Abstract:
Broomrape (Orobanche ramose L.) is a problematic weed poses a significant threat to tomato production globally. The efficient management of broomrape is challenging because of its complicated parasitic nature. Despite the growing interest in implementing effective weed management practices; there is still a lack of strategies for broomrape control. Therefore, this study aims to address these gaps by investigating the integrated effect of weed management practices and irrigation rates on broomrape development and tomato yield. The experiment was conducted with a randomized complete block design (RCBD) with a split-plot arrangement and was replicated three times. Three irrigation intervals (3, 6, and 9 days) were assigned to the main block, while sub-blocks including treatments and year were taken as the source of variance (year × irrigation timing × treatments). The experiment comprised sixteen treatments, including transparent polythene, black polythene, weedy check (Control), sole weeding of broomrape only, weeding of all weeds, weeding except broomrape, humic acid 25 kg ha-1+ copper oxychloride (COC) in single/split doses, COC single/split doses, ammonium sulphate 200 kg ha-1 (single/split doses), copper sulfate 2 kg ha-1 (single/split doses), and glyphosate 48 SL (1.5 kg a.i ha-1) and pendimethalin 33 EC (1.44 kg a.i ha-1). The results revealed that highest broomrape intensity (4.34 plant-1) was observed with 9-day irrigation interval which substantially reduced tomato yield. Whereas, 06 days irrigation interval considerably increased tomato yield by 30% with highest Cost benefit ratio (CBR): 1: 4.6. Likewise, among the weed management strategies black polyethylene decreased Orobanche intensity by 67%, and obtained a highest CBR (1: 4.60). The highest weed control efficiency (WCE 97 %) was obtained for black polyethylene and pendimethalin (90 %). It is concluded that the Orobanche infestation substantially decreased with increase in irrigation frequency. Furthermore, irrigation practices at 06 days interval together with black polyethylene and pendimethalin revealed the lowest broomrape incidence and produced an economic yield.
Page(s):
29-29
DOI:
DOI not available
Published:
Journal: Abstract Book on International Conference on Sustainable Agriculture and Food Security, August 27-31, 2023 , Volume: 0, Issue: 0, Year: 2023
Keywords:
irrigation scheduling
,
parasitic weed
,
tomato yield
,
sustainable broomrape management
,
costbenefit analysis