Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
recorded from randomly selected plants from with and without logwood bunding for taking
biometrical observations and yield calculation. In one hill 2-3 seeds was sown without seed
treatment, nor the application of fertilizer or plant protection chemicals. Log wood bunding
techniques involved keeping different sizes of log across the slope at a distance of 3-5 meters
for soil and water conservation and those logs mainly comes from clearing the jungle for jhum
field itself. The plant parameters like, plant height, number of tillers per hill, number of
effective tillers per square meter, panicle length, number of grains per panicle, test weight and
grain yield.
Results
The growth and development parameters of rice viz., plant height, number of leaves per plant,
flag leaf length, and number of tillers per hill under the logwood bunding method showed
significant differences as compared to jhum field without logwood bunding as shown in the
tables. These may be due to the fact that logwood bunding check the erosion of the topsoil and
the decomposing weeds provided rich nutrients to the soil to enhance fertility for better growth
and yield. The beneficial effect of logwood bunding method in enhancing the growth and yield
over the traditional jhum method through increased height, leaves, number of tillers, leaf area
ultimately reflected in higher yield attributing characters viz., number of panicles per hill,
length of panicle, number of panicles, primary and secondary branch per panicles, number of
filled grains per panicle, weight of filled grains per panicle, test weight and ultimately the grain
yield obtained from the plant as represented in the tables.
Parameters of Rice crops variety Saphuapa, Sasu kylyno and Idaw kylyno under Normal
Sl. No.
Parameters of crop
jhum without log-wood bunding
Local rice variety
Saphuapa Sasu kylyno Idaw
kylyno
1. Average plant height (cm) 138.00 158.00 134.00
2. Average number of leaves per plant 5.00 4.00 4.00
3. Average flag Leaf length (cm) 47.00 84.00 62.00
4. Average number of panicles per plant 18.00 12.00 19.00
5. Average number of grains per panicle 186.00 264.00 361.00
6. Average panicle length (cm) 22.25 20.50 21.00
7. Average primary branch per panicle 12.00 16.00 15.00
8. Average secondary branch per panicle 38.00 41.00 45.00
9. Average number of tillers per hill 21.00 27.00 24.00
10. Average effective tiller per square meter 218.00 278.00 257.00
11. Average filled grain per panicle 135.00 169.00 148.00
12. Average grain yield (t/ha) 1.15 1.45 1.20
Resilience through land and water management interventions, water management and governance
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