Effect of Phosphorus and Bio-fertilizers on Productivity of Black gram [Vigna mungo (L.) Hepper]
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Date
2018-06
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Publisher
MPUAT, Udaipur
Abstract
Effect of Phosphorus and Bio-fertilizers on Productivity of Black
gram [Vigna mungo (L.) Hepper] A field experiment entitled “Effect of Phosphorus and Bio-fertilizers on
Productivity of Black gram [Vigna mungo (L.) Hepper]” was conducted on clay
loam soils having medium fertility status (226.7 kg N, 19.4 kg P2O5 and 305.4 kg K2O
ha-1) at Instructional Farm, Department of Agronomy, Rajasthan College of
Agriculture, Udaipur during kharif 2017.
The experiment consisted of 12 treatments combinations consisted of three
phosphorus levels (0, 20 and 40 kg P2O5 ha-1) and four different bio-fertilizers
(control, carrier based PSB, liquid biofertilizer and carrier based PSB + liquid
biofertilizer). These 12 combinations were evaluated under factorial randomized
block design with three replications. Black gram cultivar (PU-1) was taken as test
crop.
The results revealed that application of 40 kg P2O5 ha-1 significantly enhanced
plant height, dry matter accumulation plant-1 20 DAS, 50 DAS and at harvest,
number of nodules at 50 % flowering (45.50), chlorophyll content at 50 %
flowering(2.93 mg g-1) and yield attributes viz. pods plant-1 (37.28), seeds pod-1 (6.14)
and seed yield (1031.46 kg ha-1), haulm yield (1260.22 kg ha-1) and biological yield
(2291.68 kg ha-1) were recorded. The nitrogen and phosphorus uptake in seed (36.64
and 4.36 kg ha-1), haulm (20.02 and 2.92 kg ha-1) and total (56.66 and 7.28 kg ha-1),
status of nitrogen (347.87 kg ha-1) and phosphorus (25.71 kg ha-1) in soil after harvest
of crop recorded highest. The 20 kg P2O5 level was at par with 40 kg P2O5 in LAI at
50 % flowering, test weight, seed yield plant-1 and nutrient content in (nitrogen and
phosphorus) seed and haulm. Harvest index was non significant effect at 40 kg P2O5
ha-1 level. The highest net return (` 36146 ha-1) and B C ratio (1.39) were recorded at
40 kg P2O5 ha-1 level.
* Research scholar, Department of Agronomy, Rajasthan College of Agriculture, Udaipur.
**Professor, Department of Agronomy, Rajasthan College of Agriculture, Udaipur. MPUA&T, Udaipur.
The seed treatment with biofertilizer (liquid biofertilizer + carrier based PSB)
significantly increased the plant height ( 20 DAS and at harvest), number of nodules
at 50 % flowering (45.33), leaf area index (3.19), chlorophyll content (2.94 mg g-1)
and yield attributes viz. pods plant-1 (37.39), seeds pod-1 (6.48) seed yield (1041.83 kg
ha-1), haulm yield (1273.41 kg ha-1) and biological yield (2315.24 kg ha-1) were
recorded. The nutrient content viz. nitrogen in haulm (1.567 %), phosphorus in seed
(0.410 %) and haulm (0.233 %), and also nitrogen and phosphorus uptake in seed,
haulm and total were significantly increased.
The seed treatment with biofertilizer (liquid biofertilizer + carrier based PSB)
was at par with liquid biofertilizer in plant height at 50 DAS (45.70 cm), dry matter
accumulation at 20 DAS (2.35 g plant-1), 50 DAS (12.74 g plant-1) and at harvest
(24.59 g plant-1). The seed yield plant-1 (4.55 g) 1000- seed weight (44.34 g), protein
content in seed (21.03 %), nitrogen content in seed (3.500 %) and phosphorus status
of soil after harvest of crop (23.71 kg hac-1) which were at par with LB. The seed
treatment with biofertilizers did not significant affect the harvest index and nitrogen
status of soil after harvest of crop. The highest net return (` 37616 ha-1) and B C ratio
(1.49) were recorded with carrier based PSB + liquid biofertilizer and followed by
liquid biofertilizer (` 29371 ha-1), (1.17).
Description
Effect of Phosphorus and Bio-fertilizers on Productivity of Black
gram
Keywords
null
Citation
Ola Gograj , and Dashora, L.N