New Approach for Controlling Broomrape Plants in Faba Bean

Abstract

To improve controlling Broomrape (Orobanche crenata) grown in faba bean crop via new approaches as planting modern cultivars under different times of spraying Roundup ® ((glyphosate 48% WSC)) as herbicide and foliar application of some micronutrients (Fe, Mn and Zn), was conducted in a private farm in El-Horreya village, Abou El-Matamir, El-Behira governorate, Egypt, during two successive winter seasons of 2012/2013 and 2013/2014 in sandy loam soil. The experimental design was a split-split plot design with three replications, where as the treatments were distributed at random as follows; Roundup ® (glyphosate) spraying times (without, one time, or two times) were applied at main plots, while foliar spray of micronutrients (Fe, Mn and Zn) were allocated in the subplots and field bean cultivars (Nubaria1, Nubaria 2 or Nubaria 3) were located in the sub-sub plot. The main results indicated that spraying Roundup ® (glyphosate 48% WSC) twice where, the first spraying applied beginning the flowering while the second spraying was applied after two weeks from the first treatment at 180 cm 3 (Roundup)/480 L (water)/ha.), caused significant increase of faba bean yield and reduced number and weight of broomrape as compared with other treatments. "Nubaria 2" cultivar achieved the highest mean values for most of yield characters, while the cultivar Nubaria 3 gave the lowest values. On the other hand, spraying micronutrients 2 times after 45 and 60 days from sowing achieved higher yield and its components of faba bean under the study condition in El-Behira Governorate, Egypt.