillers (NT), plant height (PH), leaf area index (LAI), dry matter yield (DM yield), dry matter digestibility (DMD), water soluble carbohydrates (WSC), crude protein (CP), acid detergent fiber (ADF), total ash (ASH), and crude fiber (CF) where measured. The results revealed that the highest weed density and biomass observed in not weeding treatment. There was not significant difference among one time cultivation at 3-leaf stage and two times cultivation at 3 and 5-leaf stages from the weed density and biomass point of view. The lowest NL, SD, and NT observed in not weeding treatment. Increasing plant density decreased DM yield, PH, SD and NL of sorghum. Two-row plant pattern showed a significant preference in comparison to one-row plant pattern from the DM yield point of view although the highest CP obtained in one-row plant pattern. The highest DMD obtained in P2D2. The highest ASH obtained in W2D2 and W2P2 UR - https://www.ijabbr.com/article_33971.html L1 - https://www.ijabbr.com/article_33971_2452ea69d99733d72e6f6c0e0567ba62.pdf ER -