Late (summer) planting of sugarcane is very much common in subtropical India. Due to the adoption of sugarcane–ratoon–wheat cropping system in the region, sugarcane planting is delayed. Delay in planting of sugarcane reduces the period of tillering. Thus to improve tillering, growth, and yield of late-planted sugarcane, a field experiment was conducted to assess the four levels of seed cane material (S₁: conventional 3 bud setts, S₂: sett soaking in water for 4 h S₃: sett soaking in 100 ppm ethrel solution for 4 h and S₄: foliar application of 100 ppm ethrel and mixture of 1% urea on seed cane, one week before planting) and two levels of NPK fertilizers with and without microbial consortia (M₁: 50% of recommended NPK with microbial consortia (Pseudomonas fluorescens (phosphate-solubilizing bacteria) + Gluconacetobacter + Trichoderma); M₂: Recommended NPK (150 kg ha⁻¹, 25 kg ha⁻¹, 50 kg ha⁻¹ without microbial consortia). Foliar spray of ethrel increased total N uptake by 47.27% at the harvest stage (145.9 kg ha⁻¹). An improvement of 36.40% in P accumulation was recorded with foliar application of ethrel on seed cane as compared to control during the tillering phase. However, P improvement in stalk increased to the level of 18.71 kg ha⁻¹ at harvest stage. Foliar spray of ethrel accumulated 33.04% higher K than control (124.4 kg a⁻¹) at harvest. About 26.16% improvement in individual cane weight was recorded with foliar application of ethrel. Thus, foliar application of ethrel improved sugarcane (73.15 t ha⁻¹) and sugar yield (8.55 t ha⁻¹). Integrated use of microbial consortia and 50% of recommended NPK could bring forth 9.85% (68.48 t ha⁻¹) and 7.86% (8.10 t ha⁻¹) improvement in sugarcane and sugar yields over the recommended NPK in summer-planted sugarcane in subtropical India.

在亚热带印度，晚期（夏季）种植甘蔗非常普遍。由于该地区采用了甘蔗-松树-小麦种植系统，甘蔗种植被推迟。推迟种植甘蔗可缩短分till期。因此，为提高分late，生长和后期种植甘蔗的产量，进行了田间试验，以评估种子甘蔗材料的四个水平（S ₁：常规3个芽生菜，S ₂：在水中浸泡4 h S ₃：在100 ppm乙醛溶液中浸泡4小时和S ₄：在播种前一周在种子茎上叶面施用100 ppm乙醛和1％尿素的混合物）和两种水平的有或没有微生物菌群的NPK肥料（M ₁：推荐的NPK与微生物菌群的比例为50％（荧光假单胞菌（可溶解磷酸盐的细菌）+ 糖醋杆菌 + 木霉属）；中号₂：推荐NPK（150公斤公顷^-1，25公斤公顷^-1 50千克公顷^-1无微生物聚生）。在收获期（145.9 kg ha ^-1），叶面喷洒ethrel使总氮吸收增加了47.27％。与分control期对照相比，在种子甘蔗上叶面喷施乙醛可提高磷积累量36.40％。但是，秸秆中的磷改善量增加到18.71 kg ha ^-1的水平在收获阶段。收获时，叶绿素的叶面喷洒积累的K比对照（124.4 kg a ^-1）高33.04％。叶面喷施乙醛可提高个体甘蔗重量约26.16％。因此，叶面喷施乙醛改善了甘蔗（73.15 t ha ^-1）和糖产量（8.55 t ha ^-1）。与亚热带夏季种植的甘蔗的推荐氮磷钾相比，微生物群落和建议氮磷钾的50％的综合使用可使甘蔗和糖产量分别提高9.85％（68.48 t ha ^-1）和7.86％（8.10 t ha ^-1）。印度。