Subscribe Now Subscribe Today
Science Alert
 
Blue
   
Curve Top
Pakistan Journal of Biological Sciences
  Year: 2000 | Volume: 3 | Issue: 10 | Page No.: 1580-1582
DOI: 10.3923/pjbs.2000.1580.1582
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Patterns in Gypsum Requirement Before and After Gypsum Application

Aman Ullah Bhatti, Ahmad Bakhsh and Akbar Hussain Gurmani

Abstract:
Spatial patterns in gypsum requirement of a salt affected field at Shandau village in Dera Ismail Khan district ware determined before and after treatment with gypsum. Surface soil samples (0-25 cm) were collected from six parallel transacts at 15 m intervals. Gypsum requirement was determined for all these samples. Each transect was divided into two strips. One strip received a single uniform rate of gypsum while the adjacent strip was treated with variable rates of gypsum to match gypsum requirement of different locations. Wheat crop was planted in the whole field after gypsum application. At harvest, wheat yields were measured at 15 m intervals from an area of 1 m2 in both the strips from all the six transacts. Surface soil samples (0-25 cm) were also collected from both the strips from all the six transacts. GR was determined for all these samples. The data on GR and wheat yields were subjected to classical statistical analysis and geostatistical technique of semivariogram analysis. Results showed that there was a considerable variation (CV = 63%) in GR before and after gypsum application (Cv = 75 and 106%). GR was significantly reduced with gypsum application. There were strong spatial patterns in GR before and after treatment in variable-rate strips. Similarly there was a considerable variation in grain yields (CV = 50 and 47%) with strong spatial patterns.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

Aman Ullah Bhatti, Ahmad Bakhsh and Akbar Hussain Gurmani, 2000. Patterns in Gypsum Requirement Before and After Gypsum Application. Pakistan Journal of Biological Sciences, 3: 1580-1582.

DOI: 10.3923/pjbs.2000.1580.1582

URL: https://scialert.net/abstract/?doi=pjbs.2000.1580.1582

COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 

Curve Bottom