Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
Results show that yield attributes and yield viz., effective tiller/m 2 (89.3), finger length
(6.38cm), ear weight (6.38g), no of grains/ear (938) and grain weight/ear/gram (3.32g) and
1000 grain weight (3.28) were highest in technology option IV i.e. improved varieties (GPU-
282) with (N40P30K20) and transplanting 20 days sold seedling in line sowing (PP10 cm & RR
30cm). The maximum grain yield (23.46 q/ha) and straw yield (59.64 q/ha) were recorded in
technology option IV followed by technology option III, TO-II & I. respectively. High yielding
varieties with line sowing and recommended nutrient management increased the grain yield
with increased nutrient supply on yield attributing the characters like effective tillers/m 2 , finger
length, ear weight, number of grain/ear and grain weight/ear. Application of recommended
dose of nutrients and line sowing facilitate weeding to operate three-time dry land weeder
which lead to increase availability of nutrients and improve the soil properties, absorption and
translocation of nutrient by crop resulting in increased yield. These results are in line with the
finding of AK. Roy et al (2018).
Data indicated that, with application of straw mulch, 29.53 per cent mean soil moisture was
recorded during crop growth period as against the soil moisture of 24.22 per cent in the
treatment of without mulching. Due to application of straw mulch, additional moisture of 21.92
per cent was conserved. Aulakh and Sur (1999) conducted study on effect of mulching on soil
moisture and found that due to mulching, additional soil moisture was conserved.
Intervention
Mean soil moisture during crop growth period
Mean soil moisture (%)
2016-17 2017-18 2018-19 2019-20 2020-21 Mean
With mulching 28.64 29.55 29.12 30.36 29.98 29.53
Without mulching 23.54 24.28 24.18 24.95 24.17 24.22
Conclusion
Soybean grain yield was found significantly increase by 16.40 per cent due to application of
straw mulch. The gross and net monetary returns were found significantly increase by 17.17
and 22.61 per cent respectively, due to application of straw mulch. The BC ratio of 1.98 was
observed due to application of straw mulch as against the BC ratio of 1.89 without application
of straw mulch. Due to application of straw mulch, additional moisture of 21.92 per cent was
conserved.
References
Aulakh PS and Sur HS. 1999. Effect of mulching on soil temperature, soil moisture, weed
populationgrowth and yield in pomograinate. Prog. Hort. 31: 131-133
Bu LD, Liu JL, Zhu L, Li SQ, Hill RL, Zhao Y. 2013: The effects of mulching on maize growth,
yield and water use in a semi-arid region. Agric. Water Manag., 123: 71–78.
Resilience through land and water management interventions, water management and governance
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