تأثير مواعيد الزراعة و المسافة بين السطور في نمو و حاصل العلف و نوعيته لمحصول البلوبانك Panicum Virgatum L.

Abstract EN

A Field experiment was conducted at private farm located in Basrah – Zubair, during the spring season of 2017.

This study was carried out to investigate the effect of planting date (15/2, 1/3, 15/3, 1/4 and 15/4) and row spacing ( 15, 20 and 25) cm in growth, green fodder yield, dry fodder yield, and some quality characters for bluepanic ( panicum virgatum L.

).

Three clipping were taken.

The results showed that the fourth planting date (1/4) recorded the largest number of tillers ( 406.9 tillers m-2 ) as well as giving the largest quantity of green fodder in the three cuts ( 112.5 tons ha-1), dry fodder (11.8 ton ha-1) and the highest percentage of protein (16.3% ).

The lowest quantity of green and dry fodder was recorded at the first planting date (15/2).

The first planting date gave the highest percentage of fiber (26.5 % ).

The distance 20 cm between rows gave the highest values of number of tillers (403.6 tillers m-2), green fodder yield (114.7 ton ha-1 ), dry fodder yield (12.0 ton ha-1), and the highest percentage of protein (15.6% ).

The interaction between planting dates and row spacing showed significant effect on most studied traits.

The combination between the planting date at 1/4 and the distance 20 cm between rows gave the highest values for green fodder (126.9 ton ha-1) and dry fodder (13.3 tan ha-1).