Articles

Effect of Different Levels of Nitrogen on Growth and Yield of Flax under Kabul Agro-Ecological Conditions

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Flax is among the most significant industrial oilseed crops in the world, as well as in Afghanistan.  It is high in health-promoting fatty acids. However, its yield and quality are low owing to poor nitrogen fertilizer use and lack of improved cultivars in Afghanistan. Hence, a field trial was conducted at the Research Farm of the Agriculture Faculty of Kabul University during the main cropping season of 2025 to evaluate four nitrogen rates (0, 50, 100, and 150 kg/ha). The study was conducted using a randomized complete block design (RCBD) arrangement with four replications. The size of each experimental unit was 2 m × 2 m (4 m2), with six rows. Distances of 30 cm and 40 cm were left between plots and blocks, respectively. The spacing between rows was 30 cm, and the spacing between plants was 15 cm. Significant differences were observed in the different levels of nitrogen on plant height, number of capsules per plant, number of branches per plant, number of seeds per capsule, 1000-seed weight, length of roots, biological yield, grain yield, and straw yield. However, the results showed that the 100 kg N/ha fertilization level significantly outperformed in number of seeds per capsule, number of capsules per plant, 1000-seed weight, and seed yield. Meanwhile, the 150 kg N/ ha fertilization level excelled in plant height and number of branches per plant, biological yield, and straw yield.

Effect of Biomineral Sources Combination on the Agronomic Character of Shallot (Allium ascalonicum L.) in the Offseason

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This study aims to analyse the effects combination of compound fertilizer and  rhizobacteria sources on the agronomic characters of shallot in off season. The study was conducted in Sleman, Yogyakarta from February to June 2019. The experiment was arranged in a R C B D with three replications. The treatment consisted of combination  between compound fertilizer (AS) first factor was dosage (150, 250 and 350 kg ha-1) and 5%  rhizobacteria from different three sources (rhizobacteria bamboo, rhizobacteria glyricidae and rhizobacteria peanut) each concentrasion and control. The observed were made on the growth and yield of bulb, and the data were analyzed using analysis of variance and Duncan’s Multiple Range Test at P< 0.05. There was no interaction between indigenous rhizobacteria sources and AS fertilizer on all variables. The dosage of  AS fertilizer up to 350 kg ha-1 did not improve the plant growt. However, there was an increase in bulb yield when 150 kg ha-1 at AS was applied. The application of indigenous rhizobacteria from bamboo root significantly increased the growth of shallot. The application of AS 150 kg ha-1 combined indigenous rhizobacteria  bamboo root at 5% is recomended to promote shallot production in offseason  as well as to minimize the  input cost of inputs and environmental pollution.