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Modeling of interactive effects of rainfall, evaporation, soil

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Title Modeling of interactive effects of rainfall, evaporation, soil
Modeling of interactive effects of rainfall, evaporation, soil
 
Creator ICAR_CRIDA
 
Subject Climatic parameters, crop yields, prediction models, productivity, soil fertility, regressions
 
Description Not Available
Long-term effects of the different combinations of nutrient-management treatments were
studied on crop yields of sorghum + cowpea in rotation with cotton + black gram.
The effects of rainfall, soil temperature, and evaporation on the status of soil fertility
and productivity of crops were also modeled and evaluated using a multivariate
regression technique. The study was conducted on a permanent experimental site of
rain-fed semi-arid Vertisol at the All-India Coordinated Research Project on Dryland
Agriculture, Kovilpatti Centre, India, during 1995 to 2007 using 13 combinations of
nutrient-management treatments. Application of 20 kg nitrogen (N) (urea) + 20 kg N
[farmyard manure (FYM)] + 20 kg phosphorus (P) ha−1 gave the greatest mean grain
yield (2146 kg ha−1) of sorghum and the fourth greatest mean yield (76 kg ha−1) of
cowpea under sorghum + cowpea system. The same treatment maintained the greatest
mean yield of cotton (546 kg ha−1) and black gram (236 kg ha−1) under a cotton +
cowpea system. When soil fertility was monitored, this treatment maintained the greatest
mean soil organic carbon (4.4 g kg−1), available soil P (10.9 kg ha−1), and available
soil potassium (K) (411 kg ha−1), and the second greatest level of mean available soil
N (135 kg ha−1) after the 13-year study. The treatments differed significantly from each
other in influencing soil organic carbon (C); available soil N, P, and K; and yield of
crops attained under sorghum + cowpea and cotton + black gram rotations. Soil temperature
at different soil depths at 07:20 h and rainfall had a significant influence on the
status of soil organic C. Based on the prediction models developed between long-term
Not Available
 
Date 2020-02-25T08:20:00Z
2020-02-25T08:20:00Z
2012
 
Type Technical Report
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/32747
 
Language English
 
Relation Not Available;
 
Publisher Sharma KL, Mishra PK,Ravindra Chary G, Gopinath KA, Venkateswarlu B