Record Details

Balance sheet of soil nitrogen and phosphorus vis-a-vis soybean productivity under different levels and sources of phosphorus and plant growth regulators in sub-humid Rajasthan

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Balance sheet of soil nitrogen and phosphorus vis-a-vis soybean productivity under different levels and sources of phosphorus and plant growth regulators in sub-humid Rajasthan
Not Available
 
Creator SHANKER LAL KHASWA,
R. K. DUBEY
SHAILENDRA SINGH
R. C. TIWARI
INDU SINGH
 
Subject : Levels of phosphorus, nitrogen balance sheet, phosphorus balance sheet, plant growth regulators, source of phosphorus
 
Description Not Available
An experiment was conducted at Udaipur during kharif seasons of 2009 and
2010 on soybean crop involving 27 treatments i. e. three levels (20, 30 and 40 kg P2O5/
ha) and three sources (single super phosphate or SSP, phosphorus rich organic manure
or PROM and di-ammonium phosphate or DAP) of phosphorus in main plots and three
plant growth regulators or PGRs (water spray, benzyl adenine 50 ppm and NAA 100 ppm)
in sub-plots of a split plot design having three replications. Results revealed that 40 kg
P2O5/ha, SSP and NAA recorded a pooled grain and stover yields of 25.95 and 37.37,
25.12 and 36.23, and 24.23 and 35.73 q/ha, respectively, which were not only maximum
but also significantly superior to their respective counter treatments. Higher soybean
productivity recorded in 40 kg P2O5/ha, SSP and NAA treatments linked with considerably
higher mean uptake of nitrogen and P2O5 which were 243.96 and 24.79; 228.10 and 24.52
and 229.90 and 23.44 kg/ha, respectively. Data on actual soil nitrogen status after crop
harvest or E values (kg/ha) showed that among different levels of phosphorus, mean N
ranged from 269.52 at 20 kg P2O5 to 298.24 at 40 kg P2O5/ha, while mean P2O5 varied
between 23.41 at 20 kg P2O5 and 25.99 at 40 kg P2O5/ha. Among different phosphorus
sources, the order of mean E values (kg/ha) for N were PROM (294.93)>DAP (281.69)>SSP
(275.98) but order for mean E P2O5 values was SSP (26.09)>PROM (24.33)>DAP (24.31).
Among PGRs, the order for mean E values of N and P2O5 (kg/ha) was NAA (286.47 and
25.00)>benzyl adenine (284.64 and 24.79)>water spray (281.48 and 24.39). Data on actual
mean gain or loss (G=E–initial soil nutrient status) of N showed that different levels
and sources of phosphorus as well as PGRs recorded a negative balance ranging from
-2.94 kg/ha at 40 kg P2O5/ha to -31.67 kg/ha at 20 kg P2O5/ha. Contrary to N, different
levels and sources of phosphorus as well as PGRs recorded a positive balance in mean
G values (kg/ha) that for various P2O5 levels ranged from 0.25 at 20 kg P2O5/ha to 2.83 at
40 kg P2O5/ha; for different phosphorus sources between 0.99 in DAP to 2.56 in SSP and
between 1.63 in benzyl adenine to 1.84 in NAA among PGRs evaluated in this study.
Not Available
 
Date 2020-03-07T07:13:57Z
2020-03-07T07:13:57Z
2014-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/33685
 
Language English
 
Relation Not Available;
 
Publisher Not Available