Different Cropping System’s Effect on Available NPK Post-harvest and their Uptake on Sandy Loam Soil of Southern Telangana Zone, India
Ch. Pragathi Kumari *
AICRP on Integrated Farming Systems, PJTSAU, Rajendranagar, Hyderabad-30, Telangana, India.
M. Goverdhan
AICRP on Integrated Farming Systems, PJTSAU, Rajendranagar, Hyderabad-30, Telangana, India.
G. Kiran Reddy
AICRP on Integrated Farming Systems, PJTSAU, Rajendranagar, Hyderabad-30, Telangana, India.
Knight Nthebere
College of Agriculture, PJTSAU, Rajendranagar, Hyderabad-30, Telangana, India.
S. H. K. Sharma
Department of Soil Science and Agricultural Chemistry, College of Agriculture, PJTSAU, Rajendranagar, Hyderabad-30, Telangana, India.
A. Aziz Qureshi
Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad, Telangana, India.
Md. Alibaba
AICRP on Integrated Farming Systems, PJTSAU, Rajendranagar, Hyderabad-30, Telangana, India.
K. Chiranjeevi
AICRP on Integrated Farming Systems, PJTSAU, Rajendranagar, Hyderabad-30, Telangana, India.
*Author to whom correspondence should be addressed.
Abstract
The present study was undertaken in the ongoing long-term experiment initiated during 2017 at experimental farm, College of Agriculture, Rajendranagar, Hyderabad. Soil samples collected from a depth of 0–15 cm was analysed for soil fertility parameters namely: available N, P and K. The results indicated that the different cropping systems had positive influence on improving the nutrient status (i.e., available N, P and K) significantly over the initial soil values (N: 112.20, P: 23.40 and K: 170.30 kg ha-1, respectively). These ten cropping systems were grouped in to five categories viz., pre-dominant cropping systems of the zone, ecological cropping systems, household nutritional security giving cropping systems, fodder security giving cropping systems and cropping systems involving high value crops. So that from each category, best cropping system can be identified and can be suggested to different integrated farming systems models. The maximum (221.60 and 221.57 kg ha-1) soil available nitrogen was obtained in Pigeon pea + Greengram (1:3) – Sesame after harvest of kharif and rabi, available phosphorus builds up was profound in Fodder maize – Lucerne (48.27 kg ha-1) and available K (207.63 kg ha-1) was higher in Rice –Maize cropping system after harvest. Fodder crops recorded significantly higher NPK uptake over other cropping systems.
Keywords: Available NPK, NPK uptake and cropping system, soil fertility