Production Potential and Soil Fertility Status of Ratoon Sugarcane (Saccharum officinarum L.) as Influenced by Time and Level of Earthing Up and Nitrogen Levels in North-Eastern Uttar Pradesh, India

Abstract

A field experiment was carried out during the spring seasons of 2008-09 and 2009-10 at Varanasi, Uttar Pradesh to find out exact time of earthing up with level of earthing up and optimum doses of nitrogen for getting higher productivity, monetary returns, and changes in the fertility status of soils after harvest of ratoon sugarcane (Saccharum officinarum L.). Twentieth fifth April earthed crop produced significantly more height of tillers, leaf area index at maximum tillering stage, grand growth stage and at harvest, dry matter/tiller at maximum tillering stage at grand growth stage and at harvest, cane length, cane diameter of top, middle and bottom, weight of cane, cane yield, monetary returns, B/C ratio, N, P and K uptake except number of tillers/ha, number of millable cane/ha and net available soil nutrient after the harvest of ratoon crops as compared to 25 th May and 25 th June respectively. Twentieth cm height of earthing up from the ridge also significantly increased all the above parameters such as height of tillers, LAI of maximum tillering stage, grand growth stage and harvest, dry matter/tiller at maximum tillering stage, grand growth stage and at harvest, cane length, weight of cane and cane yield than that of 10 cm earthed crop in both the ratoon crops. Application of 210 kg N/ha linearly and significantly increased number of tillers/ha at 60 and 120 days after ratooning, height of tillers at 120 days after ratooning, LAI at maximum tillering stage, grand growth stage, and at harvest, dry matter/tiller at maximum tillering stage, grand growth stage and at harvest, number of millable cane, cane length, cane weight, cane yield, monetary returns, B/C ratio and N, P, K uptake followed by 180 kg N/ha. Ratoon crop showed that there was a build up of nitrogen and phosphorous but depletion in potassium content of the soil. 210 kg N/ha with earlier earthed at 25 th April to a level of 20 cm was found optimum for obtaining higher yields and monetary returns.

Influence of Planting Methods and Nitrogen Levels on Nutrient Uptake and Soil Fertility in Spring Planted Sugarcane

“…The highest uptake of nutrient in cane plant was recorded 347.5, 32.1, and 376 kg/ha of N, P and K, respectively. Sinha et al, (2017) and Dev et al, (2013) also noticed increase uptake of nitrogen by sugarcane (Table 3).…”

Sugarcane fertilization package with double row system to increase yield of first ratoon cane

“…[18] found 200N:120P:150 K fertilizer compound produced a maximum sugarcane height of 230.6 cm. Dev [19] stated that N 210 kg ha -1 has a higher influence on plant height than P and K. The average fertilizer dosage is presented in Table 2. 4 presents plant population per meter.…”

“…However, the total population significantly decreased after 9 MAR. The highest plant population was 15.25 plants per meter (high category) Dev [19]. Seema et al [20] mentioned that the combination of irrigation and high application of NPK fertilizer (250-160-200 NPK kg -1 ] produced 18.67 plants per meter.…”

Aplikasi Dua Paket Pupuk Majemuk pada Tanaman Tebu Ratoon yang Ditanam dengan Juring Tunggal dan Ganda

“…Hal tersebut terjadi sebagai akibat kedua paket tersebut mempunyai keterbatasan hara tersedia yang dibutuhkan untuk membentuk jumlah batang per m juring. Secara umum jumlah tanaman tebu per m juring mengalami peningkatan hingga umur 3 bulan setelah tanam dan pada umur selanjutnya mengalami penurunan hingga stabil pada umur 6 bulan setelah tanam (Dev et al, 2013). Jumlah batang per m juring tidak hanya dipengaruhi oleh faktor genotipe namun juga dipengaruhi oleh faktor lingkungan dan perlakuan yang diberikan (Singh et al, 2007;Gana, 2008).…”