TY - JOUR
AU1 - Bhatt, Rajan
AU2 - Verma, Krishan K.
AU3 - Jamwal, Navdeep S.
AB - Paddy straw burning and its consequences on the ecosystem forced to reuse of this paddy compost (PC) in long-standing sugarcane crops, which also supposes to reduce the N fertilizations. To date, no such study has been carried out in the region where differential reductions of N fertilizers were tested with a fixed PC dose in terms of their effects on the sugarcane growth, yield, and quality parameters. Keeping this under consideration, present experiments were carried out at the Research Station of Punjab Agricultural University. Ludhiana, Punjab, India, of regional level situated at Kapurthala district during Spring 2021–2022 season in randomized block design under different treatments, viz. T1: 25% higher N than RDN + 5.5 qt PC ha−1; T2: RDN + 5.0 qt PC ha−1; T3: 15% reduction in RDN + 4.5 qt PC ha−1; T4: 25% reduction in RDN + 4.0 qt PC ha−1. Cane germination decreased to the tune of 6.7, 10.5, and 13.9% in the T2, T3, and T4 treatments as compared to the T1 plots. Periodic brix (°) at 283, 300, and 318 DAP as compared to the T1 plots, in the T2, T3, and T4 plots reduced to the tune of 1.3, 0.3, and 4.9%; 3.6, 5.0, 2, and 3.3%; and 2.1, 2.3 and 2.9%. Nodes per cane as compared to T1 plots recorded to significantly decrease to the tune of 6.5, 5.8, and 10.6%; and 1.2, 0.9, and 5.5%, respectively, at T2, T3, and T4 plots with similar but statistically at the par response at 100 and 147 DAP. Chlorophyll content as recorded by the SPAD meter reported to decrease to the tune of 8.8, 9.2, and 7.1%; 6.9, 11.9, and 17.5 in T2, T3, and T4 plots at 216 and 243 DAP in comparison with T1 plots with a similar but at par values at 63, 112 and 162 DAP, respectively. However, normalized difference vegetation index (NDVI) readings as recorded through Green Seeker reported to significant decrease to the tune 7.7, 9.2, and 21.1% and 8.0, 9.8, and 10.9% in T2, T3, and T4 plots as compared to T1 plots with a similar but at par trends at 90, 146, and 304 DAP, respectively. In the 12th month, among cane quality parameters, only Brix and Pol reported significant reductions to the tune of − 3.6, 1.1, and 1.8% and − 1.4, − 0.1, and 2.7%, respectively, in T2, T3, and T4 plots while all followed the similar but at par trends as compared to T1 plots. Root length density and cane yield were reported to be significantly reduced to 0.4, 0.5, and 3.0%; and 5.9, 16.9, and 31.6% in T2, T3, and T4 plots compared to T1 plots, respectively. According to reports, the sugar yield (t ha−1) in the spring season was significantly lower in T2, T3, and T4 plots than in T1 plots by amounts of 5.6, 16.5, and 35.8%, respectively. Finally, 25% higher than RDN + 5.5 qt PC ha−1 was reported with significantly higher sugarcane yield and quality parameters at sandy loam N-deficient soils of the region.
TI - Can Paddy-Compost Eliminate N Fertilization for Climate-Smart Sugarcane?
JF - Sugar Tech
DO - 10.1007/s12355-023-01270-3
DA - 2023-10-01
UR - https://www.deepdyve.com/lp/springer-journals/can-paddy-compost-eliminate-n-fertilization-for-climate-smart-WbKbidMMO4
SP - 1036
EP - 1046
VL - 25
IS - 5
DP - DeepDyve
ER -