Response of Different Levels of Nitrogen on Growth and Yield of Cauliflower (Brassica oleracea var. botrytis) Varieties

Abstract

Nitrogen is the major limiting nutrient in commercial cauliflower production. The effects of six nitrogen doses (0, 70, 80, 90, 115, 130 kg N/ha) were evaluated in two cauliflower varieties (Snow Mystique and Khumal Jyapu) at the Institute of Agriculture and Animal Science, Lamjung Campus from September 2018 to January 2019. This experiment was carried out in a two factorial Completely Randomized Design with twelve treatments and five replications. FYM (25 t/ha), full dose of phosphorus (80 kg/ha) and potassium (60 kg/ha), and half dose of nitrogen were applied as a basal dose and the remaining half dose of nitrogen was applied in two equal split doses at 30 DAT and 60 DAT. The application of 130 kg N/ha gave superior results in plant height (26.32 cm), plant spread (4103 cm2), leaf area (264 cm2), stem diameter (1.96 cm), number of leaves (20.70), root length (26.26 cm), girth of curd (49.46cm) and adjusted yield (21.78 ton/ha). Similarly, the performance of the Snow Mystique variety was significantly superior as compared to Khumal Jypau in terms of growth and yield. Therefore, the combination of an optimum level of nitrogen (130 kg N/ha) and hybrid variety (Snow Mystique) could be recommended for the commercial production of cauliflower.

Effect of Transplanting Time and Nitrogen–Potassium Ratio on Yield, Growth, and Quality of Cauliflower Landrace Gigante di Napoli in Southern Italy

“…Probably, the higher nitrogen availability resulted in higher chlorophyll levels, which improves the plant capacity to convert light into energy for its growth and development. This hypothesis is consistent with the reports of Katuwal et al [34] who found that cauliflower plants subjected to different nitrogen levels showed an increase in head fresh weight, leaf area, and plant height, upon the augmentation of nitrogen supply. The latter is notoriously essential for the synthesis of proteins, which have a crucial role in the organization and functioning of plant cells, including the enzyme enhancement of all metabolic processes.…”

“…Further confirming the pivotal role of nitrogen, Katuwal et al [34] demonstrated that the application of 130 kg ha −1 N improved yield and biometrical parameters, including stem diameter and head girth.…”

Dynamics of bioactive substances accumulation during cauliflower maturation as a way to ensure functional crop properties

“…Under optimal growing conditions, including adequate soil nutrition, proper watering and pest control, the content of bioactive substances can be significantly increased [35][36]. The cauliflower harvesting time also plays an important role in ensuring its functional properties.…”