Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
(25:50 kg/ha N:P2O5 + 5t/ha FYM) along with 2% diammonium phosphatefoliar spray at 50 per
cent pod setting stage(60 to 65 DAS) registered significantly highest grain and stover yield
(15.51 and 18.92 q/ha), moisture use efficiency (6.66 kg/ha/mm), protein yield (291.62 q/ha),
total nitrogen, phosphorus and potassium uptake (64.75, 10.27 and 66.58 kg/ha, respectively) by
chickpea at harvest, as well as highest net returns ( Rs. 56920/-) and B:C ratio (2.80) over rest of
the treatments.
Chickpea (Cicerarientinum L.) is an important pulse crop of the semiarid tropicsparticularly in
rainfed ecology of Indian subcontinent. It is the main source of dietary protein formajority of
Indian population. The average productivity of chickpea is about 823 kg/ha in India and that
ofMaharashtra is 614 kg/ha. The causes for low yield of chickpea are physiological factors such
as insufficientpartitioning of assimilates, poor pod setting, excessive flower abscission and lack
of nutrientsduring the critical growthstages of crop. The nutrients applied through soil
application are not available to plants due to losses by leaching, denitrification or volatilization.
The losses in nutrients can be reduced by foliar application or foliar nutritionto plants by
applying liquid fertilizer directly to their leaves. The diammonium phosphate (DAP) is the
world's most widely used phosphatic fertilizer as a excellent source ofphosphorus and nitrogen
for plant nutrition.The experiment was conducted at ZARS, Solapur to study effect of
foliarapplication of DAP at different growth stages on yield, quality and nutrient uptakeof
Chickpea under dryland conditions.
Methodology
Theexperiment was laid out in a randomized block design (RBD), with six treatments and four
replications. The treatments are T1: Absolute control, T2: GRDF (25:50 N:P2O5 kg/ha+5
t/haFYM), T3: GRDF + 2% DAP foliar spray at first flower, T4: GRDF + 2% DAP foliarspray at
50% flowering, T5: GRDF + 2% DAP foliar-spray at 50% pod set, T6:GRDF+2% DAPfoliar
spray at the end of podding. The FYM was incorporated in the soil and theN and P was
uniformly applied to each plot as a basal dose during all the years of theexperiment. The seed of
chickpea variety Vijay was sown in line with 30 x 10 cm spacing. The initial soil properties of
the experimentalplot were pH (1:2.5)7.5, electrical conductivity0.30 dS/m, organiccarbon 0.50%,
Available nitrogen, phosphorus and potassium (155,12.70 and 550 kg/ha), field capacity 212
mm, permanent wilting point 80 mm. The standard analytical methods were used for analysis of
soil and plant samples. The data obtained in respect of the observations wasstatistically analysed
by using the procedures given by Panse and Sukhatme (1985).
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