Integrated Nitrogen Management in Increasing Yield and Economic Profitability of Broccoli (Brassica oleracea var. italica L.)

Md. Jamal Hussain, A.J.M. Sirajul Karim, A.R.M. Solaiman, Md. Monirul Islam, Md. Shafiqul Islam, Laila Naher
2020 Sains Malaysiana  
The experiment was conducted at Bangabandhu Sheikh Mujibur Rahman Agricultural University during the period of November 2014 to April 2015 with a view to assess the combined effect of inorganic and organic sources of nitrogen on yield of broccoli and to develop a combined dose under integrated plant nutrition system (IPNS) for broccoli production. Four levels of Nitrogen (N) as 140, 160 and 180 kg N ha -1 as urea super granules (USG) and 180 kg N ha -1 as prilled urea (PU) as well as three
more » ... rent organic nitrogen sources (IPNS based) were considered to comprise 24 treatments combinations. The experiment was laid out in a randomized complete block design with three replications. USG along with organic manures showed better yield performance regarding yield attributes and yield compared to PU. The highest head yield (14.7 t ha -1 ) was found in USG-N 160 kg/ha + Oil Cake (OC) 2t/ha followed by USG-N 180kg/ha + OC 2t/ha (14.5 t ha -1 ). The maximum lateral head yield (6.612 t ha -1 ), marginal rate of return (132) , and benefit cost ratio (4.00) were recorded in USG-N 160kg/ha + Poultry manure (PM) 3t/ha . The treatment PU-N 180 +PM 3 also showed better performance regarding yield (13.7 t ha -1 ), harvest index (27.1%) and benefit cost ratio (BCR) (3.84). (USG) dan 180 kg N ha -1 sebagai urea prill (PU) serta tiga nitrogen organik berbeza sumber (berasaskan IPNS) telah diambil kira terdiri daripada 24 gabungan rawatan. Uji kaji tersebut telah dibentangkan dalam reka bentuk blok lengkap dengan tiga replikasi. USG berserta baja organik menunjukkan prestasi hasil yang lebih baik daripada atribut hasil dan hasil berbanding PU. Prestasi tertinggi hasil kepala (14.7 t ha -1 ) telah ditemui dalam USG-N 160 kg/ha + kek minyak (OC) 2t/ha diikuti oleh ). Hasil maksimum sisi kepala (6.612 t ha -1 ), kadar pulangan marginal (132) dan nisbah kos manfaat (4.00) telah direkodkan dalam USG-N 160kg/ha + baja ayam (PM) 3t/ha . Rawatan PU-N 180 + PM 3 juga menunjukkan prestasi yang lebih baik mengenai hasil (13.7 t ha -1 ), indeks tuaian (27.1%) dan nisbah kos faedah (BCR) (3.84). Oleh itu, USG @ 160 kg N ha -1 + 3 t ha -1 baja ayam seperti yang dilaraskan N 126 P 22 K 62 S 14 Zn 2 B 1 MO 0.8 kg/ha + 3 t/ha PM atau PU @ 180 kg N ha -1 + 3 t/ha baja ayam seperti yang dilaraskan N 146 P 22 K 62 S 14 Zn 2 B 1 MO 0.8 kg/ha + 3 t / ha PM boleh disyorkan untuk pengeluaran brokoli dalam tanah Teres Kelabu. ABSTRAK Suatu uji kaji telah dijalankan di Universiti Pertanian Bangabandhu Sheikh Mujibur Rahman antara November 2014 hingga April 2015 dengan tujuan untuk menilai kesan gabungan sumber tak organik dan organik nitrogen kepada hasil brokoli dan untuk membangunkan dos gabungan di bawah sistem integrasi nutrisi tanaman (ipns) untuk pengeluaran brokoli. Empat tahap Nitrogen (N) iaitu 140, 160 dan 180 kg N ha -1 sebagai urea super granul
doi:10.17576/jsm-2020-4902-05 fatcat:gypdcsfm2zgtjoxtg2qae4vjna