تأثير الرش بالسماد البوتاسي و الهيومت السائل و عدد الرشات في نمو نبات الخردل الهندي Brassica juncea (L.)‎ Czern. and Coss و حاصل البذور

الملخص EN

An experiment was conducted during the growing seasons of 2011 / 2012 and 2012 / 2013 in private orchard at Abu Al- Khaseeb district, Basrah to study the effect of spraying with potassium, liquid humate, number of spraying and their interactions on growth and seeds yield of Indian mustard plant.

The study Included 18 factorial treatments, which were the combinations of three potassium concentrations 0, 1.5 and 3.0 mg.l.-1, three liquid humate concentrations 0, 35 or 70 mg.l.-1 and two spraying number one spray or two sprays.

Complete Randomized Block Design in a factorial experiment was used with three replicates.

Treatment means were compared according to the Least Significant Difference (LSD) at 0.05 level.

Results may be summarized as follows :- Plants sprayed with potassium at 3.0 mg l-1 had a significantly higher vegetative growth parameters(plant height, number of lateral branches.

Plant-1, leaf number.

plant-1 and fresh and dry weights of shoot.

plant-1), and also seed yield parameters (sequel weight.plant-1 89.4 and 95.5g, seed weight.plant-1 52.5 and 53.7g, weight 1000 seed 7.8 and 7.9g and productivity of seed.

hectare-1 1.874 and 1.919 tons for both growing seasons, respectively, the effect increased with the increase in the used fertilizer concentrations.

Plants sprayed with liquid humate at 70 mg l-1 had a significantly higher plant height and fresh and dry weights of shoot.

plant-1, sequel weight.plant-1 100.8 and 107.4g, seed weight.plant-1 54.8 and 57.6g, weight 1000 seed 7.9 and 8.0g and productivity of seed.

hectare-1 1.957 and 2.058 tons for both growing seasons, respectively.

Plants which sprayed two times had a significantly higher plant height, fresh and dry weights of shoot.

plant-1, sequel weight.plant-1 84.7 and 87.7g, seed weight.plant-1 46.1 and 47.3g, weight 1000 seed 7.3 and 7.4 g and productivity of seed.

hectare-1 1.650 and 1.690 tons for both growing seasons, respectively.

The Interactions between the studied factors, showed a significant effect in all studied parameters.