Giri Krishna, Mishra Gaurav, Chandra Suyal Deep, Kumar Narendra, Doley Bhanushree, Das Niren, Baruah Rupjyoti C, Bhattacharyya Rajarshi, Bora Navajyoti
Rain Forest Research Institute, Jorhat, 785 010, India.
Centre of Excellence on Sustainable Land Management, Indian Council of Forestry Research and Education, Dehradun, 248 006, India.
Heliyon. 2023 Mar 14;9(3):e14588. doi: 10.1016/j.heliyon.2023.e14588. eCollection 2023 Mar.
The present study was carried out to evaluate the performance of native plant growth-promoting rhizobacteria (PGPR) on jhum paddy yield enhancement in Nagaland, Northeast India. Three indigenous PGPR isolates ( MKGB, MKGPf, and MKGAz) were tested in the soil microcosm and jhum fields of Longkhum and Ungma villages in Mokokchung, Nagaland. The maximum 78.44% seed germination, 165 cm plant height, 30 leaves, 5 tillers, and 5 panicles per plant were recorded in the PGPR consortium inoculated pot soil. Similarly, maximum 151 grains per panicle, 21.66 g grain yield per plant, and 33.50 g of straw biomass were recorded in the same treatment. The observations from the field trials revealed a maximum of 4.67 t ha paddy yield in the Longkhum village jhum field inoculated with the PGPR consortium which was significantly different from the control (T1) at a p value of ≤0.05%. Similarly 4.74 t ha paddy yield was obtained from the PGPR consortium applied jhum plots in Ungma village. The PGPR consortium was found more effective and promising than the single culture inoculation in paddy yield enhancement. The study suggests the application of tested PGPR consortium in jhum fields for soil health and crop productivity improvement and achieving agricultural sustainability as well as social prosperity in the rural areas of North East India.
本研究旨在评估印度东北部那加兰邦本土植物促生根际细菌（PGPR）对刀耕火种稻田产量提高的作用。在那加兰邦莫科孔县隆昆村和翁马村的土壤微观世界及刀耕火种田地中，对三种本土PGPR分离株（MKGB、MKGPf和MKGAz）进行了测试。在接种了PGPR菌剂组合的盆栽土壤中，记录到最高种子发芽率为78.44%、株高165厘米、30片叶子、每株5个分蘖和5个稻穗。同样，在相同处理中记录到每穗最多151粒、单株籽粒产量21.66克以及稻草生物量33.50克。田间试验的观察结果显示，在隆昆村接种了PGPR菌剂组合的刀耕火种稻田中，水稻产量最高达到4.67吨/公顷，在p值≤0.05%时，与对照（T1）有显著差异。同样，在翁马村施用PGPR菌剂组合的刀耕火种地块中，水稻产量为4.74吨/公顷。发现PGPR菌剂组合在提高水稻产量方面比单一培养接种更有效且有前景。该研究表明，在刀耕火种田地中应用经测试的PGPR菌剂组合，可改善土壤健康和作物生产力，实现印度东北部农村地区的农业可持续发展以及社会繁荣。
