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Effect of Nitrogen and Sulfur in Growth and Yield in Onion Plant (Allium cepa L.) | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 18, Issue 1, 2018, Pages 89-98 | ||
| Authors | ||
| Abullah. A. Korsheed; Jamel. Y. A. Altememe | ||
| Abstract | ||
| This study was carried out in the station of Agricultural College / Kirkuk University at the season (2015-2016) on the Onion plant to study the effect of Nitrogen at four levels (0,60,80,100 kgN.ha-1) and add nitrogen fertilizer in urea (46% nitrogen) (NH2) CO2 on the on the first two steps after the arrival of the plant height (10cm) and the second after the first batch of three weeks and the fertilization of the first batch on 6/5/2016 and the second batch on 27/5/2016 , and Sulfur three levels (S0 without soil fumigation with sulfur ) (S1 Soil fumigation with agricultural sulfur purity94% and 1000kg.ha-1) (S2 Soil fumigation with agricultural sulfur (purity 94%) and 1000 kg.ha-1) The sulfur fertilization was added to the plants when the plants reached the height of (10 cm) and the same quantity was added to the plants and the soil in the vegetative growth stage (10 cm) high, Field of sulfur before planting for five days, the second batch of sulfur was added on 27/5/2016 in the characteristics of growth and harvest . The experiment was designed in (RCBD) with four replication , then all of the data was analysied statically and the means of the treatment were compared by multiple Duncan test at (0.05%) probability level where the F test was significant .The results summarized as follow :- Level fertilization (60kgN.h-1) was surpassed with highest values in plant height (48.217 cm) , the level of fertilization (80kgN.h-1) gave highest value in leaf area trait (72.746 cm2) , number of tuber leaves (18.469) and dry matter percentage (16.871%) the treatment which it is soil was sprayed with sulfur (1000kg.h-1) was surpassed with highest in leaf area (61.763cm3) and percentage of dry matter (16.540%) . The interaction between nitrogen fertilization and sulfur addition was significant , the treatment (80kgN.h-1 ) was distinguished which not treated with the sulfur gave highest value in plant height (50.315 cm) and percentage of dry matter (17.000%) which the treatment which fertilization by (80kgN.h-1) and sprayed it soil with the sulfur gave highest values in leaf area (78.125 cm2) . The treatment (80kgN.h-1) was surpassed in the weight of onion (57.428 gm) , onion length (11.663 cm) and total yield (7.466 ton.h-1) . fertilization by (100kgN.h-1) gave highest values in onion size (112.50 cm3) and onion diameter (5.445 cm) , also the sulfur additions had significant effects in yield trait which the addition of sulfur was surpassed as soil spray and the separation of the plant with highest values in the onion weight (53.489 gm) , onion diameter (5.329 cm) and total yield (6.954 ton.ha-1) . The treatment which not treated with the sulfur was surpassed and gave highest value in the onion length (11.215 cm) and duplication (14.563) , while the in traction had significant effect in onion yield which distinguished the treatment (80kgN.h-1) and sprayed to soil with the sulfur with highest value in onion weight (62.395 gm) , onion length (11.755 cm) and total yield (8.111 ton.ha-1) while the treatment (100kgN.h-1) which not treated) . with sulfur gave highest value in onion diameter trait (5.720 cm). | ||
| Keywords | ||
| Onion; nitrogen; Sulfur; Growth; Yield | ||
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