PLANT DENSITY AND NITROGEN EFFECTS ON GROWTH AND YIELD OF BT COTTON ...

104 Pages·2016·0.45 MB·English

PLANT DENSITY AND NITROGEN EFFECTS
ON GROWTH AND YIELD OF BT COTTON
(Gossypium hirsutum L.)
BY
CHANDRASEKHAR REDDY CHUKKA

B.Sc. (Ag.)

THESIS SUBMITTED TO THE
ACHARYA N. G. RANGA AGRICULTURAL UNIVERSITY
IN PARTIAL FULFILMENT OF THE REQUIREMENTS
FOR THE AWARD OF THE DEGREE OF

MASTER OF SCIENCE IN AGRICULTURE
(AGRONOMY)

CHAIR PERSON: Dr. K. CHANDRASEKHAR

DEPARTMENT OF AGRONOMY
AGRICULTURAL COLLEGE, BAPATLA – 522101
ACHARYA N. G. RANGA AGRICULTURAL UNIVERSITY

2012
DECLARATION
I, Mr. CHANDRASEKHAR REDDY CHUKKA, hereby declare that the
thesis entitled “PLANT DENSITY AND NITROGEN EFFECTS ON
GROWTH AND YIELD OF BT COTTON (Gossypium hirsutum L.)” submitted
to the Acharya N.G. Ranga Agricultural University for the degree of Master
of Science in Agriculture is the result of original research work done by me.
I also declare that no material contained in the thesis has been published earlier
in any manner.

Place: (CHANDRASEKHAR REDDY CHUKKA)
Date: I. D. No. BAM-10-001
CERTIFICATE

Mr. CHANDRASEKHAR REDDY CHUKKA has satisfactorily
prosecuted the course of research and the thesis entitled “PLANT DENSITY
AND NITROGEN EFFECTS ON GROWTH AND YIELD OF BT
COTTON (Gossypium hirsutum L)” submitted is the result of original research
work and is of sufficiently high standard to warrant its presentation to the
examination. I also certify that neither the thesis nor its part thereof has been
previously submitted by him for a degree of any University.

Date: (K. CHANDRASEKHAR)
Chairman of the Advisory Committee
Associate Professor and Head
Department of Agronomy
Agricultural College, Aswaraopet- 507301
CERTIFICATE
This is to certify that the thesis entitled “PLANT DENSITY AND
NITROGEN EFFECTS ON GROWTH AND YIELD OF BT COTTON
(Gossypium hirsutum L.)” submitted in partial fulfilment of the requirements
for the degree of ‘MASTER OF SCIENCE IN AGRICULTURE’ in the major
field of AGRONOMY of the Acharya N. G. Ranga Agricultural University,
Hyderabad is a record of the bonafide original research work carried out by Mr.
CHANDRASEKHAR REDDY CHUKKA under our guidance and
supervision.
No part of the thesis has been submitted by the student for any other
degree or diploma. The published part and all assistance received during the
course of investigation have been duly acknowledged by the author of the thesis.

(K. CHANDRASEKHAR)
Chairman of the Advisory Committee
Thesis approved by the Student Advisory Committee
Chair Person : Dr. K. CHANDRASEKHAR
Associate Professor and Head
Department of Agronomy
Agricultural College
Aswaraopet- 507301

Member : Dr. K. SRINIVASULU
Assistant Professor
Department of Agronomy
Agricultural College
Bapatla - 522101

Member : Dr. P. SANDHYA RANI
Senior Scientist (Plant Physiology)
Agricultural Research Station , Dharsi
Prakasam - 523247

Date of final viva – voce:
LIST OF CONTENTS

Chapter No. Title Page No.

I INTRODUCTION
II REVIEW OF LITERATURE
III MATERIAL AND METHODS
IV RESULTS AND DISCUSSION
V SUMMARY AND CONCLUSIONS
LITERATURE CITED
APPENDICES
LIST OF TABLES
Table No. Title Page
No.
3.1 Weekly meteorological data during the crop period (29-07-2012 to
27-01- 2012)
3.2 Physical and physico-chemical properties of the experimental soil
4.1 Plant height (cm) at 30 DAS as influenced by planting density and
nitrogen level
4.2 Plant height (cm) at 60 DAS as influenced by planting density and
nitrogen level
4.3 Plant height (cm) at 90 DAS as influenced by planting density and
nitrogen level
4.4 Plant height (cm) at 120 DAS as influenced by planting density and
nitrogen level
4.5 Plant height (cm) at maturity as influenced by planting density and
nitrogen level
4.6 Drymatter accumulation (kg ha-1) at 30 DAS as influenced by planting
density and nitrogen level
4.7 Drymatter accumulation (kg ha-1) at 60 DAS as influenced by planting
density and nitrogen level
4.8 Drymatter accumulation (kg ha-1) at 90 DAS as influenced by planting
density and nitrogen level
4.9 Drymatter accumulation (kg ha-1) at 120 DAS as influenced by planting
density and nitrogen level
4.10 Dry matter accumulation (kg ha-1) at maturity as influenced by planting
density and nitrogen level
4.11 Number of monopodial plant-1 at harvest as influenced by planting
density and nitrogen level
4.12 Number of sympodial per plant-1 at harvest as influenced by planting
density and nitrogen level
4.13 Days to 50 % flowering as influenced by planting density and nitrogen
level
CGR (g m-2 day-1) at 30-60 DAS as influenced by planting density and
4.14
nitrogen level
4.15 CGR (g m-2 day-1) at 60-90 DAS as influenced by planting density and
nitrogen level
4.16 CGR (g m-2 day-1) at 90-120 DAS as influenced by planting density
and nitrogen level
4.17 RGR (g g-1 day-1) at 30-60 DAS as influenced by planting density and
nitrogen level
4.18 RGR (g g-1 day-1) at 60-90 DAS as influenced by planting density and
nitrogen level
4.19 RGR (g g-1 day-1) at 90-120 DAS as influenced by planting density and
nitrogen level
4.20 Number of bolls per plant as influenced by planting density and
nitrogen level
4.21 Number of picked bolls per plant as influenced by planting density and
nitrogen level
4.22 Boll weight (g) as influenced by planting density and nitrogen level
4.23 Seed cotton yield per plant (g) as influenced by planting density and
nitrogen level
4.24 Seed cotton yield (kg ha-1) as influenced by planting density and
nitrogen level
4.25 Leaf nitrogen content (%) at 90 DAS as influenced by planting density
and nitrogen level
4.26 Nitrogen content (%) at maturity as influenced by planting density and
nitrogen level
4.27 Nitrogen uptake by plant (kg ha-1) at maturity as influenced by
planting density and nitrogen level
4.28 Ginning percentage (%) as influenced by planting density and nitrogen
level
4.29 Fibre length (mm) as influenced by planting density and nitrogen level
4.30 Fibre strength (g tex-1) as influenced by planting density and nitrogen
level
4.31 Elongation percentage (%) as influenced by planting density and
nitrogen level
4.32 Fibre fineness (µg in-1) as influenced by planting density and nitrogen
level
4.33 Economics of Bt cotton as influenced by planting density and nitrogen
level
LIST OF FIGURES
Fig. Title Page
No. No.
3.1 Weekly mean maximum and minimum temperatures during the
crop growth period
3.2 Weekly mean relative humidity and rainfall during the crop
growth period
3.3 Field Layout Plan of the Experiment
4.1 Plant height of Bt cotton as influenced by nitrogen levels
4.2 Drymatter accumulation of Bt cotton at maturity as influenced
by planting density and nitrogen level
4.3 Number of bolls per plant of Bt cotton as influenced by planting
density and nitrogen level
4.4 Boll weight of Bt cotton as influenced by planting density and
nitrogen level
4.5 Seed cotton yield of Bt cotton as influenced by planting density
and nitrogen level
4.6 Leaf nitrogen content at 90 days after sowing of Bt cotton as
influenced by planting density and nitrogen level
4.7 Response of Bt cotton to different levels of nitrogen
LIST OF APPENDICES

Appendix Title Page
No. No.
I Plant population (No. m-2) of Bt cotton as influenced by
planting density and nitrogen level

II Drymatter accumulation per plant (g) at maturity as
influenced by planting density and nitrogen level
III Calendar of operations
IV Harvest index (%) as influenced by planting density and
nitrogen level