1Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Thailand
2Department of Agricultural Extension and Agricultural Systems, Faculty of Agriculture, Khon Kaen University, Thailand
3Department of Land Resources and Environment, Faculty of Agriculture, Khon Kaen University, Thailand
*Corresponding Author: A. Laoken, Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Thailand. Email: iceman.aaa@hotmail.com
Online published on 17 March, 2023.
Rainfed lowland rice crops are grown only once a year in the rainy season. In general, the fields are left fallowed after harvest of rice in the dry season. Cassava a drought tolerant-crop has the potential to grow the following rice. One of the methods to sustain production is through the application of beneficial microorganisms such as plant growth-promoting rhizobacteria and foliar bio-extracted fertilizer.
Cassava was planted in the dry season (December-June). Nutrient management treatments included; 1) application of chemical fertilizer as recommendation rate (CFR), 2) application of CFR combined with plant growth-promoting rhizobacteria (PGPR), 3) application of 80% of CFR combined with PGPR and 4) application of CFR combined with bio-extracted pig manure (BPM) which laid out in randomized complete block design.
Interaction between CFR and PGPR gave the maximum storage root yield of 23.1 t ha−1 without significant differences with the application of CFR alone (20.3 t ha−1). Such treatment also provides higher net income than those of the other treatments in the present experiment.
Bio-fertilizer, Cassava, Plant growth promoting rhizobacteria, Rice-based cropping system
