Abstract
A field experiment was carried out at two sites (Erbil and Mosul) in winter season 2017-2018, to study the effect of three different seed size (small, medium and large) of local broad bean planted in three sowing depths (5, 10 and 15 cm) using three levels of phosphate fertilizer (zero, 75 and 150 kg P2O5. ha-1) in yield and yield components. The experiment executed according to the (R.C.B.D) design and Duncan Multiple range used to compare between treatment means. The results showed that there was no significant effect of seed sizes in most studied traits; The pod length, 100 seeds weight and seeds yield were surpassed at depth (15 cm) at both sites. The number of pods / plant, 100 seeds weight, seeds yield, and biological yield increased significantly at the second and third fertilization levels at both sites. Pod length, number of seeds / pod and harvest index have exceeded significantly in the second level of fertilization at both sites. The second order interactions showed significant differences between most studied characters. A field experiment was carried out at two sites (Erbil and Mosul) in winter season 2017-2018, to study the effect of three different seed size (small, medium and large) of local broad bean planted in three sowing depths (5, 10 and 15 cm) using three levels of phosphate fertilizer (zero, 75 and 150 kg P2O5. ha-1) in yield and yield components. The experiment executed according to the (R.C.B.D) design and Duncan Multiple range used to compare between treatment means. The results showed that there was no significant effect of seed sizes in most studied traits; The pod length, 100 seeds weight and seeds yield were surpassed at depth (15 cm) at both sites. The number of pods / plant, 100 seeds weight, seeds yield, and biological yield increased significantly at the second and third fertilization levels at both sites. Pod length, number of seeds / pod and harvest index have exceeded significantly in the second level of fertilization at both sites. The second order interactions showed significant differences between most studied characters. Key words: broad bean, yield, sowing depth, phosphorus fertilization.
Highlights
Broad bean (Vicia faba L.) is one of the most important legume crops, it is the cheapest source of protein used in poor countries, the protein percent of in the seeds ranged between (25-40%) (Natalia et al, 2008), the seeds have high contain about percent (56%) carbohydrate, minerals, fibers and vitamins in addition to its benefit of raising soil fertility (Carmen et al, 2005)
Mekkei (2014) found a significant superiority of plants grown from large seeds comparing with medium and small seeds in 100 seed weight and seed yield, but the seed size did not affect the number of pods /plant, number of seeds /pod, biological yield, and harvest index
The current study aims to find the effect of treatment combination of three size different seed planted in three depths (5, 10, 15 cm) with three levels of phosphate fertilization (0, 75 and 150 kg P2O5. ha-1) on yield and yield components of the local broad bean crop
Summary
Broad bean (Vicia faba L.) is one of the most important legume crops, it is the cheapest source of protein used in poor countries, the protein percent of in the seeds ranged between (25-40%) (Natalia et al, 2008), the seeds have high contain about percent (56%) carbohydrate, minerals, fibers and vitamins in addition to its benefit of raising soil fertility (Carmen et al, 2005). Mekkei (2014) found a significant superiority of plants grown from large seeds comparing with medium and small seeds in 100 seed weight and seed yield, but the seed size did not affect the number of pods /plant, number of seeds /pod, biological yield, and harvest index. Ha-1) in yield and yield components of broad bean, the researcher did not notice any significant differences between all levels of fertilization on the number of pods / plant, 100 seed weight and seeds yield. The current study aims to find the effect of treatment combination of three size different seed (small, medium and large) planted in three depths (5, 10, 15 cm) with three levels of phosphate fertilization The current study aims to find the effect of treatment combination of three size different seed (small, medium and large) planted in three depths (5, 10, 15 cm) with three levels of phosphate fertilization (0, 75 and 150 kg P2O5. ha-1) on yield and yield components of the local broad bean crop
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