Effect of sowing dates, varieties and glyphosate application on broomrape (Orobanche crenata Forsk ) and yield of faba bean (Vicia faba L.).
Abstract: Two field experiments were conducted during 1999/2000 and 2000/01 winter seasons in naturally Orobanche infested soil at Sids Agricultural Research Station to study the effect of sowing dates (1st, 15th and 30th Nov.), faba bean varieties (Giza429 and Yousef El-Sedeak) and different times of Roundup application on the number and dry weight of broomrape; growth, seed yield of faba bean and its components.
Sowing faba bean in 15th and 30th November decreased broomrape infestation by 31 and 88 and 96 % as compared with the 1st of November in both seasons, corresponding to increases in seed yield of faba bean of 108 and 123 and 105 and 132 percent, respectively.
Giza 429 variety was less infested than Yousef El-Sedeak with by 47 and 70 % (dry weight/m2) of with increases in seed yield/fed. by 123 and 128 % accompanied with improvement in yield components.
Application of Roundup (glyphosate at the rate of 75 cm3/fed. at two or three spray gave 98and 96 % and 99.8 and 99% reduction of broomrape and increased seed yield by 166 and 153 % and 133 and 130 % as compared with untreated check in two seasons.
The interaction between sowing dates and varieties were statistically significant on the number and dry weight of broomrape in the second season and seed yield in both seasons. The highest seed yield was obtained from sowing at 30th Nov. and Giza 429 variety in both seasons.
The interaction between sowing dates and Roundup application was very effective on decreasing the number and dry weight of broomrape and increased seed yield in both seasons. The lowest number, dry weight of broomrape were obtained from the first sowing date (1st Nov.) and application Roundup three times, but, the highestseed weight (g/plant) and seed yield resulted from the second sowing date (15th Nov.) and Roundup application three times.
Giza429 variety and the application of Roundup three times gave the lowest number and dry weight of broomrape, highest seed weight/plant and seed yield/fed. The lowest number, dry weight of broomrape resulted from the interaction between sowing date (15th Nov.), Giza 429 variety and the application Roundup three times.
The highest seed weight/plant and seed yield/fed. were obtained from the interaction between sowing date (15th Nov.), Giza 429 variety and the application Roundup three times in the first season. The lowest seeds weight/plant and seed yield was obtained from the interaction between the sowing of Yousef El-Sedeak variety on the 1st of Nov. without Roundup in both seasons.
Publication year 2003
Pages pp. 1-18
Organization Name
Country Egypt
City Cairo
Publisher Name: Bull. Fac. Agric., Cairo Univ.
ISSN 0526 - 86
Volume 54 .
Author(s) from ARC
Agris Categories Agricultural research
AGROVOC
TERMS		 Control methods. Faba beans. Orobanche crenata. Variety trials. Yield components.
Publication Type Journal
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