The farmers of Bundelkhand region
was generally sown soybean around 1-2nd week of July, 2015. Now the
soybean crop is in flowering stage or will going to inter inR1 (first flower
stage) stage during this week (17-23th August, 2015). Crop establishment was
fair and till now the crop growth is good. Means the crop has undergone very
little environmental stress and successfully entering into reproductive stage.
May be stress will be started from now.
The high air temperature is
around 32-33°C, but leaf/canopy temperature of Soybean may be higher than the
air temperature.
The region received less rainfall
(35 % less from Normal rainfall) from their normal value upto 15th
August, 2015.
If the rest of the August month
received less rainfall than seed number /meter square will be less and seed
size will be also affected by low soil moisture, high evapotranspiration
rate and high air temperature( above
34°C).
There is white fly , green semi
looper, Griddle B attack on soybean
crop. The cultivar JS 335 has been affected by YMV and more or less the
cultivar JS 95-60. If warm temperature prevails further for next one-two weeks,
substantial yield loss may occur, which may range from 20-40 % for rainfed
conditions. The lower CGR rate, lower N fixation rate, and lower seed number
and seed size may play the critical role.
Could foliar liquid nitrogen
spray and weekly irrigation may help? Suggestions invited from agricultural
scientists.