Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
Results
The dates of sowing showed significant effect on growth and yield of the cowpea varieties
tested. There was gradual decrease in the plant height with the progress of sowing dates tested.
Maximum plant height of 94.45 cm was recorded in crop sown during 2 nd fortnight of
September followed by 1 st fortnight of October (64.70 cm). Lowest plant height of 39.25 cm
was recorded in the November 1 st fortnight sown crop. In present investigation September
second fortnight sown crop produced significantly maximum seed yield (1367 kg ha -1 ) and was
on par with sowing of October first fortnight (1285 kg/ha) and was significantly superior to the
other two dates of sowing tested. The three varieties tested recorded similar plant height and
number of branches per plant. Tirupati-1 recorded highest seed yield of 1323 kg/ha and was
significantly superior over Local brown (1159 kg/ha) and Local bold white (Meghana) 906
kg/ha. The higher seed yield obtained in early sown crop might be due to higher available soil
moisture during cropping period as a result of receipt of well distributed rainfall (Rima
Taipodia and Nabam, 2013). Similarly, Prabhamani and Potdar (2018) also recorded higher
seed yield, haulm yield and B:C ratio in cowpea sown at early dates during Rabi. Interactions
were non-significant.
Yield attributes and seed yield of cowpea as influenced by different dates of sowing and varieties
Dates of sowing
2 nd fortnight of
September
1 st fortnight of
October
2 nd fortnight of
October
1 st fortnight of
November
Plant height
(cm)
No of
branches/plant
No. of
pods/plant
Seed yield
(kg/ha)
94.45 9.10 15.85 1367
64.70 7.55 15.05 1285
48.30 6.35 13.40 1069
39.25 5.55 10.55 817.5
S.Em ± 2.20 0.40 0.75 56
CD (0.05) 7.55 1.40 2.65 194
Varieties
CV (%) 9.05 11.91 11.65 10.97
Tirupati-1 63.55 7.44 14.85 1323
Local brown 61.70 7.25 14.10 1159
Local bold
white
(Meghana)
59.72 6.81 12.20 906
S.Em ± 2.25 0.44 0.365 59.8
CD (0.05) NS NS 1.09 179.05
CV (%) 8.6 15 6.6 13.2
Interaction NS NS NS NS
Institutional and policy innovations for accelerated and enhanced impacts
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