000			04005nam a22002177a 4500
003			OSt
005			20240820161047.0
008			150204b xxu||||| |||| 00| 0 eng d
040			_cCPGS
082			_a633.1882
100			_aShylla, Emdor _93805
245			_aInfluence of residue management of rice cultivars on soil health and productivity of succeeding lentil (Lens esculentus) / _cby Emdor Shylla
260			_aUmiam : _bCPGS, CAU, _cc2014
300			_a[38], 119p. : _bill., some col. ;
440			_a[Agronomy, School of Natural Resource Management] _93806
520			_aRice based cropping system is the pre-dominant cropping system of North East India including Meghalaya. In Meghalaya after rice harvest the land mostly remain fallow due to extreme moisture deficit in upland and excess moisture in lowland owing to seepage from surrounding hillocks. There is a very good potential for cultivation of lentil after rice in lowland if appropriate resource conservation measures are adopted. Keeping this in mind, a field experimentation was conducted on “Influence of residue management of rice cultivar on soil health and productivity of lentil” in lowland rice fallow in mid altitude of Meghalaya with the objectives to identify suitable rice and lentil cultivars and appropriate residue management practices for enhancing productivity of rice-lentil system. Two rice cultivars, Shahsarang 1 (medium duration, HYV) and Mendri (long duration, local variety) were grown during the kharif season followed by two lentil cultivars i.e. DPl 81 and IPL 406 grown under three rice stubble management practices during the rabi season. The experiment was laid out in a double split design with two main plots (rice cultivars), two sub plots (lentil cultivars) and three rice stubble management practices (20 cm standing stubble, mulching and residue removal). The results revealed that there was no significant effect of rice cultivars on performance of lentil. However, the lentil yield was significantly influenced by lentil cultivars. IPL 406 recorded significantly higher yield (1.82 t ha-1), WUE (9.46 kg ha-1mm-1) and WP (3.30 kg m-1) compared to DPL 81. Among rice stubble management practices, mulching recorded significantly higher lentil yield (1.87 t ha-1), WUE (9.75 kg-1 ha-1 mm-1) and WP (3.40 kg m-3) compared to 20 cm SS and removal. Irrespective of rice and lentil cultivars, mulching recorded about 20.6% higher lentil yield compared to residue removal and 20 cm SS. Available N and K were higher under DPL 81 grown after Shahsarang 1 as compared to Mendri. Significantly higher available N, K and SOC was recorded under mulching compared to 20 cm standing stubble (SS) and removal. The soil resistance increased with soil depth and minimum resistance was recorded under mulching followed by 20 cm SS. Bulk density was lower under IPL 406 grown after Shahsarang 1 with the lowest BD recorded under mulching. The MWD and porosity was higher when lentil cultivars were grown after Mendri undermulching compared to 20 cm SS and removal. The soil moisture content and stock throughout the cropping season was recorded highest under mulching followed by 20 cm SS. The dehydrogenase activity (DHA) and soil microbial biomass carbon (SMBC) were significantly higher under mulching compared to removal and 20 cm SS. Higher net return and B:C ratio was recorded in IPL 406 after Shahsarang 1 and significantly highest return was recorded under mulching (` 86,049 ha-1) with a B:C ratio of 1.67 compared to residue removal (` 61,158 ha-1, 1.19).Thus growing of lentil (IPL 406) under mulching after HYV rice (Shahsarang 1) is a recommendable option for higher productivity, WUE, soil health and income. Keywords: Rice stubble management practices, rice fallow, soil health, lentil, system productivity.
650			_aRice cultivation _xSoil health _93807
650			_aLentil cultivation _xresidue management _zMeghalaya _93808
700			_aA.Das _eMajor Advisor _93809
942			_2ddc _cTH
999			_c4369 _d4369