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Sustainable fertilizer practices for upland rice from permanent manorial trials under sub-humid alfisols.

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Title Sustainable fertilizer practices for upland rice from permanent manorial trials under sub-humid alfisols.
Sustainable fertilizer practices for upland rice from permanent manorial trials under sub-humid alfisols.
 
Creator ICAR_CRIDA
 
Subject Crop seasonal rainfall, crop yield sustainability, regression analysis, semiarid Alfisols, soil fertility, sustainability yield index.
 
Description Not Available
Productivity of rainfed finger millet in semiarid tropical Alfisols is predominantly constrained by erratic rainfall, limited soil moisture, low soil fertility, and less fertilizer
use by the poor farmers. In order to identify the efficient nutrient use treatment for
ensuring higher yield, higher sustainability, and improved soil fertility, long term field
experiments were conducted during 1984 to 2008 in a permanent site under rainfed
semi-arid tropical Alfisol at Bangalore in Southern India. The experiment had two
blocks—Farm Yard Manure (FYM) and Maize Residue (MR) with 5 fertilizer treatments, namely: control, FYM at 10 t ha−1, FYM at 10 t ha−1 + 50% NPK [nitrogen
(N), phosphorus (P), potassium (K)], FYM at 10 t ha−1 + 100% NPK (50 kg N + 50
kg P + 25 kg K ha−1) and 100% NPK in FYM block; and control, MR at 5 t ha−1, MR
at 5 t ha−1 + 50% NPK, MR at 5 t ha−1 + 100% NPK and 100% NPK in MR block.
The treatments differed significantly from each other at p < 0.01 level of probability in
influencing finger millet grain yield, soil N, P, and K in different years. Application of
FYM at 10 t ha−1 + 100% NPK gave a significantly higher yield ranging from 1821
to 4552 kg ha−1 with a mean of 3167 kg ha−1 and variation of 22.7%, while application of maize residue at 5 t ha−1 + 100% NPK gave a yield of 593 to 4591 kg ha−1
with a mean of 2518 kg ha−1 and variation of 39.3% over years. In FYM block, FYM
at 10 t ha−1 + 100% NPK gave a significantly higher organic carbon (0.45%), available N (204 kg ha−1), available P (68.6 kg ha−1), and available K (107 kg ha−1) over
years. In maize residue block, application of MR at 5 t ha−1 + 100% NPK gave a
significantly higher organic carbon (0.39%), available soil N (190 kg ha−1), available
soil P (47.5 kg ha−1), and available soil K (86 kg ha−1). The regression model (1) of
yield as a function of seasonal rainfall, organic carbon, and soil P and K nutrients
gave a predictability in the range of 0.19 under FYM at 10 t ha−1 to 0.51 under 100%
NPK in FYM block compared to 0.30 under 100% NPK to 0.67 under MR at 5 t ha−1
application in MR block. The regression model (2) of yield as a function of seasonal
rainfall, soil N, P, and K nutrients gave a predictability in the range of 0.11 under
FYM at 10 t ha−1 to 0.52 under 100% NPK in FYM block compared to 0.18 under MR
at 5 t ha−1 + 50% NPK to 0.60 under MR at 5 t ha−1 application in MR block. An
assessment of yield sustainability under different crop seasonal rainfall situations indicated that FYM at 10 t ha−1 + 100% NPK was efficient in FYM block with a maximum
Sustainability Yield Index (SYI) of 41.4% in
Not Available
 
Date 2020-02-25T05:59:46Z
2020-02-25T05:59:46Z
2007
 
Type Technical Report
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/32530
 
Language English
 
Relation Not Available;
 
Publisher Maruthi Sankar, G.R